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.Management Sciences
Category: Permanent Dentition
Maxillary first molar has how many roots ?
A. 1 facial and 2 lingual
B. 1 lingual and 2 facial
C. 1 mesial and 2 buccal
D. 1 mesial and 1 distal
Ratio of mesiodistal width to height of crown of maxillary canine is______________?
A. 6:10
B. 8:10
C. 6:8
D. 7:10
The most constant and valuable trait to differentiate among maxillary first, second and third molars i____________?
A. Number of roots
B. Depth of central fossae
C. Comparative size of the cusp of carabelli
D. Relative position of the distolingual grooves
Cusp of carbelli is present on ________ surface of the permanent maxillary molar ?
A. Mesial surface
B. Palatal surface
C. Buccal surface
D. Mesial half of the palatal surface
According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
A. 1½ 2 years
B. 2½ – 3 years
C. 3-4 years
D. 3-5 years
A distinguishing characteristic of a maxillary first premolar that identifies it as right or left is the________________?
A. Height of the lingual cusp
B. Mesial inclination of the lingual cusp
C. Flattened area beneath the contact on the distal surface
D. Greater length of the mesial cusp ridge on the lingual cusp ( AIPG- 98)
Largest cusp in permanent mandibular first molar is__________________?
A. Mesiobuccal
B. Distobuccal
C. Mesio lingual
D. Distal
Five cusps are present in___________________?
A. Maxillary first molar only
B. Mandibular first molar only
C. Maxillary and mandibular first molar
D. Maxillary and Mandibular second molar
The term diphydont means____________?
A. Second dentition
B. Two same sets of dentition
C. Two separate sets of dentition
D. More than two sets of dentition
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