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Comparison of nonself-tapping tapered implant and self-tapping hybrid implant in terms of implant stability at initial and second fixation: A prospective randomized clinical trial.

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BACKGROUND Various features are provided in dental implants to improve initial fixation. PURPOSE To compare the implant stability of the nonself-tapping tapered implant and self-tapping hybrid implant over a 3-month… Click to show full abstract

BACKGROUND Various features are provided in dental implants to improve initial fixation. PURPOSE To compare the implant stability of the nonself-tapping tapered implant and self-tapping hybrid implant over a 3-month healing period. MATERIALS AND METHODS A randomized controlled trial was conducted. Patients were randomly divided into tapered and self-tapping groups. Patients in the tapered group received NobelReplace Tapered (Nobel Biocare, Sweden) implants, while those in the self-tapping group received NobelSpeedy (Nobel Biocare, Sweden) implants. Implant stability was measured by resonance frequency analysis at surgery and 3 months following implant insertion. Data were analyzed using an independent t-test. RESULTS Forty-three patients (tapered group: 21, self-tapping group: 22) received a total of 88 implants. Initial stability in the tapered group was significantly higher (mean: 60.14, SD: 12.40) than that in the self-tapping group (mean: 54.72, SD: 7.92). Implant stability significantly increased 3 months after implantation in the tapered group (mean: 66.61, SD: 9.00) and self-tapping group (mean: 64.01, SD: 5.78). No significant intergroup difference in implant stability was noted 3 months after surgery. CONCLUSIONS The tapered shape affected initial fixation more than the self-tapping function. However, during the second fixation, both implants showed good stability, and the difference disappeared.

Keywords: implant stability; fixation; group; self tapping; stability

Journal Title: Clinical implant dentistry and related research
Year Published: 2020

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