medical MCQs – Page 260

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 Review each marked answer and report any item that may be outdated or unclear.

5181. Which of the portions of the intra articular disc is the thinnest ?
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A. Posterior

B. retrodiscal

C. Anterior

D. Intermediate
5182. Which of the following is dental formula of a 9 years old child_____________?
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A. 76EDC21/ 7EDC21

B. EDC21/EDC21

C. 6EDCBA/ 6EDC21

D. 6 EDC21/ 6EDC21
5183. In how many years, the central incisors erupt as permanent teeth ______________?
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A. 17-25 years

B. 8-9 years

C. 10-12 years

D. 6-7 years

5184. All of the following muscles are elevators of the mandible except______________?
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A. Temporalis

B. Medial pterygoid

C. Digastric

D. Massetor

5185. Calcification of permanent first molar usually begins in the_____________?
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A. In the sixth month of intrauterine life

B. Third month of intrauterine life

C. At birth

D. In the third month of extra uterine life

5186. A child has 12 permanent and 12 decidous teeth, what is his age____________?
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A. 11 years

B. 8 years

C. 4 years

D. 13 years

5187. The largest mesiodistal diameter in primary dentition is____________?
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A. Maxillary 2nd molar

B. None of the above

C. Mandibular 1st molar

D. Mandibular2nd molar
5188. Articular disc of tmj receives insertion from which muscle______________?
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A. Massetor

B. Temporalis

C. Lateral pterygoid

D. Medial pterygoid

5189. Calcification of roots of decidous teeth is completed by_____________?
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A. 4 years

B. 2 years

C. 6 years

D. 8 years

5190. Curve passing through the buccal and lingual cusp tips of the mandibular buccal teeth is______________?
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A. Mansoon curve

B. Wilson curve

C. Caternary curve

D. Curve of spee

5191. Which of the following has the maximum faciolingual diameter of the crown__________?
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A. Decidous mandibular 2nd molar

B. Decidous maxillary 2nd molar

C. Decidous mandibular 1st molar

D. Decidous maxillary 1st molar

5192. The primary lateral incisors begin to calcify about the_____________?
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A. 41/2 month in utero

B. 5th month in utero

C. 4th month of life

D. 4th month in utero

5193. During the development of a tooth, sound coalescence of the lobes results in_____________?
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A. Cusps

B. Grooves

C. Fissures

D. All of the above

5194. As compared to permanent tooth , root formation in primary tooth______________?
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A. Is complete when tooth erupts in oral cavity

B. Take less time

C. Take more time

D. Same time

5195. The time taken for primary tooth root completion after eruption_____________?
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A. 1 month

B. 3 years

C. 2 years

D. 1 years
5196. Over jet is defined as______________?
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A. Transverse plane discrepancy

B. Vertical overlap

C. Horizontal overlap

D. All the above

5197. The tooth bud for the third molar is initiated at about the age of______________?
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A. 1st year of life

B. 6th month I.U

C. 2nd year of life

D. 8th year of life
5198. If a permanent first molar is lost, the permanent second molar drifts to the______________?
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A. Lingual side

B. Buccal side

C. Mesial side

D. Distal side

5199. Growth of all permanent teeth except last molars is completed by___________?
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A. 12 years

B. 17 years

C. 6 years

D. 8 years

5200. In anxious parent calls you that her 5- month -old child has still no teeth in his mouth then you should_____________?
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A. Call and do radiographic survey

B. Tell her that it is normal at this age

C. Child has retarded growth

D. Systemic problem