Klocke Arndt, Shi Jianmin, Kahl-Nieke Bärbel, Bismayer Ulrich
Department of Orthodontics, College of Dentistry, University of Hamburg, Hamburg, Germany.
Angle Orthod. 2003 Dec;73(6):697-701. doi: 10.1043/0003-3219(2003)073<0697:IVEOAM>2.0.CO;2.
The aim of this in vitro investigation was to evaluate bond strength for a cyanoacrylate adhesive in combination with an indirect bonding technique. Eighty bovine permanent mandibular incisors were randomly divided into four groups of 20 teeth each. The influence of two factors on shear bond strength was investigated: (1) type of adhesive (Smartbond cyanoacrylate, Sondhi Rapid Set composite sealant) and (2) time of debonding (30 minutes and 24 hours after bonding). Stainless steel mesh-based brackets were used. Although, bond strength was not significantly different for the two debonding time periods, significantly lower bond strength measurements were found for the cyanoacrylate adhesive (P < .001). The mean bond strength for the cyanoacrylate adhesive group was 5.44 +/- 1.65 MPa for debonding 30 minutes and 6.92 +/- 1.48 MPa for debonding 24 hours after the bonding procedure vs 16.16 +/- 5.25 MPa and 14.98 +/- 2.85 MPa for the composite adhesive groups debonded at 30 minutes and 24 hours, respectively. The Weibull analysis indicated that there was an increased risk of bond failure at clinically relevant levels of stress for indirect bonding with the cyanoacrylate adhesive.
本体外研究的目的是评估氰基丙烯酸酯粘合剂结合间接粘结技术的粘结强度。80颗牛下颌恒切牙被随机分为四组，每组20颗牙。研究了两个因素对剪切粘结强度的影响：（1）粘合剂类型（Smartbond氰基丙烯酸酯、Sondhi快速固化复合密封剂）和（2）脱粘时间（粘结后30分钟和24小时）。使用了基于不锈钢网的托槽。尽管两个脱粘时间段的粘结强度没有显著差异，但氰基丙烯酸酯粘合剂的粘结强度测量值明显较低（P <.001）。氰基丙烯酸酯粘合剂组在粘结后30分钟脱粘时的平均粘结强度为5.44±1.65MPa，在粘结后24小时脱粘时为6.92±1.48MPa，而复合粘合剂组在30分钟和24小时脱粘时分别为16.16±5.25MPa和14.98±2.85MPa。威布尔分析表明，使用氰基丙烯酸酯粘合剂进行间接粘结时，在临床相关应力水平下粘结失败的风险增加。
