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首页> 外文期刊>The International journal of oral & maxillofacial implants >Effect of Labial Implant Inclination on the Retention and Stability of Different Resilient Stud Attachments for Mandibular Implant Overdentures: An In Vitro Study
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Effect of Labial Implant Inclination on the Retention and Stability of Different Resilient Stud Attachments for Mandibular Implant Overdentures: An In Vitro Study

机译：唇植入倾斜对下颌植入物覆盖的不同弹性螺柱附件保持和稳定性的影响：体外研究

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Purpose: This study evaluated the influence of labial implant inclination on the retention and stability of different resilient stud attachments for mandibular implant overdentures. Materials and Methods: Four identical mandibular edentulous acrylic resin models were fabricated. For each model, two implants were inserted at the canine areas with different degrees of labial inclination: 0,10,20, and 30 degrees. Four experimental overdentures were fabricated over the models and fitted to the implants using resilient stud attachments. Regular retentive inserts (extra-light, light, and medium retention) were used for all implant inclinations, and extended-range inserts (extra-light and medium retention) were used for 30-degree inclination only. Vertical (retention) and oblique (stability) dislodging forces (lateral, anterior, and posterior) were evaluated initially (initial retention) and after overdenture insertion and removal (final retention). Results: After repeated insertions and removals, 30-degree inclination recorded the highest retention and lateral stability, and 0 degrees recorded the highest posterior stability; 20 degrees showed the lowest retention, and 30 degrees recorded the lowest posterior stability. The highest stability and retention values were recorded with light and medium regular inserts, and the lowest values were noted with extra-light regular inserts. Conclusion: Within the limits of this study, moderate labial implant inclination (10 degrees and 20 degrees) was shown to negatively affect retention and anterior/lateral stability, and excessive implant inclination (30 degrees) to negatively affect posterior stability. When implants are inclined labially, it is recommended to use light and medium regular stud attachments to obtain high levels of retention and stability for two-implant-retained overdentures.
机译：目的：本研究评估了唇植入倾斜对下颌植入物覆盖的不同弹性螺柱附着的保持和稳定性的影响。材料和方法：制备四个相同的下颌薄型丙烯酸树脂模型。对于每个模型，在犬区域插入两种植入物，具有不同程度的阴唇倾角：0,10,20和30度。在模型上制造了四种实验覆盖，并使用弹性螺柱附件安装在植入物上。对于所有植入倾斜，使用常规保持刀片（超光，光和和中潴留），并且仅使用延伸范围的插入件（超光和介质保持）仅用于30度倾斜度。垂直（保持）和倾斜（稳定性）最初（初始保留）和覆盖插入和去除后（最终保留），评估垂直（稳定性）脱臼力（侧向，前部和后部）。结果：重复插入和去除后，30度倾斜记录了最高的保留和横向稳定性，0度记录了最高的后稳定性; 20度显示最低的保留度，30度记录了最低的后稳定性。用光和介质常规插入物记录最高的稳定性和保留值，并且用超轻常规插入物注意到最低值。结论：在本研究的界限内，显示适度的唇植入倾角（10度和20度），显示出对保留和前部/横向稳定性产生负面影响，并且过度植入物倾斜度（30度）对后稳定性产生负面影响。当植入物倾斜倾斜时，建议使用光和介质常规螺柱附件以获得高水平的保留和稳定性，用于两个植入物保留的过度。

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