i broke my plastic retainer and the bottom is in three peices and the top is cracked. i have no idea how it broke and im stuck wearing my metal one now
Yes, plastic retainers (from my experience) are junk. They break and crack and I personally don't think they 'hold' teeth in place very well. Stick with your metal one. It's better to use anyway in the long run. It'll hold your teeth better and it's better quality. I had to get braces for a second time because those plastic retainers didn't hold my bottom teeth. Hang onto that metal retainer. :) Good luck!