Carneiro Karina Kato, Meier Marcia Margarete, Santos Clenilton Costa Dos, Maciel Adeilton Pereira, Carvalho Ceci Nunes, Bauer José
Department of Restorative Dentistry, Dental School, Universidade CEUMA, São Luís, MA, Brazil.
Department of Chemistry, CCT, UDESC - Universidade do Estado de Santa Catarina, Joinville, SC, Brazil.
Braz Dent J. 2016 Oct-Dec;27(6):705-711. doi: 10.1590/0103-6440201601110.
To evaluate the effect of incorporating niobium phosphate bioactive glass (NbG) into commercial etch-and-rinse adhesive systems, with and without silane, on their degree of conversion (DC) (%) and microtensile bond strength (μTBS). The NbG micro-filler was added to two etch-and-rinse adhesive systems: One Step (OS) and Prime & Bond (PB) at 40% concentration. The following groups were formed: control without glass addition OS; addition of unsilanized NbG (OSNbG); addition of silanized NbG (OSNbGS); control without glass PB; addition of unsilanized NbG (PBNbG); addition of silanized NbG (PBNbGS). The DC was determined using total Fourier spectroscopy reflection (FTIR/ATR). For μTBS testing, 48 human third molars (n=8) were restored and sliced to obtain specimens (0.8 mm2) and they were tested at two different time intervals: immediately and after 6 months. The fracture mode was evaluated with a stereoscopic loupe (40×) and by scanning electron microscopy (SEM). The data were subjected to ANOVA and Tukey tests (a=0.05). NbG addition did not compromise the adhesive system DC values (p>0.05). Furthermore, the NbG added to the adhesive systems did not affect μTBS values (p>0.05). Fracture occurred predominantly at the dentin-adhesive interface. NbG bioactive glass did not affect the DC or microtensile bond strength results.
为评估将磷酸铌生物活性玻璃（NbG）添加到含或不含硅烷的市售酸蚀冲洗粘结系统中，对其转化率（DC）（%）和微拉伸粘结强度（μTBS）的影响。将NbG微填料以40%的浓度添加到两种酸蚀冲洗粘结系统中：单步粘结剂（OS）和全酸蚀粘结剂（PB）。形成了以下几组：未添加玻璃的OS对照组；添加未硅烷化NbG的组（OSNbG）；添加硅烷化NbG的组（OSNbGS）；未添加玻璃的PB对照组；添加未硅烷化NbG的组（PBNbG）；添加硅烷化NbG的组（PBNbGS）。使用全反射傅里叶变换红外光谱（FTIR/ATR）测定DC。对于μTBS测试，将48颗人类第三磨牙（n = 8）进行修复并切片以获得试样（0.8平方毫米），并在两个不同的时间间隔进行测试：即刻和6个月后。用立体放大镜（40倍）和扫描电子显微镜（SEM）评估断裂模式。数据进行方差分析和Tukey检验（α = 0.
