Khoroushi Maryam, Hosseini-Shirazi Moeen, Farahbod Foroozan, Keshani Fatemeh
Gen Dent. 2016 Jul-Aug;64(4):e11-5.
Bonding of composite resins to sound and caries-affected dentin in cervical areas may necessitate the use of hemostatic agents to control sulcular fluid and hemorrhage. The aim of this in vitro study was to evaluate the bond strengths of a self-etching adhesive system to sound and caries-affected dentin after the use of 3 different hemostatic agents. Composite resin cylinders were bonded to 48 caries-affected and 48 sound dentin surfaces in 8 groups. Groups 1-4 utilized caries-affected dentin: group 1, uncontaminated control; 2, ViscoStat; 3, ViscoStat Clear; and 4, trichloroacetic acid (TCA). Groups 5-8 utilized sound dentin: group 5, uncontaminated control; 6, ViscoStat; 7, ViscoStat Clear; and 8, TCA. The hemostatic agents were applied for 2 minutes and rinsed. After 500 rounds of thermocycling, shear bond strength tests were carried out. Data were analyzed with 1- and 2-way analyses of variance, t test, and post hoc Tukey tests at a significance level of P < 0.05. Bond strength was significantly influenced by dentin type (F = 38.23; P = 0.0001) and hemostatic agent (F = 6.32; P = 0.001). Furthermore, groups 2 and 6 (ViscoStat) showed significantly lower bond strength values than the control groups (groups 1 and 5) in both affected and sound dentin (P = 0.043 and P = 0.009, respectively). Within the limitations of this study, the bond strength of composite resin to caries-affected dentin was significantly reduced compared to that with sound dentin. Among the studied hemostatic agents, ViscoStat resulted in a greater decrease in dentin bond strength. Contamination of both sound and caries-affected dentin with hemostatic agents decreased composite resin bond strength. Of the 3 hemostatic agents used, ViscoStat Clear appeared to have the least detrimental effect on bond strength.
在颈部区域将复合树脂粘结到健康牙本质和龋损牙本质上可能需要使用止血剂来控制龈沟液和出血。本体外研究的目的是评估在使用3种不同止血剂后，一种自酸蚀粘结系统对健康牙本质和龋损牙本质的粘结强度。将复合树脂圆柱体粘结到8组共48个龋损牙本质表面和48个健康牙本质表面。第1 - 4组使用龋损牙本质：第1组，未污染对照组；第2组，ViscoStat；第3组，ViscoStat Clear；第4组，三氯乙酸（TCA）。第5 - 8组使用健康牙本质：第5组，未污染对照组；第6组，ViscoStat；第7组，ViscoStat Clear；第8组，TCA。将止血剂应用2分钟后冲洗。经过500次热循环后，进行剪切粘结强度测试。数据采用单因素和双因素方差分析、t检验以及事后Tukey检验进行分析，显著性水平为P < 0.05。粘结强度受牙本质类型（F = 38.23；P = 0.0001）和止血剂（F = 6.32；P = 0.001）的显著影响。此外，在龋损牙本质和健康牙本质中，第2组和第6组（ViscoStat）的粘结强度值均显著低于对照组（第1组和第5组）（分别为P = 0.043和P = 0.009）。在本研究的局限性内，与健康牙本质相比，复合树脂与龋损牙本质的粘结强度显著降低。在所研究的止血剂中，ViscoStat导致牙本质粘结强度下降幅度更大。止血剂对健康牙本质和龋损牙本质的污染均降低了复合树脂的粘结强度。在所使用的3种止血剂中，ViscoStat Clear似乎对粘结强度的不利影响最小。
