Technique for removing cement between a fixed prosthesis and its substructure

A selection of abstracts of clinically relevant papers from other journals. The abstracts on this page have been chosen and edited by John R. Radford.

Abstract

Heating in a furnace in order to separate the substructure from the superstructure.

Main

Alsiyabi A S & Felton D A Journal of Prosthodont 2009; 18: 279–282

This paper revisits a method that allows the separation of a metal substructure from its superstructure. These can then be re-used either temporarily or permanently. In the first clinical example, the loose screws that partially retained abutments to implants were located by preparing an access channel through the bridge. The screws were fully removed. The substructure that was cemented to the superstructure was then separated by heating in a furnace. The abutments were cleaned by air-abrasion, re-used and another bridge was constructed. For another patient, a cast dowel was separated from a metal ceramic crown, again by firing in a furnace. The cleaned dowel was then recemented before 'remargination' of the preparation and fabrication of another crown.