Abstract: A container for a dental retainer consisting of a straight or curved section of hollow tubular material that is opaque to a resin curing light source which encloses a length of fiber which can be braided that is preimpregnated with a light curable bonding resin where two end caps seal the ends of the container one of which is removed upon application of the retainer material which is slowly withdrawn as needed from the container and bonded by light curing the resin to each tooth in sequence. Using the container and the braided fiber, the retainer is easier to align, bond and trim to the teeth producing a more functional and cosmetically pleasing result.