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KMID : 0362419920300040611
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Journal of Korean Academy of Prosthodontics
1992 Volume.30 No. 4 p.611 ~ p.621
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A PHOTOELASTIC STUDY OF STRESS DISTRIBUTIONS AROUND SURROUNDING BONE TISSUES OF IMPLANTS DEPENDING UPON THE LENGTH OF IMPLANT FIXTURES SUPPORTING FIXED BRIDGES
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Bae Hyong-Su
Cho Sung-Am
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Abstract
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The Present study was performed to evaluate the stress distribution patterns of bone tissues around two Branemark implant fixtures with varying lengths. Six models were used with the combination of 10mm, 7mm, 5mm Branemark implant fixture analogs. The load distribution characteristics of surrounding bone tissues were observed under 64kg vertical static loading on central part of fixed bridge using 2 dimensional photoelastic technique. Through observing the pattern of stress distribution around the implant fixtures, I got the results as follow :
1. Stress distribution pattern of modelⅠ(10mm, 10mm) was best among those of six models.
2. When two fixtures were in equal length, stress was increased in proportion to the reduction of implant surface area.
3. When two fixtures were in unequal length, stress was concentrated on the neck portion of the shorter one.
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KEYWORD
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