使用不同冲洗角度对封闭剂与酸蚀釉质微拉伸粘结强度的影响。
The effect of using different rinsing angles on the micro-tensile bond strength of the sealant to the etched enamel.
作者信息
Afshar Hossein, Nakhjavani Yahya Baradaran, Ahmadi Rahil
机构信息
Department of Pediatric Dentistry, Dental School, Tehran University of Medical Sciences, Tehran, Iran.
Department of Pediatric Dentistry, Shahed University, Tehran, Iran.
出版信息
Contemp Clin Dent. 2014 Jan;5(1):67-70. doi: 10.4103/0976-237X.128669.
BACKGROUND
Attempts to enhance bond strength of the sealant have been among the most important sides of dental research.
AIM
The purpose of the present study was to evaluate the effect of using different rinsing angles on the micro-tensile bond strength of the sealant to the etched enamel.
SETTINGS AND DESIGN
Experimental study.
MATERIALS AND METHODS
Sixty first-premolars were randomly assigned to six groups based on the rinsing angle applied (15°, 30°, 45°, 60°, 75°, and 90°). Following etching and rinsing, a 4-mm height build up of sealant material was created. Bonded specimens were sectioned into sticks (1 × 1 mm), which were subjected to micro-tensile bond strength, testing at a cross-head speed of 0.5 mm/min.
STATISTICAL ANALYSIS USED
The data were analyzed by Kolmogorov-Smirnov and post-hoc Tukey test.
RESULTS
The tensile bond strength in specimens rinsed at 90° were statistically higher compared to those rinsed at 15° and 30° (P < 0.05), and increasing the angle from 15° to 90° was correlated with a reduction in the number of specimens with adhesive failures.
CONCLUSIONS
Rinsing the conditioned enamel surface at 90° may improve the bond strength and retention of the sealant.
背景
提高封闭剂粘结强度一直是牙科研究的重要方面。
目的
本研究旨在评估不同冲洗角度对封闭剂与酸蚀釉质微拉伸粘结强度的影响。
设置与设计
实验研究。
材料与方法
根据冲洗角度（15°、30°、45°、60°、75°和90°）将60颗第一前磨牙随机分为6组。酸蚀和冲洗后，堆积4毫米高的封闭剂材料。将粘结标本切成小条（1×1毫米），以0.5毫米/分钟的十字头速度进行微拉伸粘结强度测试。
所用统计分析方法
数据采用Kolmogorov-Smirnov检验和事后Tukey检验进行分析。
结果
与以15°和30°冲洗的标本相比，以90°冲洗的标本的拉伸粘结强度在统计学上更高（P<0.05），并且从15°到90°增加角度与粘结失败标本数量的减少相关。
结论
以90°冲洗处理过的釉质表面可能会提高封闭剂的粘结强度和保留率。
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