Dental Caries
as described earlier is an irreversible microbial disease of the
calcified tissues of the teeth, characterized by de-mineralization of
the inorganic portion and destruction of the organic substance of the
tooth.
As you have seen in the Post about Dental Caries there are 4 Types of
Caries in particular based on the location where they are seen on the
tooth and the causative organisms for each type also differ which is
given below categorized under each type.
1) Pit & fissure Caries

  • S mutans
  • S sanguis
  • Other streptococci
  • Lactobacillus sp
  • Actinomyces sp
2) Smooth surface Caries

  • S mutans
  • S salivarius
3) Root surface

  • A viscosus
  • A naeslundi
  • Othr filamentous rods
  • S mutans
  • S sanguis
  • S salivarius
4) Deep dentinal caries

  • Lactobacillus sp
  • A naeslundi
  • A viscosus
  • Othr filamentous rods
  • S mutans