Medical Science Mcqs 5254 MCQs [All-Courses]

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

Bacteria responsible for initiation of caries is _________________?

A Actinomyces

B Strep. mutans

C Lactobacillus

D Strep. viridans

Review Detailed Answer

Correct Answer: Strep. mutans

S. mutans is involved in dental caries initiation Other bacteria also involved is______________?

A S. Sarcinus

B S. macae

C S. sanguis

D S. salivarius

Review Detailed Answer

Correct Answer: S. sanguis

Widely accepted theory of dental caries_____________?

A Proteolytic theory

B Proteolytic chelation theory

C Acidogenic theory

D Autoimmune theory

Review Detailed Answer

Correct Answer: Acidogenic theory

The number of dentinal zones in dentinal caries is_____________?

A One

B Two

C Four

D Five

Review Detailed Answer

Correct Answer: Five

In a patient with reduced salivary flow the carious incidence is_______________?

A More than the patient with normal salivary flow

B less than the patient with normal salivary flow

C unaffected

D None of the above

Review Detailed Answer

Correct Answer: More than the patient with normal salivary flow

The extra – cellular polysaccharide sythesized by cariogenic streptococci in the presence of excess sucrose are best described as_______________?

A Mucopolysaccharide

B Dextran-like glucan

C Glycogen – like glucan

D Amylopectin

Review Detailed Answer

Correct Answer: Dextran-like glucan

Lactobacilli are numerous in caious lesions because they______________?

A Are the main causative agent

B Can produce insoluble extracellular polysaccharides

C Can attack to smooth enamel surfaces

D Are secondary invaders

Review Detailed Answer

Correct Answer: Are secondary invaders

Commonest site for carcinoma of tongue is_____________?

A Lateral margin

B Tip of tongue

C Posterio 1/3

D Ventral surface

Review Detailed Answer

Correct Answer: Lateral margin

The most reliable single histologic criterion for diagnosis of oral squamous cell carcinoma is____________?

A Invasion

B Degeneration

C Pleomorphism

D Encpsulation

Review Detailed Answer

Correct Answer: Invasion

The most common site for metastasis from carcinoma of cheek_____________?

A Brain

B Regional lymph nodes

C Lung

D Liver

Review Detailed Answer

Correct Answer: Regional lymph nodes

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Medical Science Mcqs 5254 MCQs [All-Courses]

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All Topics 5254

Bacteria responsible for initiation of caries is _________________?

S. mutans is involved in dental caries initiation Other bacteria also involved is______________?

Widely accepted theory of dental caries_____________?

The number of dentinal zones in dentinal caries is_____________?

In a patient with reduced salivary flow the carious incidence is_______________?

The extra – cellular polysaccharide sythesized by cariogenic streptococci in the presence of excess sucrose are best described as_______________?

Lactobacilli are numerous in caious lesions because they______________?

Commonest site for carcinoma of tongue is_____________?

The most reliable single histologic criterion for diagnosis of oral squamous cell carcinoma is____________?

The most common site for metastasis from carcinoma of cheek_____________?