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首页> 外文期刊>The International journal of oral & maxillofacial implants >Biomechanical testing of microblasted, Acid-etched/microblasted, anodized, and discrete crystalline deposition surfaces: an experimental study in beagle dogs.
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Biomechanical testing of microblasted, Acid-etched/microblasted, anodized, and discrete crystalline deposition surfaces: an experimental study in beagle dogs.

机译：微喷砂，酸蚀/微喷砂，阳极氧化和离散晶体沉积表面的生物力学测试：比格犬的实验研究。

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Purpose: Modifications in implant surface topography and chemistry may alter the early bone response at different levels. This study characterized four implant surfaces and evaluated the biomechanical fixation and histologic response at early implantation times in a canine radius model. Materials and Methods: External-hexagon Branemark-type implants were used with four experimental surfaces: microblasted (MI), acid-etched and microblasted (AAM), anodized (A), and discrete crystalline deposition (DCD). Surface topography was assessed by scanning electron microscopy, interferometry, and x-ray photoelectron spectroscopy. The implants were placed in the central region of the radii of eight beagle dogs and remained in vivo for 10 or 30 days. The implants were torqued to interface failure, and a general linear statistical model with torque as the dependent variable and implant surface and time in vivo as independent variables was used. Results: All surfaces presented were textured, and different surface chemistries were observed. No significant differences between implant surfaces were observed for torque at 10 days. However, at 30 days, the AAM surface presented significantly higher torque values compared to the DCD and A surfaces. Significantly higher torque values were observed at 30 days compared to 10 days (P < .001). Conclusions: Significantly different biomechanical fixation dependent on surface preparation was observed after 30 days, and all surfaces were biocompatible and osteoconductive.
机译：目的：修改植入物表面形貌和化学性质可能会在不同水平上改变早期的骨骼反应。这项研究表征了四个植入物表面，并在犬radius骨模型中评估了植入初期的生物力学固定和组织学反应。材料和方法：外部六角Branemark型植入物用于四个实验表面：微喷砂（MI），酸蚀和微喷砂（AAM），阳极氧化（A）和离散晶体沉积（DCD）。表面形貌通过扫描电子显微镜，干涉法和X射线光电子能谱法评估。将植入物放置在八只比格犬半径的中央区域，并在体内保持10或30天。将植入物扭紧至界面失效，并使用以扭矩为因变量且植入物表面和体内时间为自变量的一般线性统计模型。结果：所有呈现的表面都具有纹理，并且观察到不同的表面化学性质。在10天时观察到植入物表面之间的扭矩没有显着差异。但是，在30天时，与DCD和A表面相比，AAM表面呈现出更高的扭矩值。与第10天相比，第30天观察到的扭矩值明显更高（P <.001）。结论：30天后，观察到不同的生物力学固定取决于表面准备，并且所有表面均具有生物相容性和骨传导性。

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