双牙弓印模准确性的体内研究

In vivo Study of the Accuracy of Dual-arch Impressions.

作者信息

de Lima Luciana Martinelli Santayana, Borges Gilberto Antonio, Junior Luiz Henrique Burnett, Spohr Ana Maria

机构信息

Department of Restorative Dentistry, Pontifical Catholic University of Rio Grande do Sul, Brazil.

Department of Dental Materials, School of Dentistry, Uberaba University, Brazil.

出版信息

J Int Oral Health. 2014 Jun;6(3):50-5. Epub 2014 Jun 26.

PMID:25083032

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4109244/

Abstract

BACKGROUND

This study evaluated in vivo the accuracy of metal (Smart®) and plastic (Triple Tray®) dual-arch trays used with vinyl polysiloxane (Flexitime®), in the putty/wash viscosity, as well as polyether (Impregum Soft®) in the regular viscosity.

MATERIALS AND METHODS

In one patient, an implant-level transfer was screwed on an implant in the mandibular right first molar, serving as a pattern. Ten impressions were made with each tray and impression material. The impressions were poured with Type IV gypsum. The width and height of the pattern and casts were measured in a profile projector (Nikon). The results were submitted to Student's t-test for one sample (α = 0.05).

RESULTS

For the width distance, the plastic dual-arch trays with vinyl polysiloxane (4.513 mm) and with polyether (4.531 mm) were statistically wider than the pattern (4.489 mm). The metal dual-arch tray with vinyl polysiloxane (4.504 mm) and with polyether (4.500 mm) did not differ statistically from the pattern. For the height distance, only the metal dual-arch tray with polyether (2.253 mm) differed statistically from the pattern (2.310 mm).

CONCLUSION

The metal dual-arch tray with vinyl polysiloxane, in the putty/wash viscosities, reproduced casts with less distortion in comparison with the same technique with the plastic dual-arch tray. The plastic or metal dual-arch trays with polyether reproduced cast with greater distortion. How to cite the article: Santayana de Lima LM, Borges GA, Burnett LH Jr, Spohr AM. In vivo study of the accuracy of dual-arch impressions. J Int Oral Health 2014;6(3):50-5.

摘要

背景

本研究在体内评估了与乙烯基聚硅氧烷（Flexitime®）搭配使用的金属（Smart®）和塑料（Triple Tray®）双牙弓托盘在油灰/冲洗粘度下的准确性，以及与聚醚（Impregum Soft®）搭配使用在常规粘度下的准确性。

材料与方法

在一名患者中，将种植体水平转移体拧在下颌右第一磨牙的种植体上作为模型。用每个托盘和印模材料制作10个印模。用IV型石膏灌注印模。在轮廓投影仪（尼康）上测量模型和铸型的宽度和高度。结果进行单样本学生t检验（α = 0.05）。

结果

对于宽度距离，使用乙烯基聚硅氧烷（4.513毫米）和聚醚（4.531毫米）的塑料双牙弓托盘在统计学上比模型（4.489毫米）更宽。使用乙烯基聚硅氧烷（4.504毫米）和聚醚（4.500毫米）的金属双牙弓托盘与模型在统计学上没有差异。对于高度距离，只有使用聚醚的金属双牙弓托盘（2.253毫米）与模型（2.310毫米）在统计学上有差异。

结论

与使用塑料双牙弓托盘的相同技术相比，使用乙烯基聚硅氧烷的金属双牙弓托盘在油灰/冲洗粘度下复制的铸型变形较小。使用聚醚的塑料或金属双牙弓托盘复制的铸型变形较大。如何引用本文：Santayana de Lima LM, Borges GA, Burnett LH Jr, Spohr AM.双牙弓印模准确性的体内研究。《国际口腔健康杂志》2014年；6(3):50 - 5。