Thank you for viewing! ^_^ Invisalign Mouthpieces for Orthodontic Treatment, Used, Set of 24 These are used Invisalign mouthpieces created at a dental clinic. The usage period was from December 2025 to August 2025. * Changed every 5 to 10 days * Non-smoker * Some mouthpieces are stained because I have drunk tea and coffee while wearing them. ※ These mouthpieces are molded to a specific individual's teeth and cannot be worn. Please be aware of this. Orthodontic treatment costs around 1 million yen, so it's not something you can do casually. I hope these will be helpful for: * Those considering Invisalign or mouthpiece orthodontics * Dental hygienists and dental students studying Invisalign All 24 aligners are present and in sequential order. Please note that the name section has been removed with nail polish remover or peeled off. The mouthpieces will be placed in the original box, which will then be packaged in a cardboard box. Shipping will be done via anonymous delivery, and the items will be carefully packaged.