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.Management Sciences
Category: Oral Histology
True about direction of enamel rods______________?
A. They originate at right angle to dentin surface
B. They are almost vertical near the incisal edge (or) cusp tip areas
C. In the cervical third of deciduous crowns they are almost horizontal in direction
D. In cervical region of permanent teeth, they deviate in apical direction
E. All of the above
Alveolar bone proper is also known as: or Which of the following is seen as lamina dura in an IOPA radiograph ?
A. Lamina lucida
B. Lamina densa
C. Lamina propria
D. Lamina dura
Which of the following is true_____________?
A. All the bones of upper face develop by intra membranous ossification
B. Incus and malleus develops from mecketls cartilage
C. The third auditory ossicle or stapes develops from 2nd branchial arch
D. All of the above
The attached apparatus of tooth is composed of______________?
A. Gingiva, cementum and alveolar bone
B. Gingiva and cementum
C. Cementum and periodontal ligament
D. Peridontal ligament the cementum and the alveolar bone
The deciduous teeth can be differentiated from permanent teeth by_____________?
A. Enamel prismatic arrangement
B. Dentinal tubule arrangement
C. Primary and secondary dentin
D. Mineral content
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 2nd most prominent cells in pulp are______________?
A. Fibroblasts
B. defense cells
C. Odontoblasts
D. Histocytes or resting wandering cell
Atypical or osteodentin is formed due to disturbance during____________?
A. Morphodifferentiation
B. Histodifferentiation
C. Apposition
D. Initiation
Shape of crown and the size of the roots is determined by______________?
A. Pulp
B. Dentin
C. Enamel
D. Cementum
Collagen biosynthesis occurs inside the______________?
A. Chondroblasts
B. Odontoblasts
C. Osteoblasts
D. Fibroblasts
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