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1、第34卷第2期贛南醫(yī)學(xué)院學(xué)報Vo134No.22014年4月JOURNALOFGANNANMEDICALUNIVERSITYA艘.2014三種不同托槽粘結(jié)強度的體外實驗研究張秋芳,李志華(1.贛州市人民醫(yī)院,江西贛州341000;2.南昌大學(xué)附屬口腔醫(yī)院,江西南昌330006)摘要:目的:評價國產(chǎn)陶瓷托槽的粘結(jié)性能,為臨床提供參考。方法:將60顆上頜前磨牙包埋后隨機分成6組,分別用光固化復(fù)合樹脂粘結(jié)劑、化學(xué)固化復(fù)合樹脂粘結(jié)劑粘結(jié)國產(chǎn)陶瓷托槽、進口陶瓷托槽、國產(chǎn)金屬托槽,用Instron萬能材料力
2、學(xué)實驗機測試其抗剪切強度,同時計算牙面粘結(jié)劑的殘留指數(shù)(AdhesiveRemnantIndex,ARI),進行統(tǒng)計處理。結(jié)果:國產(chǎn)陶瓷托槽與進口陶瓷托槽、國產(chǎn)金屬托槽之間有統(tǒng)計學(xué)差異(P<0.05);統(tǒng)計結(jié)果顯示2種粘結(jié)劑之間差異無統(tǒng)計學(xué)意義(P>0.05);各組ARI指數(shù)無顯著性差異(P>0.05)。結(jié)論:國產(chǎn)陶瓷托槽的抗剪切強度明顯低于進口陶瓷托槽和國產(chǎn)金屬托槽;國產(chǎn)陶瓷托槽無論與光固化復(fù)合樹脂粘結(jié)劑還是化學(xué)固化復(fù)合樹脂粘結(jié)劑聯(lián)合使用,都能滿足臨床需要;所有組別中,粘結(jié)破壞多位于托槽與粘結(jié)
3、劑界面。關(guān)鍵詞:國產(chǎn)陶瓷托槽;光固化復(fù)合樹脂粘結(jié)劑;化學(xué)固化復(fù)合樹脂粘結(jié)劑;抗剪切強度;粘結(jié)劑殘余指數(shù)中圖分類號:R783.1文獻標(biāo)志碼:A文章編號: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)陶瓷托槽由于美觀性、耐用性和抗染色性,得到壞,無裂紋,無劃痕,非四環(huán)素牙,非氟斑牙,未經(jīng)化正畸患者的青睞而廣泛應(yīng)用于臨床。如今,國產(chǎn)陶學(xué)處理。清洗干凈后保存于蒸餾水中。國產(chǎn)陶瓷托瓷托槽在國內(nèi)運用Et益廣泛,