What are the Predominant Micro Organisms in various parts of the Oral Cavity

Oral cavity supposedly contains the maximum number of micro organisms compared to any part of the Human Body. There are both Harmful and Beneficial Micro organisms in the Oral cavity, Aerobic (or) Anaerobic, Gram (+ve) or Gram (-ve) etc. Solet us look at the list of micro organisms seen in the oral cavity based on their location

These bacteria multiply and may lead to health condition in case of poor oral hygiene, so keeping good oral hygiene is very important to make sure that there is no spread of any disease because of the Bacteria in oral cavity.

Micro organisms predominantly found in various parts of Oral cavity

Here are the Predominant micro organisms present in Oral Mucosa, Tongue, Teeth and Gingival Crevice. This is not a list of harmful or harmless bacteria but a list to show the maximum concentration in respective area of the oral cavity.

Oral Mucosa: Here there micro organisms which are predominant in Oral Mucous Membrane

  • Streptococcus Mitis
  • Streptococcus Sanguis
  • Streptococcus Salivarius

Tongue: Here are the micro organisms predominant on tongue  

  • Streptococcus Salivarius
  • Streptococcus Mutans
  • Streptococcus Sanguis

Teeth (Non-Carious): The Micro organisms predominant on (Non-carious) Tooth surface  

  • Streptococcus Sanguis

Teeth (Carious): The Micro organisms predominant on Carious Teeth (Enamel, Dentin and Root)

  • Enamel Caries: Streptococcus Mutans
  • Dentin Caries: Streptococcus Mutans
  • Root Caries: Lactobacillus Species, Actinomyces Species

Gingival Crevice: The micro organisms predominant in the Gingival Crevice

  • Fusobacterium Species
  • Spirochaeta Species
  • Actinomyces Species
  • Veillonella Species

Oral cavity has a very complex environment filled with Protective Bacteria and Harmful Bacteria which interact and keep the Oral cavity healthy, but in case of a disease the harmful bacteria surpass the Helpful bacteria and lead to periodontal diseases.

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