Dr.garu any person toothbrush how many months used after changing compulsory.

Ans: Hello sir/M'am,
How often you need to change your toothbrush depends entirely on your tooth brushing habits. If you're inclined to brush vigorously, exerting a lot of pressure (which is not good, you need to be gentle) then you may need to change your brush frequently.
If you use a HARD brush, it will last you longer. SUPER SOFT brushes will last the least. I normally recommend MEDIUM brushes if your gums are healthy.
The Golden rule, however, is to change your toothbrush when it starts to "flower". When the bristles curl outwards like the petals of a blossoming flower.