Akbulut, Merve OzguvenOzbay, YagizErdemir, Ali2024-09-292024-09-2920211971-1425https://doi.org/10.32067/GIE.2021.35.01.19https://hdl.handle.net/20.500.14619/7276Aim: To compare the effectiveness of various irrigation activation methods applied after post space preparation on the push- out bond strengths of fiber posts to root canal dentin. Materials and Methods: Twenty maxillary central incisor teeth were prepared and root-filled. Following the preparation of the post spaces, the teeth were randomly allocated to 5 groups (n=4) based on the irrigation activation method. Post spaces were irrigated with 2.5% NaOCl and 17% EDTA and various irrigation activation techniques were applied in each group as follow. Group 1: conventional syringe irrigation (CSI); Group 2: manual-dynamic activation (MDA); Group 3: negative apical pressure (EndoVac); Group 4: passive ultrasonic irrigation (PUI) and Group 5: Er,Cr:YSGG laser. Subsequent to fiber post placement, the samples were transversally sectioned and push-out tests were applied for measurement of the bond strength of fiber posts. Results: Irrigation activation with Er,Cr:YSGG laser, EndoVac and PUI resulted higher push-out bond strength in comparison to MDA and CSI (P<.05). Conclusions: Irrigation activation with EndoVac, PUI and Er,Cr:YSGG laser provides superior bonding strength for fiber posts.eninfo:eu-repo/semantics/closedAccessbond strengthfiber postsmear layerArticle10.32067/GIE.2021.35.01.192-s2.0-851082263391271Q411935WOS:000756515600018N/A