The prbable reasons for a high incidence of dental caries in the teenage population relates most directly to______________?

Related Mcqs:

1. 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

2. Cavity formation in a tooth, due to dental caries is due to______________?

   A. Destructive potential of streptococcus mutans
   B. Destructive potential of lactobacillus acidophilus
   C. Lateral spread of caries along DE junction and weakening of the outer covering enamel
   D. Mastectomy force and unrelated to the extent of carious process

3. High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?

   A. Have less marginal breakdown
   B. Are workable at lower Hg-alloy ratio
   C. Have a higher ratio of tensile to compressive strength
   D. Have less resistance to tarnish and corrosion

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. Which of the following factors in the stephan’s curve is related to the caries incidence and sugar intake______________?

   A. Physical form of sugar
   B. Frequency of sugar intake
   C. Ph of Plaque
   D. Quantity of sugar intake

6. For a bacterium to be seriously considered in the etiology of dental caries, it must______________?

   A. Exist regularly in the dental plaque
   B. Produce extracellular amylopectins
   C. Be lethal for gnotobiotic animals
   D. Produce intracellular dextrans

7. The dietary carbohydrate most likely involved in etiology of dental caries in man is____________?

   A. Glucose
   B. Sucrose
   C. Dextran
   D. Polysaccharide

8. Miller put forth the acidogenic theory of dental caries in the year______________?

   A. 1890
   B. 1920
   C. 1924
   D. 1980

9. Intitation of dental caries depends upon_______________?

   A. Formation of large amount of acid
   B. Availability of carbohydrate food
   C. Viscosity of saliva
   D. Localization of acid over tooth surface

10. Pioneer bacteria in dental caries are in_____________?

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