The effects of chlorhexidine and ethanol on push-out bond strength of fiber posts

Abstract

Context:Irrigation of root canals with chlorhexidine (CHX) and ethanol is common practice to prevent root canal infection during postplacement. However, pretreatment with these solvents may interfere with the bond strength of posts.Aims:This study aimed to evaluate if root dentin pretreatment using CHX and/or ethanol influences the push-out bond strength of fiber-reinforced composite resin (FRCR) posts.Materials and Methods:Fifty space posts prepared in endodontically treated extracted human canine roots were randomly divided into five groups (n = 10) according to the dentin pretreatment: Distilled water (W); 1% CHX diacetate solution (1C); CHX diacetate + 99% ethanol (1CE); 99% ethanol (E); and 2% CHX digluconate solution (2C). After pretreatment, the adhesive system (Peak Universal Bond; Ultradent, South Jordan, UT, USA) was applied in the root dentin and the FRCR was cemented with resin cement. Then, horizontal slices of 2 mm were obtained from each root third and the push-out bond strength was assessed. Statistical analysis was done using analysis of variance (ANOVA) and Tukey's tests (P = 0.05).Results:At all thirds, 1CE and E groups presented similar push-out bond strength values (P > 0.05), which were higher than the other groups (P < 0.05). W, 1C, and 2C groups were similar (P > 0.05).Conclusion:The root dentin pretreatment with ethanol, alone or mixed with CHX diacetate increased the bond strength of FRCR luted with resin cement.

Irrigación del conducto radicular y tratamiento de superficie de pernos de fibra, previo a la cementación: revisión de tema

“…A pesar de que estadísticamente no se obtuvieron diferencias en el grupo que se empleó, únicamente el EDTA fue el que mejor resultado obtuvo (6). Al emplear CHX al 2% y etanol al 99% las dos soluciones sean solas o combinadas incrementaron la resistencia a la tracción en comparación con agua destilada (37). Mientras que en otro estudio se concluye que el sistema de irrigación final deber ser de acuerdo al tipo de sistema cementante que se va a utilizar, siendo así EDTA 18% + Hipoclorito de sodio al 5,25% cuando se va emplear un cemento autoadhesivo (7,5,38).…”

“…El Hesperidin 10% comparado con ascorbato de sodio, rivoblanica y solución salina es el que presentó mayor resistencia a la tracción (25). Para este efecto Bharti et al experimentan con proantocianidina al 6,5% y ascorbato de sodio por 5 y 10 minutos; sin embargo, en este estudio fue el último agente irrigador el que mejor se comportó en relación a la resistencia a la tracción (37).…”

Influence of sodium hypochlorite/etidronic acid combination and SmearOFF on push-out bond strength of fiber posts to root dentin

“…Microscopic evaluation of the fracture modes Samples were assessed using a stereomicroscope (Leica S4E, Leica microsystems) at 40× magnification after the push-out bond test. The failure type was classified as follows: [1] adhesive failure between the dentin and luting agent, [2] adhesive failure between the post and luting agent, [3] cohesive failure of the luting agent, [4] cohesive failure of the post, and [5] mixed type, a combination of two or more of the other types.…”

“…Endodontically treated teeth can usually be restored with intracanal posts if the remaining tooth substance cannot provide sufficient support and retention for the subsequent restoration 1,2) .…”

Post boşluğuna bağlayıcı uygulamalarının kendinden bağlanabilen rezin siman kullanılarak yapıştırılan fiber postların push-out bağlanma dayanımlarına etkileri

“…19,[30][31][32] Birçok çalışmada belirtildiği gibi uzun dönem klinik kullanım (restorasyonun yaşı) restorasyonların başarı oranlarını anlamlı oranda düşürmektedir.…”