Journal
CELLULAR POLYMERS
Volume 40, Issue 1, Pages 20-30Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0262489320971796
Keywords
Dental implant; polyurethane blocks; primary stability
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An in vitro investigation was conducted to simulate bone response to different polyurethane densities with self-tapping threads and round apex implant geometry. The study found that implants with self-tapping threads and round apex had higher insertion torque and stability in high-density polyurethane.
The dental implant primary stability and micromovement absence represent critical factor for dental implant osseointegration. The aim of the present in vitro investigation was to simulate the bone response on different polyurethane densities the effect of self-tapping threads and round apex implant geometry. A total of 40 implants were positioned in D1, D2, D3 and D4 polyurethane block densities following a calibrated drilling protocol. The Insertion, removal Torque and resonance frequency analysis (RFA) means were calculated. All experimental conditions showed insertion torque values >30 Ncm. A significant higher insertion torque, removal and RFA was present in D I polyurethane. Similar evidences were evidenced for D3 and D4. The effectiveness of the present study suggested a valuable clinical advantage for self-tapping threads and round apex implant using, such as in case of reduced bone density in the posterior maxilla
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