Dental Pathology Cysts Quiz
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Questions and Answers

What results from the degeneration of central cells in an epithelial mass?

  • Formation of new capillaries
  • Development of necrosis and liquefaction (correct)
  • Enhancement of nutritional supply
  • Increase in stable epithelial tissue

    • Which of the following describes the typical age range for the occurrence of apical periodontal cysts?

  • Children under 12
  • Adults (third to sixth decades) (correct)
  • Elderly (over 70 years)
  • Young adults (18-25 years)

    • Which feature is NOT typically associated with radicular cysts?

  • Presence of vital tooth (correct)
  • Asymptomatic detections during x-rays
  • Rounded, hard swelling at first
  • Painless swellings

    • What causes the formation of a mucous extravasation cyst?

    <p>Mechanical trauma to minor salivary gland excretory duct</p> Signup and view all the answers

    What is responsible for the increase in osmotic pressure within a cyst lumen?

    <p>Cellular debris breakdown into more simple proteins</p> Signup and view all the answers

    Which histopathologic feature is associated with a mucous extravasation cyst?

    <p>Surrounding granulation tissue infiltrated by various immune cells</p> Signup and view all the answers

    What radiographic feature may indicate an infection in a radicular cyst?

    <p>Hazy outline of the cyst</p> Signup and view all the answers

    In apical periodontal cysts, which type of epithelium is commonly found in the lining?

    <p>Stratified squamous epithelium</p> Signup and view all the answers

    Where is a mucocele most commonly located?

    <p>On the lower lip</p> Signup and view all the answers

    What physical change occurs to the swelling as the overlying bone is resorbed?

    <p>Turns into a soft, bluish fluctuating swelling</p> Signup and view all the answers

    What is the typical appearance of a mucocele?

    <p>Soft and painless swelling with smooth, translucent surface</p> Signup and view all the answers

    Which statement describes the size of radicular cysts?

    <p>Ranges from 5 mm to several centimeters</p> Signup and view all the answers

    What is the recommended treatment for a mucous extravasation cyst?

    <p>Surgical excision</p> Signup and view all the answers

    What characterizes the connective tissue lining of apical periodontal cysts?

    <p>Contains collagen fibers, fibroblasts, and capillaries</p> Signup and view all the answers

    What type of bodies are formed from red blood cells in small capillaries found within the epithelial lining?

    <p>Eosinophilic Hyaline bodies</p> Signup and view all the answers

    How is the treatment approach determined for larger cysts?

    <p>Enucleation and repair with bone chips</p> Signup and view all the answers

    What is a potential complication of residual cysts?

    <p>Risk of jaw fracture due to weakening of bone</p> Signup and view all the answers

    What fluid components are typically found in the cystic fluid of a cyst?

    <p>Serum albumin, globulin, cholesterol, and nucleoproteins</p> Signup and view all the answers

    Inflammatory lateral periodontal cysts typically form at the side of which type of tooth?

    <p>Pulpless tooth</p> Signup and view all the answers

    What is a primary characteristic of fully formed cysts regarding their epithelial lining?

    <p>Epithelial lining exhibits regularity and flattening</p> Signup and view all the answers

    What can happen if periapical granulomas are misdiagnosed?

    <p>They might be treated as cysts without proper evaluation</p> Signup and view all the answers

    What is the primary characteristic of a static bone cyst?

    <p>It appears as a radiolucent area without epithelial lining.</p> Signup and view all the answers

    Which feature is commonly associated with multilocular radiolucency in certain jaw lesions?

    <p>Honeycomb or soap-bubble appearance.</p> Signup and view all the answers

    What type of tissue is typically found in the histopathological examination of dermoid cysts?

    <p>Keratinized stratified squamous epithelium.</p> Signup and view all the answers

    How is the diagnosis of a static bone cyst confirmed?

    <p>With a sialogram injecting radiopaque material.</p> Signup and view all the answers

    What is a common clinical feature of epidermoid cysts?

    <p>They cause bulging in the submental area when deeper.</p> Signup and view all the answers

    What treatment is generally indicated for soft tissue cysts of the jaws?

    <p>Surgical removal.</p> Signup and view all the answers

    What imaging feature helps distinguish a static bone cyst?

    <p>Sharp circumscribed radiolucency under the dental canal.</p> Signup and view all the answers

    What is NOT a characteristic of the lesion described as having multilocular radiolucency?

    <p>Asymptomatic nature.</p> Signup and view all the answers

    What is the typical appearance of a cyst that contains blood in the cystic space?

    <p>Soft rounded swelling that appears deep blue</p> Signup and view all the answers

    Which of the following treatments may be necessary for very large cysts of the mandible?

    <p>Marsupialization to allow for shrinkage of the bony defect</p> Signup and view all the answers

    What is a possible complication of an odontogenic keratocyst?

    <p>Transformation into an ameloblastoma</p> Signup and view all the answers

    What type of epithelium is typically found in the lining of an odontogenic keratocyst?

    <p>Stratified squamous epithelium</p> Signup and view all the answers

    What is the most common site for odontogenic keratocysts?

    <p>Mandibular third molar area</p> Signup and view all the answers

    What content is typically found in an infected cyst?

    <p>Yellowish fluid with cholesterol crystals</p> Signup and view all the answers

    What is the demographic trend related to the occurrence of odontogenic keratocysts?

    <p>Typically found in the second and third decades of life</p> Signup and view all the answers

    Which of these cysts is NOT listed as a differential diagnosis for odontogenic keratocysts?

    <p>Dentigerous cyst</p> Signup and view all the answers

    What is the most common developmental cyst of the neck?

    <p>Thyroglossal tract cyst</p> Signup and view all the answers

    At what stage of development does the thyroid begin to form in the neck?

    <p>Fourth week of intrauterine life</p> Signup and view all the answers

    Which clinical feature is associated with a large thyroglossal tract cyst?

    <p>Dysphasia and difficulty with eating</p> Signup and view all the answers

    What type of epithelium is typically found lining a thyroglossal tract cyst above the level of the hyoid bone?

    <p>Stratified squamous epithelium</p> Signup and view all the answers

    What is the primary treatment recommended for a thyroglossal tract cyst?

    <p>Complete surgical excision</p> Signup and view all the answers

    Where is a benign cervical lymphoepithelial cyst typically located?

    <p>Lateral aspect of the neck</p> Signup and view all the answers

    During what age range are benign cervical lymphoepithelial cysts most commonly seen?

    <p>Childhood and young adults</p> Signup and view all the answers

    What type of tissues may be found in the wall of a thyroglossal tract cyst?

    <p>Thyroid tissue and lymphoid tissue</p> Signup and view all the answers

    The central cells of the epithelial mass often receive adequate nutrition from surrounding capillaries.

    <p>False</p> Signup and view all the answers

    Apical periodontal cysts are primarily asymptomatic and often discovered incidentally on x-rays.

    <p>True</p> Signup and view all the answers

    A radicular cyst can cause painful swellings when infected.

