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. SynderD. Orland and Fizgerald
Initiation of caries by streptococcus mutans is by the production of______________? A. Dextranase and soluble dextranB. Insoluble dextan and glucosyl transferase C. soluble dextan and glucosyl transferase D. None of the above
Ammonia causes______________? A. Increase in plaque formation B. Increase in calculus formationC. Decrease in plaque formation D. Causes precipitation of salivary proteins
Pioneer bacteria in dental caries are in_____________? A. EnamelB. Dentin C. Pulp D. Cementum
Chemico-parasitic theory of dental caries is proposed by______________? A. Miller B. G.V black C. Gottlieb D. Schwartz
In a caries-free individual the saliva has_____________? A. low buffering capacity of acids B. Medium buffering capacity for acidsC. High buffering capacity for acids D. Independent of buffering capacity for acids
The lateral spread of dental caries is facilitated mostly by the_______________? A. Enamel sdlesB. Dentinoenamel junction C. Enamel lamellae D. Striae of Retzius
Caries, all are true except______________? A. Lactobacillus is main acusative organism in plaque B. Smooth surface caries occur due to streptococcus mutans C. Pit and Fissure caries can be prevented by using pit and tissue sealants D. Fluorides help in…
Intitation of dental caries depends upon_______________? A. Formation of large amount of acid B. Availability of carbohydrate food C. Viscosity of salivaD. Localization of acid over tooth surface
Miller put forth the acidogenic theory of dental caries in the year______________? A. 1890 B. 1920 C. 1924 D. 1980