What is the PH at which initiation of caries begin ?

Related Mcqs:

1. S. mutans is involved in dental caries initiation Other bacteria also involved is______________?

   A. S. Sarcinus
   B. S. macae
   C. S. sanguis
   D. S. salivarius

2. Bacteria responsible for initiation of caries is _________________?

   A. Actinomyces
   B. Strep. mutans
   C. Lactobacillus
   D. Strep. viridans

3. 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

4. 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

5. 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

6. First evidence of initiation of primary dentition is usually around_____________?

   A. 4 months in utere
   B. Birth
   C. 4 months after birth
   D. One year after birth

7. The initiation codon for protein synthesis is_____________?

   A. AUG
   B. UAA
   C. UUU
   D. UAG

8. Which of the following anomalies occur during the initiation and proliferation of tooth development ?

   A. Amelogenisis imperfecta
   B. Dentinogenesis imperfecta
   C. Enamel hypoplasia
   D. Oligodontia

9. Dental caries is associated with_____________?

   A. Streptococcus agalactiae
   B. Streptococcus mutans
   C. Streptococcus bovis
   D. Streptococcus anginosus

10. 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