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首页> 外文期刊>The Journal of Prosthetic Dentistry >Analysis of strain around endosseous dental implants opposing natural teeth or implants.
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Analysis of strain around endosseous dental implants opposing natural teeth or implants.

机译：分析与天然牙或种植体相对的骨内种植体周围的应变。

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Statement of problem Natural teeth and implants have different force transmission characteristics to bone. Purpose The purpose of this study was to compare strains induced around a natural tooth opposing an implant with strains around occluding implants under static and dynamic loads. Material and methods Occlusion was created between a natural molar tooth and an implant in 1 side, and 2 implants in the contralateral side of acrylic resin models of both jaws. Strain-gauges were bonded around the neck of the natural tooth and implants, and strains were measured under 75 N and 100 N static axial and lateral dynamic loads in separate load situations using a data acquisition system at sample rate of 1000 Hz. The strain data of the natural tooth and implants were compared for each load by Kruskal-Wallis testing followed by the multiple comparison test (alpha=.05). Results Compressive strains were induced around natural tooth and implants as a result of static axial loading, whereas combinations of compressive and tensile strains were observed during lateral dynamic loading. Strains around the natural tooth were significantly lower than the opposing implant and occluding implants in the contralateral side for most regions under all loading conditions ( P <.05). There was a general tendency for increased strains around the implant opposing natural tooth under higher loads and particularly under lateral dynamic loading ( P <.05). Conclusion Under static and dynamic loads, strain magnitudes around a natural tooth were significantly lower than that of an opposing implant and occluding implants in the contralateral side.
机译：问题陈述天然牙齿和植入物对骨骼的力传递特性不同。目的这项研究的目的是比较在静态和动态载荷下，与种植体相对的天然牙齿周围引起的应变与闭塞种植体周围的应变。材料和方法天然磨牙在一侧的种植体和两个颌的丙烯酸树脂模型的对侧种植体之间形成咬合。将应变仪粘结在天然牙齿和植入物的颈部周围，并使用数据采集系统以1000 Hz的采样率在75 N和100 N静态轴向和横向动态负载下分别测量应变。通过Kruskal-Wallis测试，然后通过多重比较测试（alpha = .05），比较了每种负载的天然牙齿和植入物的应变数据。结果静态轴向载荷导致天然牙齿和植入物周围产生压缩应变，而在横向动态载荷过程中观察到压缩应变和拉伸应变的组合。在所有负荷条件下，大多数区域中天然牙齿周围的应变明显低于对侧植入物和对侧的闭塞植入物（P <.05）。在较高的载荷下，尤其是在横向动态载荷下，相对于天然牙的种植体周围普遍存在应变增加的趋势（P <.05）。结论在静态和动态载荷下，天然牙齿周围的应变幅度显着低于对侧种植体和对侧种植体的咬合种植体。

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