Henkin Fernanda de Souza, Macêdo Érika de Oliveira Dias de, Santos Karoline da Silva, Schwarzbach Marília, Samuel Susana Maria Werner, Mundstock Karina Santos
Orthodontics' graduate student, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre/RS, Brazil.
Professor of Certificate in Orthodontic Program, Orthodontics Department, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
Dental Press J Orthod. 2016 Nov-Dec;21(6):67-73. doi: 10.1590/2177-6709.21.6.067-073.oar.
: There is a great variety of orthodontic brackets in the Brazilian market, and constantly evaluating them is critical for professionals to know their properties, so as to be able to choose which product best suits their clinical practice.
: To evaluate the bond strength and the adhesive remnant index (ARI) of different brands of metal brackets.
: A total of 105 bovine incisors were used, and brackets of different brands were bonded to teeth. Seven different bracket brands were tested (MorelliTM, American OrthodonticsTM, TP OrthodonticsTM, Abzil-3MTM, OrthometricTM, TecnidentTM and UNIDENTM). Twenty-four hours after bonding, shear bond strength test was performed; and after debonding, the ARI was determined by using an optical microscope at a 10-fold increase.
: Mean shear bond strength values ranged from 3.845 ± 3.997 (MorelliTM) to 9.871 ± 5.106 MPa (TecnidentTM). The majority of the ARI index scores was 0 and 1.
: Among the evaluated brackets, the one with the lowest mean shear bond strength values was MorelliTM. General evaluation of groups indicated that a greater number of bond failure occurred at the enamel/adhesive interface.
巴西市场上有各种各样的正畸托槽，对它们进行持续评估对于专业人员了解其特性至关重要，以便能够选择最适合其临床实践的产品。
评估不同品牌金属托槽的粘结强度和粘结剂残留指数（ARI）。
总共使用了105颗牛切牙，并将不同品牌的托槽粘结到牙齿上。测试了七个不同的托槽品牌（MorelliTM、American OrthodonticsTM、TP OrthodonticsTM、Abzil-3MTM、OrthometricTM、TecnidentTM和UNIDENTM）。粘结24小时后，进行剪切粘结强度测试；脱粘后，使用光学显微镜放大10倍确定ARI。
平均剪切粘结强度值范围为3.845±3.997（MorelliTM）至9.871±5.106MPa（TecnidentTM）。大多数ARI指数评分是0和1。
在评估的托槽中，平均剪切粘结强度值最低的是MorelliTM。对各组的总体评估表明，在釉质/粘结剂界面发生的粘结失败数量更多。
