441. A union of the roots of adjacent teeth through the cementum is referred to as_____________?
A. Concrescence
B. Fusion
C. Gemination
D. None of the above
442. Animals maintained in germ free environmental did not develop caries even when fed on a high carbohydrate diet is given by_____________?
A. Gottlieb
B. Miller
C. Synder
D. Orland and Fizgerald
443. Initiation of caries by streptococcus mutans is by the production of______________?
A. Dextranase and soluble dextran
B. Insoluble dextan and glucosyl transferase
C. soluble dextan and glucosyl transferase
D. None of the above
444. Ammonia causes______________?
A. Increase in plaque formation
B. Increase in calculus formation
C. Decrease in plaque formation
D. Causes precipitation of salivary proteins
445. Pioneer bacteria in dental caries are in_____________?
A. Enamel
B. Dentin
C. Pulp
D. Cementum
446. Teeth that erupt with in 30 days of birth are called________________?
A. Natal teeth
B. Neonatal teeth
C. Primary teeth
D. Prenatal teeth
447. The syndrom which consists of cleft palate micrognathia and glossoptosis is known as_____________?
A. Marfan’s syndrome
B. Crouzon’s syndrome
C. Paget’s disease
D. PierreRobin syndrome
448. Facial edema, cheilitis granulomatosa and a fissured tongue characterize which of the following syndromes ?
A. Frey
B. Melkerson-Rosenthal
C. Teacher Collins
D. None of the above
449. Globulamaxillary cyst is______________?
A. Soft tissue cyst present often between maxillary Lateral incisor and cuspid teeth
B. Often present between incisor and cuspid teeth but is a bone cyst
C. A cyst present between the midline of the palate
D. A cyst present in the incisive canal
450. Peg-shaped incisors which taper towards the incisal edge are typically seen in all of the following conditions EXCEPT______________?
A. Congenital syphilis
B. Rickets
C. Anhidrotic ectodermal dysplasia
D. Supernumerary teeth
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