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: Incremental lines in enamel are also referred to as
A) Salter lines
B) Owen lines
C) Schreger lines
D) Retzius lines
✅ Correct Answer: D
Explanation: Striae of Retzius, or incremental lines, are found in enamel and represent rhythmic enamel deposition.
Q: The last layer of enamel formed is called
A) Tubular enamel
B) Nascent enamel
C) Interrod enamel
D) Aprismatic enamel
✅ Correct Answer: D
Explanation: Aprismatic enamel lacks the typical rod structure and is the outermost layer formed by ameloblasts before they degenerate.
Q: Perikymata are seen as
A) Cementum resorption areas
B) Dentin tubule openings
C) Sites of nerve entry
D) Horizontal ridges on enamel surface
✅ Correct Answer: D
Explanation: Perikymata are surface manifestations of striae of Retzius and appear as fine lines on the enamel surface.
Q: The innermost layer of the enamel organ is formed by
A) Ameloblasts
B) Inner enamel epithelium
C) Stellate reticulum
D) Outer enamel epithelium
✅ Correct Answer: B
Explanation: The inner enamel epithelium differentiates into ameloblasts responsible for enamel formation.
Q: The formative phase of amelogenesis involves
A) Enamel maturation
B) Enamel resorption
C) Odontoblast activation
D) Enamel prism formation
✅ Correct Answer: D
Explanation: During the formative stage, ameloblasts produce the enamel matrix, which later mineralizes.