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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Resorption of dental tissue is caused by_____________?
A Osteoclasts
B Osteoblasts
C Odontoclasts
D Odontoblasts
Correct Answer: Odontoclasts
Tooth eruption is due to______________?
A Osteoclastic activity
B Proliferation of cells at crypt
C Exforliation of primary tooth
D Eruptive force
Correct Answer: Eruptive force
In resorption of roots of the primary teeth, the dental pulp_____________?
A Plays a passive role
B Becomes a fibrotic non-vital mass
C Initiates resorption from the inner surface of roots
D Aids in formation of secondary dentin slowing down resorption
Correct Answer: Plays a passive role
Which of the following statement is correct_________________?
A In cross sections enamel rods appear hexagonal and resembles fish scales
B The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically
C The apatite crystals are parallel to bodies and deviate 65° from the tails
D All of the above
Correct Answer: All of the above
Length of enamel rods is_____________?
A Greater than the thickness of enamel
B Less than the thickness of enamel
C Equal to the thickness of enimal
D None of the above
Correct Answer: Greater than the thickness of enamel
Specific gravity of enamel is_____________?
A 2.8
B 3.8
C 4.8
D 2.3
Correct Answer: 2.8
The type of fibrous element in enamel is_____________?
A Tono filament
B Keratin like fibre
C Collagen fibre
D Vimentin filament
Correct Answer: Keratin like fibre
Which of the following tissues have no reparative capacity______________?
A Enamel
B Dentin
C Cementum
D Periodontal ligament
Correct Answer: Enamel
Which of the following structures is not of ectodermal origin_______________?
A Hunter schreger bands
B Enamel spindles
C Enamel tufts
D Enamel lamellae
Correct Answer: Enamel spindles
Neonatal lines are found in all of the following except____________?
A Enamel of primary incisors
B Enamel of permanent canines
C Enamel and dentin of permanent first molars
D Dentin of permanent mandibular incisors
Correct Answer: Enamel of permanent canines
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