中文摘要：

目的：评价添加季铵盐型抗菌单体的实验性树脂基粘接剂浸提液的抗菌效率。方法：制备含不同质量分数抗菌单体的实验性粘接样本的浸提液,采用光密度法比较各组浸提液对变形链球菌的抗菌活性。结果：各组1 h、1 w及1个月浸提液Δ光密度值之间无显著性差异（P〉0.05）,相同时间浸提液组间两两比较亦无统计学差异（P〉0.05）。结论：实验性抗菌粘接样本1 h、1 w及1个月浸提液对变形链球菌生长均无显著影响,间接说明浸提过程中无抗菌性成分自实验性粘接试样中析出。

英文摘要：

Objective： To evaluate the antibacterial efficiency of the extracts from an experimental rasin - based adhesive incorporating quaternary ammonium salt monomer on streptococcus mutants. Methods： The extracts from experimental adhesive samples with different concentrations of antibacterial monomer were prepared,and densitometry was used to compare the antibacterial activity of the extracts in different groups to streptococcus mutants. Results ： Aphotodensity of the extracts from all groups was not significantly different after treatment for 1 h, 1 w and 1 month. Furthermore,it also had no significant differences at same time points among different groups. Conclusion：The extracts from experimental adhesive samples appear to have no influence on the growth of streptococcus mutants after treatment for 1 h, 1 w and 1 month, which illustrates that the antibacterial ingredient does not leach out from experimental adhesive samples.