medical MCQs – Page 266

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

5301. The primary centre of formation of each lobe is present in_____________?
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A. Centre of the tooth

B. Apex of the root

C. Tip of the cusp

D. Centre of the crown

5302. What is the functional form of anterior teeth from the mesial or the distal aspect ?
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A. Rhomboidal

B. Trapezoidal

C. Wedge- shaped

D. Elliptical

5303. The eruption age of maxillary permanent lateral incisor is________________?
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A. 8-9 years

B. 8-9 months

C. 6-7 years

D. 10-11 years

5304. Difference between mandibular and maxillary premolars is that in the mandibular premolars ?
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A. The buccal surface is rounded and less developed

B. The buccal and lingual cusps are more prominent

C. The lingual cusp is sharper and longer

D. The lingual surface rounded and less developed
5305. In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?
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A. Line connecting mesial with lingual is longest

B. Angle at the mesio facial canal is obtuse

C. Line connecting mesial with distal is longest

D. Line connecting distal with lingual is longest

5306. No. of cusps in mandibular 1st molar_____________?
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A. 4

B. 5

C. 6

D. 3

5307. Permanent mandibular first molar is developed from ______ lobes?
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A. 6

B. 5

C. 3

D. 4

5308. The term diphydont means____________?
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A. Two separate sets of dentition

B. Two same sets of dentition

C. More than two sets of dentition

D. Second dentition

5309. The maxillary molar crown of an early fossil primate featured a trigone made of three main cusps, these cusps were_____________?
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A. Distolingual, Mesiobuccal, and Linguo buccal

B. Distrobuccal, distolingual and Mesiolingual

C. Mesiobuccal, Distobuccal and Mesiolingual

D. Mesiolingual, Mesiobuccal and distolingual

5310. Protective crests of contour on buccal and lingual surfaces are found______________?
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A. In the middle third of the lingual

B. Nearest the occlusal third of the lingual

C. In the cervical third of the buccal

D. Both A and C
5311. The most constant and valuable trait to differentiate among maxillary first, second and third molars i____________?
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A. Comparative size of the cusp of carabelli

B. Relative position of the distolingual grooves

C. Depth of central fossae

D. Number of roots

5312. Fourth canal is present in_____________?
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A. Mesiobuccal roots of maxillary first molar

B. Distal root of mandibular first molar

C. Both of the above

D. None of the above

5313. The shape of the occlusal surface of the permanent maxillary first molar is_______________________?
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A. Oval

B. Trapezoidal

C. Rhomboidal

D. Triangular

5314. The two major fossa of permanent maxillary first molar________________?
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A. Distal fossa and distal tringaular fossa

B. Mesial and distal tringular fossa

C. Central fossa and mesial fossa

D. Central and distal fossa
5315. The mesial contact are of the permanent canine is at the_______________?
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A. Junction of the middle & cervical thirds

B. Middle third

C. None of the above

D. Junction of incisal and medial thirds

5316. Which teeth the proximal aspect shows rhomboidal appearance________________?
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A. Maxillary posteriors

B. Mandibular posteriors

C. Maxillary anteriors

D. Mandibular anteriors

5317. According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
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A. 2 3 years

B. 3-4 years

C. 3-5 years

D. 1 2 years

5318. Upper 4 resembles 5 from which aspect ?
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A. Lingually

B. Occlusal

C. Buccally

D. Proximally

5319. The occlusal surface shape of a 3 cusped mandibular second premolar_________________?
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A. Square

B. Oval

C. Tetrahedral

D. Elliptical

5320. Most common morpholgical variation is seen in________________?
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A. Mandibular lateral incisor

B. Maxillary canine

C. Maxillary lateral incisor

D. Mandibular canine