Dental lamina is active up to_______________?

Related Mcqs:

1. The formation of the dental lamina is initiated by______________?

   A. Forebrain
   B. Rathke’s pouch
   C. Neural crest cells
   D. Odontoblasts

2. Cyst arising from dental lamina:___________________?

   A. Radicular cyst
   B. Paradental cyst
   C. Eruption cyst
   D. Glandular odontogenic cyst

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. Powders of dental plaster and dental stone differ mainly in____________?

   A. Solubility
   B. Shelf life
   C. Chemical formula
   D. Particle porosity

5. The main difference between dental stone and dental plaster is______________?

   A. Chemical composition
   B. Self life
   C. Sharpe and size of particles
   D. Solubility in water

6. The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?

   A. 19
   B. 20
   C. 21
   D. 26

7. Lamina densa of the gingival basement membrane is rich in_____________?

   A. Type I and III collagen
   B. Type III collagen
   C. Type IV collagen
   D. Type I collagen

8. Bulk of lamina propria of the gingiva is made of collagen type_______________?

   A. I
   B. II
   C. III
   D. IV

9. Calcium content of lamina dura is______________?

   A. More than the other parts of alveolar bone
   B. Less than the other parts of alveolar bone
   C. Same as in other parts of alveolar bone
   D. Less than the cementum

10. Alveolar bone proper is also known as: or Which of the following is seen as lamina dura in an IOPA radiograph ?

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