Effect of bone quality and implant surgical technique on implant stability quotient (ISQ) value |
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Authors: | Yoon Hong-Gi Heo Seong-Joo Koak Jai-Young Kim Seong-Kyun Lee Su-Young |
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Institution: | 1Department of Dentistry, School of Dentistry, Seoul National University, Seoul, Korea.;2Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, Korea. |
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Abstract: | PURPOSEThis study investigated the influence of bone quality and surgical technique on the implant stability quotient (ISQ) value. In addition, the influence of interfacial bone quality, directly surrounding the implant fixture, on the resonance frequency of the structure was also evaluated by the finite element analysis.MATERIALS AND METHODSTwo different types of bone (type 1 and type 2) were extracted and trimmed from pig rib bone. In each type of bone, the same implants were installed in three different ways: (1) Compaction, (2) Self-tapping, and (3) Tapping. The ISQ value was measured and analyzed to evaluate the influence of bone quality and surgical technique on the implant primary stability. For finite element analysis, a three dimensional implant fixture-bone structure was designed and the fundamental resonance frequency of the structure was measured with three different density of interfacial bone surrounding the implant fixture.RESULTSIn each group, the ISQ values were higher in type 1 bone than those in type 2 bone. Among three different insertion methods, the Tapping group showed the lowest ISQ value in both type 1 and type 2 bones. In both bone types, the Compaction groups showed slightly higher mean ISQ values than the Self-tapping groups, but the differences were not statistically significant. Increased interfacial bone density raised the resonance frequency value in the finite element analysis.CONCLUSIONBoth bone quality and surgical technique have influence on the implant primary stability, and resonance frequency has a positive relation with the density of implant fixture-surrounding bone. |
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Keywords: | Compaction Self-tapping Tapping Implant Stability Quotient (ISQ) Resonance frequency analysis Finite element analysis |
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