Journal of AdvancedMedical and Dental Sciences Research

Oral microbiology is the study of the microorganisms of the oral cavity and the interactions between the oral microorganisms with each other and with the host &refers to the population of microorganisms that inhabit skin and mucous membranes of normal healthy oral cavity and GIT. The mouth is inhabited by an indigenous "normal" micro flora that is composed of over 500 species—the majority still uncultivable. Certain microbial types are constantly found in the specific oral areas. These microbial types are referred to collectively as the normal, indigenous, or resident floras and constitute the oral ecosystems.
Keyword: Microorganisms, Ecosystem, Environment