The enamel of the posterior teeth is thickest at____________?

Related Mcqs:

1. calcification in enamel starts at____________?

   A. Enamel matrix
   B. Root
   C. CEJ
   D. DEJ

2. A 20yr old patient reports with multiple swelling of the jaws. Clinical examination reveals multiple hard swellings involving the jaws and intra orally several missing teeth are noticed. Panoramic radiograph reveals multiple radio opaque lesions in the maxilla and the mandible with multiple impacted teeth and supernumerary teeth indicative of Gardeners syndrome: The above mentioned condition is______________?

   A. Autosomal dominant disease
   B. Autosomal recessive disorder
   C. X-linked disease
   D. A syndrome of unknown cause

3. 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

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

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

5. 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

6. Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________?

   A. Straight
   B. Shallow
   C. Bent
   D. Curved

7. The thickness of prismless enamel in diciduous teeth is______________?

   A. 25 μ m
   B. 50 μ m
   C. 75 μ m
   D. 100 μ m

8. Generally , contact areas between posterior teeth are located in which directions from the centr of the proximal surface ____________?

   A. Facially and occlusally
   B. Facially and gingivally
   C. Lingually and gingivally
   D. Lingually and occlusally

9. Buccal surface of posterior teeth are wider than lingual surface mesiodistally except in______________?

   A. Maxillary first molar
   B. Mandibular second premolar
   C. Mandibular first molar
   D. Maxillary second premolar

10. The geometric outline of the buccal surface of posterior teeth are_______________?

    A. Trapezoidal
    B. Rhomboidal
    C. Quadrilateral
    D. Square