Before we go into the different Philips brush heads available for your Sonicare toothbrush, we should explain what is meant by BrushSync technology. Sign up to the T3 newsletter for smarter living ...

We spent six months testing brand-name and generic replacement heads for electric toothbrushes to see if it was worth paying more. Here’s what we found. ... Philips Sonicare: $1: $8: $2.30: ...

My real beef is with Philips Sonicare and Braun Oral-B, which indicate on the replacement head packaging that the brushes should be replaced every three months.