THE CORRELATION BETWEEN BONE DENSITY AND IMPLANT STABILITY

Abstract

Abstract: Introduction: Long-term studies have documented the successful treatment of edentulous and partially edentulous patients with endosseous titanium implants. Success rates between 81% and 93% have been reported. Successful treatment with endosseous implants is dependent upon a complex relationship of numerous factors. Bone density and implant stability are important factors for implant osseointegration which has been widely demonstrated by several authors. Objectives: This study was designed to evaluate the correlation between bone density estimated by Cone-Beam Computed Tomography (CBCT) and stability of dental implants estimated by resonance frequency analysis using Osstell ISQ. Materials and methods: Ten dentis s-clean tapered implants were inserted in posterior mandibular edentulous spaces in ten adult patients. The bone density of implants recipient sites were determined by density value (HU) using CBCT. And the implants’ stability were determined by quantitative unit called implant stability quotient (ISQ) measured by resonance frequency analysis using Osstell ISQ. Both values were determined immediately post-operatively and on intervals of 3&6 months. Results: The mean implant stability value was 67.3 ± 9.14 immediately post-operatively, then increased on the 3rd month to be 72.3 ± 3.95 & 75.2 ± 5.33 on the 6th month, there was a statistical significant increase. Also the results of the present study showed that the mean bone density value was 827.96 ± 206.85 immediately post-operatively, then increased to 890.67 ± 138 & 1018.0 ± 149.79 on the 3rd and 6th months respectively, there was a statistical significant increase. Conclusion: There was no correlation between bone density and implant stability. Keywords: bone density, implant stability, cone beam CT, resonance frequency analysis..