431. Does a patient notice a well-demarcated area of depopulation on his tongue which has been there for as long as he can remember, The most probable diagnosis_____________?
A. Median rhomboid glossitis
B. Geographic tongue
C. Black hairy tongue
D. Moeller’s glossitis
432. Dentinogensis imperfecta differs from amelogenesis imperfecta in that, the former is_____________?
A. A hereditary disturbance
B. The result of excessive fluoride ingestion
C. The result of faulty enamel matrix formation
D. Characterized by calcification of pulp chambers and the root canals of the teeth
433. Ghost teeth is seen in which of the following_________________?
A. Dens is dent
B. Regional odontodysplasia
C. Dentin dysplasia
D. None of the above
434. Gemination of teeth occur due to______________?
A. Division of a single tooth bud after calcification
B. Division of a single tooth bud before calcification
C. Fusion of two teeth before calcification
D. Fusion of two teeth after calcification
435. True ankyloglossia occurs as a result of________________?
A. Union between tongue and floor of mouth
B. Absence of lingual frenum
C. Lingual frenum attached to the tip of tongue
D. Short lingual frenum
436. False about anodontia_______________?
A. May involve both the deciduous and the permanent dentition
B. In false anodontia tooth doesn’t undergo full development
C. May involve a single tooth
D. In total anodontia all teeth are missing
437. Ectopic sebaceous glands in the mouth are called________________?
A. Linea alba buccalis
B. Heck’s disease
C. Lingual verices
D. Fordyce spots
438. Clinical evidence of dentinogenesis imperfecta is______________?
A. Defective enamel and dentine
B. Defective dentine and obliterated pulp chamber
C. Increased rate of caries
D. Oligodontia
439. Lingual tonsils arise___________________?
A. As developmental anomalies
B. From carcinomatous transformation
C. As a result of hyperpalsia
D. Due to repeated trauma in the area
440. Most common missing tooth in the permanent dentition is_____________?
A. Maxillary canine
B. Maxillary first molar
C. Mandibular second premolar
D. Mandibular first molar
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