The replacement time / electric toothbrush

ELASTICITY OF TOOTHBRUSH AND REMOVAL OF PLAQUE DECLINES WHEN THE TOOTHBRUSH IS USED FOR 2~3 MONTHS. WHEN A TOOTHBRUSH IS USED FOR MORE THAN 3 MONTHS, IT BECOMES FULL WITH BACTERIA AND GERMS. PEOPLE BECOME LAZY TO CHANGE THE TOOTHBRUSH PERIODICALLY AND DON'T REALIZE HOW SERIOUS AND HARMFUL IT IS TO USE A TOOTHBRUSH THAT HAS BEEN USED FOR MORE THAN 3 MONTHS. THIS PRODUCT LETS YOU KNOW WHEN TO CHANGE THE TOOTHBRUSH HEAD BY CHANGING COLOR AND PATTERN. THE TOOTHBRUSH CHANGES TO AN APPETITE SUPPRESSANT COLOR DUE TO PATTERN AND BACTERIA AND WILL MAKE YOU CHANGE TO A NEW TOOTHBRUSH.