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: A cellular layer found in the pulp beneath the odontoblast layer is called the
A) Subodontoblastic zone
B) Cell-free zone
C) Cell-rich zone
D) Fibrous zone
✅ Correct Answer: C
Explanation: The cell-rich zone contains numerous fibroblasts and undifferentiated mesenchymal cells beneath the odontoblast layer.
Q: Tomes' granular layer is found in the
A) Root dentin
B) Inner enamel
C) Cementum
D) Pulp core
✅ Correct Answer: A
Explanation: Tomes’ granular layer is a hypomineralized zone located in the peripheral dentin near the root.
Q: Gnarled enamel is found in the
A) Cervical region
B) Cuspal areas
C) Root apex
D) Enamel surface
✅ Correct Answer: B
Explanation: Gnarled enamel is a complex arrangement of enamel rods seen under cusp tips to resist fracture.
Q: The main inorganic component of enamel is
A) Collagen
B) Calcium carbonate
C) Fluoride
D) Calcium phosphate
✅ Correct Answer: D
Explanation: Hydroxyapatite, a form of calcium phosphate, forms the majority of enamel's mineral content.
Q: The enamel organ does not contribute to the formation of
A) Crown shape
B) Dentin
C) Enamel
D) Reduced enamel epithelium
✅ Correct Answer: B
Explanation: Dentin is formed by odontoblasts derived from the dental papilla, not the enamel organ.