Are there good bacteria that live in your mouth? Does using mouthwash or anything meant to kill mouth ‘germs’ kill that good bacteria?

Answer 1

Yes, our mouth is like a rainforest having both harmful and good bacteria. Normally there is balance between both bacteria. But when this balance shifts to increase of more pathogenic bacteria then disease begins.

Mouthwashes kills pathogenic microorganisms but kills some good bacteria also. Mouthwash do not distinguish between good bacteria and bad bacteria. Studies are against indiscriminate use of mouthwash. So they should be used properly and judiously.