Influence of chlorhexidine application time on the bond strength between fiber posts and dentin

Doglas Cecchin; Ana Paula Farina; Mateus Giacomin; Cristina de Mattos Pimenta Vidal; Bruno Carlini-Júnior; Caio Cezar Randi Ferraz

doi:10.1016/j.joen.2014.08.019

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Influence of chlorhexidine application time on the bond strength between fiber posts and dentin

Journal article

Peer reviewed

Influence of chlorhexidine application time on the bond strength between fiber posts and dentin

Doglas Cecchin, Ana Paula Farina, Mateus Giacomin, Cristina de Mattos Pimenta Vidal, Bruno Carlini-Júnior and Caio Cezar Randi Ferraz

Journal of endodontics, Vol.40(12), pp.2045-2048

12/2014

DOI: 10.1016/j.joen.2014.08.019

PMID: 25282373

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Abstract

Introduction The aim of this study was to investigate the effects of chlorhexidine (CHX) application time on the bond strength and durability of the adhesion of fiber posts relined with resin composite to the root dentin. Methods Eighty bovine incisor roots were divided into 4 groups after root preparation: control group (irrigation with physiological solution) and experimental groups, CHX for 30 seconds, CHX for 60 seconds, and CHX for 120 seconds. Fiber posts relined with resin composite were cemented with RelyX ARC. The Scotchbond Multi-Purpose total-etching adhesive system was used in half of the samples of each group, and the Clearfil SE Bond self-etching adhesive system was used in the other half. The samples were randomly divided into 2 subgroups, 24 hours of storage and 12 months of storage. All roots were sectioned transversely, and push-out tests were performed. Bond strength means were analyzed by analysis of variance and Tukey test (α = 0.05). Failure mode was determined by examining specimen's surfaces under scanning electron microscope, and its distribution was evaluated by using χ2 test (α = 0.05). Results CHX pretreatment resulted in homogeneous bond strength values at 24 hours and 12 months of storage, irrespective of the CHX application time and adhesive system (P < .05). A significant bond strength decrease was noticed after 12 months of storage when irrigation was performed with physiological solution in the control groups (P > .05). Significant differences were observed for fracture patterns (P < .001). Conclusions The use of CHX pretreatment could preserve the bond strength of the fiber post relined with resin composite to root dentin for 12 months, irrespective of the CHX application time and adhesive system used.

Materials Testing

Root Canal Irrigants - chemistry

Bisphenol A-Glycidyl Methacrylate - chemistry

Microscopy, Electron, Scanning

Chlorhexidine - chemistry

Resin Cements - chemistry

Composite Resins - chemistry

Stress, Mechanical

Dentin - ultrastructure

Polyethylene Glycols - chemistry

Root Canal Irrigants - administration & dosage

Polymethacrylic Acids - chemistry

Random Allocation

Glass - chemistry

Post and Core Technique - instrumentation

Animals

Dental Materials - chemistry

Time Factors

Cattle

Surface Properties

Dental Bonding

Chlorhexidine - administration & dosage

Details

Title: Subtitle: Influence of chlorhexidine application time on the bond strength between fiber posts and dentin
Creators: Doglas Cecchin - Department of Restorative Dentistry, College of Dentistry, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil. Electronic address: dgscecchin@yahoo.com.br
Ana Paula Farina - Department of Restorative Dentistry, College of Dentistry, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
Mateus Giacomin - Department of Restorative Dentistry, College of Dentistry, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
Cristina de Mattos Pimenta Vidal - Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, Illinois
Bruno Carlini-Júnior - Department of Restorative Dentistry, College of Dentistry, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
Caio Cezar Randi Ferraz - Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
Resource Type: Journal article
Publication Details: Journal of endodontics, Vol.40(12), pp.2045-2048
DOI: 10.1016/j.joen.2014.08.019
PMID: 25282373
NLM abbreviation: J Endod
ISSN: 0099-2399
eISSN: 1878-3554
Publisher: Elsevier Inc; United States
Grant note: DOI: 10.13039/501100004263, name: FAPERGS, award: 2010/00100-7
Language: English
Date published: 12/2014
Academic Unit: Operative Dentistry
Record Identifier: 9984065996202771

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