oral histology MCQs – Page 15

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

oral histology Mcqs
281. The component of future T.M.J shows development at _____________?
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A. 16 weeks

B. 18 weeks

C. 10 weeks

D. 6 weeks

282. Which of the following is not an ecto-mesenchymal derivative ?
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A. Enamel

B. Pulp

C. Cementum

D. Dentin

283. Sharpeys fibres are derived from_____________?
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A. Alveolar bone

B. Dental follicle

C. Epithelial rests of malassez

D. Hertwigs root sheath

284. Centre of the disc in TMJ is_____________?
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A. Avascular & deviod of nervous tissue

B. Avascular

C. None of the above

D. Devoid of nervous tissue

285. The disturbances occurred during Calcification stage of tooth development is seen in_____________?
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A. Peg laterals

B. Microdontia

C. Supernumerary tooth

D. Interglobular dentin
286. Which of the following is correct about enamel crystals ?
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A. Their diameter is about 5 microns in size

B. Roughly texagonal in shape

C. Same as dentin crystals

D. Contains organic portion in the center

287. Bundle bone is part of____________?
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A. Longbones

B. Alveolar bone

C. Periodontal ligament

D. Cementum

288. Aging process affects pulp tissue by_____________?
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A. Increase cellular component at the expenses of fibre component

B. Decreasing the size and shape of pulp tissue and cellular component

C. Increases vascularity of the pulp

D. Decrease the calcific component of the pulp

289. Approximately how many enamel rods will be present in a maxillary molar ?
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A. 7 million

B. 5 million

C. 9 million

D. 12 million
290. Intermediate plexus is seen in the____________?
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A. Cementum

B. Dentin

C. Pulp

D. PDL
291. Remnants of the Hertwigs root sheath are found in____________?
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A. Cementum

B. Periodontal ligament

C. Alveolar bone

D. Gingiva

292. Which of the following is a rare occurrence______________?
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A. Enamel meet cementum at a point

B. Enamel overlaps cementum

C. Cementum overlaps enamel

D. Both never meet

293. Intermediate cementum is____________?
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A. Highly defined cellular zone near cemento dentinal junction (CDJ)

B. Highly defined fibrillar zone near CDJ

C. Poorly defined zone near cemento-dentinal junction

D. Both a and B

294. Vitality of pulp depends on________________?
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A. Blood supply

B. Nerve supply

C. Lymphatic supply

D. All of the above

295. Anchoring fibrills are composed of_____________?
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A. Type IV collagen

B. Type V and VII collagen

C. Type I and III collagen

D. Type IV and III Collagen

296. The dental pulp contains nerve endings/receptors for____________?
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A. Pain

B. Proprioception

C. Temperature

D. Pressure

297. Membrana performative is seen in_________________?
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A. Cap stage

B. Advanced bell stage

C. Bud stage

D. Bell stage
298. At the CEJ cementum overlaps enamel about____________?
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A. 70 to 75%

B. 60 to 65%

C. 65 to 70%

D. 55 to 60%

299. Hardness of fully mineralized cementum is_____________?
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A. Equal dentin

B. None of the above

C. More than dentin

D. Less than dentin
300. The bud, cap and bell stage of the developing tooth are based, on growth of the______________?
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A. Enamel organ

B. Dental papilla

C. Dental sac

D. Stellate reticulum