Bond strength to surface enamel for different tooth types
Bond strength to surface enamel for different tooth types
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DOI：
10.1016/s0109-5641(00)00068-3
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发表时间：
2001-03-01
期刊：
影响因子：
5
通讯作者：
Hogg, SD
中科院分区：
文献类型：
--
作者：
Hobson, RS;McCabe, JF;Hogg, SD
目的：正畸固定矫治器的治疗依赖于托槽与牙釉质的有效结合。在治疗过程中，牙釉质脱粘对牙科医生和患者来说都是不方便和昂贵的。控制粘合效果的因素尚未完全了解。例如，从来没有一项研究来确定牙列中不同牙齿的粘合效果。本研究的目的是探讨可能存在的差异，酸蚀牙釉质上的不同牙齿的牙列。方法：240个提取健全的人类牙齿收集从白色高加索受试者的年龄在10岁和22岁之间。每种牙齿类型的大约20颗牙齿使用标准酸蚀刻技术与使用光固化复合材料（Transbond，3M Unitek）的“A公司”不锈钢支架粘合。结果：牙型对粘结强度有显著影响（p < 0.001）。下颌第一磨牙的平均粘结强度最大，上颌第一磨牙的平均粘结强度最小。在上颌牙弓中，前牙的粘结强度大于后牙（p < 0.001）。在下牙弓中，前牙的粘结强度低于后牙（p < 0.001）。意义：本研究结果对牙科复合材料与牙釉质的粘结强度测试以及正畸治疗中粘结可靠性的预期具有深远的意义。研究结果表明，为了实现有意义的比较，釉质粘结强度测量应使用相同的牙齿类型，或应使用适当的分层测试牙齿组。这些发现也可以部分解释，尽管牙科医生（C）2001年牙科材料学会尽了最大的努力，但牙釉质粘结效果的变化。由Elsevier Science Ltd.出版，版权所有。
Objectives: Fixed appliance therapy in orthodontics relies on the effective bonding of brackets to surface enamel. Bracket de-bonding during treatment is both inconvenient and costly to both dentist and patient. Factors which control the efficacy of the bond are not fully understood. For example, there has never been a study to determine the efficacy of bonding to different teeth in the dentition. The aim of this study was to investigate the possible differences in bond strength to acid etched enamel on the different teeth of the dentition.Methods: Two hundred and forty extracted sound human teeth were collected from white Caucasian subjects between the age of 10 and 22 years. Approximately 20 teeth of each tooth type were bonded using a standard acid etch technique with 'A company' stainless steel brackets using a light cured composite (Transbond, 3M Unitek). Shear bond strength (24 h) was measured using an Instron testing machine.Results: Tooth type was found to have a significant effect on bond strength (p < 0.001). The greatest mean bond strength was found on the lower first molar teeth, and the lowest on the upper first molar teeth. In the upper arch, bond strength was greater on anterior teeth than posterior teeth (p < 0.001). In the lower arch bond strength was weaker on anterior teeth than posterior teeth (p < 0.001).Significance: The results have profound implications for bond strength testing of dental composites to enamel as well as to the expectations of bond reliability in orthodontic therapy. The findings suggest that, in order to achieve meaningful comparisons, enamel bond strength measurements should be made using the same tooth type, or that appropriate stratification of groups of test teeth should be used. These findings may also explain, in part, variability in enamel bonding efficacy despite the best efforts of the dental practitioner (C) 2001 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.