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KMID : 0602720040080030034
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Implantology
2004 Volume.8 No. 3 p.34 ~ p.48
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Resonance Frequency Analysis for Assessing Implant Stability: An Experimental Study in Rabbits
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Kim Hyo-Eon
Hwang Jung-Won
Shin Sang-Wan
Ryu Jae-Jun
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Abstract
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Purpose: RFA is considered to be one of the best non-invasive methods for measuring implant stability and osseointegration and for suggesting the possibility of early loading on implants. The aim of this investigation was to prove the validity of RFA for assessing implant stability and osseointegration by comparison with histomorphometric results.
Materials and Method: Two titanium screw implants-eight implants with machined surface and eight implants with SLA surface-, were installed in the each femoral condyle of eight rabbits. RF values were measured for all implants at immediately and 14th, 42th day days. All animals were sacrificed on 14th and 42th for histomorphometric analysis to measure implant-bone contact ratio(%) and bone area inside the threads(%). The RF values were compared with histomorphometric analysis to find out correlations.
Results: there were some relationship between RF values and bone area ratio and between RF values and bone contact ratio. But the sensitivity of OsstellTM(Model 6 Resonance Frequency Analyser: Integration Diagnosis Ltd., Sweden) must be improved and more studies for standardized quantification are needed for clinically stabilized RFA.
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KEYWORD
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implant stability, osseointegration, resonance frequency analysis, histomorphametry
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