60 Questions
Which anomaly refers to the displacement of two adjacent teeth, more commonly seen in the permanent dentition?
Transposition
What anomaly involves the development of a tooth in an organ other than the jaws, such as inside the orbital cavity or in dermoid ovarian cysts?
Heterotopia
Which anomaly refers to teeth that are formed on the jaws but are far from the dental arch, and can remain impacted or erupt like normal teeth?
Ectopia
What is the term for anomalies defined as the displacement and orientation of the teeth, which can be real (congenital) or apparent (caused by a defect in jaw development, supernumerary teeth, or tumors)?
Position anomalies
Which anomaly refers to the tooth being on the jaw arch but not in the right place?
Displacement
Which type of position anomaly is common in supernumerary and wisdom teeth?
Inversion
What anomaly involves a diastema between the upper middle incisors?
Diastema
What type of anomaly can diastema between upper incisors lead to if it continues pathologically?
Hypodontia
What is a possible cause of size anomalies like microdontia and macrodontia?
Hormonal disorders
Which condition can microdontia be associated with?
Dwarfism
What type of anomaly are Peg Lateral teeth?
Localized microdontia
Which syndrome is associated with hyperdontia?
Down syndrome
Which syndrome is associated with hypodontia?
Ectodermal dysplasia
What is the clinical picture seen as a result of two teeth wanting to form from a single tooth germ?
Gemination
What anomaly refers to the fusion of the dentin of two different embryologically developing teeth?
Fusion
What is the absence of all primary and permanent teeth called?
Anodontia
Which anomaly is the angulation that occurs in the crown and root of the tooth due to trauma during the development of the tooth?
Dilaceration
What anomaly is the thickening of cement on the entire root surface or localized, which may be hereditary or due to trauma?
Hypercementosis
Which type of dental anomaly is primarily seen in the posterior maxillary region and is thought to be caused by trauma or malposition of the adjacent tooth?
Concrescence
What is the characteristic of Hypomaturation Type of Amelogenesis Imperfecta?
Poor calcification, low mineral content, and high organic content of enamel
Which anomaly occurs due to pauses during the histological differentiation, apposition, and mineralization stages of tooth development?
Dysplasia
What is the incidence of Dens in Dente in the maxilla?
7.7%
Which type of Amelogenesis Imperfecta is characterized by an insufficient amount of enamel formation during the histodifferentiation period of tooth development?
Hypoplastic Type
What is the cause of Concrescence?
Trauma or malposition of the adjacent tooth
What is the characteristic feature of dentinogenesis imperfecta Type 3?
Shell teeth with bell-shaped crowns and multiple pulp exposures
What distinguishes dentin dysplasia Type 2 from Type 1?
Amber-colored translucent primary teeth and funnel-shaped pulp chambers in permanent teeth
What can cause localized enamel hypoplasia?
Local infection
What is the result of Turner hypoplasia?
Pulp gangrene and inflammation in the apical region of the primary tooth
What are the characteristics of regional odontodisplasia?
Thin and slightly calcified enamel and dentin, large pulp chambers, and seashell-like crowns
What can cause enamel hypoplasias on the cusp crests of molars?
Systemic factors like nutritional deficiencies
What is the term for the type of position anomaly where a tooth erupts in the opposite direction, common in supernumerary and wisdom teeth?
Inversion
Which condition can microdontia be associated with?
Dwarfism
What is the term for a type of localized microdontia with conical lateral teeth and rounded premolar crowns?
Peg Lateral teeth
What anomaly refers to the thickening of cement on the entire root surface or localized, which may be hereditary or due to trauma?
Concrescence
Which syndrome is associated with hyperdontia?
Cleidocranial dysostosis
What is the term for the type of size anomaly involving a single tooth, seen in gigantism or cross heredity?
Macrodontia
Which developmental anomaly involves the development of a tooth in an organ other than the jaws?
Heterotopia
What is the term for the displacement of two adjacent teeth, more commonly seen in the permanent dentition?
Transposition
Which anomaly involves teeth formed on the jaws but far from the dental arch, which can remain impacted or erupt like normal teeth?
Ectopia
What is the term for the angulation that occurs in the crown and root of the tooth due to trauma during the development of the tooth?
Displacement
Which anomaly involves the thickening of cement on the entire root surface or localized, which may be hereditary or due to trauma?
Displacement
What anomaly refers to the diastema between the upper middle incisors?
Transposition
Which anomaly refers to the fusion of the dentin of two different embryologically developing teeth?
Concrescence
What is the term for anomalies defined as the displacement and orientation of the teeth, which can be real (congenital) or apparent (caused by a defect in jaw development, supernumerary teeth, or tumors)?
Position anomalies
What is the characteristic feature of dentin dysplasia Type 2?
Taurodontism
What anomaly involves a diastema between the upper middle incisors?
Gemination
Which syndrome is associated with hyperdontia?
Klinefelter syndrome
What is the incidence of gemination?
0.5-1%
Which type of Amelogenesis Imperfecta is characterized by poor calcification, low mineral content, and high organic content of enamel?
Hypomaturation Type
What is the condition called when there is incomplete development or underdevelopment of an organ or tissue?
Hypoplasia
Which anomaly involves the invagination of the inner enamel epithelium towards the pulp, occurring more commonly in the maxilla with an incidence of 7.7%?
Dens in Dente
What is the characteristic feature of Dentinogenesis imperfecta Type 2?
Translucent teeth independent of osteogenesis imperfecta
What is the anomaly that is primarily seen in the posterior maxillary region and is thought to be caused by trauma or malposition of the adjacent tooth?
