Deficiency of which of the following will cause enamel hypoplasia ?

Related Mcqs:

1. Which of the following is unlikely to cause enamel hypoplasia ?

   A. Rickets
   B. Fluoride
   C. Congenital syphilis
   D. Cleidocranial dysostosis

2. A disease which only affects the formation and eruption of tooth but does not cause hypoplasia is______________?

   A. Hypoparathyroidism
   B. Hyperthyroidism
   C. Rickets
   D. Syphilis

3. 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

4. Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?

   A. 1:4
   B. 1:1
   C. 1:2
   D. 2:1

5. Temporary structures in enamel organ are (before enamel formation) ?

   A. Enamel knot
   B. Enamel cord
   C. Both A and B
   D. Enamel Cuticle

6. Turner’s hypoplasia most commonly affects________________?

   A. Deciduous maxillary anteriors
   B. Deciduous mandibular anteriors
   C. Permanent maxillary anteriors
   D. Permanent manibular anteriors

7. Chronological hypoplasia is_____________?

   A. Hypoplasia of local origin
   B. Hypoplasia of systemic origin
   C. Hypoplasia of hereditary origin
   D. None of the above

8. Which of the following is correct about enamel crystals ?

   A. Same as dentin crystals
   B. Contains organic portion in the center
   C. Roughly texagonal in shape
   D. Their diameter is about 5 microns in size

9. At the cemento enamel junction, which of the following occurs_____________?

   A. Cementum meets enamel
   B. Cementum overlaps enamel
   C. Cementum does not meet enamel
   D. All of the above

10. Which of the following show chemical bond with enamel (Calcified tissues)______________?

    A. Composites
    B. Direct filling resins
    C. Polycarboxylate cements
    D. BIS-GMA resins in pit and fissure sealants