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Effect of conditioning agents combined with two adhesive resin cements on Micro-Tensile Bond Strength to polymeric CAD/CAM materials


Hampe, Rüdiger; Keller, Manuel; Roos, Malgorzata; Herrero, Pablo; Stawarczyk, Bogna (2018). Effect of conditioning agents combined with two adhesive resin cements on Micro-Tensile Bond Strength to polymeric CAD/CAM materials. International Journal of Adhesion and Adhesives, 85:100-105.

Abstract

Purpose: To test the µ-tensile bond strength (µTBS) between resin composite cements and non-/conditioned CAD/CAM polymers.
Methods: PMMA (artBlock Temp) and exp. resin composite CAD/CAM blocks were fabricated, polished and air-abraded. The specimens were conditioned: i. “Monobond Plus/Heliobond”, ii. “visio.link”, iii. “Ambarino P60”, iv. “exp. VP connect”, v. non-conditioned as control group (CG) and luted with a self-adhesive resin composite cement Clearfil SA Cement or an adhesive resin composite cement Variolink II. The blocks were cut into 10 specimens and stored for 24 h at 37 °C water. Half of specimens were thermal cycled (5000×, 5 °C/55 °C). µTBS with failure types were assessed. Data was analysed using 4-way ANOVA, Kruskal-Wallis, Mann-Whitney U-, and Chi²-test (α = 0.05).
Results: The highest influence on µTBS was exerted by conditioning method (partial eta squared ηP2 = 0.715, p < 0.001), followed by aging level (ηP2 = 0.260, p < 0.001), cement (ηP2 = 0.196, p < 0.001) and substrate material (ηP2 = 0.135, p < 0.001). Visio.link showed the highest µTBS, regardless of the substrate material and aging level. Adhesive resin composite cement groups in combination with visio.link and Ambarino P60 showed no impact of aging. Remaining groups presented a negative impact of aging on µTBS. No impact of cements was observed for PMMA without/conditioning using visio.link and composite conditioned using VP connect. Specimens luted using self-adhesive resin composite cement showed higher µTBS than specimens luted using adhesive resin composite cement. Visio.link and VP connect combined with self-adhesive resin composite cement showed higher µTBS on PMMA than on exp. resin composite. No impact of substrate was found for non-aged Monobond Plus/Heliobond in combination with self-adhesive resin composite cement. The remaining groups showed higher µTBS values on experimental resin composite substrate.
Conclusion: For long-term bonding of CAD/CAM polymers an adequate pretreatment method is necessary.

Abstract

Purpose: To test the µ-tensile bond strength (µTBS) between resin composite cements and non-/conditioned CAD/CAM polymers.
Methods: PMMA (artBlock Temp) and exp. resin composite CAD/CAM blocks were fabricated, polished and air-abraded. The specimens were conditioned: i. “Monobond Plus/Heliobond”, ii. “visio.link”, iii. “Ambarino P60”, iv. “exp. VP connect”, v. non-conditioned as control group (CG) and luted with a self-adhesive resin composite cement Clearfil SA Cement or an adhesive resin composite cement Variolink II. The blocks were cut into 10 specimens and stored for 24 h at 37 °C water. Half of specimens were thermal cycled (5000×, 5 °C/55 °C). µTBS with failure types were assessed. Data was analysed using 4-way ANOVA, Kruskal-Wallis, Mann-Whitney U-, and Chi²-test (α = 0.05).
Results: The highest influence on µTBS was exerted by conditioning method (partial eta squared ηP2 = 0.715, p < 0.001), followed by aging level (ηP2 = 0.260, p < 0.001), cement (ηP2 = 0.196, p < 0.001) and substrate material (ηP2 = 0.135, p < 0.001). Visio.link showed the highest µTBS, regardless of the substrate material and aging level. Adhesive resin composite cement groups in combination with visio.link and Ambarino P60 showed no impact of aging. Remaining groups presented a negative impact of aging on µTBS. No impact of cements was observed for PMMA without/conditioning using visio.link and composite conditioned using VP connect. Specimens luted using self-adhesive resin composite cement showed higher µTBS than specimens luted using adhesive resin composite cement. Visio.link and VP connect combined with self-adhesive resin composite cement showed higher µTBS on PMMA than on exp. resin composite. No impact of substrate was found for non-aged Monobond Plus/Heliobond in combination with self-adhesive resin composite cement. The remaining groups showed higher µTBS values on experimental resin composite substrate.
Conclusion: For long-term bonding of CAD/CAM polymers an adequate pretreatment method is necessary.

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Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Epidemiology, Biostatistics and Prevention Institute (EBPI)
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:General Chemical Engineering, Polymers and Plastics, Biomaterials
Language:English
Date:1 October 2018
Deposited On:04 Jan 2019 14:30
Last Modified:04 Jan 2019 14:31
Publisher:Elsevier
ISSN:0143-7496
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.ijadhadh.2018.04.009

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