Effect of replacing Bis-GMA with a biobased trimethacrylate on the physicochemical and mechanical properties of experimental resin composites.

Autor: Moreira MM; Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, 900 Joaquim Sá St, Fortaleza, Ceará,, 60.135-218, Brazil. madiana.moreira@facpp.edu.br.; Paulo Picanço School of Dentistry, 900 Joaquim Sá St, Fortaleza, Ceará, Brazil. madiana.moreira@facpp.edu.br., da Silva AL; Paulo Picanço School of Dentistry, 900 Joaquim Sá St, Fortaleza, Ceará, Brazil., Pereira RCS; Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil., da Silva LRR; Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.; Department of Metallurgical and Materials Engineerng, Federal University of Ceará, Fortaleza, Ceará, Brazil., Feitosa VP; Department of Operative Dentistry, University of Iowa College of Dentistry, Iowa City, IA, USA., Lomonaco D; Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, 900 Joaquim Sá St, Fortaleza, Ceará,, 60.135-218, Brazil.; Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2024 Oct 08; Vol. 28 (11), pp. 578. Date of Electronic Publication: 2024 Oct 08.
DOI: 10.1007/s00784-024-05959-x
Abstrakt: Objectives: To analyze the incorporation of cardanol trimethacrylate monomer (CTMA), derived from the cashew nut shell liquid, as a substitute for Bis-GMA in acrylic resins formulations and its effect on experimental resin composites' physicochemical and mechanical properties.
Materials and Methods: The intermediary cardanol epoxy was synthesized via cardanol epoxidation, followed by the synthesis of CTMA through methacrylic anhydride solvent-free esterification. Experimental resin composites were formulated with an organic matrix composed of Bis-GMA/TEGDMA (50/50 wt %) (control). CTMA was gradually added to replace different proportions of Bis-GMA: 10 wt % (CTMA-10), 20 wt % (CTMA-20), 40 wt % (CTMA-40), and 50 wt % (CTMA-50). The composites were characterized by degree of conversion, water sorption and solubility, viscosity, thermogravimetric analysis, dynamic mechanical analysis, flexural strength and elastic modulus. Data were analyzed with one-way ANOVA and Tukey's post-hoc test (α = 0.05), except for water sorption data, which were analyzed by Kruskall-Wallis and Dunn's method.
Results: CTMA-based and control composites did not show statistically significant differences regarding degree of conversion, flexural strength and elastic modulus. CTMA reduced the viscosity and solubility compared to the Bis-GMA-based composite. The CTMA-40 and CTMA-50 exhibited significantly lower water sorption compared to the control. Also, acceptable thermal stability and viscoelastic properties were obtained for safe use in the oral cavity.
Conclusions: Incorporating CTMA into composites resulted in similar chemical and mechanical properties compared to Bis-GMA-based material while reducing viscosity, water sorption and solubility.
Clinical Relevance: CTMA could be used as a trimethacrylate monomer replacing Bis-GMA in resin composites, thereby minimizing BPA exposure.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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