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首页> 外文期刊>The International journal of oral & maxillofacial implants >Comparison of the Primary Stability of Two Implant Designs in Two Different Bone Types: An In Vitro Study
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Comparison of the Primary Stability of Two Implant Designs in Two Different Bone Types: An In Vitro Study

机译：两种不同骨类型的两种种植体设计的主要稳定性比较：一项体外研究

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Purpose: Achievement of primary stability upon surgical placement of dental implants is a key factor for successful osseointegration and depends mainly on implant-related factors. The aim of this study was to compare and assess the primary stability of implants with active and regular threads in type 2 as well as type 4 bone. Materials and Methods: Fresh cow vertebrae and a pelvis were used as models of type 4 bone and type 2 bone, respectively. Implants with two different designs-regular-threaded and active-threaded-both 4.3 mm wide and 13 mm long, were placed in both types of bone (n = 80). Stability measurements were completed by four prosthodontists using two different Periotest devices and resonance frequency analysis. Statistical analyses were performed with the Mann-Whitney U test. Results: No statistically significant differences were found between the implant types in either type of bone in the stability measured with different methods. For both implant types, the mean resonance frequency values in type 2 bone were statistically significantly higher than in type 4 bone, whereas the mean Periotest values in type 2 bone were statistically significantly lower than in type 4 bone. Conclusion: Within the limitations of this in vitro study in bone types 2 and 4, the active-threaded implant, which was invented to increase primary stability, did not show higher primary stability compared to a regular-threaded implant.
机译：目的：在外科植入牙科植入物时达到基本稳定性是成功进行骨整合的关键因素，并且主要取决于植入物相关因素。这项研究的目的是比较和评估2型和4型骨中具有活动和规则螺纹的植入物的主要稳定性。材料和方法：新鲜的牛椎骨和骨盆分别用作4型骨和2型骨的模型。具有两种不同设计的植入物-宽4.3 mm，长13 mm的常规螺纹和活动螺纹都放置在两种类型的骨中（n = 80）。四个义齿修复师使用两个不同的Periotest设备和共振频率分析完成了稳定性测量。用Mann-Whitney U检验进行统计分析。结果：用不同方法测得的稳定性在两种类型的骨头中的植入物类型之间均未发现统计学上的显着差异。对于这两种植入物类型，2型骨的平均共振频率值在统计学上显着高于4型骨，而2型骨的平均Periotest值在统计学上显着低于4型骨。结论：在这项针对2型和4型骨的体外研究的局限性内，与常规螺纹植入物相比，为提高初级稳定性而发明的活动螺纹植入物没有显示出更高的初级稳定性。

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