Antibacterial effects of a dental adhesive incorporating a quaternary ammonium monomer against Streptococcus mutants
10.3760/cma.j.issn.1002-0098.2009.10.012
- VernacularTitle:季铵盐单体改性牙本质粘接剂对变形链球菌的抑制作用
- Author:
Fang LI
1
;
Ji-Hua CHEN
;
Sai MA
;
Ling ZHANG
;
Yu-Hong XIAO
;
Ming FANG
Author Information
1. 第四军医大学口腔医学院
- Keywords:
Quaternary amnonium compounds;
Dentin-boonding agents;
Streptococcus mutans
- From:
Chinese Journal of Stomatology
2009;44(10):621-625
- CountryChina
- Language:Chinese
-
Abstract:
Objective To incorporate an antibacterial monomer,methacryloxylethyl cetyl dimethyl ammonium chloride(DMAE-CB),into a dental adhesive,and to evaluate the antibacterial activity against Streptococcus mutans(Sm)of this DMAE-CB-incorporated adhesive after being cured.Methods DMAE-CB was incorporated into a imethacrylates-hased dental adhesive as experimental group.The adhesive without DMAE-CB served as a negative control.Thirty-nine specimens were fabricated for each group.The ffects of the cured adhesives on the growth and adherence of Sm were evaluated with growth inhibition assay and spectrophotometry respectively.The influence of aging treatment and saliva treatment on the antibacterial efficiency of the modified adhesive was evaluated.Moreover,the bacterial growth of Sm in the eluents of two different adhesives was examined.Results Compared with negative control,the cured DMAE-CB-incorporated dental adhesive exhibited inhibitory effect on the growth and adherence of Sm.The inhibition rate was 99%and the absorbance value was(0.332±0.063)for experimental group,significantly lower than that of negative control(0.434±0.093,P=0.021).Moreover,after aging treatment the DMAE-CB-incorporated adhesive could still inhibit the growth and adherence of Sm:the inhibition rate was 99%,and the absorbance value of experimental group was(0.372±0.062),significantly lower than that of negative control(0.455～±0.066,P=0.022).After saliva treatment the DMAE-CB-incorporated adhesive could still inhibit the growth and adherence of Sm;the inhibition rate was 90%,and the absorbance value of experimental group was(0.299±0.061),significantly lower than that of negative control(0.370±0.068,P=0.045).However,the eluent of DMAE-CB-incorporated adhesive didn't show inhibitory effect on the growth of Sm when compared with negative control,and the antibacterial effect and the doubling time of experimental group[(130.5±8.4)min]had no statistical difierence than negative control [(126.4±7.0)min,P=0.298].Conclusions The incorporation of DMAE-CB can render the dental adhesive with antibacterial activity after polymerization via influencing the growth and adherence of Sm.
