They are advertised as intended for dense teeth and sensitive gums. I can confirm that they are very comfortable and hold up well compared to regular floss heads. However, they don't stretch very well for tight teeth. In my case I went from 1 Oral B per Health floss to 2-3 of these to get the same results. Unfortunately, for people like me, this means it costs as much or more than using Oral B Pro floss. You have normal teeth, take these - the price will not disappoint you. Those with narrow teeth should switch to the above Oral B picks.
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