Impression coping spacer and method of dental casting

摘要

A prosthodontic casting is formed from an implant osseointegrated within a bone and an impression coping coupled with the implant. An impression coping spacer circumscribes a supra-mucosal portion of the impression coping. A relatively high viscosity casting composition is applied to openings in a tray, and then the tray and relatively high viscosity casting composition placed to encompass the supra-mucosal portion of the impression coping and the impression coping spacer. The relatively high viscosity casting composition is at least partially cured, and then the impression coping spacer is extracted from the casting composition. This creates a void about the impression coping. An impression casting composition is then injected into the void and cured to form the prosthodontic casting. The now substantially cured combination casting composition and impression casting composition is removed from the implant, and subsequently used to guide the formation of a dental prosthesis.

主权项

1. A prosthodontic casting system for preparing a casting of an one or more impression copings and surrounding oral features of a patient, comprising:
a dental implant adapted to be osseointegrated within a patient's bone; an impression coping having a mucosal portion adjacent a first end adapted to operatively couple with said dental implant and having a supra-mucosal portion distal to said mucosal portion; a transient impression coping spacer adapted to initially operatively circumscribe said supra-mucosal portion of said impression coping, wherein said impression coping spacer further comprises a conical geometry including a distally outwardly tapered outer surface, and a cylindrical inner surface adapted to releasibly contact said impression coping; a first casting composition encompassing said supra-mucosal portion of said impression coping and said impression coping spacer and defining an inner casting surface of the oral features of a patient adjacent to and spaced from said supra-mucosal portion of said impression coping; said impression coping spacer being adapted to be operatively extracted from said first casting composition and thereby form a void between said first casting composition and said supra-mucosal portion of said impression coping, said distally outwardly tapered surface adapted to releasibly contact said first casting composition, and an impression casting composition adapted to be disposed in said void after said impression coping spacer is extracted, and configured to establish a substantially consistent thickness between said first casting composition and said supra-mucosal portion of said impression coping, said impression casting composition being operatively coupled with said first casting composition to yield the cast of at least one impression coping and the oral features of the patient adjacent to the impression coping.