Q. Hello, I had braces 3 years ago, and i still wear the retainer a few nights a week, I recently had an accident and have a hairline fracture/crack in my front tooth. It is difficult to see, you can only see it in certain light, I am worried that if i wear my retainer it will put pressure on the crack and cause it to get worse, it is a vertical crack going from the top to the bottom. It isn’t sore and my dentist had a great deal of trouble finding it. I have been to the dentist and was told not to worry, but I am not sure about wearing my retainer. I haven’t worn it for a little while because of this, and a few of my teeth have moved a little, I don’t really know what to do! Any advice would be appreciated.