Generally, the retainer will not damage the gums, but it does not rule out that the retainer is not suitable, such as size. When you say no deformation, you mean no tooth recurrence, right? Everyone's corrective plan and corrective products are different when correcting teeth, and the stability of teeth is also different, so whether it will recur is affected by many factors. Many traditional labial braces were used before, but now there are built-in invisible lingual braces and transparent ones, which look similar to your retainer. Transparent ones are relatively easy to relapse, while lingual ones, such as our eBrace and traditional labial ones, generally have a low recurrence rate.
Hope to adopt