Subsequent application of bonding agents to a one-step self-etch adhesive - Its effect with/without previous light-curing
Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
31542248
DOI
10.1016/j.dental.2019.08.108
PII: S0109-5641(19)30839-5
Knihovny.cz E-zdroje
- Klíčová slova
- Adhesion, Bio-active, Degree of conversion, Failure mode, Micro-tensile bond strength, One-step, Self-etch adhesive systems, Thermal cycling, Two-step,
- MeSH
- dentin MeSH
- dentinová adheziva MeSH
- lidé MeSH
- pevnost v tahu MeSH
- pryskyřičné cementy MeSH
- složené pryskyřice MeSH
- stomatologické polymerizační lampy * MeSH
- testování materiálů MeSH
- vazba zubní * MeSH
- zubní cementy MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- dentinová adheziva MeSH
- pryskyřičné cementy MeSH
- složené pryskyřice MeSH
- zubní cementy MeSH
OBJECTIVE: The influence of light-curing of a one-step self-etch adhesive (1-SEA) prior to the application of different bonding agents (BA) on the micro-tensile bond strength (μTBS) to dentin after 24h and thermal cycling was investigated. Additionally, the degree of conversion was evaluated using Fourier-transform infrared spectroscopy. METHODS: Three ion-releasing BAs, BZF-21 (experimental BA), Clearfil SE Protect (CSP), and FL-Bond II (FL-II), were applied subsequently to G-Premio Bond (1-SEA, GPB). Prior to their application, GPB was either light-cured (10s, 1000mW/cm2) or remained uncured. GPB was used as a control and Clearfil SE Bond 2 (CSE2) as a gold-standard 2-step reference. After resin-composite build-up and 24-h water storage (24h), half of the specimens were subjected to 15,000 thermal cycles (TC). Then, the specimens were sectioned into beams and tested under tensile load (1mm/min). The acquired data were analyzed using a 2-way ANOVA and Student's t-test with Bonferroni correction, and a two-parameter Weibull analysis, α=0.05. RESULTS: The μTBS of GPB increased significantly in the uncured groups with BZF-21 (24h: p<0.001, TC: p<0.001) and CSP (24h: p=0.039, TC: p<0.001), and in the light-cured group with CSP after TC (p=0.044). The groups with FL-II were not significantly different from GPB (p=1). No significant difference was found between CSE2 and the uncured groups GPB+BZF-21 (24h: p=1, TC: p=0.452) and GPB+CSP (24h: p=0.671, TC: p=0.566). SIGNIFICANCE: BZF-21 and CSP improved the μTBS of GPB to dentin both immediately and after TC. Higher μTBSs were obtained when GPB remained uncured prior to BA application.
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