A. S. Sarcinus
B. S. macae
C. S. sanguis
D. S. salivarius
Related Mcqs:
- Initiation of caries by streptococcus mutans is by the production of______________?
A. Dextranase and soluble dextran
B. Insoluble dextan and glucosyl transferase
C. soluble dextan and glucosyl transferase
D. None of the above - Bacteria responsible for initiation of caries is _________________?
A. Actinomyces
B. Strep. mutans
C. Lactobacillus
D. Strep. viridans - Progression of dental caries caries on pit and fissure occurs from:
A. Apex of the pit and fissure
B. Wide and of the pit and fissure
C. Lateral surface of the pit and fissure
D. Bottom of the pit and fissure - Pioneer bacteria in dental caries are in_____________?
A. Enamel
B. Dentin
C. Pulp
D. Cementum - Streptococcus mutans is considered to be principle etiologic agent of caries because it produces organic acids and it ________________?
A. Forms a gelatinous matrix
B. Metabolizes substrate from saliva
C. Derives energy from enamel constituents
D. Lives symbiolically with lactobacillus - The dietary carbohydrate most likely involved in etiology of dental caries in man is____________?
A. Glucose
B. Sucrose
C. Dextran
D. Polysaccharide - What is the PH at which initiation of caries begin ?
A. 4.3-4.5
B. 5.2-5.5
C. 4.9-5.1
D. 3.5-4.5 - Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?
A. Base to base
B. Apex to base
C. Apex to apex
D. None of the above - The main difference between dental stone and dental plaster is______________?
A. Chemical composition
B. Self life
C. Sharpe and size of particles
D. Solubility in water - The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?
A. 19
B. 20
C. 21
D. 26
