After only 30 days of use. The first head no longer stays on my toothbrush. It just slips out if you turn it upside down. Once you start the brush, it just vibrates out of the brush. I tried it on my GF brush and it's the same. During those 30 days, he brushed his teeth thoroughly. BUT when you spend $39 for 3 triple head brushes that ONLY last 3 months as I can see. And if you can buy 6 normal heads for 33 dollars, that's enough for EVERY 3 months (total: 1.5 years). It's easy to see which one is better and of better quality. Photo: Left is the one I used for 30 days. Below is a genuine replacement head that you can purchase. The right one is a new unused triple head. Look at the warped plastic bushing in a corner of the left triple head, it's cheap! And what happened to the lack of actual metal reinforcement as in the sounded floor? I will never buy them again.
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