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首页> 外文学位 >The Effect of Impression Technique, Connection Type and Implant Angulation on Impression Accuracy.
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The Effect of Impression Technique, Connection Type and Implant Angulation on Impression Accuracy.

机译：压印技术，连接类型和植入角度对压印精度的影响。

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摘要

Purpose. To measure the accuracy of implant impression techniques in vitro, using open and closed tray techniques with internal and external connection implants at various angulations.;Materials and methods. Three internal connection implants and three external connection implants were placed in an acrylic master cast as follows from posterior to anterior: 90, 15 and 30 degrees. Twenty-four open tray and closed tray impressions were made and the resulting casts were analyzed using digital photography. The following measurements were performed (1) horizontal displacement; (2) vertical displacement; (3) angulation displacement in the lateral view; (4) angulation displacement in the frontal view. Statistical analysis was completed by using a factorial analysis of variance (three-way ANOVA). A p value ≤0.05 was considered significant. Tukey's HSD test was used to analyze significant differences for the angulation variable.;Results. (1) The results show that there was no difference in the impression accuracy when open vs. closed tray impression techniques were used except in the horizontal plane where the closed tray produced more accurate impressions than the open tray. (2) External connection implants produced a significantly larger horizontal displacement compared to the internal connection implants. (3) The results did not follow a particular pattern for the effect of implant angulation on impression accuracy. (4) The interactions observed between connection type, implant angulation and tray type and the resulting discrepancy in the horizontal plane showed that implants placed at 90 degrees produced the largest horizontal displacement. In the vertical plane, internal connection implants placed at 15 degrees when an open tray technique was used produced the largest vertical displacement.;Conclusion. Clinically, the results from this study suggest that when encountering full arch implant restorations it is most beneficial to have the implants as parallel to each other as possible and to remove the custom tray along the same path as the implant angulation. The splinted open tray technique is time consuming and it might not result in a more accurate master cast. Open or closed tray techniques can be used, however, the master cast should always be verified before fabricating the final prosthesis.
机译：目的。为了在体外测量植入物压印技术的准确性，可使用带有不同角度的内部和外部连接植入物的开放式和封闭式托盘技术。材料和方法。将三个内部连接植入物和三个外部连接植入物按以下顺序从后到前放置在丙烯酸母铸物中：90度，15度和30度。进行二十四个开放式托盘和封闭式托盘压印，并使用数字摄影对所得铸件进行分析。进行了以下测量：（1）水平位移； （2）垂直位移； （3）侧视图中的角度位移； （4）正面视图中的角度位移。通过使用方差因子分析（三次方差分析）完成统计分析。 P值≤0.05被认为是显着的。 Tukey的HSD测试用于分析角度变量的显着差异。 （1）结果表明，使用开放式和封闭式托盘压印技术时，压印精度没有差异，除了在水平面中，密闭式托盘比敞开式托盘产生更准确的压印。 （2）与内部连接植入物相比，外部连接植入物产生了明显更大的水平位移。 （3）对于植入角度对压印精度的影响，结果没有遵循特定的模式。 （4）观察到的连接类型，植入物成角度和牙托类型之间的相互作用以及由此产生的水平面差异表明，以90度放置的植入物产生最大的水平位移。在垂直平面中，当使用开放式托盘技术时，以15度放置的内部连接植入物产生最大的垂直位移。临床上，这项研究的结果表明，当遇到全牙弓种植体修复体时，使种植体尽可能彼此平行并沿着与种植体成角度相同的路径移出定制牙盘是最有益的。带夹板的开放式托盘技术非常耗时，并且可能不会导致更准确的母版铸造。可以使用开放式或封闭式托盘技术，但是在制造最终的假体之前，应始终对铸模进行验证。

著录项

  • 作者

    Kempler, Joanna.;

  • 作者单位

    University of Maryland, Baltimore.;

  • 授予单位 University of Maryland, Baltimore.;
  • 学科 Health Sciences Dentistry.
  • 学位 M.S.
  • 年度 2011
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地球物理学;
  • 关键词

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