The only tooth brush I've kept repurchasing ! Only in the medium strength , if I ever see the hard strength tooth brush I buy too . The medium strength always does the job with out being to harsh on your gums. I have braces so I recommend this product , since it is high maintenance to keep your teeth clean and cavity free with braces on. If you barely got your braces I'd recommend the soft toothbrush strength since your teeth will probably be too sensitive. The bristles never fall out . The tooth brush lasts a lot without having to buy a new one, although dentists always recommend to repurchase a new one after 2 months for hygiene purposes , which is something I do.