Has anyone's LO chipped a tooth? Did you have to do anything about it? What?

My fourteen-month-old had a tiny little nick in her front tooth a month ago. I don't know how it happened, but one day I noticed it and kept an eye on it. Yesterday I noticed that it's become a slightly bigger chip. It doesn't seem to bother her but I don't know if she's now going to need some kind of work done on her tooth. I'm going to call a dentist soon but am kind of freaking out - what will they need to do? Will she need to be sedated? I can't even get her to open her mouth long enough for me to get a good look...