oral anatomy MCQs – Page 9

Practise focused oral anatomy questions with marked answers for exam preparation and subject revision.

oral anatomy Mcqs

161. The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______________?
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A. Roots

B. Marginal ridges

C. Cusps

D. Lingual grooves

162. Average of length of maxillary cuspid is______________?
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A. 33 mm

B. 21 mm

C. 18 mm

D. 26 mm

163. Mesial slope of buccal cusp is longer than distal slope in_________________?
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A. Mandibular canine

B. Maxillary canine

C. Maxillary 1st premolar

D. Maxillary 2nd premolar

164. Which of the premolars is usually the smallest____________?
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A. Maxillary second

B. Maxillary first

C. Mandibular first

D. Mandibular second

165. Oblique ridge in maxillary first molar joins which of the following cusps____________________?
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A. DL and DB

B. ML and DB

C. ML and MB

D. DL and MB

166. The root of maxillary lateral incisors if curved is usually in which direction ?
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A. Facial

B. Distal

C. Palatal

D. Mesial

167. Palatogingival groove is found in______________?
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A. Maxillary first molar

B. Maxillary lateral incisor

C. All of the above

D. Maxillary first premolar

168. Ratio of mesiodistal width to height of crown of maxillary canine is______________?
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A. 6:08

B. 6:10

C. 7:10

D. 8:10

169. Following eruption , the root of the maxillary central incisor completes development at what approximate age ?
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A. 7 years

B. 9 years

C. 8 years

D. 10 years

170. The number of line angles a permanent maxillary central incisor is_____________?
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A. Two

B. Six

C. Four

D. Eight

171. The root trunk of permanent mandibular first molar buccally is______________?
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A. equal in length to the crown

B. Equal is length to the mesial bifurcation of the maxillary first molar

C. None of the above

D. Equal is length to the buccal bifurcation of the maxillary first molar

172. Which of the following is true of permanent first molars occlusal surface_____________?
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A. Mandibular molar has 1 major fossa, 2 minor fossa, 5 triangular ridges and 4 grooves

B. All of the above

C. Rhomboidal shape in maxillary molars and hexagonal shape in Mandibular molars

D. Maxillary molar has 2 major fossa, 2 minor fossa, 4 triangular ridges,1 oblique ridge and 5 grooves

173. Which of the following is not a structural element of the temporomandibular joint ?
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A. Joint cavities

B. Capsular ligament

C. Articular disc

D. Sigmoid notch

174. 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

175. 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

176. 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

177. 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

178. 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

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

B. 5

C. 6

D. 3

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

B. 5

C. 3

D. 4

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