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KMID : 0354619920040010123
Journal Dankook Dental Research Institute
1992 Volume.4 No. 1 p.123 ~ p.140
The Photoelastic Analysis of Stresses Induced by the Variable Bar Design of ImplantSupported Overdenture



Abstract
Since the concept of osseointegration was developed by Branemark, dental implant prosthesis are widely accpted by dental clinicians.
There are two methoids to treat edentulous patients by dental implant : One is an edentulous bone anchored fixed bridge and the other is an overdenture.
The implant supported overdentre has several advantages. It is esthetically acceptable, easy to maintain good oral hygiene and more economic.
Key factors that influence the success of osseointegration are quality of bone, integration between implant and bone, loading condition.
This study compared the difference in the stress patterns induced by variable bar design using photoelastic analysis.
@ES The results were as follows :
@EN 1. In the overdenture supported by two fixtures, three point loading on the bar showed more stress distribution than one point loading on the middle of the bar.
2. In the overdenture supported by the two fixtures, the more loading points went distally, the lager the stress became.
3. The stress distributionmof the overdenture supporte by four fixtures showed smaller than that of the overdenture supported by two fixtures.
KEYWORD
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