American Dental Association: Toothbrushes. ada.org/en/member-center/oral-health-topics/toothbrushes.
40
American Dental Association. MouthHealthy: Toothbrushes. mouthhealthy.org/en/az-topics/t/toothbrushes.
41
Wainwright J. et al. An analysis of methods of toothbrushing recommended by dental associations, toothpaste and toothbrush companies and in dental texts. Br Dent J 2014, PMID: 25104719.
