Abstract
Objectives
This study aims to evaluate the effect of non-thermal plasma (NTP) surface treatment in two composite inorganic fillers and evaluate their impact on the chemical-mechanical properties and bond strength ability of experimental resin cements.
Materials and methods
Ytterbium fluoride (YF) and barium silicate glass (BS) were characterized and submitted to different surface treatments: non-thermal plasma (NTP); non-thermal plasma and 3-(trimethoxysilyl) propyl methacrylate silanization; and 3-(trimethoxysilyl) propyl methacrylate silanization. Untreated fillers were used as a control. The fillers were incorporated at 65wt% concentration into light-cured experimental resin cements (50wt% BisGMA; 25wt% UDMA; 25wt% TEGDMA; 1mol% CQ). The degree of conversion, the flexural strength, and the microshear bond strength (μSBS) were evaluated to characterize developed composites.
Results
YF and BS were successfully cleaned with NTP treatment. Nor NTP neither the silanization affected the degree of conversion of resin cements. The NTP predicted an increase in YF-containing resin cements flexural strength, reducing the storage impact in these materials. NTP treatment did not affect the μSBS when applied to YF, while silanization was effective for BS-containing materials.
Conclusion
NTP treatment of inorganic particles was possible and was shown to reduce the amount of organic contamination of the particle surface. YF surface treatment with NTP can be an alternative to improve the organic/inorganic interaction in resin composites to obtain materials with better mechanical properties.
Clinical relevance
Surface cleaning with NTP may be an alternative for particle surface cleaning to enhance organic-inorganic interaction in dental composites resulting in improved mechanical strength of experimental resin cements.
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L.C: Methodology; investigation; formal analysis; data curation; writing — original draft; project administration. G.S.B: Formal analysis; writing — review and editing; visualization. F.M.C: Conceptualization; validation; resources. A.S.T: Conceptualization; methodology; resources. V.C.B.L: Conceptualization; writing — review and editing; supervision; project administration.
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Cruzetta, L., de Souza Balbinot, G., Collares, F.M. et al. Non-thermal plasma for surface treatment of inorganic fillers added to resin-based cements. Clin Oral Invest 26, 2983–2991 (2022). https://doi.org/10.1007/s00784-021-04280-1
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DOI: https://doi.org/10.1007/s00784-021-04280-1