Camilotti Veridiana, Consalter Admilton Fritsche, Dobrovolsk Max, Bosquirolli Virginia, Busato Priscila R D, Mendonça Marcio J
Operative Dentistry and Prosthodontics Area, Dental School, Western Paraná State University, Brazil.
Acta Odontol Latinoam. 2011;24(1):104-9.
The aim of this study is to evaluate the microleakage a self-adhesive cement recently marketed Rely X U100 (3M ESPE). Thirty roots of bovine teeth with 14 mm long were restored with self-adhesive cement and Glassix fiber post DC3 (FGM). Roots were randomly divided into three groups (n=10) according to the technique of placement of the cementing agent: G1 - Centrix syringe; G2 - Lentulo drill and G3 - Manual technical. After cementation, provisional restorations were fabricated with composite resin (Opallis/FGM) without the use adhesive system. After they were finished, polished and thermo cycled by 1000 cycles, in water at temperature of 5 degrees C and 55 degrees C, 30 seconds in each bath. For microleakage test each group of roots was immersed in recipients with Rodhamine B dye solution buffered at 2%, during 24 hours. After this time, the samples were washed in tap water, sectioned and evaluation of dye leakage. The values of infiltration were obtained by the qualitative method (scoring) and statistical analysis using Kruskal-Wallis test and also by the quantitative method (Image Tool) and statistical analysis using ANOVA one way. For both tests, no significant difference between the techniques of placement of the self-adhesive cement. Based on these findings, micro-infiltration was present in all groups, and the placement technique did not influence the degree of micro-leakage, both for the qualitative analysis as to the quantitative.
本研究的目的是评估一种最近上市的自粘型粘结剂Rely X U100（3M ESPE）的微渗漏情况。选取30颗长度为14毫米的牛牙牙根，用自粘型粘结剂和Glassix DC3纤维桩（FGM）进行修复。根据粘结剂的放置技术，将牙根随机分为三组（n = 10）：G1 - Centrix注射器组；G2 - 螺旋输送器组；G3 - 手工技术组。粘结后，用复合树脂（Opallis/FGM）制作临时修复体，不使用粘结系统。完成后，进行抛光，并在5℃和55℃的水中进行1000次热循环，每次水浴30秒。为进行微渗漏测试，将每组牙根浸泡在含有2%缓冲罗丹明B染料溶液的容器中24小时。之后，将样本用自来水冲洗、切片并评估染料渗漏情况。通过定性方法（评分）和使用Kruskal-Wallis检验的统计分析获得渗透值，同时也通过定量方法（图像工具）和使用单向方差分析的统计分析获得渗透值。对于这两种测试，自粘型粘结剂的放置技术之间没有显著差异。基于这些发现，所有组均存在微渗透，并且放置技术对微渗漏程度没有影响，无论是定性分析还是定量分析。
