<prompt> Which of the following is responsible for dental caries?S.MutansS.MitisS.SanguisAll the above  <response>: Dental caries are believed to be caused by viridians streptococci which also includes S. Salivarius along with the ones given above. Pathogenesis of dental carries: Changes in chemical composition of dental plaque fluid following sucrose exposure reflects a combination of interrelated factors and processes that include diffusion, bacterial metabolism, buffering and the influences of saliva. 4 Types of Caries: Pit Fissure Caries : Caused by S mutans, S sanguis, Other streptococci, Lactobacillus sp, Actinomyces sp Smooth surface Caries: Caused by S mutans, S salivarius Root surface: Caused by A viscosus, A naeslundi, Othr filamentous rods, S mutans, S sanguis, S salivarius Deep dentinal caries: Caused by Lactobacillus sp, A naeslundi, A viscosus, Othr filamentous rods, S mutans 