MCQs of Oral Pathology & Medicine – Dental Caries

Lactobacilli are numerous in caious lesions because they:

Starch is considered to be less cariogenic than monosaccharides and disaccharides because it:

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

Organism involved in smooth surface caries is:
1 Streptococcus mutans
2 Actinomyces viscosus
3 Lactobacillus
4 Campylobacter

In a patient with reduced salivary flow the carious incidence is:

Which of the following is cariogenic?

The number of dentinal zones in dentinal caries is:

Dental caries is associated with:

Widely accepted theory of dental caries

The corrct order of microscopic zones of dentinal caries starting from the D.E junction is:

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

The dietary carbohydrate most likely involved in etiology of dental caries in man is:

Bacteria responsible for initiation of caries is:

What is the PH at which initiation of caries begin?

Oral foci of miller’s are seen in:

In the earliest stages of carious lesion. There is loss of:

Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is:

Least cariogenic among these

Which tooth in the permanent dentition is the most susceptible to dental caries?

Turbid dentin in carious tooth is all EXCEPT

Streptococcus mutans is considered to be principle etiologic agent of caries because it produces organic acids and it:

Miller put forth the acidogenic theory of dental caries in the year

For a bacterium to be seriously considered in the etiology of dental caries, it must:

Intitation of dental caries depends upon:

Caries, all are true except:

The enzyme glucosyl transferase secreted by Streptococcus mutans sythesizes glucans from

The lateral spread of dental caries is facilitated mostly by the:

The prbable reasons for a high incidence of dental caries in the teenage population relates most directly to:

In a caries-free individual the saliva has:

Early invading bacteria in carious lesions are called:

Chemico-parasitic theory of dental caries is proposed by:

Which of the following organisms is found in deep carious lesions rather than in incipient lesions?

Pioneer bacteria in dental caries are in:

The most pronounced effect on the oral microflora of a reduction in rate of salivary flow is a:

Ammonia causes

Cavity formation in a tooth, due to dental caries is due to:

Animals maintained in germ free environmental did not develop caries even when fed on a high carbohydrate diet is given by:

Which of the following factors in the stephan’s curve is related to the caries incidence and sugar intake:

Initiation of caries by streptococcus mutans is by the production of:

The attachment of the Actinomyces species to the tooth surface is facilitated by: