根管冲洗液的作用.pdfVIP

Acta Odontologica Scandinavica. 2014; 72: 783–787 ORIGINAL ARTICLE Effects of different irrigating solutions and disinfection methods on push-out bond strengths of fiber posts 1 2 1 1 HUSEYIN ERTAS , EVREN OK , BANU UYSAL HAKAN ARSLAN 1Department of Endodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey, and 2Department of Endodontics, Faculty of Dentistry, Sifa University, Izmir, Turkey Abstract Objective. The aim of this study was to evaluate the effects of various irrigating solutions and photoactivated disinfection (PAD) on the push-out bond strengths of fiber posts to root dentin. Materials and methods. Thirty-two human teeth were divided into eight groups, as follows: (1) irrigation with physiologic saline (control), (2) NaOCl irrigation, (3) chlorhexidine (CHX) irrigation, (4) ethanol (EtOH) irrigation, (5) NaOCl followed by 17% EDTA irrigation, (6) NaOCl-EDTA supplemented with CHX irrigation, (7) NaOCl-EDTA supplemented with EtOH irrigation and (8) NaOCl-EDTA irrigation supplemented with PAD. After the posts were cemented, the roots were transversally sectioned to obtain four slices (1 mm thick) (n = 16). Push-out tests were conducted by applying a load at 0.5 mm/min, types of fracture failures were recorded and data were analyzed with one-way ANOVA and Tukey post-hoc tests (p = 0.05). Results. Push-out bond strength was significantly affected by the type of irrigating solution and the disinfection protocol (p 0.05). The bond strength of the EtOH, NaOCl and NaOCl-EDTA-CHX irrigated groups was significantly higher than that of the other groups. The highest bond strength was observed in the EtOH irrigated group and the lowest was the NaOCl-EDTA irrigated group. Conclusions. Irrigation with NaOCl and EDTA combined ca