301. The periodontal ligament is approximately_____________?
A. 0.25 mm in thickness
B. 0.5 mm in thickness
C. 0.75 mm in thickness
D. mm in thickness
✅ The correct answer is option A. 0.25 mm in thickness.
Oral Histology
302. Bundle bone is part of____________?
A. Periodontal ligament
B. Alveolar bone
C. Cementum
D. Longbones
✅ The correct answer is option B. Alveolar bone.
303. Sharpey’s fibres are present in_______________?
A. Bone
B. Periosteum
C. Periodontal ligament
D. All of the above
✅ The correct answer is option A. Bone.
304. Following is derivative of dental lamina____________?
A. Epithelial rests of Malassez
B. Enamel pearls
C. Rests of serrae
D. All of the above
✅ The correct answer is option C. Rests of serrae.
305. The dentin receptors are unique because_____________?
A. They elicit pain to hot and cold
B. They elicit pain to touch and pressure
C. They elicit pain to chemicals
D. Elicit only pain as a response
✅ The correct answer is option D. Elicit only pain as a response.
306. Protein secreted by odontoblast_____________?
A. Chitin
B. Keratin
C. Collagen
D. Elastin
✅ The correct answer is option C. Collagen.
307. The mucous membrane of cheeks and lips_____________?
A. It attached to buccinator muscle in cheeks
B. It attached to orbicularis oris in lips
C. A & B are correct
D. None of the above
✅ The correct answer is option C. A & B are correct.
308. Frozen sections can be used for the demonstration of_____________?
A. Fat
B. Mucin
C. Cartilage
D. Iron
✅ The correct answer is option A. Fat.
309. The type of dentin that is formed prior to root completion______________?
A. Inter tubular dentin
B. Peritubular dentin
C. Circum pulpal dentin
D. Secondary dentin
✅ The correct answer is option C. Circum pulpal dentin.
310. Order of development of tooth germ is____________?
A. Bell-bud-cap
B. Cap-bell-bud
C. Bud-cap-bell
D. Bell-cap-bud
✅ The correct answer is option C. Bud-cap-bell.