A. 3
B. 6
C. 4
D. 5
Related Mcqs:
- The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______________?
A. Cusps
B. Roots
C. Lingual grooves
D. Marginal ridges - When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?
A. Permanent second molar
B. Permanent first molar
C. Second premolar
D. Primary first molar - In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________?
A. Distobuccal groove
B. Mesial surface
C. Mesiobuccal surface
D. Transverse groove - While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , decidous cuspid , decidous first molar, decidous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged_____________?
A. 3-6 years
B. 7-10 years
C. 11-14 years
D. 15- 18 years - A radiograph of 4- years old child reveals no evidence of calcification of mandibular second pre molar. This indicates______________?
A. It is too early to make final predication
B. The teeth may develop later
C. Primary second molar extracted to allow mesial drifting of permanent first molar
D. The child may never develop premolars - If a permanent first molar is lost, the permanent second molar drifts to the______________?
A. Buccal side
B. Distal side
C. Mesial side
D. Lingual side - The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?
A. Mesiolingual
B. Distolingual
C. Mesiobuccal
D. Distobuccal - Difference between mandibular and maxillary premolars is that in the mandibular premolars ?
A. The buccal and lingual cusps are more prominent
B. The lingual cusp is sharper and longer
C. The lingual surface rounded and less developed
D. The buccal surface is rounded and less developed - Permanent mandibular first molar is developed from ______ lobes?
A. 3
B. 4
C. 5
D. 6 - Root completion of the mandibular first molar takes place by the age_______________?
A. 7-8 years
B. 8-9 years
C. 9-10 years
D. 10 – 11 years