I forget which brand we used for a number of years. First one quit quite soon after purchase. Called the company. They asked what toothpaste we were using. At the time, Crest baking soda/peroxide variety. Was told by the toothbrush company to switch toothpaste brands to one with a lower baking soda content as that was damaging the electric toothbrush. Switched to Colgate brand, same variety and did not have issues with breakage again.