Resorption of root of primary incisors starts at_____________?

Related Mcqs:

1. First evidence of calcification of maxillary permanent central incisors occurs at_____________?

   A. 3-4 months
   B. 10-12 months
   C. 2-3 years
   D. 3-4 years

2. A 25 year old male patient reports with bony expansile swelling of the right body of the mandible & mild paresthesia of the right IDN. OPG shows a multi locular radiolucency without root resorption. What would be your choice of next investigation?

   A. Excision biopsy
   B. Aspiration Cytology
   C. CT Scan
   D. Pet Bone scan

3. The root of maxillary lateral incisors if curved is usually in which direction ?

   A. Distal
   B. Mesial
   C. Facial
   D. Palatal

4. In resorption of roots of the primary teeth, the dental pulp_____________?

   A. Plays a passive role
   B. Becomes a fibrotic non-vital mass
   C. Initiates resorption from the inner surface of roots
   D. Aids in formation of secondary dentin slowing down resorption

5. An abnormal resorption pattern in primary teeth, delayed eruption of permanent teeth and a large tongue are the feature of_____________?

   A. Addison’s disease
   B. Hypothyroidism
   C. Hyperthyroidism
   D. Von-Recklinghausen disease

6. A 4-year old child has less number of teeth and lateral incisors with bifurcated roots with two root canals is called_____________?

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

7. The primary lateral incisors begin to calcify about the_____________?

   A. 4th month of life
   B. 4th month in utero
   C. 41/2 month in utero
   D. 5th month in utero

8. Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?

   A. Superior and facial
   B. Inferior and facial
   C. Superior and lingual
   D. Inferior and lingual

9. The first macroscopic indication of morphologic development of primary incisors approximately at____________?

   A. 11 weeks in utero
   B. 14 weeks in utero
   C. 16 weeks in utero
   D. 6 weeks in utero

10. 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