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KMID : 0602720040080030050
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Implantology
2004 Volume.8 No. 3 p.50 ~ p.60
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The study of clinical validity of the resonance frequency analysis through comparing with removal torque value ; An experimental study in rabbits
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Lee Jong-Kyu
Shin Sang-Wan
Ryu Jae-Jun
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Abstract
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Clinical quantitative measurement of stability at placement and after placement functional state of implant plays a role in the evaluation of implant’s success. The aim of this study was to investigate clinical significance of the resonance frequency analysis, which is one of the method measuring the stability of implant, through comparing removal torque value with resonance frequency value. 8 domestic white rabbits were used in this study. Two types of implant(machined surface implant and SLA implant) were placed, total 32 implants were placed in the tibia of rabbits. Four rabbits were sacrificed on 14th day and four rabbits were sacrificed on 42th day after placement in order to measure removal torque value(Nm) and resonance frequency value(Hz). The Student’s t-test and Pearson’s correlation was undertaken for statistical analysis. The results of the this study were as follows : 1. There was gradual increase on resonance frequency value and removal torque value in both types of implant when measured on at implant, 14th day, and 42nd day
respectively. 2. There was no significant difference on the resonance frequency between Machined surface implant and SLA surface Implant, among the results measured on at implant, 14th day, and 42nd day respectively (P>0.05). 3. There was no significant difference on the removal torque value between Machined surface implant and SLA surface Implant, when measured 14th day, and 42nd day respectively (P>0.05). 4. Significant co-relationship was found between the result of the resonance frequency measurement and the result of removal torque measurement (Pearson correlation coefficients; 0.869-0.888). In conclusion, the theme of this study confirmed that resonance frequency analysis was reliable and useful methods for quantitatively measuring implant stability and evaluation of osseointegration, however future research should further investigate on improving stabilized efficiency and standardizing quantitative analysis on implant stability.
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KEYWORD
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Implant stability, Osseointegration, Resonance frequency analysis, Removal torque
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