季铵盐单体改性窝沟封闭剂的机械性能研究  

Mechanical effects of a pit and fissure sealant incorporating a quaternary ammonium monomer

作　　者：李锋[1] 陈吉华[2] 吴丹[2] 李芳[2] 高婧[2] 方明[2] 

机构地区：[1]第四军医大学口腔医学院综合科,陕西西安710032 [2]第四军医大学口腔医学院修复科,陕西西安710032

出　　处：《临床口腔医学杂志》2011年第6期352-355,共4页Journal of Clinical Stomatology

基　　金：国家自然科学基金项目(30772444)

摘　　要：目的:将季铵盐抗菌单体甲基丙烯酰氧乙基一正十六烷基一二甲基氯化铵(DMAE-CB)添加到窝沟封闭剂中获得改性封闭剂,评价添加季铵盐单体对封闭剂机械性能的影响。方法:将DMAE-CB添加到商品窝沟封闭剂Helioseal中获得DMAE-CB改性封闭剂作为实验组;未添加抗菌单体的Helioseal作为阴性对照,具备氟释放功能的窝沟封闭剂Helioseal F作为阳性对照,研究三组封闭剂在牙釉质表面的接触角、聚合转化率、表面硬度等机械性能。结果:DMAE-CB抗菌单体的添加并没有影响窝沟封闭剂在牙釉质表面的接触角、聚合转化率和硬度(P>0.05)。结论:少量DMAE-CB抗菌单体的添加并没有对窝沟封闭剂本身的机械性能造成影响,具有临床应用的可行性。Objective：This study was attempted to incorporate an antibacterial monomer,methacryloxylethyl cetyl dimethyl ammonium chloride（DMAE-CB）,into a pit and fissure sealant,and to evaluate its mechanical properties of this DMAE-CB-incorporated sealant.Method：DMAE-CB was incorporated into a clinically used sealant,Helioseal.Helioseal without DMAE-CB served as a negative control.Helioseal F,containing a fluoride-releasing resin,was used as a positive control.The surface contact angle,degree of conversion,microhardness and microleakage were measured and compared.Result：There were no significant differences in the contact angle,degree of conversion,microhardness between the DMAE-CB-incorporated group and the negative control（P 0.05）.Conclusion：The incorporation of small amounts of the monomer DMAE-CB showed no influence on the contact angle,degree of conversion,hardness and microleakage of the parental material.

关 键 词：抗菌 窝沟封闭剂 季铵盐 接触角 转化率 硬度 

分 类 号：R781.05[医药卫生—口腔医学]