Journal article
The effect of dentine pre-treatment using bioglass and/or polyacrylic acid on the interfacial characteristics of resin-modified glass ionomer cements
Journal of dentistry, Vol.73, pp.32-39
06/01/2018
DOI: 10.1016/j.jdent.2018.03.014
PMID: 29609016
Abstract
Objective: To evaluate the effect of load-cycle aging and/or 6 months artificial saliva (AS) storage on bond durability and interfacial ultramorphology of resin-modified glass ionomer cement (RMGIC) applied onto dentine air-abraded using Bioglass 45S5 (BAG) with/without polyacrylic acid (PAA) conditioning.
Methods: RMGIC (Ionolux, VOCO) was applied onto human dentine specimens prepared with silicon-carbide abrasive paper or air-abraded with BAG with or without the use of PAA conditioning. Half of bonded-teeth were submitted to load cycling (150,000 cycles) and half immersed in deionised water for 24h. They were cut into matchsticks and submitted immediately to microtensile bond strength (mu TBS)testing or 6 months in AS immersion and subsequently pTBS tested. Results were analysed statistically by two-way ANOVA and Student-Newman-Keuls test (alpha = 0.05). Fractographic analysis was performed using FE-SEM, while further RMGIC-bonded specimens were surveyed for interfacial ultramorphology characterisation (dye-assisted nanoleakage) using confocal microscopy.
Results: RMGIC applied onto dentine air-abraded with BAG regardless PAA showed no significant mu TBS reduction after 6 months of AS storage and/or load cycling (p > 0.05). RMGIC-dentine interface showed no sign of degradation/nanoleakage after both aging regimens. Conversely, interfaces created in PAA-conditioned SiCabraded specimens showed significant reduction in mu TBS (p < 0.05) after 6 months of storage and/or load cycling with evident porosities within bonding interface.
Conclusions: Dentine pre-treatment using BAG air-abrasion might be a suitable strategy to enhance the bonding performance and durability of RMGIC applied to dentine. The use of PAA conditioner in smear layer-covered dentine may increase the risk of degradation at the bonding interface.
Clinical significance: A combined dentine pre-treatment using bioglass followed by PAA may increase the bond strength and maintain it stable over time. Conversely, the use of PAA conditioning alone may offer no significant contribute to the immediate and prolonged bonding performance.
Details
- Title: Subtitle
- The effect of dentine pre-treatment using bioglass and/or polyacrylic acid on the interfacial characteristics of resin-modified glass ionomer cements
- Creators
- Salvatore Sauro - Universidad Cardenal Herrera CEUTimothy Watson - King's College LondonAgustin Pascual Moscardo - Univ Valencia, Dept Odontol, Valencia, SpainArlinda Luzi - Universidad Cardenal Herrera CEUVictor Pinheiro Feitosa - Paulo Picanco Sch Dent, Fortaleza, Ceara, BrazilAvijit Banerjee - Kings Coll London, Kings Coll London Dent Inst, Tissue Engn & Biophoton Res Div, London, England
- Resource Type
- Journal article
- Publication Details
- Journal of dentistry, Vol.73, pp.32-39
- DOI
- 10.1016/j.jdent.2018.03.014
- PMID
- 29609016
- NLM abbreviation
- J Dent
- ISSN
- 0300-5712
- eISSN
- 1879-176X
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- research grant INDI - "Programa de Consolidacion de Indicadores: Fomento Plan Estatal CEU-UCH"
- Language
- English
- Date published
- 06/01/2018
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654467602771
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