Oral Histology MCQs
Oral Histology MCQs are tailored for dentistry students seeking mastery of tooth development and oral tissue structure. These questions focus on enamel formation, dentin-pulp complex, cementum, alveolar bone, and salivary glands. They're excellent for preparation of BDS, MDCAT, and related tests.
Q: The most mineralized part of dentin is the
A) Intertubular dentin
B) Predentin
C) Peritubular dentin
D) Mantle dentin
✅ Correct Answer: C
Explanation: Peritubular dentin, lining the dentinal tubules, contains more hydroxyapatite than other dentin regions.
Q: The function of the enamel knot is to
A) Attach gingiva
B) Guide crown cusp pattern
C) Deposit collagen
D) Form root
✅ Correct Answer: B
Explanation: The enamel knot is a signaling center controlling cusp formation and morphogenesis during crown development.
Q: Enamel spindles result from
A) Irregular collagen fibers
B) Trapped fibroblasts
C) Degenerating ameloblasts
D) Entrapped odontoblastic processes
✅ Correct Answer: D
Explanation: Enamel spindles are extensions of odontoblastic processes that cross the dentinoenamel junction into enamel.
Q: The cervical loop is essential for the development of
A) Enamel rods
B) Periodontal fibers
C) Dental lamina
D) Hertwig’s epithelial root sheath
✅ Correct Answer: D
Explanation: The cervical loop contributes to Hertwig’s epithelial root sheath, which shapes the roots of the tooth.
Q: Odontoblasts leave behind
A) Cementicles
B) Interglobular spaces
C) Enamel tufts
D) Dentinal tubules
✅ Correct Answer: D
Explanation: As odontoblasts retreat during dentinogenesis, they leave behind dentinal tubules housing their processes.