oral histology MCQs – Page 12

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

oral histology Mcqs
221. Intermediate plexus is absent in which of the following principle fibres_____________?
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A. Horizontal

B. Transseptal

C. Oblique

D. Gingival
222. In cap stage, regulating factor for cusp shape formation is present in____________?
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A. Enamel Knot

B. Inner enamel epithelium

C. Dental papilla

D. Dental follicle

223. Which dental tissue doesnt contain nerves ?
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A. Cementum

B. Dentin

C. Pulp

D. Bone

224. Sclerotic dentin has following features_____________?
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A. Insensitive

B. Caries susceptible

C. Resistant to caries

D. Hypersensitive

225. Group of fibres, which resist the masticatory forces___________?
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A. Oblique

B. Dentogingival

C. Transeptal

D. Horizontal

226. Cementum is_____________?
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A. None of the above

B. Vascular

C. Avascular

D. Has blood supply initially only

227. Tomes firbres are____________?
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A. Originate from tomes granular layer

B. Type of sharpeys fibres

C. Odontoblastic processes in dental tubules

D. With out but not with in the dentin

228. All of the following cells of periodontal ligament are of mesenchymal origin except______________?
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A. Cell rests of malassez

B. Fibroblasts

C. Multi totipotent cells

D. Cementoblasts

229. The type of fibrous element in enamel is_____________?
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A. Keratin like fibre

B. Vimentin filament

C. Collagen fibre

D. Tono filament

230. A special feature of the periodontal ligament fibroblasts is______________?
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A. size of the cells

B. The number or organelles

C. Presence of actin fibres and shape change

D. Collagen fibre formation

231. Which of the following structures is not found in a living pulp ?
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A. Non-myelinated nerve fibres

B. Collagen fibres

C. Reticulum

D. Haversian fibres
232. All are true regarding the enamel spindles except____________?
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A. Terminate as rounded process

B. Produced by ameloblasts

C. Surrounded by inter prismatic enamel

D. Found in the region of cusps

233. The most abundant group of fibres in the PDL are_____________?
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A. Apical

B. Oblique

C. Horizontal

D. Trans-septal

234. Reestablishing the former outline of the root surface is_____________?
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A. Physiological repair

B. Hyperplasia

C. Anatomic repair

D. Functional repair

235. Histologically the dental pulp most closely resembles______________?
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A. Vascular tissue

B. Nerve tissue

C. Loose connective tissue

D. Granulation tissue

236. The main bulk of dentin is formed by______________?
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A. Predentin

B. Inter tubular dentin

C. Peritubular dentin

D. Mantle dentin

237. Pulp responds to all stimuli by pain because it has only_______________?
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A. Ruffini corpuscle

B. Pacinian corpuscle

C. Krause end bulbs

D. Free nerve endings
238. Trauma or excessive occlusal forces causes_____________?
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A. None of the above

B. Hyperplasia of cementum

C. Hypertrophy of cementum

D. Resorption of cementum
239. Which of the following is not the principle fibre group of the periodontal ligament___________?
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A. Transseplat

B. Alveolar crest

C. Horizontal

D. Oblique

240. The most accepted theory for dentin sensitivity is: or Which of the following is the most accepted theory of transmission of dental sensation_____________?
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A. Transduction theory

B. Direct neural stimulation

C. Hydrodynamic theory

D. Hydrostatic theory