Metal Mouth Message Board

my upper retainer invisalign brace is cracked at the back where it is very thin. Not uncomfortable but the crack is getting bigger. Is it ok to repair with superglue?? I've had the brace for a year and I wear it every night.

Just opinion but I wouldn't put superglue in my mouth. Its toxic.

I don't think superglue is a good idea. Did you only get one retainer? I thought you got a couple?