211. Which of the following is least mineralized ?
A. Cementoid
B. Incremental line
C. Cellular cementum
D. Acellular cementum
✅ The correct answer is option A. Cementoid.
Oral Histology
212. In adult teeth, the type of dentin present underlying dentin-enamel junction is_______________?
A. Predentin
B. Mantle dentin
C. Interglobular dentin
D. Tertiary dentin
✅ The correct answer is option B. Mantle dentin.
213. The formative cells of which of the following dental tissues disappear once tissue is formed___________?
A. Enamel
B. Dentin
C. Periodontal ligament
D. Cementum
✅ The correct answer is option A. Enamel.
214. The main bulk of dentin is formed by______________?
A. Peritubular dentin
B. Mantle dentin
C. Inter tubular dentin
D. Predentin
✅ The correct answer is option C. Inter tubular dentin.
215. The neutralization of saliva is due to______________?
A. Mucin
B. Ammonia
C. Amino acids
D. Bicarbonates
✅ The correct answer is option D. Bicarbonates.
216. Dentinal tubules are______________?
A. Concave
B. Straight
C. S0shaped
D. None of the above
✅ The correct answer is option C. S0shaped.
217. Periodontal fibres joining cemental surface of one tooth, to cemental surface of adjacent tooth are called____________?
A. Gingivodental
B. Cemental fibres
C. Horizontal fibres
D. Transseptal fibres
✅ The correct answer is option D. Transseptal fibres.
218. Which of the following structures is not found in a living pulp ?
A. Collagen fibres
B. Haversian fibres
C. Non-myelinated nerve fibres
D. Reticulum
✅ The correct answer is option B. Haversian fibres.
219. Hammock ligament is present_______________?
A. Between temporal and sphenoid bone
B. Between hamular notch and mandible
C. In apical area of a tooth
D. As a part of deep cervical fascia
✅ The correct answer is option D. As a part of deep cervical fascia.
220. The relationship between the pulpal and periodontal tissue complex begins during dental development at_____________?
A. Adolescent stage
B. 5-10 years
C. Embryonic stage
D. None of the above
✅ The correct answer is option C. Embryonic stage.