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Bond Strength Comparison of Orthodontic Brackets Bonded Using Four Indirect Bonding Transfer Techniques.

机译：使用四种间接粘结转移技术粘结的正畸托槽的粘结强度比较。

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摘要

After the introduction of the straight wire appliance by Andrews in 1972 to the orthodontic profession, it became important to position the brackets accurately on the teeth to achieve the desired results from the prescription built in the appliance. Silverman et al. in 1972 introduced the indirect bonding technique to help position the appliances accurately on the teeth. Indirect bonding technique is achieved by positioning the orthodontic brackets on the dental model of the patient and fabricating a transfer tray that holds the brackets and allows for bonding of a section or the entire dental arch simultaneously. There has been many modifications to the original indirect bonding technique described by Silverman. Most of the current techniques are based on a technique introduced by Thomas (1979) in which the brackets are attached to the dental cast with composite resin to form a custom-fit bonding pad.;With the introduction of different IDB techniques, the orthodontist is faced with the task of choosing a technique that is consistent and efficient. One that requires the least amount of laboratory preparation and cost. The purpose of this in vitro study was to compare the tensile bond strength of four indirect bonding (IDB) transfer techniques that allows for using light-cure adhesive to bond the orthodontic brackets with the custom composite base to the teeth, and to compare them to direct bonding (DB). Three hundred and thirty permanent bovine incisors were collected and mounted in acrylic blocks in groups of 6 representing an upper moderately crowded anterior arch with 2 teeth in the central position, 2 teeth at the palatally crowded lateral incisor position, and 2 teeth at the canine position. The blocks were randomly assigned to 5 groups; (1) Double Tray IDB, (2) RMbond(TM) IDB, (3) RMbond(TM) with an overlay hard tray, (4) Glue Gun IDB techniques, and (5) a control group of DB.;Tensile bond testing was performed for the test groups within 1 hour of the bonding procedure. Mean Tensile Bond Strength (TBS) (+/- SD) was 4.87 (+/-1.5), 3.98 (+/-1.41), 4.52 (+/-1.61), 4.5 (+/-1.42) and 3.83 (+/-1.24) for groups 1--5 respectfully. A one way ANOVA test showed that group (1) had a significantly higher TBS compared to groups (2) and (5); F = 5.621, p 0.001. When the tooth position was considered, a one way ANOVA revealed a significant difference at the central position with group (3) having higher TBS compared to the control group (5), F = 4.436, p = 0.002. For each tooth, a modified Adhesive Remnant Index (ARI) was determined. All test groups had 81% of failure at the bracket adhesive interface where the entire adhesive was left on the tooth surface, 100% of the Direct bonding group (5) sample included. All IDB groups had some adhesive left on the tooth surface in 16% of the sample and no adhesive left on the tooth in 1.9%.
机译：自1972年安德鲁斯（Andrews）将直丝矫治器引入正畸专业后，将托架准确地定位在牙齿上以从矫治器中内置的处方中获得所需的结果就变得很重要。 Silverman等。 1972年，引入了间接粘合技术，以帮助将矫治器准确地定位在牙齿上。通过将正畸托槽放置在患者的牙齿模型上并制作一个转移托架来固定托槽，该托槽可固定托槽并允许同时粘接部分或整个牙弓。对Silverman描述的原始间接绑定技术进行了许多修改。当前的大多数技术都是基于Thomas（1979）引入的技术，该技术中，将支架用复合树脂连接到牙模上，以形成可定制的结合垫。面临选择一致且高效的技术的任务。一种需要最少的实验室准备和成本的工具。这项体外研究的目的是比较四种间接粘结（IDB）转移技术的拉伸粘结强度，这些技术允许使用光固化胶将具有定制复合材料基托的正畸托槽粘结到牙齿上，并将它们进行比较。直接绑定（DB）。收集了330个永久性牛切牙，并以丙烯酸树脂块的形式安装，每组6个，分别代表一个上部中等拥挤的前牙弓，中央位置有2颗牙齿，lateral骨侧切牙位置有2颗牙齿，犬齿位置有2颗牙齿。块被随机分配到5组； （1）双托盘IDB，（2）RMbond（TM）IDB，（3）带有覆盖硬托盘的RMbond（TM），（4）胶枪IDB技术和（5）DB对照组;拉伸粘合在结合过程的1小时内对测试组进行测试。平均拉伸粘合强度（TBS）（+/- SD）为4.87（+/- 1.5），3.98（+/- 1.41），4.52（+/- 1.61），4.5（+/- 1.42）和3.83（+ / -1.24）分别针对1--5组。一种单因素方差分析测试表明，组（1）的TBS明显高于组（2）和（5）； F ＝ 5.621，p ＜0.001。当考虑牙齿位置时，一种单因素方差分析显示，与对照组（5）相比，具有较高TBS的组（3）的中央位置存在显着差异，F = 4.436，p = 0.002。对于每颗牙齿，确定修改后的黏着残余指数（ARI）。所有测试组在整个粘合剂留在牙齿表面的托槽粘合剂界面处有81％的失效，其中包括100％的直接粘合组（5）样品。所有IDB组的样品中有16％残留在牙齿表面，而1.9％残留在牙齿上。

著录项

  • 作者

    Bakhsh, Heba Hussain.;

  • 作者单位

    University of Illinois at Chicago.;

  • 授予单位 University of Illinois at Chicago.;
  • 学科 Health Sciences Dentistry.
  • 学位 M.S.
  • 年度 2011
  • 页码 56 p.
  • 总页数 56
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 遥感技术;
  • 关键词

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