Our mouth is the best environment for oral bacterial to grow. Oral bacterial combines with the tooth surface to become dental plaque, mineralized plaque into calculus and attach to the tooth surface. Bacterial, food and a certain period of time will cause tooth decay. Plaque, calculus will stimulate the gingiva and cause gum inflammation.Such as brushing your teeth bleeding , bite bleeding and halitosis. More seriously, it can lead to periodontitis , make the teeth loose and fall off. At the same time, brushing cannot remove plaque calculus. Therefore, it is suggested going to an oral medical institution for an oral examination and professional cleaning every six months to a year .

    In addition, those who smoke and drink tea for a long time, their teeth surface is deposited with a large number of smoke spot and pigment,which is hardly removed by brushing. But professional cleaning can clear and restore the color of the white teeth.