I lost my baby tooth, it was the second molar on the right. I was looking at the tooth in my hand, and on the side, it suddenly split. It was only a little bit though. I now have 2 pieces of the tooth and I don't really know what happened to it. So, if you have an idea or an answer to why it happened please tell me. I would also like to know what would happen if I didn't lose the tooth at the time. Would it also split in my mouth? I think that it would but I'm not sure. So, please tell me if you have any answers or ideas to what happened to my tooth. I do brush my teeth regularly.