Tooth eruption is due to______________?

Related Mcqs:

1. Movement of tooth to close the intermaxillary gap during eruption is due to____________?

   A. Physiological tooth migration
   B. Active eruption
   C. Passive eruption
   D. None of the above

2. Cavity formation in a tooth, due to dental caries is due to______________?

   A. Destructive potential of streptococcus mutans
   B. Destructive potential of lactobacillus acidophilus
   C. Lateral spread of caries along DE junction and weakening of the outer covering enamel
   D. Mastectomy force and unrelated to the extent of carious process

3. The most accepted theory of tooth eruption is____________?

   A. Hydrodynamic theory
   B. Clone theory
   C. Periodontal ligament traction theory
   D. Vascular theory

4. The maximum rate of eruption, as the tooth cusps reach the surface epithelium is around ________ μm/day?

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

5. In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?

   A. Bud stage begins
   B. Cap stage begins
   C. Bell stage begins
   D. Dental lamina begins forming

6. Beginning of eruption of permanent tooth starts_____________?

   A. After completion of root
   B. When apical third root is still to be formed
   C. When half of the root is still to be formed
   D. when root formation starts

7. 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

8. Periodontal fibres joining cemental surface of one tooth, to cemental surface of adjacent tooth are called____________?

   A. Gingivodental
   B. Cemental fibres
   C. Horizontal fibres
   D. Transseptal fibres

9. If the pulp of a single rooted tooth canal were triangular in cross section with the base of the triangle located facially and the apex lingually with a longer mesial side than distal side; the tooth most likely is_____________?

   A. Maxillary central incisor
   B. Maxillary second premolar
   C. Mandibular lateral incisor
   D. Mandibular central incisor

10. A tooth with a 3 month history of pain, which was worse when hot liquid were in mouth. After extraction, the tooth was split open. The pulp chamber was completely filled with pus. A few remnants of pulp tissue were found in apical end. The condition is:__________?

    A. Acute partial pulpits
    B. Acute total pulpits
    C. Suppurative pulpitis
    D. Strangulation of pulp