    <p>True</p> Signup and view all the answers

    Radicular cysts can be identified radiographically as irregular, poorly defined radiolucencies.

    <p>False</p> Signup and view all the answers

    The epithelial lining of apical periodontal cysts consists of respiratory epithelium in all cases.

    <p>False</p> Signup and view all the answers

    The enlargement of cysts is caused by a decrease in osmotic pressure of the cystic fluid.

    <p>False</p> Signup and view all the answers

    The typical age range for adults affected by apical periodontal cysts is from their late teens to early twenties.

    <p>False</p> Signup and view all the answers

    Radicular cysts may present with root resorption of the offending tooth.

    <p>True</p> Signup and view all the answers

    In fully formed cysts, the epithelial lining becomes regular and flattened.

    <p>True</p> Signup and view all the answers

    Hypo-plastic epithelium is commonly seen in newly formed cysts.

    <p>False</p> Signup and view all the answers

    Residual cysts can cause problems with dentures and may lead to jaw fractures.

    <p>True</p> Signup and view all the answers

    The connective tissue lining of periapical cysts predominantly contains macrophages only.

    <p>False</p> Signup and view all the answers

    Marsupialization is a treatment option used for large cysts to avoid critical structures like the inferior dental nerve.

    <p>True</p> Signup and view all the answers

    Inflammatory lateral periodontal cysts are more common than periapical cysts.

    <p>False</p> Signup and view all the answers

    Cystic fluid typically contains serum albumin, globulin, and cholesterol.

    <p>True</p> Signup and view all the answers

    Degenerated plasma cells in cysts are identified as Russell bodies.

    <p>True</p> Signup and view all the answers

    The primary treatment for a mucous extravasation cyst is surgical excision.

    <p>True</p> Signup and view all the answers

    Mucous extravasation cysts are typically painful swellings located on the upper lip.

    <p>False</p> Signup and view all the answers

    Mucocele can result from mechanical trauma to major salivary gland ducts.

    <p>False</p> Signup and view all the answers

    A ranula is specifically located on the ventral surface of the tongue and the floor of the mouth.

    <p>True</p> Signup and view all the answers

    Histopathologically, an extravasated mucous pool is usually surrounded by dense bone tissue.

    <p>False</p> Signup and view all the answers

    The Developmental Lateral Periodontal Cyst is a non-inflammatory cyst occurring adjacent to the root of a non-vital tooth.

    <p>False</p> Signup and view all the answers

    The common age range for individuals affected by the Developmental Gingival Cyst of Adulthood is from 20 to 30 years.

    <p>False</p> Signup and view all the answers

    Gingival Cysts appear as small, well-circumscribed swellings and can be more than 1cm in diameter.

    <p>False</p> Signup and view all the answers

    Dentigerous cysts are commonly found associated with erupted teeth.

    <p>False</p> Signup and view all the answers

    The primary origin of the Gingival Cyst of the New Born is the remnants of the dental lamina.

    <p>True</p> Signup and view all the answers

    The male to female ratio for the Developmental Lateral Periodontal Cyst is 1:2.

    <p>False</p> Signup and view all the answers

    Most dentigerous cysts are symptomatic and lead to noticeable clinical features.

    <p>False</p> Signup and view all the answers

    The age range most affected by dentigerous cysts is typically in the second and third decades of life.

    <p>True</p> Signup and view all the answers

    Inflammatory cells are typically observed in the connective tissue wall of the Developmental Lateral Periodontal Cyst.

    <p>False</p> Signup and view all the answers

    The histopathologic features of a Developmental Gingival Cyst of Adulthood include thick stratified squamous epithelium.

    <p>False</p> Signup and view all the answers

    Expansion of the dentigerous cyst is linked to a decrease in cystic fluid osmolarity.

    <p>False</p> Signup and view all the answers

    The typical radiographic feature of Developmental Lateral Periodontal Cyst is a small radiolucent area, usually over 1cm in diameter.

    <p>False</p> Signup and view all the answers

    A dentigerous cyst can lead to root resorption of adjacent teeth.

    <p>True</p> Signup and view all the answers

    The lining of a dentigerous cyst typically consists of non-keratinized stratified squamous epithelium.

    <p>True</p> Signup and view all the answers

    Ciliated epithelium is commonly observed in dentigerous cysts originating from maxillary locations.

    <p>True</p> Signup and view all the answers

    Pain and swelling are uncommon unless a dentigerous cyst becomes infected.

    <p>True</p> Signup and view all the answers

    The eruption cyst is commonly found in the soft tissue of the gum overlying a tooth about to erupt.

    <p>True</p> Signup and view all the answers

    Keratocysts contain pus, which has an offensive smell when examined during operation.

    <p>False</p> Signup and view all the answers

    Ameloblastomas are a potential complication of cysts.

    <p>True</p> Signup and view all the answers

    Odontogenic keratocysts are the most common type of odontogenic cyst.

    <p>False</p> Signup and view all the answers

    The treatment for an eruption cyst is typically surgical removal.

    <p>False</p> Signup and view all the answers

    Inflammation associated with cysts can lead to epithelial hyperplasia and the presence of inflammatory cells.

    <p>True</p> Signup and view all the answers

    The treatment for very large cysts of the mandible may include marsupialization to facilitate shrinkage.

    <p>True</p> Signup and view all the answers

    Keratocysts typically present with peripheral radiopaque borders in radiographic features.

    <p>False</p> Signup and view all the answers

    What happens to the central cells of an epithelial mass when they become separated from their nutrient source?

    <p>They degenerate, become necrotic, and eventually liquefy.</p> Signup and view all the answers

    Describe the typical characteristics of a radicular cyst upon clinical examination.

    <p>Radicular cysts are usually asymptomatic, presenting as slowly progressive painless swellings that can cause bone resorption and fluctuation.</p> Signup and view all the answers

    How does the osmotic pressure within a cyst lumen increase?

    <p>It increases due to the breakdown of complex tissue proteins into simpler proteins, leading to fluid transport across the epithelial lining.</p> Signup and view all the answers

    What is the typical radiographic appearance of an apical periodontal cyst?

    <p>It appears as a round or ovoid well-defined radiolucency with a thin opaque margin.</p> Signup and view all the answers

    What occurs to the overlying bone as a radicular cyst progresses?

    <p>The overlying bone is resorbed, leading to a soft, fluctuant swelling that may appear bluish in color.</p> Signup and view all the answers

    In which age group is the prevalence of apical periodontal cysts typically highest?

    <p>They are most commonly found in adults, particularly in the third to sixth decades of life.</p> Signup and view all the answers

    What type of epithelium can be found in the lining of an apical periodontal cyst?

    <p>The lining may consist of stratified squamous epithelium or respiratory pseudostratified ciliated columnar epithelium.</p> Signup and view all the answers

    What factors may lead to a cyst enlarging over time?

    <p>Cyst enlargement results from fluid ingress into the lumen and an increase in osmotic pressure due to cellular debris breakdown.</p> Signup and view all the answers

    What is the origin of a dentigerous cyst and how does it affect tooth eruption?

