Many dental professionals recommend changing your toothbrush about every three months, and the American Dental Association (ADA) recommends that you replace your toothbrush approximately every three to four months, or sooner if the bristles are frayed.
Don't hesitate, replace your toothbrush head from now on!
Specifications:
.Color: White + Blue
.Compatible Models: D4510\D12013\D12013W\D12523\D17525\D18\D19523\D19545\
OC18\D8011\D9525\D9511\D25\D30\D32\type4739 3709 3728 3738
.Package Dimensions: 140.090.023.0mm
.Weight: 27.0g
Package Included:
.4× Toothbrush Replacement Heads
"Many dental professionals recommend changing your toothbrush about every three months".
That advice is so out-dated. Using these 'compatible' brush heads, you'll be changing them every 7-14 days, as they fall apart! :)