- KIN orthodontic toothbrushes are indicated for people with orthodontic appliances, as these can make it difficult to clean teeth and gums. It has a special design for a complete and thorough oral hygiene, and facilitates access to all corners of the mouth for a highly effective brushing.- During orthodontic treatment, it is necessary to change the toothbrush every 3 months, or sooner if the filaments are worn.