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首页> 外文期刊>International Journal of Implant Dentistry >Interfacial biomechanical properties of a dual acid-etched versus a chemically modified hydrophilic dual acid-etched implant surface: an experimental study in Beagles
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Interfacial biomechanical properties of a dual acid-etched versus a chemically modified hydrophilic dual acid-etched implant surface: an experimental study in Beagles

机译：双酸刻蚀与化学修饰的亲水性双酸刻蚀植入物表面的界面生物力学特性：在Beagles中进行的实验研究

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Abstract BackgroundThe high survival clinical success rates of osseointegration are requisites for establishing a long-term biomechanical fixation and load-bearing potential of endosseous oral implants. The objective of this preclinical animal study was to evaluate the effect of surface microtopography and chemistry on the early stages of biomechanical rigidity with a sandblasted, dual acid-etched surface, with or without an additional chemical modification (SAE-HD and SAE, respectively), in the tibia of Beagle dogs.MethodsTwo pairs of implants, with the same macrogeometry but different surface technology ((a) dual acid-etched surface treatment with hydrochloric and sulfuric acid followed by microwave treatment and insertion in isotonic saline solution to increase hydrophilicity (SAE-HD) (test, n =?12) and (b) dual acid-etched surface (SAE) (control, n =?12)), were installed bilaterally in the proximal tibia of six Beagle dogs. In order to determine the effect of surface modification on biomechanical fixation, a test protocol was established to assess the torque and a complete set of intrinsic properties. Maximum removal torque (in N?cm) was the primary outcome measure, while connection stiffness (N?cm/rad) and removal energy (×?10?2J) were the secondary outcome measures and were assessed after 2 and 4?weeks in vivo. A general linear statistical model was used and performed for significant differences with the one-way ANOVA followed by Tukey post hoc test ( P ?0.05).ResultsThe removal torque values did not reveal significant statistical differences between SAE-HD and SAE implants at any observation times ( P =?0.06). Although a slight increase over time could be observed in both test and control groups. SAE-HD showed higher removal energy at 4?weeks (999.35?±?924.94?×?10??2?J) compared to that at 2?weeks (421.94?±?450.58?×?10??2?J), while SAE displayed lower values at the respective healing periods ( P =?0.16). Regarding connection stiffness, there were no significant statistical differences neither within the groups nor over time. There was a strong, positive monotonic correlation between removal torque and removal energy (=0.722, n =?19, P ?0.001).ConclusionsIn this study, no significant differences were observed between the specific hydrophilic (SAE-HD) and hydrophobic (SAE) surfaces evaluated, in terms of biomechanical properties during the early osseointegration period.
机译：摘要背景骨整合的高存活率临床成功率是建立骨内口腔植入物长期生物力学固定和承载潜力的必要条件。这项临床前动物研究的目的是评估表面微观形貌和化学对喷砂，双酸蚀表面的生物力学刚度早期的影响，并进行或不进行其他化学修饰（分别为SAE-HD和SAE）方法两对植入物，具有相同的宏观几何形状但表面技术不同的两对植入物（（a）用盐酸和硫酸进行双酸蚀刻表面处理，然后进行微波处理并插入等渗盐溶液中以增加亲水性（ SAE-HD）（测试，n =？12）和（b）双酸蚀表面（SAE）（对照，n =？12））分别安装在六只比格犬的胫骨近端。为了确定表面改性对生物力学固定的影响，建立了一个测试方案来评估扭矩和一组完整的固有特性。最大去除扭矩（以N？cm为单位）是主要结果指标，而连接刚度（N？cm / rad）和去除能量（×？10？2J）是次要结果指标，并在2和4周后评估体内。使用通用线性统计模型并进行单向方差分析和Tukey事后检验（P <？0.05）有显着性差异。结果去除扭矩值未显示任何时间SAE-HD和SAE植入物之间的显着统计学差异。观察时间（P =？0.06）。尽管在测试和对照组中都可以观察到随着时间的推移略有增加。 SAE-HD在4？周（999.35？±？924.94？×？10 ?? 2？J）处显示出较高的去除能量，而在2？周（421.94？±？450.58？×？10？2？J）下显示出更高的去除能量。 ，而SAE在各个愈合期显示较低的值（P =？0.16）。关于连接刚度，在组内和时间上都没有显着的统计学差异。去除扭矩与去除能量之间存在强正的单调相关性（= 0.722，n =？19，P <？0.001）。结论在本研究中，比亲水性（SAE-HD）与疏水性（ SAE）表面在骨整合早期的生物力学特性方面进行了评估。

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