oral histology MCQs – Page 11

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

oral histology Mcqs

201. The development of pulp begins__________?
0

A. 6th week of IU

B. 18th week of IU

C. 8th week of IU

D. 10th week of IU

202. Dentinal tubules are______________?
0

A. None of the above

B. Straight

C. Concave

D. S0shaped

203. Which of the following is correct?
0

A. Sclerotic transparent dentin appears transparent or light in transmitted light and dark in reflected light

B. All of the above

C. Reparative dentin is characterized by having fewer and more twisted tubules than normal dentin and may include odontoblasts

D. Dead tracts appear black in transmitted and white in reflected ligth

204. Following is not an external manifestation of enamel________________?
0

A. Enamel tufts

B. Incremental lines of enamel

C. Enamel lamella

D. Enamel cuticle

205. The striking difference between enamel and other mineralized tissues is______________?
0

A. Most of organic component is lost during mineralization

B. Presence of incremental lines

C. Enamel has high reparative capacity

D. Presence of high percentage of organic matrix

206. Cementicles are found in the_____________?
0

A. Cementum

B. Alveolar bone

C. Gingiva

D. Periodontal ligament

207. Formation of dentin by odontoblasts begins in_______________?
0

A. Organizing stage

B. Desmolytic stage

C. Morphogenic stage

D. Formative stage

208. The average diameter of coronal dentinal tubules near the pulp is____________?
0

A. 7 microns

B. 2-3 microns

C. 0.2-0.3 microns

D. 0.2-0.5 microns

209. Which of the areas of the tooth is most sensitive during cavity preparation ?
0

A. Enamel (anterior teeth)

B. Dentin

C. Dentinoenamel junction

D. Enamel (Posterior teeth)

210. Pulp tissue contains all except____________?
0

A. Capillary

B. Ameloblasts

C. Osteoblasts

D. Fibroblasts

211. At the cemento enamel junction, which of the following occurs_____________?
0

A. Cementum does not meet enamel

B. Cementum overlaps enamel

C. All of the above

D. Cementum meets enamel

212. First appearance of tooth formation occurs in____________?
0

A. 9th week IU

B. 4th week IU

C. 2nd week IU

D. 6th week IU

213. The zone of dentin most recently formed and uncalcified is known as____________?
0

A. Circumpulpal dentin

B. Secondary dentin

C. Predentin

D. Mantle dentin

214. The type of bone present in the labial area of anterior teeth is_______________?
0

A. Exophytic

B. Osteophytics

C. Cancellous

D. Cortical

215. S shape of dentinal tubules is due to______________?
0

A. Incremental deposition

B. Peritubular dentin

C. Crowding of odontoblasts

D. Due to excess amount of organic component

216. Which of the following is correct?
0

A. All of the above

B. Each ameloblast contributes to 4 different rods

C. Each rod is formed by 4 ameloblasts

D. Head of the rod is formed by one ameloblasts, and tail is formed by three other ameloblasts

217. Regarding teeth which statement is wrong ?
0

A. Enamel is harder than dentine

B. Odontoblast produce dentin

C. Enamel has no cells

D. Ameloblast secrete enamel and dentine

218. Which of the following dentinal layers is more mineralized______________?
0

A. Inter tubular dentin

B. Peritubular dentin

C. Dentinal tubules

D. Circum pulpal dentin

219. The total volumes of all permanent pulp organ______________?
0

A. 0.38 cc

B. 3.8 cc

C. 0.02 cc

D. 0.58 cc

220. The pain transmission through dentin is______________?
0

A. Fluid or hydrodynamic theory

B. All of the above

C. Direct neural stimulation

D. Transduction theory

Previous Next

Showing 201 to 220 of 402 mcqs