Massage & stimulate gums. Flared side bristles. ADA Accepted (American Dental Association). Sensational cleaning & massaging every time you brush! Uniquely Designed With: Elongated Tip with longer more flexible cleaning bristles; Flared Side Bristles to massage & stimulate gum. The Mentadent Oral Care Brush is Accepted as a cleansing device that has been shown to remove plaque and reduce gingivitis when used as directed in a program of good oral hygiene to supplement regular professional care. Council on Science Affairs, American Dental Association. Made in USA.