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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

Ammonia causes______________?
A Increase in plaque formation
B Increase in calculus formation
C Decrease in plaque formation
D Causes precipitation of salivary proteins
Correct Answer: Decrease in plaque formation
Pioneer bacteria in dental caries are in_____________?
A Enamel
B Dentin
C Pulp
D Cementum
Correct Answer: Dentin
Chemico-parasitic theory of dental caries is proposed by______________?
A Miller
B G.V black
C Gottlieb
D Schwartz
Correct Answer: Miller
In a caries-free individual the saliva has_____________?
A low buffering capacity of acids
B Medium buffering capacity for acids
C High buffering capacity for acids
D Independent of buffering capacity for acids
Correct Answer: High buffering capacity for acids
The lateral spread of dental caries is facilitated mostly by the_______________?
A Enamel spindles
B Dentinoenamel junction
C Enamel lamellae
D Striae of Retzius
Correct Answer: Dentinoenamel junction
Caries, all are true except______________?
A Lactobacillus is main acusative organism in plaque
B Smooth surface caries occur due to streptococcus mutans
C Pit and Fissure caries can be prevented by using pit and tissue sealants
D Fluorides help in reducing caries incidence
Correct Answer: Lactobacillus is main acusative organism in plaque
Intitation of dental caries depends upon_______________?
A Formation of large amount of acid
B Availability of carbohydrate food
C Viscosity of saliva
D Localization of acid over tooth surface
Correct Answer: Localization of acid over tooth surface
Miller put forth the acidogenic theory of dental caries in the year______________?
A 1890
B 1920
C 1924
D 1980
Correct Answer: 1890
Turbid dentin in carious tooth is all EXCEPT_____________?
A Zone of bacterial invasion
B Zone which can not be remineralized
C Zone in which collagen is irreversibly denatured
D Zone that need not be removed before restoration
Correct Answer: Zone that need not be removed before restoration
Least cariogenic among these______________?
A Raw starch
B Cooked starch
C Sucrose
D Fructose
Correct Answer: Raw starch
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