In a caries-free individual the saliva has_____________?

Related Mcqs:

1. Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?

   A. Base to base
   B. Apex to base
   C. Apex to apex
   D. None of the above

2. Progression of dental caries caries on pit and fissure occurs from:

   A. Apex of the pit and fissure
   B. Wide and of the pit and fissure
   C. Lateral surface of the pit and fissure
   D. Bottom of the pit and fissure

3. 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

4. The number of dentinal zones in dentinal caries is_____________?

   A. One
   B. Two
   C. Four
   D. Five

5. Which tooth in the permanent dentition is the most susceptible to dental caries ?

   A. Maxillary 1st premolar
   B. Maxillary 2nd molar
   C. Mandibular 1st molar
   D. Mandibular 2nd molar

6. Streptococcus mutans is considered to be principle etiologic agent of caries because it produces organic acids and it ________________?

   A. Forms a gelatinous matrix
   B. Metabolizes substrate from saliva
   C. Derives energy from enamel constituents
   D. Lives symbiolically with lactobacillus

7. Organism involved in smooth surface caries is____________?

   1 Streptococcus mutans
   2 Actinomyces viscosus
   3 Lactobacillus
   4 Campylobacter

   A. only 1
   B. only 2
   C. 1 and 3
   D. All of the above

8. The lateral spread of dental caries is facilitated mostly by the_______________?

   A. Enamel spindles
   B. Dentinoenamel junction
   C. Enamel lamellae
   D. Striae of Retzius

9. Chemico-parasitic theory of dental caries is proposed by______________?

   A. Miller
   B. G.V black
   C. Gottlieb
   D. Schwartz

10. Pioneer bacteria in dental caries are in_____________?

    A. Enamel
    B. Dentin
    C. Pulp
    D. Cementum