Validation of Resonance Frequency Analysis by Comparing Implant Stability Quotient Values With Histomorphometric Data
The study was designed to determine the relationship between implant stability quotient (ISQ) values measured using resonance frequency analysis (RFA) and implant-bone distance measured histomorphometrically. Ten identical implants were equally divided into 2 groups based on primary stability at placement. Osteotomies were prepared in harvested goat femurs. ISQ values were measured and compared with implant-bone distance determined by micrometry. Based on the results, it was concluded that RFA can be used to measure implant stability reliably.Abstract
Figure 1. Implants used.
Figure 2. Radiovisiograph (RVG) to identify osteotomy sites.
Figure 3. Implant in final position.
Figure 4. RVG of “tight fit” (control) and “loose fit” (test) implants in final position.
Figure 5. Measurement of implant stability quotient (ISQ).
Figure 6. ISQ value recorded in Ostell instrument.
Figure 7. Retrieved specimen en bloc.
Figure 8. Specimen embedded in autopolymerizing resin.
Figure 9. Sectioned specimen.
Figure 10. Ground section of specimens.
Figure 11. Histomorphometric image of interface of “tight fit” (control) specimen; implant and bone (×40 magnification).
Figure 12. Histomorphometric image of interface of “loose fit” (test) specimen; implant and bone (×40 magnification).
Figure 13. Histomorphometric image of interface of “tight fit” (control) specimen; implant and bone (×100 magnification).
Figure 14. Histomorphometric image of interface of “loose fit” (test) specimen; implant and bone (×100 magnification).
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