The tooth cleanser USES ultrasonic wave cleaning machine to use the principle of ultrasonic shock to clean the tooth calculi tartar. This process is not to the tooth cause harm! There is no such thing as "thinner and thinner"!
Dental calculus is usually eat not brushing your teeth brush in place by the remnant of the soft dirt. Over time accumulated. Turned my teeth. Including the dentist again carefully will also have my teeth brushing your teeth. Usually suggest that six months or a year to wash a tooth! If you smoke and drink, tea is often washed in half a year. If you are normal, wash it once a year.
The tooth calculi is long under the gums. So the cleaning process will touch the gum. Bleeding is normal! But bleeding is a matter of periodontal problems!
