eng Science and Education Publishing International Journal of Dental Sciences and Research 2333-1259 2018-03-19 6 2 48 52 10.12691/ijdsr-6-2-6 IJDSR2018626 article Walid S. Salem 1 2 Mohamed R. Mahmoud 3 Wael M. Zakaria dr.wael.zakaria@qudent.org 3 Yasser A. Araby 3 Department Oral and Maxillofacial Radiology, Beni Suef University, Egypt Department of Prosthetic Dental Sciences, College of Dentistry, Qassim University, Saudi Arabia Objective: The aim of this study was to assess the correlation between the peri-implant bone density and the biological stability around dental implants. Materials and Methods: A total of 56 implants were placed in the mandibular canine area of 28 patients to retain mandibular overdentures. The assessment of bone density changes was obtained through Cone-Beam Computed Tomography (CBCT) and the assessment of implant stability was obtained through Resonance Frequency Analysis (RFA) at loading time, and after 6, 12, 24 months. Results: RFA measurement showed a mean of 67.5± 5.8 ISQ at loading time and a mean of 71.3±5.5 ISQ after 24 months. Bone density around the implants showed a mean of 683.48±78.63 HU at loading time, and a mean of 722.24±58.4 HU after 24 months. These increases were statistically significant (p?0.05). Conclusion: The biological implant stability as measured using the Resonance Frequency Analysis (RFA) and the peri-implant bone density as measured using Cone Beam Computed Tomography (CBCT) showed a significant moderate positive correlation. http://pubs.sciepub.com/ijdsr/6/2/6/ijdsr-6-2-6.pdf biological stability bone density resonance frequency analysis cone beam computed tomography