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Questions and Answers
What is the primary cause of frictional keratosis?
What is the primary cause of frictional keratosis?
- Rough or misadjusted dentures
- Sharp cusps and edges of broken teeth
- Parafunctional behavior such as sucking trauma
- Chronic rubbing or friction against oral mucosa (correct)
What is the characteristic histopathological feature of alveolar ridge keratosis?
What is the characteristic histopathological feature of alveolar ridge keratosis?
- Dysplastic changes in the epithelium
- Chronic inflammatory cells in the connective tissue
- Marked hyperorthokeratosis, hypergranulosis and acanthosis (correct)
- Marked hyperplasia
Which of the following areas is commonly affected by frictional keratosis?
Which of the following areas is commonly affected by frictional keratosis?
- Soft palate
- Floor of the mouth
- Lips and lateral borders of tongue (correct)
- Palate
What is the primary goal of treatment for frictional keratosis?
What is the primary goal of treatment for frictional keratosis?
What is the characteristic feature of linea alba?
What is the characteristic feature of linea alba?
What is the most common association with linea alba?
What is the most common association with linea alba?
What is the term for habitual chewing or biting on the oral mucosa?
What is the term for habitual chewing or biting on the oral mucosa?
What is the primary concern for patients with frictional keratosis?
What is the primary concern for patients with frictional keratosis?
What is the likely diagnosis of a patient presenting with a white lesion in the oral cavity due to accumulation of urea in saliva?
What is the likely diagnosis of a patient presenting with a white lesion in the oral cavity due to accumulation of urea in saliva?
What is the main cause of thermal burn in the oral cavity?
What is the main cause of thermal burn in the oral cavity?
Which type of keratosis is caused by friction?
Which type of keratosis is caused by friction?
What is the treatment for uremic stomatitis?
What is the treatment for uremic stomatitis?
What is the normal color of oral mucosa?
What is the normal color of oral mucosa?
What is the likely diagnosis of a patient presenting with a white, diffuse, translucent milky appearance with folds resulting in wrinkling of the mucosa?
What is the likely diagnosis of a patient presenting with a white, diffuse, translucent milky appearance with folds resulting in wrinkling of the mucosa?
What is responsible for the white color in oral lesions?
What is responsible for the white color in oral lesions?
What is the factor that controls the color of oral mucosa?
What is the factor that controls the color of oral mucosa?
What is the treatment for electrical burn in the oral cavity?
What is the treatment for electrical burn in the oral cavity?
What is the main cause of uremic stomatitis?
What is the main cause of uremic stomatitis?
What is characterized by reduction in tissue production of keratin?
What is characterized by reduction in tissue production of keratin?
What is the characteristic appearance of leukoedema?
What is the characteristic appearance of leukoedema?
What is associated with reduced vascularity of the connective tissue?
What is associated with reduced vascularity of the connective tissue?
What is an example of a white lesion?
What is an example of a white lesion?
What is characterized by an increase in vascularity of the connective tissue?
What is characterized by an increase in vascularity of the connective tissue?
What is the term for the thickening of the outer layer of the epithelium?
What is the term for the thickening of the outer layer of the epithelium?
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Study Notes
Color of Oral Mucosa
- Normal color of oral mucosa is pink
- Resulting from the passage of light through the translucent superficial layer of soft tissues, striking the capillary bed, and reflecting back
- Factors controlling its color:
- Changes over the epithelium
- Changes within the epithelium
- Changes under the epithelium
White Lesions
- Caused by:
- Changes over the epithelium
- Changes within the epithelium
- Examples:
- Fungal infections producing whitish pseudomembranes
- Hyperkeratosis
- Uremic stomatitis (considered as a chemical burn)
- Electrical and thermal injuries of oral mucosa
- Reversible oral keratosis (e.g. frictional keratosis, smoker's keratosis, glass blower keratosis, actinic keratosis)
- Hereditary (genetic) conditions (e.g. leukoedema, white sponge nevus, hereditary benign intraepithelial dyskeratosis, follicular keratosis)
Leukoedema
- Unknown exact cause, but related to tobacco, betel nut chewing, and poor oral hygiene
- Genetic factor may be involved
- More common in dark adults, males more than females
- Asymptomatic and has a faint, diffuse, translucent, milky white appearance with folds resulting in wrinkling of the mucosa
Frictional Keratosis
- Caused by chronic rubbing or friction against oral mucosa
- Stimulates the epithelium to respond with increased production of keratin
- Protective mechanism against low-grade, long-term insult
- Common in areas that are commonly traumatized (e.g. lips, lateral borders of tongue, buccal mucosa along the occlusal line, and edentulous ridges)
Linea Alba
- A horizontal streak on the buccal mucosa
- Can present unilateral or bilateral at the level of the occlusal plane
- Associated with pressure, frictional irritation, or sucking trauma from the facial surfaces of the teeth
- No treatment required
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