1. The results of the proposed research may lead to a revolution among dental professionals, as well as at home care. To date, the only way for an individual to learn of his oral condition is to schedule an appointment with a dentist, yet a significant proportion of the population avoids regular checkups and treatment. An easy tool enabling a simple and non-invasive air sampling at home or in a drugstore will significantly increase patient compliance and curability rates, and decrease healthcare expenditure.