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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

Dentinogenesis by odontoblasts first begins at_____________?
A Pulpal end
B Cusp tip
C Tooth bud stage
D Cervical area
Correct Answer: Cusp tip
The zone of dentin most recently formed and uncalcified is known as____________?
A Mantle dentin
B Circumpulpal dentin
C Predentin
D Secondary dentin
Correct Answer: Predentin
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
Correct Answer: Elicit only pain as a response
Mirgration of odontoblasts into dentinal tubules occurs during ________________?
A Cavity preparation
B Dehydration
C Water irrigation
D None of the above
Correct Answer: Cavity preparation
The dentin adjacent to the dentinoenamel junction is called the______________?
A Mantle dentin
B Circumpulpal dentin
C Predentin
D Secondary dentin
Correct Answer: Mantle dentin
Which of the following dentinal layers is more mineralized______________?
A Peritubular dentin
B Inter tubular dentin
C Dentinal tubules
D Circum pulpal dentin
Correct Answer: Peritubular dentin
Dead tracts in ground section appears as_____________?
A Dentinal tubules
B Coarse fibril bundles arranged at right angle to the dentinal surface
C Black in transmitted light and white in reflected light
D White in transmitted light and dark in reflected light
Correct Answer: Black in transmitted light and white in reflected light
Dentinal tubules are______________?
A Concave
B Straight
C S0shaped
D None of the above
Correct Answer: S0shaped
Dental lamina is active up to_______________?
A 1 year
B 2 years
C 3 years
D 4 years
Correct Answer: 4 years
Ectodermal cells in tooth bud are responsible for_______________?
A Determination of shape of crown and root
B Formation of periodontal ligament
C Formation of cementum
D Formation of pulp
Correct Answer: Determination of shape of crown and root
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