*Clinical Instructor, Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. †Senior Lecturer, Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. ‡Dental Faculty of Medicine, Carol Davila University, Bucharest, Romania. §Senior Lecturer, Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
Implant Dent. 2017 Aug;26(4):574-580. doi: 10.1097/ID.0000000000000619.
This study investigated strain levels during and after implant insertion, and during and after simulated mastication, in splinted and nonsplinted restorations with different occlusal schemes.
Fresh bovine bone resembling type I jawbone was collected. Strain gauges were placed at each implant's neck, one horizontally and one vertically. Strains at and after implant insertion were recorded. The restoration was loaded with cyclic load simulating mastication. Loading and residual strains were recorded for 6 experimental loading types.
At and after implant insertion, high horizontal strains were measured. Full splint loading presented higher vertical compared with horizontal strains (P < 0.05). Segmented cross-arch splint showed higher horizontal strains (P < 0.05). Premolar loading guidance presented the most favorable loading and residual strain results (P < 0.05).
Splinting implant restorations may reduce strain levels at implant neck area and provide preferable strain distribution during cyclic loading.
本研究调查了带不同咬合方案的夹板和非夹板修复体在种植体植入过程中和植入后、模拟咀嚼过程中的应变水平。
采集类似于 I 型颌骨的新鲜牛骨。在每个种植体颈部放置一个水平和一个垂直的应变计。记录种植体插入时和插入后的应变。用模拟咀嚼的循环载荷对修复体进行加载。记录 6 种实验加载类型的加载和残余应变。
在种植体插入时和插入后，测量到了高的水平应变。全夹板加载比水平应变呈现出更高的垂直应变（P < 0.05）。分段交叉弓夹板显示出更高的水平应变（P < 0.05）。前磨牙加载引导呈现出最有利的加载和残余应变结果（P < 0.05）。
夹板固定种植体修复体可降低种植体颈部区域的应变水平，并在循环加载过程中提供更有利的应变分布。
