oral histology MCQs – Page 6

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

oral histology Mcqs
101. Development of supporting tissues of the tooth is initiated by____________?
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A. Cells of odontogenic layer

B. Cells of dental follicle

C. Cells of the gingiva

D. Cementoblasts

102. Excess deposition of calcium in the dentinal tubules is referred to as______________?
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A. Interglobular dentin

B. Mantal dentin

C. Sclerotic dentin

D. Intertubular dentin

103. The microhardness of dentin is about____________?
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A. 1/4 that of enamel

B. 1/7 that of enamel

C. 1/2 that of enamel

D. 1/5 that of enamel

104. Dark bonds that are present in enamel rods at intervals of 4 ?ms are______________?
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A. Hunter-Schregar bands

B. Striae of Retzius

C. Neonantal bands

D. Cross striations
105. Which of the following tissues have no reparative capacity______________?
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A. Dentin

B. Cementum

C. Periodontal ligament

D. Enamel
106. Acellular cementum is typically found in_____________?
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A. Coronal half of root

B. Entire root

C. Apex of root

D. Apical half of root

107. If a childs teeth do not form, this would primarily effect the growth of the_____________?
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A. Mandible

B. Alveolar bone

C. Whole face

D. Basal bone

108. Inorganic content of enamel is about______________?
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A. 96%

B. 35%

C. 4%

D. 50%

109. Physically and chemically, the dentin is closely related to______________?
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A. Enamel

B. None of the above

C. Acellular cementum

D. Bone
110. Pain originate in the pulp due to_________?
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A. Krause bulb at the center of the pulp

B. Meisseners corpuscles at cell rich zone

C. free nerve ending at sub odontoblastic layer

D. free nerve ending in cell rich zone

111. The rest of malassez in the periodontal ligament are derived from_____________?
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A. Lamina propria

B. Vestibular lamina

C. Dental pulp

D. Odontogenic epithelium
112. Which of the following groups of fibres are not attached to alveolar bone ?
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A. Transseptal

B. Apical

C. Oblique

D. Horizontal

113. Moth eaten appearance of of enamel is seen in____________?
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A. Odontodysplasia

B. Amelogenisis stage

C. Mottled enamel

D. Desmolytic stage

114. narled enamel is seen in_____________?
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A. Cusp tips of tooth

B. Proximal surface of tooth

C. All of the above

D. Cervical region of tooth

115. The periodontal ligament_____________?
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A. Contains epithelial cells

B. Has a slow rate of turn over

C. Comprises primarily of type II collagen

D. Derives its blood supply primarily from the branches of vessels entering the pulp

116. Dentin formed through out the life is______________?
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A. Sclerotic dentin

B. All of the above

C. Secondary dentin

D. Reparative dentin

117. Following is derivative of dental lamina____________?
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A. Rests of serrae

B. Epithelial rests of Malassez

C. All of the above

D. Enamel pearls

118. Dentinal tubules are calcified in_______________?
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A. Sclerotic dentin

B. Secondary dentin

C. Primary dentin

D. Interglobular dentin

119. In mammals independent and tough suspension for teeth is provided by____________?
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A. Cementum

B. Periodontal membrane

C. Alveolar sockets

D. Gubernacular cords

120. Ectodermal cells in tooth bud are responsible for_______________?
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A. Determination of shape of crown and root

B. Formation of pulp

C. Formation of cementum

D. Formation of periodontal ligament