Concrescence
What is the cause of localized enamel hypoplasia?
Trauma or primary tooth retention
What anomaly occurs due to pauses during the histological differentiation, apposition, and mineralization stages of tooth development?
Dysplasia
Which hereditary condition affects the structure, amount, and composition of enamel, and can be categorized into four main types?
Amelogenesis Imperfecta
What are the characteristics of Turner hypoplasia?
Pulp gangrene and inflammation in the apical region of the primary tooth
What is the characteristic of Dentin dysplasia Type 1?
Short roots
What can cause Enamel hypoplasias on the cusp crests of molars?
Systemic factors like nutritional deficiencies
What is the result of regional odontodisplasia?
Seashell-like crowns
Study Notes
Dental Tissue Anomalies and Disorders
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Dentinogenesis imperfecta is a hereditary condition affecting tooth development, resulting in amorphous, irregular dentin structure and obliterated pulp, leading to translucent teeth.
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Dentinogenesis imperfecta can cause serious wear on teeth and jaw joint disorders due to excessive wear, and radiographically, it shows excessive narrowing of the cervical area of the teeth, short and narrow roots, and a bell-ringed appearance.
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Dentinogenesis imperfecta is divided into three types: Type 1, associated with osteogenesis imperfecta; Type 2, hereditary opalescent dentin independent of osteogenesis imperfecta; and Type 3, shell teeth with bell-shaped crowns and multiple pulp exposures.
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Osteogenesis imperfecta is an autosomal dominant condition characterized by blue sclera, bone fragility, bone deformities, deafness, developmental disorders, and dental hypoplasia.
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Dentin dysplasia, an autosomal dominant disorder, includes two types: Type 1 (radicular) with short roots, and Type 2 (coronal) with amber-colored translucent primary teeth and funnel-shaped pulp chambers in permanent teeth.
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Regional odontodisplasia is caused by a regional vascular developmental anomaly, resulting in thin and slightly calcified enamel and dentin, large pulp chambers, shortened roots, and seashell-like crowns.
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Enamel hypoplasias, occurring on the vestibular surface of anterior teeth and cusp crests of molars, can be caused by systemic factors like nutritional deficiencies or local factors like infection or trauma.
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Enamel hypoplasias can be localized or generalized, and the localization of the hypoplasia can indicate the time of appearance of the harmful agent, such as febrile diseases affecting the cutting edges of central incisors.
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Conditions associated with generalized enamel hypoplasia include asthma, excessive radiation, Down syndrome, vitamin D-dependent rickets, pseudohypoparathyroidism, cerebral palsy, congenital syphilis, and fluorosis.
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Localized enamel hypoplasia can be caused by local infection, trauma, or primary tooth retention.
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Turner hypoplasia occurs as a result of pulp gangrene and inflammation in the apical region of the primary tooth, damaging the permanent tooth germ.
-
Enamel yellow-brown, mottled, pitted facial surfaces, taurodontism in molars, and large pulp chambers are characteristics of the tissue anomalies mentioned.
Dental Tissue Anomalies and Disorders
-
Dentinogenesis imperfecta is a hereditary condition affecting tooth development, resulting in amorphous, irregular dentin structure and obliterated pulp, leading to translucent teeth.
-
Dentinogenesis imperfecta can cause serious wear on teeth and jaw joint disorders due to excessive wear, and radiographically, it shows excessive narrowing of the cervical area of the teeth, short and narrow roots, and a bell-ringed appearance.
-
Dentinogenesis imperfecta is divided into three types: Type 1, associated with osteogenesis imperfecta; Type 2, hereditary opalescent dentin independent of osteogenesis imperfecta; and Type 3, shell teeth with bell-shaped crowns and multiple pulp exposures.
-
Osteogenesis imperfecta is an autosomal dominant condition characterized by blue sclera, bone fragility, bone deformities, deafness, developmental disorders, and dental hypoplasia.
-
Dentin dysplasia, an autosomal dominant disorder, includes two types: Type 1 (radicular) with short roots, and Type 2 (coronal) with amber-colored translucent primary teeth and funnel-shaped pulp chambers in permanent teeth.
-
Regional odontodisplasia is caused by a regional vascular developmental anomaly, resulting in thin and slightly calcified enamel and dentin, large pulp chambers, shortened roots, and seashell-like crowns.
-
Enamel hypoplasias, occurring on the vestibular surface of anterior teeth and cusp crests of molars, can be caused by systemic factors like nutritional deficiencies or local factors like infection or trauma.
-
Enamel hypoplasias can be localized or generalized, and the localization of the hypoplasia can indicate the time of appearance of the harmful agent, such as febrile diseases affecting the cutting edges of central incisors.
-
Conditions associated with generalized enamel hypoplasia include asthma, excessive radiation, Down syndrome, vitamin D-dependent rickets, pseudohypoparathyroidism, cerebral palsy, congenital syphilis, and fluorosis.
-
Localized enamel hypoplasia can be caused by local infection, trauma, or primary tooth retention.
-
Turner hypoplasia occurs as a result of pulp gangrene and inflammation in the apical region of the primary tooth, damaging the permanent tooth germ.
-
Enamel yellow-brown, mottled, pitted facial surfaces, taurodontism in molars, and large pulp chambers are characteristics of the tissue anomalies mentioned.
Test your knowledge of dental tissue anomalies and disorders with this quiz. Explore conditions like dentinogenesis imperfecta, osteogenesis imperfecta, dentin dysplasia, regional odontodisplasia, enamel hypoplasias, and Turner hypoplasia. Identify key characteristics and types of each condition while learning about their causes and effects on dental health.
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