Department of Orthodontics, Faculty of Dentistry, Erciyes University, Melikgazi, Kayseri, Turkey.
Eur J Orthod. 2010 Apr;32(2):214-8. doi: 10.1093/ejo/cjp035. Epub 2009 Jun 9.
The aim of this in vitro study was to evaluate the shear bond strength (SBS) of different metallic and ceramic bracket bonding combinations using self-etching primers (SEPs). Eighty freshly extracted human premolar teeth were randomly divided into four equal groups for bonding with ceramic or metallic brackets as follows: group 1, metallic brackets bonded with conventional acid etching; group 2, metallic brackets bonded with Transbond Plus Self-Etching primer (TPSEP); group 3, ceramic brackets bonded as per group 1; group 4, ceramic brackets bonded as per group 2. The SBS of these brackets was measured and recorded in megapascals (MPa). The adhesive remnant index (ARI) scores were determined after bracket failure. Data were analyzed with the analysis of variance, Tukey, and chi-square tests. The bond strength of group 3 (mean: 36.7 +/- 11.8 MPa) was significantly higher than group 4 (mean: 26.6 +/- 8.9 MPa; P < 0.05), group 1 (mean: 25.5 +/- 5.1 MPa; P < 0.01), and group 2 (mean: 22.9 +/- 7.3 MPa; P < 0.001). No significant differences in debond locations were found among the groups (P > 0.05). Compared with conventional acid etching, SEPs significantly decreased the SBS of ceramic orthodontic brackets.
本体外研究旨在评估使用自酸蚀底漆（SEPs）时不同金属和陶瓷托槽粘结组合的抗剪粘结强度（SBS）。80 颗新鲜拔出的人前磨牙随机均分为四组，分别用以下方法粘结陶瓷或金属托槽：组 1，传统酸蚀粘结金属托槽；组 2，Transbond Plus Self-Etching primer（TPSEP）粘结金属托槽；组 3，按组 1 的方法粘结陶瓷托槽；组 4，按组 2 的方法粘结陶瓷托槽。以兆帕（MPa）为单位测量并记录这些托槽的 SBS。托槽破坏后，确定粘结残留指数（ARI）评分。采用方差分析、Tukey 和卡方检验对数据进行分析。组 3（平均：36.7 +/- 11.8 MPa）的粘结强度明显高于组 4（平均：26.6 +/- 8.9 MPa；P < 0.05）、组 1（平均：25.5 +/- 5.1 MPa；P < 0.01）和组 2（平均：22.9 +/- 7.3 MPa；P < 0.001）。各组间的脱粘位置无显著差异（P > 0.05）。与传统酸蚀相比，SEPs 显著降低了陶瓷正畸托槽的 SBS。
