The number of dentinal zones in dentinal caries is_____________?

Related Mcqs:

1. The corrct order of microscopic zones of dentinal caries starting from the D.E junction is_______________?

   A. Zone of sclerosis, decalcification zone, bacterial invasion
   B. Bacterial invasion, decalcification zone, zone of sclerosis
   C. Zone of sclerosis, backterial invasion, decalcification zone
   D. Decalcification zone, zone of scierosis, backterial invasion

2. 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

3. 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

4. Dentinal union of two embryologically developing teeth is referred as______________?

   A. Gemination
   B. Twinning
   C. Concrescence
   D. Fusion

5. Dentinal tubules are______________?

   A. Concave
   B. Straight
   C. S0shaped
   D. None of the above

6. Mirgration of odontoblasts into dentinal tubules occurs during ________________?

   A. Cavity preparation
   B. Dehydration
   C. Water irrigation
   D. None of the above

7. Dentinal tubules are calcified in_______________?

   A. Sclerotic dentin
   B. Primary dentin
   C. Secondary dentin
   D. Interglobular dentin

8. The average diameter of coronal dentinal tubules near the pulp is____________?

   A. 0.2-0.5 microns
   B. 2-3 microns
   C. 0.2-0.3 microns
   D. 7 microns

9. The organic lining of the calcified dentinal tubules is known as_______________?

   A. Lamina propria
   B. Lamina lucida
   C. Lamina limitans
   D. Lamina densa

10. Excess deposition of calcium in the dentinal tubules is referred to as______________?

    A. Sclerotic dentin
    B. Mantal dentin
    C. Interglobular dentin
    D. Intertubular dentin