In vitro stress analysis of dental implants supporting cement-related and screw-retained prostheses
Date
1996
DOI
Authors
Kim, Wook-Dong
Version
OA Version
Citation
Abstract
Little is known about the biomechanics of the cement-retained implant prostheses despite their increasing use. A photoelastic and strain gauge analysis was performed to evaluate the stress transferred to the implants and their supporting structure through cement-retained and screw-retained prostheses. The deflections of the prostheses at the time of the loading were also measured. Three types of prostheses were tested. In the single crown test, the cement-retained crowns transferred less stress than the screw-retained crowns when a vertical force (110 N) was applied. In two unit fixed partial denture test, the loading point was closer to one of the implants. The cement-retained prostheses transferred less stress at the apex of the farthest implant from the loading point, and there were no differences in other areas. In the two implant supported distal cantilevered prostheses, the cement-type developed more stress at the distal cervical area of the distal implants and the mesial cervical area of the mesial implants than the screw-type. The screw-type cantilevered prostheses developed more stress around the apex of both implants than the cement-type.
Description
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Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Dental Medicine, 1996 (Prosthodontics).
Includes bibliographical references: (leaves 49-54).
Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Dental Medicine, 1996 (Prosthodontics).
Includes bibliographical references: (leaves 49-54).
License
This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.