These are made for the iO series toothbrushes so they fit perfect. Most of the other toothbrush heads out there are not compatible with the iO so you have to pay attention, even if they look similar you have to read the package. I honestly can’t tell the difference between these and the ones that came with the toothbrush but I brush on the sensitive setting so that may be why. They give a great clean, my teeth feel like I just got a cleaning at the dentist. Also nice that these came in black as the black ones can sometimes be hard to find. I haven’t used these long enough or even had my toothbrush long enough to know if there is any difference in durability or how long they last compared to other iO brush head variations. I would recommend.

I have a very crowded bottom set of teeth which I have been battling (along with my dentist) to clean properly. My wife has always talked about the way her teeth felt so clean after she has used her old electric toothbrush but I haven’t really paid much attention. Nevertheless come Christmas, she bought me the Oral B io8 electric toothbrush, so I though I would have a go as it was quite a costly purchase. But What a difference it has made, so much so that after a recent visit to the dentist, I had basically what you would call a ‘gold star’ . Carry on he said and keep up the good work, it really has made that much of a difference.

This toothbrush head only works with the io series. Does not work with the original/earlier Oral B toothbrushes.To benefit from this brush head, you would have to invest in the io series toothbrush which is more superior than the “regular Oral B toothbrushes. The io toothbrush takes the dental cleaning level up another notch where it has multiple vibration strength settings. I find that this toothbrush head oscillates and rotates for better cleaning. I also find that it makes cleaning the inner teeth a lot easier and cleaner.