Free Dentine and Pulp MCQs with Answers

• A. Circumpulpal dentin
• B. Mantle dentin
• C. Predentin
• D. Secondary dentin

Explanation: Mantle dentin is the outermost dentin layer immediately beneath the dentinoenamel junction.

• A. Dentinal tubules
• B. Inter tubular dentin
• C. Peritubular dentin
• D. Circum pulpal dentin

Explanation: Peritubular dentin is more highly mineralized than intertubular dentin because it forms a mineral-rich sheath around each dentinal tubule.

• A. Black in transmitted light and white in reflected light
• B. Coarse fibril bundles arranged at right angle to the dentinal surface
• C. Dentinal tubules
• D. White in transmitted light and dark in reflected light

Explanation: Dead tracts are tubules containing air after the odontoblast processes have degenerated, so they appear black in transmitted light and…

• A. Concave
• B. S0shaped
• C. Straight
• D. None of the above

Explanation: Dentinal tubules follow an S-shaped course, especially in the crown, although they are relatively straighter near the root and cervical…

• A. Enamel
• B. Dentin
• C. Pulp
• D. Cementum

Explanation: Pulp is soft, vascular connective tissue and does not normally undergo calcification, whereas enamel, dentin, and cementum are mineralized…

• A. Incremental lines of retzius
• B. Incremental lines of von Ebner
• C. None of the above
• D. Contour lines lines of owen

Explanation: Contour lines of Owen are accentuated incremental lines in dentin that reflect disturbances or changes during dentin formation.

• A. Odontoclasts
• B. Osteoblasts
• C. Osteoclasts
• D. Odontoblasts

Explanation: Odontoclasts are the tooth-resorbing cells, functionally comparable to osteoclasts but specialized for dental hard tissues.