I have never had a cavity! I have used the toothbrush that my mom recommend as she was dentist. However, I started to notice my gums getting sore and was concerned it was an issue with my teeth. Turns out I was brushing too hard. Then this gem showed up in my birchbox, and man it took 2 days and the pain in my gums went away. I plan on buying several of these just to make sure I always one. It is a simple looking brush that allows me to brush my teeth without worrying how much pressure I apply to my gums and teeth. Great Product! Great Price!