Evaluation of alternative monomers to HEMA for dental applications

Dental Materials : Official Publication of the Academy of Dental Materials
Sven TauscherNorbert Moszner

Abstract

The objective of this work is to find potential alternative monomers to 2-hydroxyethyl methacrylate (HEMA) for dental materials (self-etch adhesives and luting composites). Monomers 1-9 were tested as potential HEMA substitutes. Methacrylates 4, 5 and 6 and (N-methyl)acrylamides 7-9 were synthesized and characterized by 1H NMR spectroscopy. The reactivity of each monomer was studied using photo-DSC. Mixtures of monomers 1-9 with the urethane dimethacrylate UDMA (1/1: wt/wt) were formulated and cured. The water sorption and solubility of these materials were determined according to ISO 4049. Luting composites based on monomers 1-9 or on HEMA were formulated. The flexural strength and modulus of elasticity were measured using a three-point bending setup, according to ISO 4049. Self-etch adhesives containing monomers 1-9 or HEMA were prepared and used to mediate a bond between the dental composite Tetric EvoCeram® and both dentin and enamel. The shear bond strength (SBS) was measured using a Zwick universal testing machine. Polymerizable diols 3 and 4 as well as (N-methyl)acrylamides 7-9 were found to be significantly more reactive than HEMA. Resins based on the hydrophilic monomers 3, 7 and 8 exhibited a significantly higher wate...Continue Reading

Citations

Nov 23, 2018·Drug Delivery and Translational Research·Suping WangHockin H K Xu
Jan 21, 2021·Chemical Society Reviews·Jinhua Li, Martin Pumera
Mar 4, 2019·Dental Materials : Official Publication of the Academy of Dental Materials·Ana P FugolinCarmem S Pfeifer
Sep 12, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Stéfani Becker RodriguesFabrício Mezzomo Collares
Oct 11, 2019·Journal of Dentistry·Patricia FrankenVicente Castelo Branco Leitune

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