    <p>A dentigerous cyst originates from cystic change of the reduced enamel epithelium and can prevent a tooth from erupting.</p> Signup and view all the answers

    What are common clinical features of a dentigerous cyst?

    <p>Common clinical features include facial asymmetry, displacement of teeth, and potential for pain if infected.</p> Signup and view all the answers

    Describe the histopathological features of a dentigerous cyst.

    <p>The cyst is lined by a thin non-keratinized stratified squamous epithelium and has a connective tissue wall devoid of inflammatory cells.</p> Signup and view all the answers

    What radiographic characteristics typically indicate the presence of a dentigerous cyst?

    <p>Radiographically, a dentigerous cyst appears as a well-defined, unilocular radiolucency associated with the crown of an unerupted tooth.</p> Signup and view all the answers

    What age group is most commonly affected by dentigerous cysts?

    <p>Dentigerous cysts are most commonly observed in individuals during their second and third decades of life.</p> Signup and view all the answers

    What role do cholesterol clefts and giant cells play in the connective tissue wall of a dentigerous cyst?

    <p>Cholesterol clefts and foreign body giant cells may be found in the connective tissue wall, indicating cellular response to degeneration.</p> Signup and view all the answers

    How does the expansion of a dentigerous cyst occur?

    <p>Expansion occurs due to increased cystic fluid osmolarity resulting from the degeneration of epithelial cells within the cyst lumen.</p> Signup and view all the answers

    What potential complications may arise from an infected dentigerous cyst?

    <p>Infection of a dentigerous cyst can lead to significant pain, swelling, and further displacement or damage to adjacent teeth.</p> Signup and view all the answers

    What are cholesterol clefts and in which context are they typically not observed?

    <p>Cholesterol clefts are uncommonly seen in cysts that contain inflammatory cell infiltration.</p> Signup and view all the answers

    Why is the x-ray negative for the cyst of the palatine papilla?

    <p>The cyst of the palatine papilla shows no radiographic changes; it primarily presents as a superficial fluctuant bluish swelling.</p> Signup and view all the answers

    What is the primary cause of the globulomaxillary cyst's formation?

    <p>The globulomaxillary cyst arises due to non-odontogenic epithelium entrapped at the fusion site of the globular and maxillary processes.</p> Signup and view all the answers

    What distinguishes the nasolabial cyst from other cysts in terms of location?

    <p>The nasolabial cyst is a soft tissue cyst that does not involve the alveolus and is located in the upper lip region.</p> Signup and view all the answers

    Describe the age and gender demographic typically associated with nasolabial cysts.

    <p>Nasolabial cysts commonly occur in the fourth and fifth decades of life and are more prevalent in females, with a ratio of 4:1.</p> Signup and view all the answers

    How does a median palatal cyst form?

    <p>The median palatal cyst forms from epithelial remnants at the line of fusion of the palatal processes.</p> Signup and view all the answers

    What clinical feature characterizes the median mandibular cyst?

    <p>The median mandibular cyst arises from epithelial entrapment at the midline during the fusion of the mandibular arches.</p> Signup and view all the answers

    What is a traumatic bone cyst, and how does it differ from typical cysts?

    <p>A traumatic bone cyst is a bony cavity without epithelial lining and often lacks fluid content.</p> Signup and view all the answers

    What treatment options are available for large cysts of the mandible?

    <p>Marsupialization may be needed for very large cysts to allow shrinkage of the bony defect.</p> Signup and view all the answers

    Describe the characteristic contents of an infected cyst.

    <p>An infected cyst may contain purulent yellowish fluid and cholesterol crystals.</p> Signup and view all the answers

    What clinical features differentiate an eruption cyst from other cyst types?

    <p>An eruption cyst appears as a soft rounded swelling over a tooth about to erupt, and may have a deep blue color if blood is present.</p> Signup and view all the answers

    What is a potential complication of odontogenic keratocysts?

    <p>Odontogenic keratocysts can transform into an ameloblastoma.</p> Signup and view all the answers

    What age group is most commonly affected by odontogenic keratocysts?

    <p>Odontogenic keratocysts most commonly affect individuals in their second and third decades of life.</p> Signup and view all the answers

    Identify one histopathologic feature of an odontogenic keratocyst.

    <p>The epithelial lining of an odontogenic keratocyst is a thin, regular, stratified squamous epithelium.</p> Signup and view all the answers

    What clinical symptoms might an infected odontogenic keratocyst produce?

    <p>It may produce paraesthesia of the lower lip, pain, and swelling of the jaws.</p> Signup and view all the answers

    How does the size of an eruption cyst affect the need for treatment?

    <p>Eruption cysts generally do not require treatment as they disappear spontaneously during tooth eruption.</p> Signup and view all the answers

    What is the primary clinical feature associated with the cyst described in the content?

    <p>The cyst is typically symptomless and may be found incidentally on routine radiography.</p> Signup and view all the answers

    What age group is most commonly affected by the aneurysmal bone cyst?

    <p>Individuals under 30 years of age, particularly in the second decade of life, are most commonly affected.</p> Signup and view all the answers

    Describe the radiographic appearance of the cyst mentioned in the content.

    <p>The cyst appears as a well-demarcated unilocular cavity located above the inferior alveolar canal.</p> Signup and view all the answers

    What is the recommended treatment for the cyst before closure?

    <p>The cavity is surgically opened, irrigated with saline, and the walls are scratched to promote bleeding before closure.</p> Signup and view all the answers

    What is a common histopathological finding in the cyst cavity?

    <p>The cyst cavity often contains remnants of blood or blood-stained fluid with no epithelial lining.</p> Signup and view all the answers

    What clinical feature is commonly observed in cases of aneurysmal bone cyst?

    <p>A firm swelling that is often painful and tender is commonly observed.</p> Signup and view all the answers

    What is the typical location of the cysts mentioned in the content?

    <p>The most common sites for these cysts are in the body and ramus of the mandible, particularly in the molar and premolar regions.</p> Signup and view all the answers

    What is one suggested pathogenesis for the aneurysmal bone cyst?

    <p>One suggested view is that it results from increased venous pressure leading to a dilated vascular bed in the bone area.</p> Signup and view all the answers

    What is the primary characteristic of a thyroglossal tract cyst regarding its appearance?

    <p>It appears as a slowly growing asymptomatic firm cystic midline mass.</p> Signup and view all the answers

    What type of epithelium lines a thyroglossal tract cyst below the level of the hyoid bone?

    <p>It is lined by ciliated or columnar type epithelium.</p> Signup and view all the answers

    How does infection affect a benign cervical lymphoepithelial cyst?

    <p>If infected, it may lead to abscess formation and the development of draining sinuses.</p> Signup and view all the answers

    What is the recommended treatment for both thyroglossal tract cysts and benign cervical lymphoepithelial cysts?

    <p>Complete surgical excision is recommended.</p> Signup and view all the answers

    Identify the typical location of a benign cervical lymphoepithelial cyst.

