There are various kinds of electronic toothbrushes available in the market today. Toothbrushes are divided by the hardness of a bristle into following kinds:

1. Very soft
2. Soft
3. Medium
4. Hard
5. Very hard

Soft toothbrushes are intended for children, and also for adults with gum disease. Hard and very hard toothbrushes are used by adults with healthy gums and at the tendency to the raised formation of dental adjournment. Brushes with average degree of hardness are most widely applied to adults. Modern tooth-brushes have often combined bristles of various hardness (as a rule, marked by various color): more harder bristles in the center of a brush effectively clear chewing surfaces of the teeth, peripheral soft bristle clean without injuring gums. For more information on electric toothbrushes, check out https://www.bestelectrictoothbrushclub.com/