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 prominent feature in the enamel of deciduous teeth is
A) Gnarled enamel
B) Perikymata
C) Neonatal line
D) Cross striations
✅ Correct Answer: C
Explanation: The neonatal line is an accentuated incremental line that marks birth, seen prominently in deciduous teeth.
Q: Resting lines in dentin are formed due to
A) Interrupted mineralization
B) Pulpal degeneration
C) Vascular rupture
D) Protein degradation
✅ Correct Answer: A
Explanation: Resting lines represent pauses in dentin deposition and appear as incremental lines.
Q: The innermost layer of enamel organ during bell stage is the
A) Outer enamel epithelium
B) Stellate reticulum
C) Inner enamel epithelium
D) Stratum intermedium
✅ Correct Answer: C
Explanation: The inner enamel epithelium differentiates into ameloblasts, which secrete enamel.
Q: Apical foramen allows passage of
A) Cementoblasts
B) Sharpey’s fibers
C) Blood vessels and nerves
D) Enamel-forming cells
✅ Correct Answer: C
Explanation: The apical foramen serves as the main conduit for neurovascular supply to the pulp.
Q: The first sign of enamel formation appears at the
A) Root apex
B) Enamel surface
C) DEJ
D) CEJ
✅ Correct Answer: C
Explanation: Enamel deposition begins at the dentinoenamel junction and progresses outward.
Q: Cementicles are found within the
A) Enamel
B) Periodontal ligament
C) Dentin
D) Pulp
✅ Correct Answer: B
Explanation: Cementicles are small calcified bodies found within the periodontal ligament space.
Q: The pulp zone rich in capillaries and nerves is the
A) Cell-free zone
B) Odontoblastic layer
C) Plexus of Raschkow
D) Central pulp zone
✅ Correct Answer: C
Explanation: The Plexus of Raschkow is a network of nerves located beneath the odontoblasts in the pulp.
Q: The shape of the tooth crown is determined during
A) Bell stage
B) Bud stage
C) Cap stage
D) Root formation
✅ Correct Answer: A
Explanation: During the bell stage, histodifferentiation and morphodifferentiation define the shape and cell types.
Q: Pulp stones are most commonly found in
A) Cementum
B) Enamel
C) Aged pulp
D) Newly erupted teeth
✅ Correct Answer: C
Explanation: Pulp stones are calcified masses often found in older individuals’ dental pulp.
Q: The area where Hertwig's epithelial root sheath bends is called
A) Root papilla
B) Cervical loop
C) Epithelial diaphragm
D) Apical loop
✅ Correct Answer: C
Explanation: The epithelial diaphragm guides the root length and number by bending at the growing root tip.