    <p>It is located on the lateral aspect of the neck, anterior to the sternomastoid muscle.</p> Signup and view all the answers

    What age group is most likely to present with benign cervical lymphoepithelial cysts?

    <p>They are most commonly seen in childhood and young adults.</p> Signup and view all the answers

    What connective tissue elements may be found in the wall of a thyroglossal tract cyst?

    <p>The wall may contain areas of thyroid tissue, lymphoid tissue, and mucous glands.</p> Signup and view all the answers

    During which stage of fetal development does the thyroid begin to form?

    <p>The thyroid starts to develop in the fourth week of intrauterine life.</p> Signup and view all the answers

    A cyst is a pathological cavity lined by epithelium containing _____ fluid or a semi-fluid material.

    <p>fluid</p> Signup and view all the answers

    Odontogenic cysts arise from _____ epithelial cells.

    <p>odontogenic</p> Signup and view all the answers

    Inflammatory periodontal cysts include apical, lateral, and _____ cysts.

    <p>residual</p> Signup and view all the answers

    The predominant type of cyst, accounting for 65% of all cysts, is the _____ cyst.

    <p>apical</p> Signup and view all the answers

    The epithelium associated with odontogenic cysts can be derived from the enamel organ and _____ rests of Malassez.

    <p>epithelial</p> Signup and view all the answers

    Non-odontogenic cysts include nasopalatine cysts and _____ cysts.

    <p>fissural</p> Signup and view all the answers

    _____ cysts may include dermoid, epidermoid, and benign lymphoepithelial types.

    <p>Soft tissue</p> Signup and view all the answers

    An apical cyst can be either apical or _____, related to the lateral root surface.

    <p>lateral</p> Signup and view all the answers

    In a newly formed cyst, the epithelium is __-plastic.

    <p>hyper</p> Signup and view all the answers

    The connective tissue lining of apical periodontal cysts contains collagen fibers, fibroblasts, and ___.

    <p>capillaries</p> Signup and view all the answers

    Cystic fluid typically contains serum albumin, globulin, cholesterol, and ___.

    <p>nucleoproteins</p> Signup and view all the answers

    Larger cysts may require __ to avoid damaging the antrum or important structures.

    <p>marsupialization</p> Signup and view all the answers

    Inflammatory lateral periodontal cysts form at the side of the root of a __ tooth.

    <p>pulpless</p> Signup and view all the answers

    Residual cysts can cause trouble with __ and may enlarge significantly.

    <p>dentures</p> Signup and view all the answers

    Multinucleated giant cells may be observed in the connective tissue lining of __ cysts.

    <p>apical periodontal</p> Signup and view all the answers

    Degenerated plasma cells in the connective tissue lining are also known as __ bodies.

    <p>Russel</p> Signup and view all the answers

    A developmental lateral periodontal cyst is a non-inflammatory cyst occurring adjacent to the root of a vital __________.

    <p>tooth</p> Signup and view all the answers

    The most common age range for developmental gingival cysts of adulthood is between __________ years.

    <p>40-60</p> Signup and view all the answers

    Gingival cysts appear as small, well-circumscribed painless swelling of the gingiva that is less than __________ in diameter.

    <p>1cm</p> Signup and view all the answers

    Bohn's Nodules, or gingival cysts of the newborn, originate from remnants of the __________ lamina.

    <p>dental</p> Signup and view all the answers

    The most common clinical site for a lateral periodontal cyst is the mandibular __________ region.

    <p>premolar</p> Signup and view all the answers

    Histopathologically, the epithelial lining in the developmental lateral periodontal cyst consists of thin stratified __________ epithelium.

    <p>squamous</p> Signup and view all the answers

    The appearance of a gingival cyst in adulthood includes a swelling of the __________ that appears nearly identical to the adjacent mucosa.

    <p>gingiva</p> Signup and view all the answers

    A developmental lateral periodontal cyst is commonly seen in individuals aged __________.

    <p>40-60</p> Signup and view all the answers

    The pathogenesis of this cyst is associated with mild trauma to the jaw that causes bleeding and __________ formation within bone.

    <p>haematoma</p> Signup and view all the answers

    About __________% of patients have a history of prior trauma to the area of involvement.

    <p>80</p> Signup and view all the answers

    The cyst is often discovered accidentally on routine __________.

    <p>radiography</p> Signup and view all the answers

    A cyst of the palatine papilla develops from the epithelial remnants in the palatine ______.

    <p>papilla</p> Signup and view all the answers

    In the anterior region, the outline of the cyst is usually round or __________ in shape.

    <p>oval</p> Signup and view all the answers

    The cavity of the aneurysmal bone cyst may appear resembling a __________ sponge.

    <p>blood-soaked</p> Signup and view all the answers

    Globulomaxillary cysts arise from non-odontogenic epithelial entrapped at the site of fusion of the globular and maxillary ______.

    <p>process</p> Signup and view all the answers

    The nasolabial cyst is more commonly found in females with a ratio of ______:1.

    <p>4</p> Signup and view all the answers

    The lining of the cyst is often described as thin fibrous or __________ tissue without an epithelial component.

    <p>granulation</p> Signup and view all the answers

    The median palatal cyst arises from epithelial remnants at the line of fusion of the palatal ______.

    <p>processes</p> Signup and view all the answers

    Aneurysmal bone cysts exhibit a slight __________ predilection, often affecting females more than males.

    <p>female</p> Signup and view all the answers

    The cyst is classified as a __________ because it appears radiographically as a cyst-like lesion but lacks an epithelial lining.

    <p>pseudocyst</p> Signup and view all the answers

    A ______ bone cyst is a bony cavity with no epithelial lining and often no fluid content.

    <p>traumatic</p> Signup and view all the answers

    Radiographic features of the nasolabial cyst may show negative results but might cause bone ______ due to pressure.

    <p>resorption</p> Signup and view all the answers

    Histopathologic features of cysts may include lining by embryonic cuboidal epithelium or ciliated ______ epithelium.

    <p>columnar</p> Signup and view all the answers

    The clinical feature of a globulomaxillary cyst often includes its location between the maxillary lateral incisor and ______ teeth.

    <p>canine</p> Signup and view all the answers

    The static bone cyst appears as a cystic or ______ area on radiographic examination.

    <p>radiolucent</p> Signup and view all the answers

    Fibrous connective tissue contains many blood-filled spaces and ______ blood cells.

    <p>extravasated</p> Signup and view all the answers

    Dermoied and epidermoid cysts appear in the anterior part of the floor of the mouth and sub-mandibular and sub-______ areas.

    <p>lingual</p> Signup and view all the answers

    To confirm the diagnosis of a static bone cyst, a ______ is made where a radiopaque material is injected.

    <p>sialogram</p> Signup and view all the answers

    The appearance of a soft tissue cyst is described as ______ growing and may vary in size.

    <p>lowly</p> Signup and view all the answers

    A thin layer of keratinized stratified squamous epithelium characterizes the histologic features of ______ cysts.

    <p>epidermoid</p> Signup and view all the answers

    The treatment for dermoid and epidermoid cysts usually involves ______ removal.

