These replacement heads work great. My wife and I use Oral-B rechargeable toothbrushes with this replacement brush head. Over the years we have tried many heads from different generic brands. Some of them are not even suitable for a toothbrush. Of those that are, none of them are genuine Oral-B brands. They last longer than generics and have bristles that change color with use, giving you a clear visual cue when it's time to swap out your head. We have not found any generics with it. Some generic brands are also painful to use because they are made from cheap materials and are too hard to be comfortable on your teeth and gums. Our primary concern is to save money, but experience has shown us that this is not one of the areas where we can save financially. Now we only buy real ones. In this case, you definitely get what you pay for.
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