How Often To Replace Toothbrush Head. If you have an electric toothbrush, you should replace your toothbrush head every 3 months as well. The bristles on your toothbrush head slowly wear out or break down with use — and the more you use your toothbrush, the more often you may need to replace it.
Ad whiter teeth for under $50! We recommend not using the same toothbrush that you use for teeth to clean your nightguard, retainers or clear aligners. You should change it sooner if you notice the bristles are splayed or not looking like they originally did.
As a general hygiene rule, look at changing your toothbrush around four times a year.”
Consider a toothbrush with a head size that is not too small or too big to easily access all areas of your mouth. However, trying to remember when you last changed your brush head can be difficult. One reason is because brush heads can get weary and will be less effective in removing plague. Ideally, you'd swap out your toothbrush every six to eight weeks.