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Bond strength of glass fiber posts cemented with bulk-fill flowable composite resin
Applied Adhesion Science Pub Date : 2019-06-04 , DOI: 10.1186/s40563-019-0119-6
Victor da Mota Martins , Camila Ferreira Silva , Lorena Mendes Almeida , Marcella Silva de Paula , Murilo de Sousa Menezes , Paulo Cesar Freitas Santos-Filho

This study evaluated the adhesive bond strength of glass fiber posts cemented with bulk-fill flowable resin in endodontically treated teeth, and the results were compared with those of glass fiber posts cemented with resin cement. Forty bovine incisor roots were selected and randomly divided into 2 groups (n = 20). The external surfaces of the roots were coated with a molding material. The canals were prepared, and then the fiber posts (Whitepost no. 2, FGM) were cemented with either resin cement (Allcem, FGM) (n = 20) or bulk-fill flowable resin (Opus Bulk Fill, FGM) (n = 20). Ten roots (n = 10) of each material were subjected to push-out and pull-out tests (EMIC DL 2000, Brazil) under compressive and tensile loading, respectively; a 50 N load cell and a constant crosshead speed of 0.5 mm/min was used for both tests. The testing data were analyzed using multifactorial analyses of variance two-way ANOVA and the Tukey test (α = 0.05). Two skilled operators determined the failure modes of the samples using a stereomicroscope at 40× magnification with a 2.5D analysis. For push-out bond strength, there were no statistically significant differences between the root thirds in the bulk-fill flowable resin group and those in the resin cement group (p = 0.536). However, there were statistically significant differences (p < 0.001) among the root thirds within the same group. For pull-out bond strength, there were no statistically significant differences between the groups (p = 0.739). Therefore, the bulk-fill flowable resin exhibited similar results to those of the resin cement from the same manufacturer in terms of the cementation of glass fiber posts, which suggests that bulk-fill flowable resin is a suitable alternative material for cementation.

中文翻译:

散装可流动复合树脂粘结的玻璃纤维桩的粘结强度

本研究评估了用牙髓充填的可流动树脂粘结的玻璃纤维桩在牙髓治疗牙齿中的粘结强度,并将结果与​​用树脂粘结的玻璃纤维桩进行了比较。选择40个牛切牙根并将其随机分为2组(n = 20)。根部的外表面涂有模塑材料。准备好运河,然后用树脂水泥(Allcem,FGM)(n = 20)或散装可流动树脂(Opus散装,FGM)(n = 20)。每种材料的十个根(n = 10)在压缩和拉伸载荷下分别经受推拉试验和拉拔试验(EMIC DL 2000,巴西);两个测试均使用50 N称重传感器和0.5 mm / min的恒定十字头速度。使用方差双向ANOVA和Tukey检验(α= 0.05)进行多因素分析来分析测试数据。两名熟练的操作员使用40倍放大率的立体显微镜通过2.5D分析确定了样品的失效模式。对于推出粘结强度,可充填流动性树脂组的三分之二与树脂水泥组的三分之二之间在统计学上无显着差异(p = 0.536)。但是,同一组中的根部三分之二之间在统计学上有显着差异(p <0.001)。对于拉出粘结强度,两组之间无统计学差异(p = 0.739)。因此,就玻璃纤维桩的胶结而言,可充填的可流动树脂表现出与同一制造商的树脂胶结相似的结果,
更新日期:2019-06-04
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