目的:评价用不同方法处理使用氧化锌丁香油糊剂(zinc oxide-eugenol,ZOE)的牙本质表面对牙本质粘接系统微拉伸强度的影响。方法:选择因正畸拔除的完整、无龋前磨牙。用慢速锯去除面牙釉质,对照牙表面不使用ZOE;实验牙在暴露的牙本质...目的:评价用不同方法处理使用氧化锌丁香油糊剂(zinc oxide-eugenol,ZOE)的牙本质表面对牙本质粘接系统微拉伸强度的影响。方法:选择因正畸拔除的完整、无龋前磨牙。用慢速锯去除面牙釉质,对照牙表面不使用ZOE;实验牙在暴露的牙本质表面涂ZOE。1周后,实验试件分别用方法a:机械去除;方法b:超声波清洁+酒精擦拭;方法c:超声波清洁+浮石打磨,3种不同方法去除ZOE。再分别使用2种牙本质粘接系统,用微拉伸法测试粘接强度。结果:单因素方差分析提示不同处理ZOE的方法对牙本质粘接系统的微拉伸粘接强度有显著影响(P<0.05),使用方法a后微拉伸粘接强度仍有显著下降,有统计学意义(P<0.05)。使用方法b和方法c后对微拉伸粘接强度无显著影响(P>0.05)。结论:使用超声波清洁+酒精擦拭或者超声波清洁+浮石打磨能显著降低ZOE对自酸蚀系统Clearfil SE Bond和iBond粘接强度的不利影响。展开更多
Two new compounds are synthesized from the intermediate 2-(4-chlorphenyl)-3-methylbutanoyl chloride with cyclohexanol and 4-ally-2-methoxyphenol(eugenol),respectively.All compounds synthesized are identified by UV,1HN...Two new compounds are synthesized from the intermediate 2-(4-chlorphenyl)-3-methylbutanoyl chloride with cyclohexanol and 4-ally-2-methoxyphenol(eugenol),respectively.All compounds synthesized are identified by UV,1HNMR,MS.Preliminary bioassay shows that the compound(Ⅲ) has consierable acaridcidal activities.展开更多
A novel pyrethroid——4-allyl-2-methoxyphenyl-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate is synthesized and its structure is confirmed on the basis of UV,MS,1H NMR and elemental analysis.The bioactivi...A novel pyrethroid——4-allyl-2-methoxyphenyl-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate is synthesized and its structure is confirmed on the basis of UV,MS,1H NMR and elemental analysis.The bioactivity is tested primarily with mosquito and the relation to structure is discussed.展开更多
文摘目的:评价用不同方法处理使用氧化锌丁香油糊剂(zinc oxide-eugenol,ZOE)的牙本质表面对牙本质粘接系统微拉伸强度的影响。方法:选择因正畸拔除的完整、无龋前磨牙。用慢速锯去除面牙釉质,对照牙表面不使用ZOE;实验牙在暴露的牙本质表面涂ZOE。1周后,实验试件分别用方法a:机械去除;方法b:超声波清洁+酒精擦拭;方法c:超声波清洁+浮石打磨,3种不同方法去除ZOE。再分别使用2种牙本质粘接系统,用微拉伸法测试粘接强度。结果:单因素方差分析提示不同处理ZOE的方法对牙本质粘接系统的微拉伸粘接强度有显著影响(P<0.05),使用方法a后微拉伸粘接强度仍有显著下降,有统计学意义(P<0.05)。使用方法b和方法c后对微拉伸粘接强度无显著影响(P>0.05)。结论:使用超声波清洁+酒精擦拭或者超声波清洁+浮石打磨能显著降低ZOE对自酸蚀系统Clearfil SE Bond和iBond粘接强度的不利影响。
文摘Two new compounds are synthesized from the intermediate 2-(4-chlorphenyl)-3-methylbutanoyl chloride with cyclohexanol and 4-ally-2-methoxyphenol(eugenol),respectively.All compounds synthesized are identified by UV,1HNMR,MS.Preliminary bioassay shows that the compound(Ⅲ) has consierable acaridcidal activities.
文摘A novel pyrethroid——4-allyl-2-methoxyphenyl-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate is synthesized and its structure is confirmed on the basis of UV,MS,1H NMR and elemental analysis.The bioactivity is tested primarily with mosquito and the relation to structure is discussed.
