They're made of the exact same material as being the obvious aligners. Other retainers can be obtained but tend to be created from much less strong elements, which include acrylic. Plan your dental visits for Invisalign in your area currently! Being a precaution, it is recommended to visit your dentist https://mattress-in-sri-lanka06802.jiliblog.com/86108467/5-simple-statements-about-clearcorrect-explained