Raz Perry, Meir Haya, Levartovsky Shifra, Sebaoun Alon, Beitlitum Ilan
Department of Periodontology and Dental Implants, The Maurice and Gabriela Goldschleger School of Dental Medicine, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel.
Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel.
Materials (Basel). 2022 Apr 23;15(9):3072. doi: 10.3390/ma15093072.
Primary implant stability can be evaluated at the time of placement by measuring the insertion torque (IT). However, another method to monitor implant stability over time is resonance frequency analysis (RFA). Our aim was to examine the effect of bone type, implant design, and implant length on implant primary stability as measured by IT and two RFA devices (Osstell and Penguin) in an in vitro model. Ninety-six implants were inserted by a surgical motor in an artificial bone material, resembling soft and dense bone. Two different implant designs-conical connection (CC) and internal hex (IH), with lengths of 13 and 8 mm, were compared. The results indicate that the primary stability as measured by RFA and IT is significantly increased by the quality of bone (dense bone), and implant length and design, where the influence of dense bone is similar to that of CC design. Both the Osstell and Penguin devices recorded higher primary implant stability for long implants in dense bone, favoring the CC over the IH implant design. The CC implant design may compensate for the low stability expected in soft bone, and dense bone may compensate for short implant length if required by the anatomical bone conditions.
种植体植入时的初期稳定性可通过测量植入扭矩（IT）来评估。然而，另一种长期监测种植体稳定性的方法是共振频率分析（RFA）。我们的目的是在体外模型中，研究骨类型、种植体设计和种植体长对通过IT以及两种RFA设备（Osstell和Penguin）测量的种植体初期稳定性的影响。使用手术动力钻将96枚种植体植入类似松软骨和致密骨的人工骨材料中。比较了两种不同的种植体设计——锥形连接（CC）和内六角（IH），长度分别为13毫米和8毫米。结果表明，通过RFA和IT测量的初期稳定性会因骨质量（致密骨）、种植体长和设计而显著增加，其中致密骨的影响与CC设计的影响相似。Osstell和Penguin设备均记录到，在致密骨中长种植体的种植体初期稳定性更高，CC种植体设计优于IH种植体设计。CC种植体设计可能弥补松软骨中预期的低稳定性，并且如果解剖学骨条件需要，致密骨可能弥补种植体长度不足的问题。
