i've been submerging it in water and denture cleaner for a very long time, then i decided to wear it today but there's some black buildup on the metal part of my lower retainer. do you guys think that listerine or soemthing would work good? i tried using my nails to scratch it off, but only managed to get most of it off.
update: ah it's because something broke off
update: ah it's because something broke off