    <p>surgical</p> Signup and view all the answers

    The contents of a cyst may include numerous sebaceous glands, hair follicles, and ______.

    <p>teeth</p> Signup and view all the answers

    Match the cyst type with its key characteristic:

    <p>Epstein pearls = Midline cysts in newborns without treatment Dentigerous cyst = Associated with unerupted teeth Radicular cyst = Typically arises from necrotic pulp Mucocele = Commonly found in the oral cavity due to mucus retention</p> Signup and view all the answers

    Match the cyst type with its typical age range and sex predominant:

    <p>Dentigerous cyst = Second and third decades; more common in males Epidermoid cyst = Adolescence to young adults; no sex predilection Static bone cyst = Seen in various ages; no sex predilection Thyroglossal tract cyst = Can occur at any age; primarily in younger individuals</p> Signup and view all the answers

    Match the histopathologic feature with its associated cyst:

    <p>Dentigerous cyst = Non-keratinized stratified squamous epithelium Epidermoid cyst = Keratinized stratified squamous epithelium Odontogenic keratocyst = Parakeratinized epithelium Mucous extravasation cyst = Cystic space filled with mucus</p> Signup and view all the answers

    Match the radiographic feature with the corresponding cyst:

    <p>Dentigerous cyst = Well-defined, unilocular radiolucency Radicular cyst = Irregular, poorly defined radiolucency Odontogenic keratocyst = Multilocular radiolucency Static bone cyst = Unilocular and may show cortical expansion</p> Signup and view all the answers

    Match the cyst with its potential complications:

    <p>Dentigerous cyst = Prevention of tooth eruption Thyroglossal tract cyst = Infection due to trapped material Epidermoid cyst = Possible rupture causing inflammation Mucocele = Potential to enlarge and cause pain</p> Signup and view all the answers

    Match the term with its description related to dentigerous cysts:

    <p>Amelocemental junction = Attachment point of the cyst lining Cystic fluid accumulation = Precedes the development of cystic changes Root resorption = May occur in long-standing dentigerous cysts Facial asymmetry = Possible feature as cyst size increases</p> Signup and view all the answers

    Match the clinical feature with the associated cyst type:

    <p>Dentigerous cyst = Asymptomatic but may cause expansion or infection Radicular cyst = Painful swellings when infected Static bone cyst = Usually asymptomatic unless large Thyroglossal tract cyst = Displacement of the hyoid bone</p> Signup and view all the answers

    Match the cyst type with its common site of occurrence:

    <p>Dentigerous cyst = Mandibular third molar region Epidermoid cyst = Hair-bearing skin areas Thyroglossal tract cyst = Midline of the neck Benign cervical lymphoepithelial cyst = Lateral part of the neck</p> Signup and view all the answers

    Match the following cystic features with their descriptions:

    <p>Hyperplastic epithelium = In a newly formed cyst Regular flattened epithelium = In fully formed cysts Cystic fluid contents = Serum albumin and globulin Multinucleated giant cells = Found in the connective tissue lining</p> Signup and view all the answers

    Match the following treatment approaches with the corresponding cyst size:

    <p>Small cyst = Enucleation and apicectomy Medium size cyst = Remove tooth and enucleate cyst Large cysts = Marsupialization to avoid important structures Very large cysts = Enucleation and bone chips to fill cavity</p> Signup and view all the answers

    Match the following types of periodontal cysts with their characteristics:

    <p>Periapical granuloma = Small radiolucency Periapical scar = Previously treated periapical pathology Residual cyst = Persists in the jaw post-extraction Inflammatory lateral periodontal cyst = Forms at side of pulpless tooth</p> Signup and view all the answers

    Match the following cellular components found in cystic fluid with their types:

    <p>Serum albumin = Protein Globulin = Antibody component Cholesterol = Lipid Nucleoproteins = Nucleic acid-bound proteins</p> Signup and view all the answers

    Match the following inflammatory features with their histopathological descriptions:

    <p>Acute inflammatory cells = Present in connective tissue lining Cholesterol clefts = Found in the epithelial lining Eosinophilic Hyaline bodies = Thin, curved bodies from red blood cells Foam cells = Lipid-filled macrophages</p> Signup and view all the answers

    Match the following inflammatory responses with their corresponding conditions:

    <p>Epithelial hyperplasia = In early cyst formation Chronic inflammation = In fully formed cysts Dystrophic calcification = Haematoxyphilic masses Degenerated plasma cells = Russell bodies present</p> Signup and view all the answers

    Match the following terms with their corresponding definitions:

    <p>Cystic fluid = Contains albumin and cholesterol Marsupialization = Surgical procedure for large cysts Apicectomy = Removal of the apex of a tooth Enucleation = Complete removal of a cyst</p> Signup and view all the answers

    Match the following features with their associated tissues in apical periodontal cysts:

    <p>Collagen fibers = Form the connective tissue lining Fibroblasts = Support connectivity in cysts Capillaries = Supply nutrients to the epithelium Inflammatory cells = Present in connective tissue</p> Signup and view all the answers

    Match the types of cysts with their definitions:

    <p>Odontogenic keratocyst = Cyst derived from odontogenic epithelium, known for aggressive behavior Aneurysmal bone cyst = Pseudocyst characterized by blood-filled spaces Thyroglossal tract cyst = Cyst commonly located midline of the neck, formed during thyroid development Gingival cyst of adults = Cyst occurring in the gingiva, usually asymptomatic</p> Signup and view all the answers

    Match the periodontitis-related cysts with their specifics:

    <p>Apical cyst = Most common type, arises from periapical granuloma Lateral cyst = Related to lateral root surfaces or accessory canals Residual cyst = Leftover cystic lesion post tooth extraction Inflammatory cyst = Develops from inflammation in the periodontal ligament</p> Signup and view all the answers

    Match the origins of epithelium associated with odontogenic cysts:

    <p>Enamel organ = Source of epithelium in dentigerous cyst Epithelial rests of Malassez = Derived from periodontal ligament and involved in apical cysts Reduced enamel epithelium = Associated with the protective layer over developing teeth Epithelial rests of Serres = Involved in the formation of primordial cysts</p> Signup and view all the answers

    Match the cyst types to their classifications:

    <p>Nasopalatine cyst = Non-odontogenic cyst related to the incisive canal Primordial cyst = Odontogenic cyst that occurs in place of a tooth Median palatal cyst = Fissural cyst found in the maxilla Dermoid cyst = Soft tissue cyst located in the jaw and neck region</p> Signup and view all the answers

    Match the cyst types with their clinical characteristics:

    <p>Mucous retention cyst = Cystic lesion formed from duct obstruction leading to retention of mucus Static bone cyst = Pseudocyst that appears radiolucent but lacks epithelial lining Globulomaxillary cyst = Fissural cyst typically found between maxillary lateral and canine teeth Benign lymphoepithelial cyst = Soft tissue cyst found in association with lymphoid tissue</p> Signup and view all the answers

    Match the types of inflammatory cysts with their specific features:

