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
Related Mcqs:
- 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 - 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 - The prbable reasons for a high incidence of dental caries in the teenage population relates most directly to______________?
A. Rapid growth
B. Frequency of sucrose intake
C. Negligence in visiting the dentist
D. Carelessness in oral hygiene habits - An asymptomatic tooth has deep has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth: this mass is most likely to be:____________?
A. Cementoma
B. Condensing Osteitis
C. Chronic apical periodontitis
D. Acute apical periodontitis - 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 - A condition of the mouth with increase the caries activity in the oral cavity is_________________?
A. Xerostomia
B. Malignancy
C. Hairy tongue
D. Watery saliva - Difference between epithelium of oral cavity and cavity lining of cyst is ___________-?
A. Stratum corneum
B. Stratum lucidum
C. Stratum germinativum
D. Stratum spinosum - For a bacterium to be seriously considered in the etiology of dental caries, it must______________?
A. Exist regularly in the dental plaque
B. Produce extracellular amylopectins
C. Be lethal for gnotobiotic animals
D. Produce intracellular dextrans - Dental caries is associated with_____________?
A. Streptococcus agalactiae
B. Streptococcus mutans
C. Streptococcus bovis
D. Streptococcus anginosus - 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
