Analysis of different endodontic sealers and strategies of root canal irrigation on the bond strength of fiber posts
- VernacularTitle:不同根管封闭剂及清洗方法对纤维桩粘接强度的影响
- Author:
Shujin ZHU
1
;
Cuiling LIU
;
Zheng ZHENG
;
Liyuan YANG
;
Xu GAO
Author Information
- Keywords: endodontic sealer; root canal irrigation; fiber post; bond strength
- From: West China Journal of Stomatology 2015;(3):311-314
- CountryChina
- Language:Chinese
- Abstract: ObjectiveTo?evaluate?the?influence?of?eugenol-containing?and?resin-containing?endodontic?sealers?on?the?bond?strength?of?fiber?posts?using?different?strategies?of?root?canal?irrigation.?Methods???Forty-eight?mandibular?premolars?were?endodontically?treated.?The?specimens?were?randomly?assigned?into?two?groups?according?to?different?endodontic?sealers.?Group?A?used?Endofil?(eugenol-containing?endodontic?sealer),?and?group?B?used?AH-plus?(resin-containing?endodontic?sealer).?After?post?space?preparation,?each?group?was?randomly?assigned?into?three?subgroups?according?to?the?strategies?of?root?canal?irrigation?(eight?premolars?in?each?subgroup).?Group?A1?and?B1:?0.9%NaCl?irrigation;?Group?A2?and?B2:?17%?ethylene?dia-mine?tetraacetic?acid?(EDTA)+5.25%NaClO+0.9%NaCl?irrigation;?Group?A3?and?B3:?ultrasonic?agitation?associated?with?1 7%EDTA+5.25%NaClO+0.9%NaCl.?One?week?after?the?cementation?of?fiber?posts?using?RelyXTM?Unicem,?a?push-out?test?was?performed?to?measure?the?bond?strength?of?the?posts.?The?microstructure?of?the?root?canal?surface?was?examined?under?scanning?electron?microscope?(SEM).?Results???The?bond?strengths?of?the?six?groups?were?as?follows:?A1?(7.96±2.23)?MPa,?A2?(9.95±2.89)?MPa,?A3?(18.88±3.69)?MPa,?B1?(11.41±3.71)?MPa,?B2?(14.00±4.04)?MPa,?and?B3?(19.14±3.27)?MPa.?Statistical?analysis?revealed?a?significant?interaction?between?the?dif-ferent?endodontic?sealers?and?the?strategies?of?root?canal?irrigation?(P<0.05).?Lower?bond?strength?was?found?in?group?A1?but?not?in?group?B1?(P<0.05),?and?the?same?result?was?revealed?when?comparing?group?A2?and?B2.?No?significant?diffe-rence?was?observed?between?group?A3?and?B3?(P>0.05).?SEM?showed?that?the?root?canal?in?group?A3?and?B3?achieved?the?cleanest?surface?with?nearly?all?dentine?tubules?opened.?Conclusion???The?eugenol-containing?endodontic?sealer?can?impair?the?bond?strength?of?fiber?posts?compared?with?the?resin-containing?sealer?when?the?root?canal?is?irrigated?by?0.9%?NaCl?or?17%EDTA+5.25%NaClO+0.9%NaCl.?No?difference?was?observed?between?the?two?sealers?when?using?17%EDTA+5.25%?NaClO+0.9%NaCl?combined?with?ultrasonic?irrigation.
