The effect of green tea on the shear strength of brackets after home whitening treatment

IF 1.68 Q2 Dentistry

Applied Adhesion Science Pub Date : 2016-07-04 DOI:10.1186/s40563-016-0069-1

Renata C. A. Schwertner, Joyce S. Y. Leoncio, Alessandro Schwertner, Ricardo D. Guiraldo, Murilo B. Lopes, Hellen C. De Carvalho, Alcides Gonini-Júnior, Sandrine B. Berger

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引用次数: 5

Abstract

This study, we evaluated the effect of green tea on the shear bond strength of metal orthodontic brackets to human enamel after home whitening treatment. Ninety premolars were selected and divided into six experimental groups: G1, no treatment (positive control); G2, whitening (negative control); G3, no whitening?+?10?% sodium ascorbate (SA) gel; G4, no whitening?+?10?% green tea (GT) gel; G5, whitening?+?SA; and G6, whitening?+?GT. The samples of G2, G5, and G6 were whitened with 10?% carbamide peroxide for 8?h daily, during 14?days at 37?°C. G3, G4, G5, and G6 were treated with the respective antioxidants (GT or SA) for 1?h at 37?°C. After the treatments, the brackets were bonded with Transbond XT. Then, the samples were tested in a universal testing machine and the adhesive remnant index (ARI) was examined under 40× magnification. Data were submitted to analysis of variance, Tukey’s and Dunnett’s tests (α?=?5?%). The averages (standard deviations) obtained were: G1, 17.6 (4.1); G2, 9.8 (3.6); G3, 18.1 (4.1); G4, 18.2 (4.7); G5, 14.9 (2.5); and G6, 14.8 (5.4). G2 had statistically lower values than the other groups. Concerning the ARI, all groups had a higher number of flaws type score 0 (no material adhered to the tooth). We conclude that the use of GT can be an alternative method to allow bracket bonding immediately after home whitening treatment.

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绿茶对家庭美白后支架抗剪强度的影响

本研究评估了绿茶对家庭美白治疗后金属正畸托槽与牙釉质剪切结合强度的影响。选择90颗前磨牙，分为6个实验组:G1组，未治疗组(阳性对照);G2，美白(阴性对照);G3，不美白?+?10?%抗坏血酸钠凝胶;G4，不美白?+?10?%绿茶(GT)凝胶;G5,美白? + SA);G6，美白?+?GT。G2、G5和G6样品用10?%过氧化脲为8?每天H，在14?在37°C下。G3、G4、G5和G6分别用抗氧化剂(GT或SA)处理1?h在37°C。处理后用Transbond XT粘接托槽。然后在万能试验机上进行测试，并在40倍放大镜下检测残余黏合剂指数(ARI)。将数据提交方差分析、Tukey’s和Dunnett’s检验(α = 5 %)。得到的平均值(标准差)为:G1, 17.6 (4.1);G2, 9.8 (3.6);G3, 18.1 (4.1);G4, 18.2 (4.7);G5, 14.9 (2.5);G6, 14.8(5.4)。在统计学上，G2组的数值低于其他组。在ARI方面，所有组的缺陷类型得分均高于0(无材料粘附在牙齿上)。我们得出的结论是，使用GT可以是一种替代方法，可以在家庭美白治疗后立即进行支架粘接。

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

Applied Adhesion Science Dentistry-Dentistry (miscellaneous)

自引率

0.00%

发文量

审稿时长

13 weeks

期刊介绍： Applied Adhesion Science focuses on practical applications of adhesives, with special emphasis in fields such as oil industry, aerospace and biomedicine. Topics related to the phenomena of adhesion and the application of adhesive materials are welcome, especially in biomedical areas such as adhesive dentistry. Both theoretical and experimental works are considered for publication. Applied Adhesion Science is a peer-reviewed open access journal published under the SpringerOpen brand. The journal''s open access policy offers a fast publication workflow whilst maintaining rigorous peer review process.