title: Custom-cast post fabrication with a thermoplastic material.
abstract: Problems associated with fabrication of custom-cast posts with a plastic rod and autopolymerizing resin include voids in the pattern, locking of the pattern into undercuts, and resin fracture during removal of the pattern. This article describes a system for fabricating custom-cast posts with a thermoplastic resin to address these problems. The system consists of a plastic support rod and a thermoplastic resin. A custom post pattern can be quickly and easily produced by trimming the plastic rod, heating the resin either over a direct flame or in a low-temperature glue gun and seating it into a lubricated prepared canal. The resin flows well and thereby reduces voids. The resin is elastic enough to be removed from small undercuts without locking into the canal or fracturing.
authors.affiliation: Section of Restorative Dentistry, Prosthodontics and Endodontics, College of Dentistry, Ohio State University, Columbus, USA.
authors.forename: S F
authors.initials: SF
authors.lastname: Rosenstiel
authors.forename: M F
authors.initials: MF
authors.lastname: Land
authors.forename: J A
authors.initials: JA
authors.lastname: Holloway
mesh_terms: D003735:Dental Casting Technique / Q000295:instrumentation*; D006358:Hot Temperature; D006801:Humans; D010969:Plastics; D011176:Post and Core Technique / Q000295:instrumentation*; D012117:Resins, Synthetic
chemical_list: D010969:Plastics; D012117:Resins, Synthetic