PMID: 9421789Jan 9, 1998Paper

Fit of implant frameworks fabricated by different techniques

The Journal of Prosthetic Dentistry
S J RiedyB E Lang

Abstract

This study evaluated the precision of fit between an implant framework and a patient simulation model that consisted of five implant abutments located in the mandibular symphysis area. One-piece cast frameworks were compared with Procera machined and laser-welded frameworks with laser videography. Five frameworks of each type were measured with a laser digitizer and a graphics computer program to determine a single point represented as the "Centroid" for each framework component and each implant abutment. Differences between the paired centroids for each framework/abutment interface are reported as x- and y-axis displacements, and z-axis gaps. The direction of the x- and y-axis displacements was determined. There were significant differences (p < 0.05) in the precision of fit between both the one-piece cast frameworks and the Procera frameworks, when compared with the abutments in the patient simulation model. The laser-welded framework exhibited a more precise fit than the one-piece casting, with significant differences at four of the five prosthodontic interfaces, when evaluated by the mean z-axis gap at the centroid points.

Citations

Mar 31, 2000·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·P J ZervasA B Carr
Dec 17, 2008·Clinical Implant Dentistry and Related Research·Alf EliassonTorsten Jemt
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