Dental Hygiene tip. From Oakridge – Saturday, July 13, 2019 by admin | Jul 13, 2019 | Dental Hygiene, Noindex, Tip | 0 comments Today’s Dental Hygiene tip. Replace your toothbrush regularly. Some dentists recommend that you replace your toothbrush every three months. Look at the bristles. If they no longer stand straight, it’s time to replace the toothbrush.