Abstract
In this study, indoor pollution of dental-oral surgery clinic was researched by counting airborne dust and bacteria. The resulting counts were high. Dust and bacterial colony increased as treatment time passed and many patients moved. Especially, 0.5μm dust count recorded over 105 and also over 106 (/cf) in many cases. As compared with NASA's standard of bio-clean room, this environment was not proper for usual surgery. So it is washed for contamination-control.
