Maruken Toothbrush of Developed by Kenji Kawabe of Kawabe Dental Clinic [Bulk Purchase] (Set 5) Dr.

---------------------------------------------------------------------- Developed by dentist Kenji Kawabe of Kawabe Dental Clinic, it took eight years to create the Maruken toothbrush. DuPont's existing ultra-fine 6 mil thick bristles are implanted at the same length, and are implanted in steps at different times, so it is almost a manual process. , it deteriorates after only about 10 times. It is safe to use the Maruken toothbrush for a month by brushing for 15 minutes three times a day for 45 minutes. (The way to brush your teeth is to the extent that it doesn't hurt when you touch your eyelids.)