Methods for manufacturing dental bleaching devices

摘要

Method of manufacturing a dental bleaching device including a dental bleaching composition and a barrier layer. The bleaching composition includes a dental bleaching agent, a generally linear high molecular weight polyvinyl pyrrolidone (PVP) and/or polyethylene oxide (PEO) tissue adhesion agent that imparts adhesiveness, a rheology-modifying agent such as fumed silica or fumed alumina that reduces or eliminates stringiness otherwise caused by the high molecular weight PVP and/or PEO, and a carrier. The barrier layer may comprise a dental tray or strip. Dental treatment devices including a barrier layer and a quantity of the dental bleaching composition positioned adjacent to the barrier layer.

主权项

1. A method of manufacturing a dental bleaching device comprising:
providing a dental bleaching composition that is sticky and adhesive to teeth comprising:
at least 5% by weight of a dental bleaching agent;at least 5% by weight of a tissue adhesion agent comprising one or more high molecular weight linear polymers;a rheology-modifying agent comprising an inorganic particulate; anda carrier comprising water and at least one of a polyol or glycerin; dispensing a quantity of the dental bleaching composition from a dispensing apparatus onto a barrier layer; and separating the dispensing apparatus from the quantity of the dental bleaching composition without substantially forming elongated strings of the dental bleaching composition.