At what temp can a retainer withstand?

Most dental retainers, especially those made from clear plastic or thermoplastic materials, can typically withstand temperatures up to about 140°F (60°C) without deforming. However, exposing them to higher temperatures, such as boiling water, can cause warping or damage. It's best to avoid hot water and heat sources when cleaning or storing retainers to ensure their longevity. Always refer to the manufacturer's guidelines for specific temperature recommendations.