Clinic of Oral Surgery, Faculty of Dentistry, University of Belgrade, Belgrade, Serbia.
Int J Oral Maxillofac Implants. 2011 Jul-Aug;26(4):718-24.
This study was intended to investigate, through resonance frequency analysis (RFA), the stability of implants placed in an early loading protocol via the osteotome sinus floor elevation technique in the posterior maxilla. All implants featured a sandblasted/acid-etched active surface.
An early loading protocol was considered for patients in whom implants with a sandblasted, large-grit/acid-etched active surface (SLActive) were placed in the posterior maxilla by the osteotome sinus floor elevation technique. Implant stability, which was measured by RFA at surgery and at weekly intervals for the following 6 weeks, was used as the most significant inclusion criterion. At the end of the stability observation period, only implants with a stability quotient of 65 or higher were loaded. Implants were followed for 2 years.
Twenty-seven patients received 42 implants, 40 of which were subjected to an early loading protocol 6 weeks after placement. Two years after loading, all 40 implants were surviving, without clinically or radiographically detectible complications.
An early loading protocol can be used for SLActive implants placed in the posterior maxilla via the osteotome sinus floor elevation technique if their stability is confirmed by RFA.
本研究旨在通过共振频率分析（RFA）研究经骨凿窦底提升技术在前磨牙区行早期负荷种植体的稳定性。所有种植体均采用喷砂酸蚀主动表面。
对采用骨凿窦底提升技术在前磨牙区植入喷砂大颗粒酸蚀主动表面（SLActive）种植体的患者采用早期负荷方案。种植体稳定性采用 RFA 在手术时和术后 6 周内每周进行测量，这是最重要的纳入标准。在稳定性观察期结束时，仅加载稳定性商数为 65 或更高的种植体。对种植体进行 2 年的随访。
27 例患者共植入 42 枚种植体，其中 40 枚种植体在植入后 6 周内进行了早期负荷。负荷 2 年后，所有 40 枚种植体均存活，无临床或影像学可检测的并发症。
如果通过 RFA 确认 SLActive 种植体的稳定性，可在前磨牙区经骨凿窦底提升技术采用早期负荷方案。
