medical MCQs – Page 258

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 Review each marked answer and report any item that may be outdated or unclear.

5141. Group function occlusion is common in_____________?
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A. Above 30 years

B. 15 -25 years

C. Edentulous patients

D. 10 14 years

5142. Kalu, a 6- years old child, received tetracycline. Noticeable discoloration will be seen in______________?
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A. Canines, premolars and2nd molars

B. Incisors and 1st molars

C. Canine and 2nd molars

D. Premolars, incisors and 1st molars

5143. The premolar alveoli are what shape in cross section_____________?
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A. Triangular

B. Rectangular

C. Oval

D. Kidney shaped
5144. When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?
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A. Permanent first molar

B. Permanent second molar

C. Second premolar

D. Primary first molar

5145. The first permanent tooth to erupt in the oral cavity is the_____________?
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A. Mandibular first molar

B. Mandibular central incisor

C. Maxillary central incisor

D. Maxillary first molar

5146. In occlusion the teeth have_______________?
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A. Surface to surface contact

B. Edge to edge contact

C. Cusp to cusp contact

D. Marginal contact

5147. Primary canine erupts______________?
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A. After D

B. Before B

C. After B

D. After E

5148. The first evidence of calcification of primary anterior teeth begins approximately between ______________?
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A. 9 to 12 weeks in utero

B. 6- to 9 weeks in utero

C. 17 to 20 weeks in utero

D. 14 to 17 weeks in utero
5149. Cervical bulge. True is____________?
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A. Enamel rods at cervical region directed occlusally

B. All of the above

C. Is characteristic of decidous teeth

D. Results in constriction at cervical region

5150. Resorption of root of primary incisors starts at_____________?
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A. 8 yrs

B. 6 yrs

C. 4 yrs

D. 10 yrs

5151. Retrusion of mandible is achieved by _______________?
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A. Temporalis

B. Masseter

C. None of the above

D. Lateral pterygoid

5152. When a molar has no opposing tooth, it can become_______________?
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A. Protruded

B. Intruded

C. Retruded

D. Extruded
5153. Which of these teeth are highly sturdy and usually the last ones to be lost ?
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A. Canines

B. Premolars

C. First molar

D. Central incisors

5154. First evidence of initiation of primary dentition is usually around_____________?
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A. Birth

B. 4 months after birth

C. One year after birth

D. 4 months in utere
5155. Number of teeth seen on X- ray at birth_______________?
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A. 22

B. 20

C. 30

D. 24
5156. The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?
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A. Distolingual

B. Mesiobuccal

C. Distobuccal

D. Mesiolingual
5157. Forward moment of mandible is done by_________?
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A. Medial pterygoid

B. Temporalis anterior fibers

C. Lateral pterygoid

D. Temporalis- posterior fibers

5158. The direction of enamel rods in decidous teeth is_____________?
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A. Inclined in an apical direction in the cervical third of crown

B. Same as permanent teeth

C. Inclined in an occlusal direction in the cervical third of crown

D. None of the above

5159. Generally in majority of children, the sequence of eruption of permanent teeth in mandible is____________?
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A. 6-1-2-4-5-3-7-8

B. 1-6-2-3-5-4-7-8

C. 6-1-2-4-3-5-7-8

D. 6-1-2-3-4-5-7-8
5160. First permanent molars begin to calcify at ______________?
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A. About 1 year after birth

B. At birth

C. Before decidous incisors

D. 6 months of intra utrerine life