新型四甲基丙烯酸酯单体替代UDMA对牙科树脂复合材料性能的影响,Journal of Applied Polymer Science

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新型四甲基丙烯酸酯单体替代UDMA对牙科树脂复合材料性能的影响
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-06-07 , DOI: 10.1002/app.52707
Alma Antonia Pérez‐Mondragón ₁ , Nayely Trejo‐Carbajal ₁ , Carlos E. Cuevas‐Suárez ₂ , Fernando Donado ₃ , Ana M. Herrera‐González ₁

Affiliation

本研究的目的是合成四甲基丙烯酸酯单体 (TIMA) 并评估其作为 UDMA 取代基在光聚合牙科树脂复合材料 (DRC) 配方中的作用。¹ H NMR、¹³ C NMR和FTIR光谱证实了TIMA单体的化学结构。实验复合树脂是TIMA/TEGDMA单体和硅烷化无机填料的混合物，而对照树脂是UDMA/TEGDMA和填料的混合物。研究了双键转化、聚合动力学、体积收缩、水吸附、溶解度、机械性能和细胞活力。用 TIMA 单体配制的复合树脂的抗弯强度与对照相比无统计学差异 ( p > 0.05)。然而，含有 TIMA 单体的配方表现出更高的弹性模量 (2425.37 MPa) 和较低的转化率 38.5% ( p < 0.05)。吸水率、水溶性和体积收缩率组间差异无统计学意义（p >0.05）。最后，细胞活力测试表明，用 TIMA 单体配制的实验树脂表现出接近 100% 的细胞活力。由于其特性，TIMA 单体可以被认为是牙科应用中复合树脂中 UDMA 的替代品。

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Effect of replacing UDMA by a new tetramethacrylate monomer on the properties of dental resin composite

The aim of this study is to synthesize the tetramethacrylate monomer (TIMA) and evaluate its effect as a substituent for UDMA in the formulation of photopolymerizable dental resin composites (DRC). ¹H NMR, ¹³C NMR and FTIR spectroscopies corroborate the chemical structure of the TIMA monomer. The experimental composite resin is a mixture of TIMA/TEGDMA monomers and silanized inorganic filler while, the control resin is a mixture of UDMA/TEGDMA and filler. The double-bond conversion, polymerization kinetics, volumetric shrinkage, aqueous sorption, solubility, mechanical properties, and cell viability are studied. The flexural strength of the composite resin formulated with TIMA monomer does not show statistical differences compared to the control (p > 0.05). However, formulations with the TIMA monomer presented higher elastic modulus (2425.37 MPa) and lower degree of conversion 38.5%, (p < 0.05). The differences in the water sorption, water solubility and volumetric shrinkage are not statistically significant between the groups (p > 0.05). Finally, the cell viability test show that the experimental resin formulated with TIMA monomer exhibited a cellular viability close to 100%. Due to its characteristics, TIMA monomer could be considered an alternative to UDMA in the composite resins with applications in dentistry.

更新日期：2022-06-07

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