oral anatomy Mcqs
101. Maxillary primary cuspid enamel completion takes place at______________?
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A. 6 months in utero

B. 6 months after birth

C. 9 months after birth

D. 9 months in utero

102. The side towards which mandible moves is called the_____________?
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A. Non- working side

B. Working side

C. Balancing side

D. Tooth contact side

103. Which of the following moment are performed by a non- working condyle ?
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A. Down wards forwards and lateral

B. Straightward

C. Down wards forwards and medial

D. Down wards Back wards and medial

105. Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?
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A. Mandibular first molar

B. Maxillary first molar

C. Maxillary second molar

D. Mandibular second molar

107. In an ideal occlustion buccal cusps of maxillary teeth, occlude with______________?
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A. Occlusal pits and fissures of mandibular teeth

B. Lingual cusps of mandibular teeth

C. Grooves and embrasures

D. Fossa and rdges

110. In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_____________?
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A. Facial embrasure of canine and premolar

B. Mesial ridge on the facial cusp of mandibular first premolar

C. Distal ridge of the cusp of mandibular canine

D. incisal embrasure of canine and premolar

111. Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?
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A. Inferior and lingual

B. Superior and lingual

C. Inferior and facial

D. Superior and facial

112. The first macroscopic indication of morphologic development of primary incisors approximately at____________?
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A. 14 weeks in utero

B. 6 weeks in utero

C. 16 weeks in utero

D. 11 weeks in utero
114. Which of the following movement (s) is / are involved in the opening of the mouth?
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A. Hinge followed by translation

B. Translation followed by hinge

C. Only translation

D. Only hinge ( rotation )

115. The widest incisal embrasure is normally found between which of the following permanent maxillary teeth _____________?
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A. Central incisors

B. First and 2nd premolar

C. Lateral incisor and canine

D. Central and lateral incisors

117. Which of the following is the largest root_____________?
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A. The lingual root of a maxillary second molar

B. The root of a maxillary canine

C. The root of a mandibular canine

D. The lingual root of a maxillary first molar

118. Which of the following features of a permanent maxillary lateral incisor aids in distinguishing it from a mandibular lateral incisor ?
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A. More pronounced lingual fossa

B. Flattened root

C. Thinner incisal ridge

D. Sharper proximal incisal angles

119. Which of the following muscles moves the condyle and articular disc anterior and downwards on glenoid fossa______________?
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A. Lateral pterygoid

B. Temporalis posterior fibers

C. Medial pterygoid

D. Temporalies- anterior fibers

120. The mesial surface of the crown is almost parallel to long axis and the root of a______________?
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A. Maxillary 1st premolar

B. Maxillary canine

C. Mandibular canine

D. Mandibular 2nd premolar

122. The zygomatic bone does not articulate with________________?
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A. Maxillary bone

B. Nasal bone

C. Frontal bone

D. Temporal bone

123. Which teeth show less curvature on the crown above the cervical line than any other teeth_____________?
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A. Maxillary anterior

B. Mandibular canine

C. Mandibular anteriors

D. Maxillary canine

124. Longest tooth of the maxillary arch is_____________?
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A. First premolar

B. Decidous incisor

C. Permanent canine

D. Permanent incisor

125. In which of the following a nonfunctional cusp is present________________?
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A. Mandibular 2nd molar

B. Maxillary 2ndmolar

C. Maxillary 1st molar

D. Mandibular 1st molar

126. Tooth with most variable occlusal anatomy________________?
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A. Maxillary second premolar

B. Mandibular second premolar

C. Mandibular third molar

D. Maxillary third molar
127. The tooth that is commonly seen in an abnormal relation and contact with its adjacent teeth of the same arch is ________________?
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A. Mandibular first premolar

B. Maxillary central incisor

C. Maxillary lateral incisor

D. Mandibular lateral incisor

128. The biting forces at molar region during mastication is_______________?
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A. 50 to 75 pounds

B. 20 to 55 pounds

C. 90 to 200 pounds

D. 30 to 75 pounds

129. Which of the following are the unctions of contact areas______________?
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A. Stabilization of dental arches

B. All of the above

C. Protection of periodontium

D. Distribution of occlusal stresses

130. Cusp of carbelli is present on ________ surface of the permanent maxillary molar ?
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A. Palatal surface

B. Buccal surface

C. Mesial half of the palatal surface

D. Mesial surface

131. Tooth with smallest root is_______________?
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A. Mandibular central incisor

B. Maxillary lateral incisor

C. Mandibular lateral incisor

D. Maxillary central incisor

133. Mesiolingual grooves may be found on which of the following permanent teeth ______________?
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A. Mandibular second molars

B. Maxillary first molars

C. Maxillary canines

D. Mandibular first premolars
135. The premolar with the occlusal groove pattern that may simulate the letter Y is________________?
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A. Maxillary second

B. Maxillary first

C. Mandibular first

D. Mandibular second
137. Which of the following teeth have more than one occlusal form____________?
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A. Maxillary 2nd premolar

B. Mandibular 1stmolar

C. Maxillary 1st premolar

D. Maxillary 1st molar
139. Which of the following permanent teeth is usually bilaterally symmetric when viewed labially and incissaly ______________?
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A. Mandibular lateral incisor

B. Mandibular canine

C. Maxillary central incisor

D. Mandibular central incisor
141. Lateral movement of condyle is caused by_____________?
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A. Contralateral lateral pterygoid muscle

B. Both lateral and medial pterygoid muscle

C. Epsilateral lateal pterygoid muscle

D. Bilateral contraction of lateral pterygoid muscle

142. The lingual cusp of lower first premolar is compared to the development of____________?
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A. Distolingual cusp of molars

B. Cusp of carabelli

C. Cingulam of canine

D. Lingual cusp of second premolar

143. Divergence from contact area in proximal surfaces causes embrasures____________?
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A. Cervically

B. Lingually

C. Facially, lingually , cervically & occlusally

D. Facially

144. On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ?
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A. Mandibular lateral incisor

B. Maxillary central incisor

C. Mandibular central incisor

D. Mandibular second premolar

145. Contact areas of anterior teeth which are placed in centre of middle third ____________?
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A. Distal contacts of maxillary centrals and laterals

B. Mesial contacts of maxillary lateral and canine

C. Mesial contacts of maxillary first and second premolar

D. Distal contacts of maxillary laterals and canine
147. A pronounced developmental groove is usually present on the mesial marginal ridge of a permanent________________?
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A. Mandibular second premolar

B. Maxillary first premolar

C. Maxillary second molar

D. Mandibular third molar

148. Crown formation of all permanent teeth except third molars is completed between_____________?
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A. Birth to 8 years

B. Birth to 6 years

C. 6 years to 12 years

D. Birth to 12 years

149. Five cusps are present in___________________?
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A. Maxillary and Mandibular second molar

B. Maxillary and mandibular first molar

C. Maxillary first molar only

D. Mandibular first molar only

150. Steepest cusp is seen in_______________?
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A. Mandibular 2nd molar

B. Maxillary 1st premolar

C. Mandibular 1st molar

D. Maxillary 1st molar