Retainers are necessary to prevent teeth from shifting after braces. No single retainer type is superior—customization is key. Fixed retainers can increase plaque buildup and require extra hygiene ...

"A thorough investigation of any unwanted tooth movements occurring in the presence of a fixed retainer should be completed, and remedial action taken to prevent serious complications," Singh wrote.

If you wear a retainer, you might be wondering how to care for it. Your retainer sits inside your mouth and against your teeth, so it quickly accumulates bacteria, plaque, and tartar. Just like you ...