3 sides bristle design, while three sides clean teeth, gums and teeth ditch, clean teeth do not stay dead; bristles and the tooth surface is automatically formed 45 degree angle, strong detergency comprehensive Dental Association and other effects of global reach each respected '. Belleville brushing method 'requirements; UL TEALON bristle material, soft and toughness, both effective cleaning teeth, without damage teeth and gums; teeth unique massage effect, can effectively massage the gums, periodontal improve blood circulation, strong teeth and prevent . gingival recession brush with a unique tongue scraper, keep your mouth fresh and effective US Patent No.:. US 5171066 Chinese Patent Number: ZL 01260728.2 ZL 01260729.0