Title: Faulty product
Review: The first brush head started making excess noise and suddenly lost its little metal pin within four uses. I chalked it up to one bad product and put the second one on. Within days that one did the same thing and was pinching the inside of my mouth. So I tried the third brush head. This one actually came apart into two pieces right in my mouth after two or three uses. When the fourth brush head started sounding like the first two had before their pins fell out, I decided this was more than a simple fluke and asked for instructions to return them. The seller has said I will receive a refund but I just sent them back a few days ago. I now assume these were factory rejects and I was not made aware of that before my purchase. I will not buy these online again. I have never had a problem with many of the same product purchased in the store.
Is this product review negative?