A. Exist regularly in the dental plaque
B. Produce extracellular amylopectins
C. Be lethal for gnotobiotic animals
D. Produce intracellular dextrans
Related Mcqs:
- The dietary carbohydrate most likely involved in etiology of dental caries in man is____________?
A. Glucose
B. Sucrose
C. Dextran
D. Polysaccharide - 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 - The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?
A. Conjugation
B. Rarefaction
C. Transduction
D. Transformation - 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 - Which tooth in the permanent dentition is the most susceptible to dental caries ?
A. Maxillary 1st premolar
B. Maxillary 2nd molar
C. Mandibular 1st molar
D. Mandibular 2nd molar - Cavity formation in a tooth, due to dental caries is due to______________?
A. Destructive potential of streptococcus mutans
B. Destructive potential of lactobacillus acidophilus
C. Lateral spread of caries along DE junction and weakening of the outer covering enamel
D. Mastectomy force and unrelated to the extent of carious process - Miller put forth the acidogenic theory of dental caries in the year______________?
A. 1890
B. 1920
C. 1924
D. 1980 - The lateral spread of dental caries is facilitated mostly by the_______________?
A. Enamel spindles
B. Dentinoenamel junction
C. Enamel lamellae
D. Striae of Retzius - Chemico-parasitic theory of dental caries is proposed by______________?
A. Miller
B. G.V black
C. Gottlieb
D. Schwartz - Pioneer bacteria in dental caries are in_____________?
A. Enamel
B. Dentin
C. Pulp
D. Cementum
