HI K., I'm going to tell you not to worry yourself sick about this over the next couple weeks, but its alot easier said than done. Remember, this is alot harder on you than it is on her, in the long run, she won't remember any of this, its just as a parent this is hard. The next appointment they will take another quick look and feel, possibly another xray. If the teeth are just rough, they will smooth them off really quick, so they won't be sharp. If the break is larger than that, they will add some composite(white Filling material) that is the color of the tooth. Remember, nothing is as strong as God made them, so they may chip, but to touch them off, is no big deal, and its easier the older she gets. I'm guessing the break didnt' go into the nerve if they didn't do anything at the first appointment, if they did, they would have to do a pulp treatment(kind of like a root canal)and then crown the tooth. As far as having to have the tooth extracted, if the tooth dies, its whats best for the tooth. Even if the tooth gets dark over the next couple years, doesn't mean its dying either by the way, so don't let that freak you out. It may not look as pretty, but may still be ok. I'm an assistant for a pediatric dentist and we do see this alot, not daily, but more than accident a week. And trust me, it is alot harder on parents than it is the child. However keep in mind, NO 15 month old wants anyone to look in their mouth, so they may yell while we look, but as soon as they sit back up, they are fine. We aren't there to hurt anyone, we're there to help. The dentist isn't the bad guy, like they are feared by so many. Thats one of the nice things to me, being an assistant, working for a pediatric dentist, I like to calm the child so they don't have a lifelong fear of a dentist like so many people have. Good luck, and if you have any questions I can help with to get you through this, please feel free to ask:)Sue