An evaluation of master cast techniques for multiple abutment implant prostheses
OA Version
Citation
Abstract
This study evaluates the accuracy of three different techniques used to obtain a master cast for the construction of a prosthesis that will fit passively onto osseointegrated implants.
A machined metal model with six fixtures and abutments and a matching template were fabricated. Impressions of this master model were taken and poured in stone. The master casts were divided into three groups of fifteen as follows:
1. Solid
2. Pindex-sectioned
3. Zeiser-sectioned
Each master cast was evaluated for the accuracy with which the template passively fit the abutment replicas. Clinical judgment was assisted by the use of an optical comparator.
Only those master casts sectioned with the Zeiser system allowed an accurate passive fit of the template. This conclusion is attributable to the predetermination of die positions prior to pouring impressions that is the distinguishing feature of the Zeiser system.
Description
Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Graduate Dentistry, 1991 (Prosthodontics)
Bibliography: leaves 54-62.
Bibliography: leaves 54-62.
License
This work is being made available in OpenBU by permission of its author, and is available for research purposes only. All rights are reserved to the author.