Reborn / Toothbrush

When we have used a toothbrush for a long time , its bristle will be bifurcated . It will be reduced the cleaning efficacy and it will make many problems of hygiene . Therefore , it should be replaced as soon as possible when the toothbrush is bifurcated . But most of people usually forget to buy a new one to replaced it . When it occurred to people to buy a new tooth brush , it have been a long time . This new type of toothbrush can cut the old bristle and grow the new one . Moreover , it has a interface which can show how much bristle remain in the toothbrush .