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.Management Sciences
Category: Oral Anatomy
Which of the following premolars has a mesial marginal ridge more cervical than the distal marginal ridge________________?
A. Maxillary 1st premolar
B. Maxillary 2ndpremolar
C. Mandibular 1st premolar
D. Mandibular 2nd premolar
The shortest root on a maxillary first molar is_____________?
A. Mesio- buccal
B. Disto – buccal
C. Lingual
D. All are of equal length
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
On opening the mouth , if the jaw deviates to the right side, it indicates the paralysis of__________?
A. Right lateral pterygoid
B. Left lateral pterygoid
C. Right medial pterygoid
D. Left medial pterygoid
Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
The key to occlusion is_______________?
A. Maxillary permanent first molar
B. Maxillary permanent second molar
C. Maxillary primary first molar
D. Maxillary primary second molar
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
The first evidence of calcification of primary anterior teeth begins approximately between ______________?
A. 14 to 17 weeks in utero
B. 9 to 12 weeks in utero
C. 6- to 9 weeks in utero
D. 17 to 20 weeks in utero
Desmodont is another name for_____________?
A. The tooth with one wall pocket
B. Tooth with three walled pocket
C. periodontal ligament
D. Dehiscence
Fourth canal is present in_____________?
A. Mesiobuccal roots of maxillary first molar
B. Distal root of mandibular first molar
C. Both of the above
D. None of the above
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