Root lengthening is contributed by____________?

Related Mcqs:

1. The hertwig’s epithelial root shealth is essential to development of the root because it_______________?

   A. Gives rise to cementoblasts that produce cementum of the root
   B. Moulds the shape of roots and stimulates differentiation of odontoblasts
   C. Given rise to odontoblasts that lay down dentin of the root
   D. Remians as an essential constituents of the periodontal ligament

2. Reestablishing the former outline of the root surface is_____________?

   A. Anatomic repair
   B. Functional repair
   C. Physiological repair
   D. Hyperplasia

3. The cementuoenamel junction is approximately at the level at which the root canal becomes_____________?

   A. Twisted
   B. Curved
   C. Pulp chamber
   D. Lateral canal

4. Cementum that forms in conjunction with root end formation and eruption_____________?

   A. Cellular cementum
   B. Acellular cementum
   C. Both of the above
   D. None of the above

5. Cross linking in denture base resin is contributed by_____________?

   A. Glycol dimetharylate
   B. Benzoyl peroxide
   C. N-para toluidine
   D. Methyl methacrylate

6. Hertwig’s root sheath is formed from______________?

   A. Stratum inter medium
   B. Stellate reticulum
   C. Outer enamel epithelium
   D. Cervical loop

7. Hertwig’s epithelial root sheath is made up of_______________?

   A. Outer and inner enamel epithelium
   B. Stratum intermedium
   C. Stellate reticulum
   D. Hyaline layer of Hopewell-smill

8. The type of dentin that is formed prior to root completion______________?

   A. Inter tubular dentin
   B. Peritubular dentin
   C. Circum pulpal dentin
   D. Secondary dentin

9. Remnants of the Hertwig’s root sheath are found in____________?

   A. Gingiva
   B. Alveolar bone
   C. Periodontal ligament
   D. Cementum

10. Development of supporting tissues of the tooth is initiated by____________?

    A. Cells of dental follicle
    B. Cells of odontogenic layer
    C. Cementoblasts
    D. Cells of the gingiva