Our Oral-B Pulsonic toothbrush was discontinued in 2014, and the replacement brush heads were discontinued in 2016. Because of this, the replacement brush heads are now no longer available, and I can’t give any recommendations on where they can be purchased.
The good news is that, with our current range of Oral-B electric toothbrushes, all of our replacement brush heads are compatible with all of our electric toothbrush handles! So it should be much easier to find a compatible replacement brush head for any of our newer models of electric toothbrushes.
You’ll find a handy list of our Oral-B electric toothbrushes on our website, and a list of our replacement brush heads. Each product’s page has a ‘Find Retailers’ button you can use to see where it is available. Fortunately, the actual design and benefits of the Sonic and Pulsonic toothbrushes is now built in to all our toothbrushes from the Pro 1000 and up.