    <p>Radicular cyst = Commonly caused by pulp necrosis and is rooted in periapical areas Apical cyst = Another term for radicular cyst when associated with tooth apex Lateral periodontal cyst = Cyst that can occur alongside roots of teeth but not typically apical Residual cyst = Cyst remaining at the site of previous extraction, potentially symptomatic</p> Signup and view all the answers

    Match the cyst-related terms with their meanings:

    <p>Pseudocyst = Pathological cavity not lined by epithelium Epidermoid cyst = Soft tissue cyst arising from epithelial elements typically along the neck Thyroglossal cyst = Cyst often located at midline, arising from thyroid development Aneurysmal bone cyst = Characterized by blood-filled cystic spaces within bone</p> Signup and view all the answers

    Match the cyst types with their associated dental structures:

    <p>Dental cyst = Linked to tooth development and its associated tissues Mucous extravasation cyst = Often occurs due to trauma affecting saliva glands Gingival cyst of newborn = Clinical presentation of Bohn's nodules on newborns' gums Cyst of palatine papilla = Located on the hard palate and involves nasal structures</p> Signup and view all the answers

    Match the types of cysts with their characteristics:

    <p>Globulomaxillary cyst = Located between the maxillary lateral incisor and canine teeth Nasolabial cyst = Soft tissue cyst causing swelling in the upper lip Median palatal cyst = Develops from epithelial remnants at the fusion of palatal processes Median mandibular cyst = Arises in the midline of the mandible during fusion of the arches</p> Signup and view all the answers

    Match the cysts with their locations or radiographic features:

    <p>Traumatic bone cyst = No epithelial lining and often no fluid content Pseudocyst = Cyst-like cavity without epithelial lining Fissural cysts = Arise from entrapped epithelium during embryonic processes Cyst of the palatine papilla = Presents as a fluctuant bluish swelling behind the mucosal covering</p> Signup and view all the answers

    Match the following cyst types with their key characteristics:

    <p>Static Bone Cyst = No epithelial lining, cystic appearance Dermoid Cyst = Contains hair follicles and sebaceous glands Epidermoid Cyst = Filled with keratin Soft Tissue Cyst = Painless, lowly growing bulge in the mouth</p> Signup and view all the answers

    Match the cysts with their etiology:

    <p>Globulomaxillary cyst = Non-odontogenic epithelial entrapment at fusion site Nasolabial cyst = Epithelial entrapment at fusion of nasal and maxillary processes Median palatal cyst = Epithelial remnants at the line of palatal fusion Median mandibular cyst = Epithelial entrapment in midline during mandibular fusion</p> Signup and view all the answers

    Match the cysts with their clinical features:

    <p>Globulomaxillary cyst = Divergence of roots of surrounding teeth Nasolabial cyst = More common in females aged 40-50 Median palatal cyst = May present as a soft tissue swelling Median mandibular cyst = Requires evaluation of midline of mandible</p> Signup and view all the answers

    Match the following radiographic features with their descriptions:

    <p>Multilocular Radiolucency = Honeycomb or soap-bubble appearance Ovoid Radiolucency = Sharply circumscribed beneath the dental canal Subperiosteal New Bone Deposition = Displaces teeth with root resorption Constant Cyst Size = Lesion does not increase in size over time</p> Signup and view all the answers

    Match the cysts with their histopathologic features:

    <p>Globulomaxillary cyst = Lined by cuboidal or columnar epithelium Nasolabial cyst = Soft tissue with a lack of alveolar involvement Median palatal cyst = Epithelial remnants indicative of palatal fusion Median mandibular cyst = Epithelial lining in the midline area</p> Signup and view all the answers

    Match the following treatment approaches with the appropriate lesions:

    <p>Curettage or Excision = Multilocular radiolucency Surgical Removal = Dermoid and Epidermoid cysts No Treatment Required = Static Bone Cyst Sialogram Diagnosis = Static Bone Cyst</p> Signup and view all the answers

    Match the cysts with their potential complications:

    <p>Nasolabial cyst = May lead to mild nasal obstruction Median palatal cyst = Can cause swelling on the roof of the mouth Median mandibular cyst = May affect the surrounding bone structure Traumatic bone cyst = Can cause pain but lacks epithelial changes</p> Signup and view all the answers

    Match the following histopathologic features with the respective cyst types:

    <p>Fibrous Connective Tissue = Multilocular radiolucency Thin Layer of Keratinized Epithelium = Epidermoid Cyst Many Blood-Filled Spaces = Multilocular radiolucency Presence of Salivary Tissue = Static Bone Cyst</p> Signup and view all the answers

    Match the following clinical features with the appropriate cysts:

    <p>Asymptomatic = Static Bone Cyst Young Adults, No Sex Predilection = Dermoid Cyst Figure Bulging on Palpation = Epidermoid Cyst Difficulty in Eating and Drinking = Dermoid Cyst</p> Signup and view all the answers

    Match the cysts with their radiographic findings:

    <p>Globulomaxillary cyst = Well-defined radiolucency between teeth Nasolabial cyst = Negative on X-ray but may cause bone resorption Median palatal cyst = Radiographically evaluates fusion areas Median mandibular cyst = Notable in midline observations on scans</p> Signup and view all the answers

    Match the cysts with their common symptoms:

    <p>Cyst of the palatine papilla = Salty fluid discharge upon rupture Globulomaxillary cyst = Displacement of adjacent teeth Median palatal cyst = Fluctuant swelling on the hard palate Traumatic bone cyst = Usually asymptomatic unless infected</p> Signup and view all the answers

    Match the following features with the corresponding treatments:

    <p>Instrumental Curettage = Curettage or excision for multilocular radiolucency Observation = Static Bone Cyst Surgical Intervention = Epidermoid and Dermoid Cysts Salivary Tissue Detection = Sialogram for Static Bone Cyst</p> Signup and view all the answers

    Match the following characteristics with their relevant descriptors:

    <p>External Circumscription = Round or ovoid radiolucency Intramural Swelling = Bulging in submental area Painless Growth = Cyst in the floor of the mouth Keratin-Filled Lumen = Epidermoid Cyst</p> Signup and view all the answers

    Match the following terms with their meanings:

    <p>Haemosiderin Histiocytes = Indicative of blood breakdown within a cyst New Osteoid Tissue = Present in multilocular radiolucency Developmental Inclusion = Cause of Static Bone Cyst Fluctuant Consistency = Common in Dermoid Cysts</p> Signup and view all the answers

    Match the following characteristics with the appropriate cyst type:

    <p>Aneurysmal Bone Cyst = Excessive bleeding resembling a blood-soaked sponge Traumatic Bone Cyst = Age below 40 years, typically in mandible</p> Signup and view all the answers

    Match the following clinical features with their associated cyst:

    <p>Aneurysmal Bone Cyst = Age under 30 years, often in jaws molar areas Traumatic Bone Cyst = Teeth associated often vital and not loosened</p> Signup and view all the answers

    Match the following key terms with their correct definitions:

