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Comparison of The Fracture Resistance of Metal Reinforced Acrylic vs. Acrylic Only Distal Extension Cantilevers of Fixed Implant Supported Prostheses

Student Number : 8701355N -
MDent research report -
School of Oral Health Sciences -
Faculty of Health Sciences / Purpose: The aim of this research project was to determine the fracture resistance to
linear vertical compressive forces of acrylic and metal-reinforced acrylic fixed
implant supported prosthesis cantilever arms. Methods: Ten non-reinforced and 10
reinforced acrylic superstructures were secured on five evenly distributed implants
and subjected to linear axial compressive forces utilising an InstronĀ® materials testing
machine. The reinforcement consisted of commercially available preformed titanium
metal strengthener bars. Force was applied to the cantilever arms 15mm distal to the
distal most implant and two tests were conducted on each sample. The first drop in
load recorded was noted as a fracture of the sample. Results: Fracture of the acrylic
was noted at the distal most implant in both non-reinforced and the reinforced
samples. The mean fracture value for the non-reinforced samples was 679N and for
the reinforced samples, 628N. Conclusion: No significant difference between the
fracture resistance of the two designs was noted.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/1580
Date01 November 2006
CreatorsOsswald, Martin Alexander
Source SetsSouth African National ETD Portal
LanguageEnglish
Detected LanguageEnglish
TypeThesis
Format7442 bytes, 619680 bytes, application/pdf, application/pdf, application/pdf, application/pdf

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