Why do we brush our teeth regularly? Many reasons, but the main one is that we only get one set of adult teeth, and they need to last us for the rest of our lives. From the time we were very young, we were taught to brush our teeth. It is one of those healthy habits that follow you into adulthood.
So, what would happen if we decided to stop brushing altogether? Well, for one, nobody would want to talk to you because your breath would be terrible! But besides that, our teeth would eventually begin to decay, break off, and fall out.