A dental cleaning is a professional tooth cleaning you receive from a dental hygienist.
Cleanings should be performed every six months to prevent excessive plaque buildup. Plaque consists of masses of bacteria that grow between and on teeth, at and below the gum line. Plaque left untreated can lead to unhealthy gums and tooth decay.
Polishing completes the cleaning, making the surface of the teeth smooth and minimizing future plaque build-up.