Journal article
Bonding ability of experimental resin-based materials containing (ion-releasing)-microfillers applied on water-wet or ethanol-wet root canal dentine
International journal of adhesion and adhesives, Vol.54, pp.214-223
10/01/2014
DOI: 10.1016/j.ijadhadh.2014.06.007
Abstract
The objective of this study was to evaluate the bonding performance of model resin-based adhesives doped with bioactive glass or calcium-silicate modified dicalcium-phosphatedihydrate microfillers to root canal wet-dentine with water or ethanol. The experimental resin was prepared by using urethane-dimethacrylate (UDMA), triethylene-glycol-dimethacrylate (TEGDMA) and hydroxyethyl-methacrylate (HEMA). This resin blend was mixed with 50 wt% ethanol to create the experimental primers. Bioactive glass 45S5 (BAG) or calcium-silicate modified dicalcium-phosphate dihydrate (DCPD) microfillers were mixed at 40 wt% to the blend. The bonding performance to root canal was assessed by push-out bond strength, SEM analysis of fractures, and interfacial confocal microscopy after filling the canals with the core composite Bis-Core (Bisco). Three-way ANOVA (bonding technique, adhesive resin and dentine area) and Student-Newman-Keuls post-hoc were used to statistically compare the results (alpha=5%). Filler-free adhesive applied on water-wet dentine showed lower bond strength than the same resin applied on ethanol-wet dentine (p < 0.05). Only the former group showed predominantly adhesive fractures whereas all other treatments led mostly to mixed failures. The presence of both fillers did not influence the push-out bond strength using ethanol-wet approach (p > 0.05) but did improve using the water-wet strategy. BAG and DCPD also promoted mineral deposition and tubular occlusion in the well-hybridised fractured root surfaces especially using the ethanol-wet technique. The confocal interfacial analysis showed impaired resin infiltration only using the filler-free resin on water-wet dentine. As a conclusion, bioactive glass and DCPD micro-fillers as well as the ethanol-wet bonding were able to improve the adhesion of etch-and-rinse adhesives to radicular dentine. (C) 2014 Published by Elsevier Ltd.
Details
- Title: Subtitle
- Bonding ability of experimental resin-based materials containing (ion-releasing)-microfillers applied on water-wet or ethanol-wet root canal dentine
- Creators
- A. Zavattini - University of Rome Tor VergataV. P. Feitosa - Universidade Federal do CearáF. Mannocci - King's College LondonF. Foschi - King's College LondonA. Babbar - King's College LondonA. Luzi - Universidad Cardenal Herrera CEUL. Ottria - University of Rome Tor VergataF. Mangani - University of Rome Tor VergataIgnazia Casula - University of BresciaS. Sauro - Universidad Cardenal Herrera CEU
- Resource Type
- Journal article
- Publication Details
- International journal of adhesion and adhesives, Vol.54, pp.214-223
- Publisher
- Elsevier
- DOI
- 10.1016/j.ijadhadh.2014.06.007
- ISSN
- 0143-7496
- eISSN
- 1879-0127
- Number of pages
- 10
- Language
- English
- Date published
- 10/01/2014
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654466402771
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