    <p>Aneurysmal Bone Cyst = Involves resorption of bone by giant cells Traumatic Bone Cyst = Surgical treatment includes irrigation with saline</p> Signup and view all the answers

    Match the following radiographic features to the corresponding cyst types:

    <p>Aneurysmal Bone Cyst = Hematoma formation within bone Traumatic Bone Cyst = Appears as an unilocular cavity above inferior alveolar canal</p> Signup and view all the answers

    Match the following treatments with the applicable cyst types:

    <p>Aneurysmal Bone Cyst = Irrigation and closure of the cavity Traumatic Bone Cyst = Expected complete bone repair with no recurrence</p> Signup and view all the answers

    Match the following cyst features with their possible complications or characteristics:

    <p>Aneurysmal Bone Cyst = Resorption through giant cell activity Traumatic Bone Cyst = Lamina dura of roots remains intact</p> Signup and view all the answers

    Match the following age-related characteristics with cyst types:

    <p>Aneurysmal Bone Cyst = Occurs primarily in the second decade of life Traumatic Bone Cyst = Commonly diagnosed in early adulthood</p> Signup and view all the answers

    Match the following features with the correct histopathological findings:

    <p>Aneurysmal Bone Cyst = Presence of blood remnants in cyst cavity Traumatic Bone Cyst = Lack of epithelial component in lining</p> Signup and view all the answers

    What is the initial physical characteristic of the swelling associated with a radicular cyst?

    <p>Rounded and hard</p> Signup and view all the answers

    The epithelial lining of apical periodontal cysts can include stratified squamous epithelium.

    <p>True</p> Signup and view all the answers

    What is a common feature of radicular cysts when infected?

    <p>Painful swelling and rapid increase in size</p> Signup and view all the answers

    The apical periodontal cyst typically occurs in adults, particularly those in their ___________.

    <p>third to sixth decades</p> Signup and view all the answers

    Match the clinical features with their descriptions:

    <p>Fluid transport across the epithelial lining = Contributes to cyst enlargement Radiographic appearance of cyst = Round or ovoid well-defined radiolucency Age group most affected = Adults in their third to sixth decades Men to women ratio = More prevalent in men</p> Signup and view all the answers

    What is a typical radiographic feature of a radicular cyst?

    <p>Well-defined radiolucency with a thin opaque margin</p> Signup and view all the answers

    Radicular cysts are commonly symptomatic and are often discovered during routine x-ray examination.

    <p>False</p> Signup and view all the answers

    What happens to the epithelial mass if its central cells do not receive sufficient nutrients?

    <p>They degenerate, become necrotic, and liquefy.</p> Signup and view all the answers

    What is the primary treatment recommended for a benign cervical lymphoepithelial cyst?

    <p>Complete surgical excision</p> Signup and view all the answers

    A thyroglossal tract cyst can occur anywhere in the neck.

    <p>True</p> Signup and view all the answers

    What is the characteristic radiographic appearance of a static bone cyst?

    <p>Sharp, well-defined round or ovoid radiolucency</p> Signup and view all the answers

    What type of epithelium typically lines a thyroglossal tract cyst below the level of the hyoid bone?

    <p>Ciliated or columnar type epithelium</p> Signup and view all the answers

    Epidermoid cysts are typically painless and cause significant discomfort.

    <p>False</p> Signup and view all the answers

    The thyroglossal tract cyst is the most common ________ cyst of the neck.

    <p>developmental</p> Signup and view all the answers

    What histopathologic feature is commonly seen in dermoid cysts?

    <p>Thin layer of keratinized stratified squamous epithelium</p> Signup and view all the answers

    Which of the following age groups is most commonly associated with benign cervical lymphoepithelial cysts?

    <p>Young adults</p> Signup and view all the answers

    Match the following cyst types with their primary characteristic:

    <p>Thyroglossal tract cyst = Most common developmental cyst of the neck Benign cervical lymphoepithelial cyst = Located on the lateral aspect of the neck Both = Require surgical excision</p> Signup and view all the answers

    The treatment for soft tissue cysts of the jaws generally involves _____ removal.

    <p>surgical</p> Signup and view all the answers

    What happens to teeth in the presence of multilocular radiolucencies?

    <p>They may be displaced or have root resorption</p> Signup and view all the answers

    What is a clinical feature of a thyroglossal tract cyst if it becomes infected?

    <p>Dysphagia</p> Signup and view all the answers

    Histopathologically, benign cervical lymphoepithelial cysts are primarily lined with columnar epithelium.

    <p>False</p> Signup and view all the answers

    Match the following features with their respective cysts.

    <p>Static Bone Cyst = No epithelial lining Epidermoid Cyst = Thin layer of keratinized epithelium Dermoid Cyst = Contains sebaceous glands and hair follicles Soft Tissue Cysts = Painless and may vary in size</p> Signup and view all the answers

    A static bone cyst is a true cyst because it contains an epithelial lining.

    <p>False</p> Signup and view all the answers

    What is the primary technique used to confirm a diagnosis of a static bone cyst?

    <p>Sialogram</p> Signup and view all the answers

    What is the most common site for dentigerous cysts to occur?

    <p>Mandibular third molar</p> Signup and view all the answers

    Dentigerous cysts are more common in females than males.

    <p>False</p> Signup and view all the answers

    What is the primary cause of dentigerous cysts?

    <p>Cystic change of the reduced enamel epithelium</p> Signup and view all the answers

    The cyst lining of a dentigerous cyst is typically ___ cells thick.

    <p>2-4</p> Signup and view all the answers

    Match the following clinical features with their corresponding cyst types:

    <p>Dentigerous cyst = May prevent tooth eruption Epithelial cysts = Occur along the midline of the palate Long-standing dentigerous cyst = Can cause root resorption Infected dentigerous cyst = Causes pain and swelling</p> Signup and view all the answers

    Which radiographic feature is commonly associated with dentigerous cysts?

    <p>Well-defined unilocular radiolucency</p> Signup and view all the answers

    An expansion of a dentigerous cyst is likely due to increased fluid accumulation.

    <p>True</p> Signup and view all the answers

    What does the term 'dentigerous' refer to?

    <p>Containing unerupted tooth</p> Signup and view all the answers

    What are the components typically found in cystic fluid?

    <p>Serum albumin, globulin, cholesterol, and nucleoproteins</p> Signup and view all the answers

    Fully formed cysts have a regular and flattened epithelial lining.

    <p>True</p> Signup and view all the answers

    What is the treatment approach for large cysts?

    <p>Marsupialization to avoid important structures.</p> Signup and view all the answers

    Inflammatory lateral periodontal cysts form as a result of irritation of __________ tissue.

    <p>periodontal</p> Signup and view all the answers

    Match the following cyst characteristics with their definitions:

    <p>Collagen fibers = Connective tissue component of cysts Eosinophilic hyaline bodies = Thin, curved bodies related to red blood cells Cholesterol clefts = Fat deposits in cystic lesions Multinucleated giant cells = Cells formed by the fusion of macrophages</p> Signup and view all the answers

    Which of the following is a common complication of residual cysts?

