1, keep your mouth clean.

To maintain oral hygiene, in addition to toothbrushes, auxiliary cleaning tools such as interdental brushes, tooth flushers and dental floss can be used to clean teeth comprehensively, which can not only reduce the possibility of black triangle, but also reduce oral problems caused by insufficient tooth cleaning.

Step 2 wash your teeth

If even the tooth washing machine can't save your "black triangle", then you can only choose to wash your teeth. During general correction, oral cleanliness is difficult to maintain. Doctors will advise patients to wash their teeth every three months, which can effectively clean their teeth and prevent the emergence of "black triangle".