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时间:2020-04-25
《三种不同托槽粘结强度的体外实验研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷第2期赣南医学院学报Vo134No.22014年4月JOURNALOFGANNANMEDICALUNIVERSITYA艘.2014三种不同托槽粘结强度的体外实验研究张秋芳,李志华(1.赣州市人民医院,江西赣州341000;2.南昌大学附属口腔医院,江西南昌330006)摘要:目的:评价国产陶瓷托槽的粘结性能,为临床提供参考。方法:将60颗上颌前磨牙包埋后随机分成6组,分别用光固化复合树脂粘结剂、化学固化复合树脂粘结剂粘结国产陶瓷托槽、进口陶瓷托槽、国产金属托槽,用Instron万能材料力
2、学实验机测试其抗剪切强度,同时计算牙面粘结剂的残留指数(AdhesiveRemnantIndex,ARI),进行统计处理。结果:国产陶瓷托槽与进口陶瓷托槽、国产金属托槽之间有统计学差异(P<0.05);统计结果显示2种粘结剂之间差异无统计学意义(P>0.05);各组ARI指数无显著性差异(P>0.05)。结论:国产陶瓷托槽的抗剪切强度明显低于进口陶瓷托槽和国产金属托槽;国产陶瓷托槽无论与光固化复合树脂粘结剂还是化学固化复合树脂粘结剂联合使用,都能满足临床需要;所有组别中,粘结破坏多位于托槽与粘结
3、剂界面。关键词:国产陶瓷托槽;光固化复合树脂粘结剂;化学固化复合树脂粘结剂;抗剪切强度;粘结剂残余指数中图分类号:R783.1文献标志码:A文章编号:1001—5779(2014)02—0189—03TheshearbondstrengthofthreekindsofbracketsinvitroZHANGQiu.fang,LIZhi—hua(1.GanzhouPeople~Hospital,Ganzhou,ji~g,,i341000;2.TheAffiliatedStomatologyHosp
4、italofNanchangUniversity,Nanchang,ji~xi330006)Abstract:Objective:Toinvestigatetheshearbondstrength(SBS)ofadomesticceramicbracketforclinicaluse.Meth-ods:60maxillarypremolarsweredividedinto6groupsrandomly:Thedomesticceramicbracket、theimportedceramicbra
5、cketandthedomesticmetalbracketwerecoupledwithlight-curedadhesiveandchemicallycuredadhesiveseparately.AllthesamplesweretestedbyInstronappliance.Evaluatingtheadhesiveremnantindex(ARI)byobservingthesurfaceoftheteethafterdebonding.Allstatisticswereanalys
6、ed.Results:Therewassignificantdifferencebetweenthedomesticceramicbracketandtheimportedceramicbracketorthedomesticmetalbracket(P<0.05);withoutsignificantdifferenceofARIinallgroup(P>0.05).Conclusions:TheSBSofthedomesticceramicbracketwassignificantlylow
7、erthantheSBSoftheimportedceramicbracketorthedomesticmetalbracket;ClinicallyadequateSBSwasobtainedwhenthedomes—ticceramicbracketcoupledwithlight—curedorthodonticadhesiveorchemicallycuredorthodonticadhesive.Thefailuresiteofoverwhelmingmajorityofthesamp
8、leswasthebrackets/adhesive.Keywords:domesticceramicbracket;light—curedorthodonticadhesive;chemicallycuredorthodonticadhesive;Shearbondstrength(SBS)陶瓷托槽由于美观性、耐用性和抗染色性,得到坏,无裂纹,无划痕,非四环素牙,非氟斑牙,未经化正畸患者的青睐而广泛应用于临床。如今,国产陶学处理。清洗干净后保存于蒸馏水中。国产陶瓷托瓷托槽在国内运用Et益广泛,
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