    <p>Jaw fracture due to weakening</p> Signup and view all the answers

    Degenerated plasma cells, known as Russell bodies, are not typically found in apical periodontal cysts.

    <p>False</p> Signup and view all the answers

    What potential differential diagnosis could be considered for small radiolucencies?

    <p>Periapical granuloma</p> Signup and view all the answers

    What is the primary treatment for very large cysts of the mandible?

    <p>Marsupialization</p> Signup and view all the answers

    An eruption cyst requires surgical treatment to ensure proper healing.

    <p>False</p> Signup and view all the answers

    Name one potential complication of an odontogenic keratocyst.

    <p>Transformation into an ameloblastoma</p> Signup and view all the answers

    The cyst contents of keratocysts typically include ________ seen during operation.

    <p>keratin</p> Signup and view all the answers

    What is a common radiographic feature of unilocular lesions associated with primordial cysts?

    <p>Well circumscribed radiolucency with smooth margins</p> Signup and view all the answers

    Match the type of cyst with its treatment:

    <p>Eruption Cyst = Spontaneous resolution during eruption Odontogenic Keratocyst = Enucleation and possible follow-up Very Large Cyst = Marsupialization Infected Cyst = Antibiotic therapy may be required</p> Signup and view all the answers

    Which of the following describes the appearance of an eruption haematoma?

    <p>Soft rounded swelling deep blue in color</p> Signup and view all the answers

    Study Notes

    Cysts of the Oral and Paraoral Regions

    • A cyst is a pathological cavity lined by epithelium, containing fluid or semi-fluid material. Pseudocysts are not lined by epithelium.
    • Odontogenic cysts develop from odontogenic epithelial cells.
      • Periodontal cysts:
        • Inflammatory: Apical, lateral, or residual. These cysts result from inflammatory hyperplasia of epithelial rests of Malassez in the periodontal ligament, following pulp death.
        • Developmental: Lateral developmental cysts, adult gingival cysts, neonatal gingival cysts (Bohn's nodules). These develop from developmental processes.
      • Dentigerous cyst: A cyst around unerupted teeth. Types include central, lateral, and circumferential.
      • Primordial cyst: Another type of odontogenic cyst, also called the odontogenic keratocyst, most commonly characterized by parakeratotic or orthokeratotic layers and high recurrence rates.
    • Non-Odontogenic cysts originate from sources other than odontogenic epithelial cells.
      • Nasopalatine cysts: Incisive canal cyst, palatine papilla cyst. These are less than 1% of oral cysts.
      • Fissural cysts: Globulomaxillary, nasolabial, median (maxillary and mandibular), median palatal, and median mandibular cysts, stemming from epithelial entrapment.
      • Pseudocysts: (traumatic bone cyst, aneurysmal, and static bone cysts. These are not lined by epithelium, and are bony cavities.)
      • Soft tissue cysts: Dermoid, epidermoid, thyroglossal tract cysts, benign lymphoepithelial (branchial-cleft), mucous retention, mucous extravasation cysts, ranula.

    Epithelium of Odontogenic Cysts

    • The epithelium associated with odontogenic cysts derives from the enamel organ, reduced enamel epithelium, epithelial rests of Malassez, and epithelial rests of Serres.

    Inflammatory Periodontal Cysts

    • These cysts account for 65% of all cysts.
    • They arise from periapical granuloma caused by inflammatory hyperplasia.
    • The epithelial mass grows, central cells lose nutrition and degenerate, forming a cystic cavity.
    • Apical, periapical (radicular), or lateral positions are possible. Residual cysts occur when tooth extraction doesn't remove the cyst completely.

    Mechanism of Enlargement

    • Breakdown of complex proteins within the cyst lumen increases osmotic pressure.
    • Fluid transport across the semipermeable epithelial lining leads to cyst enlargement.

    Clinical Features of Periodontal Cysts

    • Age: Adults, typically between the third and sixth decades, slightly more common in men; can also affect younger people.
    • Sex: Slightly more common in men; can also affect younger people.
    • Location: Often in the anterior maxilla; can be along lateral and other areas.
    • Often asymptomatic, and discovered through routine x-rays. Rapid swelling, pain can occur with infection. Resorption of bone to an eggshell-like texture is possible.

    Microscopic Variations in Cyst Walls

    • Epithelial lining: Initially stratified squamous epithelium, but potentially respiratory or pseudostratified ciliated columnar epithelium.
    • Connective tissue lining: Contains inflammatory cells and foci of dystrophic calcification. Possibly cholesterol clefts, degenerating plasma cells (Russel bodies), eosinophilic or hyaline bodies (Rushton bodies), and multinucleated giant cells and lipid-filled macrophages (foam cells).

    Differential Diagnosis

    • Periapical granuloma: Small radiolucency; distinguishable from small periapical cysts by radiographic features.
    • Periapical scar: Previously treated periapical pathology.
    • Periapical cemental dysplasia: Differentiated by appearance and location.

    Other Types of Cysts (Pages 2-19)

    • Eruption cyst: Characterized by soft, rounded swellings with a deep blue appearance due to blood presence, erupting teeth; resolves spontaneously.
    • Primordial cyst: Least common type of odontogenic cyst. Often asymptomatic with a small, radiolucent, well-defined area and high recurrence risk. Can be parakeratotic or orthokeratotic in composition.
    • Nasopalatine duct cyst: Asymptomatic cyst in the mid-palatal area; less than 1% of all oral cysts.
    • Nasolabial cyst: Swelling not in the oral cavity.
    • Median palatal cysts: Palatal area, possibly asymptomatic.
    • Median mandibular cysts: Mandibular area, possibly asymptomatic.
    • Soft tissue cysts: Arise from epithelium entrapped during developmental processes and may include dermoid, epidermoid, ranula, thyroglossal tract cysts, and benign lymphoepithelial cysts.
    • Pseudocysts: are not lined by epithelium, including inflammatory lateral periodontal cysts, which are less common; they occur on the side of the root of a tooth caused by an opening in the lateral root. Also, aneurysmal, and static bone cysts.
    • (Developmental and Inflammatory Periodontal Cysts): These cysts have additional variations, such as those with different etiologies and locations. This includes the developmental lateral cyst, characterized by non-inflammatory developmental cysts adjacent or lateral to tooth roots, and residual cysts, which persist despite tooth extraction.
    • Mucous extravasation cyst: A soft tissue swelling often painless, in mouth areas; may have a translucent appearance.
    • Static bone cyst: Non-epithelial cyst; possibly developmental.

    Treatment

    • Surgical excision is often recommended for cysts.
    • Marsupialization is for very large cysts to prevent issues.

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    Cysts Of the Oral & Paraoral Regions PDF

    Description

    Test your knowledge on the pathology of various dental cysts, focusing on apical periodontal cysts, radicular cysts, and mucous extravasation cysts. This quiz covers key histopathologic features, radiographic signs, and clinical characteristics relevant to dental professionals. Dive into the nature of these cysts and their implications in dentistry.

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