中文摘要：

将质量浓度为400ug／mL的EGCG及EGCG-3Me添加到全酸蚀粘接剂single Bond2（SB2）中，制备改性粘接NE-SB2及E3-SB2，SB2为对照组。激光共聚焦显微镜和分光光度法检测改性粘接剂抗粪肠球菌的性能；微拉曼光谱仪检测粘接剂双键转化率；制各纤维桩粘接试件，用于即刻和老化后的微推出实验。结果表明，改性粘接剂可以抑制粪肠球菌生物膜形成，且EGCG-3Me作用更显著；改性粘接剂与SB2的双键转化率和即刻微推出粘接强度差异无显著性（P〉0．05）；老化后改性粘接剂的微推出粘按强度显著高于SB2（P〈0．05）。

英文摘要：

Epigallocatechin-3-gallate （EGCG） and epigallocatechin-3-O-（3-O-methyl）-gallate （ EGCG-3Me ） was incorporated into the total-etch adhesive of Single Bond 2 separately to obtain two modified adhesives E-SB2 and E3- SB2 with the concentration of 400 μg/mL of EGCG and EGCG-3Me respectively, The confocal laser scanning microscopy （CLSM） and the ultraviolet spectrophotometry were used to evaluate the anti-bacterial effect of modified adhesives. The micro-Raman spectrum was used to test the degree of double bond conversion （DC） of adhesives. The push-out bond strength test was conducted to test the immediate bonding strength and the bonding strength after thermocycling. The results demonstrated that E-SB2 and E3-SB2 both showed inhibiting effect to the growth and activity of E.faecalis, while E3-SB2 performed stronger inhibiting effect. The DC and immediate push-out bonding strength of SB2 were not decreased with the incorporation of EGCG or EGCG-3Me （P〉0.05）. E-SB2 and E3-SB2 showed significantly higher push-out bonding strengths than that of SB2 （P 〈 0.05）.