So, do clear retainers really prevent teeth shifting? The answer is yes — but only with proper and consistent use. They help maintain your smile by stabilizing your teeth during a crucial phase of post-treatment recovery. If worn as instructed by your orthodontist, clear retainers can effectively prevent teeth from returning to their original positions. Ultimately, their success lies in your commitment to wearing them as directed. If you want long-lasting results from your orthodontic treatment, clear retainers are not optional — they’re essential.