BACKGROUND The purpose of this study was the assessment of shear bond strength (SBS), adhesive remnant characteristics, integrity of the enamel, integrity of Discovery Pearl as well as the integrity of Fascination 2 ceramic brackets following SBS testing. METHODS Sixty maxillary first premolars were randomly assigned into two groups. These groups were bonded with their respective brackets. The samples underwent thermocycling (1000 cycles), SBS testing and assessment of the residual adhesive. The statistical analyses used were the independent samples t-test, the Weibull analysis and the chi-square test. RESULTS The independent samples t-test for the comparison of the mean SBS resulted in significant differences between Fascination 2 (10.50 ± 2.61 MPa) and Pearl (13.01 ± 2.50 MPa) brackets (p = 0.0003). The results of the chi-square test for ARI demonstrated a significant difference (p = 0.000) between the groups. A higher frequency of ARI scores of 2 and 3 for Pearl brackets existed. Enamel damage and bracket fracturing was not observed. CONCLUSIONS The mean bond strength value, the adhesive remnant characteristics, the integrity of the enamel and the ceramic brackets as well as the Weibull analyses outcomes were highly encouraging during this in vitro screening. The way is paved for an in vivo investigation with the Pearl ceramic bracket.

中文翻译：

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具有激光结构底座的陶瓷支架的体外评估。

背景技术这项研究的目的是评估SBS测试后的剪切粘结强度（SBS），残余胶粘剂特性，搪瓷的完整性，Discovery Pearl的完整性以及Fascination 2陶瓷托架的完整性。方法将60例上颌第一前磨牙随机分为两组。这些组用各自的括号绑定。样品经过热循环（1000次循环），SBS测试和残留胶粘剂评估。所使用的统计分析是独立样本t检验，威布尔分析和卡方检验。结果用于比较平均SBS的独立样本t检验导致着迷2（10.50±2.61 MPa）和珍珠（13.01±2.50 MPa）支架之间存在显着差异（p = 0.0003）。卡方检验的ARI结果显示两组之间存在显着差异（p = 0.000）。Pearl括号的ARI得分较高，分别为2和3。没有观察到釉质损伤和托槽破裂。结论在此体外筛选过程中，平均粘合强度值，胶粘剂残留特性，搪瓷和陶瓷托槽的完整性以及Weibull分析结果令人鼓舞。该方法为使用Pearl陶瓷支架进行体内研究铺平了道路。在此体外筛选过程中，瓷釉和陶瓷支架的完整性以及Weibull分析的结果令人鼓舞。该方法为使用Pearl陶瓷支架进行体内研究铺平了道路。在此体外筛选过程中，瓷釉和陶瓷支架的完整性以及Weibull分析的结果令人鼓舞。该方法为使用Pearl陶瓷支架进行体内研究铺平了道路。