Does surface priming increase the bond strength of orthodontic brackets? An experimental study

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Clinical and Experimental Dental Research Pub Date : 2024-05-07 DOI:10.1002/cre2.888

Sara M. Al Taweel, Spiros Zinelis, Arif Sofyan, Youssef S. Al Jabbari

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Abstract

Objective

To evaluate the effects of metal primer II (MP II) on the shear bond strength (SBS) of orthodontic brackets bonded to teeth and bis-acryl composite provisional material (Bis-Acryl).

Material and Methods

Twenty extracted human premolars specimens and 20 premolar shaped Bis-Acryl specimens were obtained and randomly divided into two surface groups. The first group consisted of human premolars (T) bonded to brackets in the conventional way while in the second (T-MP) MP II was applied on the bracket base before bonding. Similarly, one group of provisional material (PM) was prepared according to conventional treatment and another with the application of MP-II metal bonder (PM-MP). In all cases Ortho-brackets (Victory Series, 3 M) were bonded employing Transbond XT resin cement. Then the brackets were debonded under shear and the results were statistically analyzed by two-way analysis of variance and Holm Sidak at α = .05. The debonded surfaces of all specimens were examined by light microscopy and the Adhesive Remnant Index (ARI) was recorded.

Results

The SBS results exhibited significant differences er (p < .001). For both the T and TM the application of MP-II increased the SBS compared to respective control groups (p < .001). The T-C group was found inferior compared to PM-C (p < .001) and the same is true for the comparison between T-MP and PM-MP (p < .001). ARI indexes demonstrated that the tooth groups were characterized by a predominantly adhesive failure at the resin-dentin interface. In contrast, the control group for provisional crowns (PM-C) showed a predominantly cohesive failure mode, which moved to predominantly adhesive after the application of MP II.

Conclusion

The application of MP II enhances the SBS on both, human enamel and provisional crown materials.

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表面打底是否能提高正畸托槽的粘结强度？实验研究

目的评估金属底漆 II（MP II）对粘结在牙齿和双丙烯酸复合临时材料（Bis-Acryl）上的正畸托槽剪切粘结强度（SBS）的影响。材料和方法取 20 颗拔出的人类前臼齿标本和 20 颗前臼齿形状的 Bis-Acryl 标本，随机分为两个表面组。第一组是用传统方法粘接在托槽上的人类前磨牙（T），而第二组（T-MP）则是在粘接前在托槽基底上涂抹 MP II。同样，一组临时材料（PM）是按照传统方法制作的，另一组则使用了 MP-II 金属粘结剂（PM-MP）。所有情况下都使用 Transbond XT 树脂粘结剂粘结正畸托槽（胜利系列，3 M）。然后在剪切力作用下对托架进行脱粘，并采用双向方差分析和霍尔姆-西达克（Holm Sidak）法（α = .05）对结果进行统计分析。用光学显微镜检查所有试样的脱粘表面，并记录粘合剂残留指数（ARI）。结果 SBS 结果显示出明显的差异 (p < .001)。对于 T 组和 TM 组，与各自的对照组相比，使用 MP-II 增加了 SBS（p < .001）。T-C组的SBS低于PM-C组（p < .001），T-MP和PM-MP之间的比较也是如此（p < .001）。ARI 指数表明，各组牙齿的特点是树脂-牙本质界面主要出现粘合失效。与此相反，临时牙冠的对照组（PM-C）显示出主要的内聚失效模式，而在使用 MP II 后则转变为主要的粘接失效模式。结论应用 MP II 可以增强人类珐琅质和临时牙冠材料的 SBS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical and Experimental Dental Research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.30

自引率

5.60%

发文量

165

审稿时长

26 weeks

期刊介绍： Clinical and Experimental Dental Research aims to provide open access peer-reviewed publications of high scientific quality representing original clinical, diagnostic or experimental work within all disciplines and fields of oral medicine and dentistry. The scope of Clinical and Experimental Dental Research comprises original research material on the anatomy, physiology and pathology of oro-facial, oro-pharyngeal and maxillofacial tissues, and functions and dysfunctions within the stomatognathic system, and the epidemiology, aetiology, prevention, diagnosis, prognosis and therapy of diseases and conditions that have an effect on the homeostasis of the mouth, jaws, and closely associated structures, as well as the healing and regeneration and the clinical aspects of replacement of hard and soft tissues with biomaterials, and the rehabilitation of stomatognathic functions. Studies that bring new knowledge on how to advance health on the individual or public health levels, including interactions between oral and general health and ill-health are welcome.