Bis-EMA/Bis-GMA ratio effects on resin-properties and impregnated fiber-bundles.

IF 4.6 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Dental Materials Pub Date : 2024-07-30 DOI:10.1016/j.dental.2024.07.001

Muhanad M Hatamleh, Adilson Yoshio Furuse

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引用次数: 0

Abstract

Objectives: To evaluate the effect of different ratios of Bis-EMA/Bis-GMA resin mixtures on the inherent viscosity and curing-related properties: including degree of cure (DC%), shrinkage strain, Knoop micro-hardness (KH) and flexural strength of resin-impregnated fiber-bundles.

Methods: Bis-EMA/Bis-GMA monomers were mixed (by weight) in the following ratios: M1 = 30 %/70 %, M2 = 50 %/50 %, M3 = 70 %/30 %, and M4 = 100 %/0 %. Standard measurements were made of refractive index, viscosity, degree of conversion, shrinkage strain and Knoop hardness (KHN). For 60 % glass fiber-bundles impregnated with 40 % resin, three-point bending test for flexural strength and shrinkage strain were measured. Data were analyzed by One-way ANOVA and Bonferroni post-hoc tests (α = 0.05).

Results: For resin mixtures, increasing Bis-EMA proportion decreased refractive index (p < 0.05), and viscosity (p < 0.05), and increased monomer conversion (DC%), shrinkage strain and KHN (p < 0.05). DC% increased after 1 h for all resin mixtures. The shrinkage strain and flexural strength of resin-impregnated fiber-bundles reduced with increased Bis-EMA.

Significance: Monomeric mixtures with highest amounts of Bis-EMA showed enhancement in several clinically-relevant properties and polymerization of respective resin-impregnated glass fibers. This makes them potential candidates for impregnating glass fibers in fiber-reinforced restorations.

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双-EMA/双-GMA 比率对树脂性能和浸渍纤维束的影响

目的评估不同比例的双-EMA/双-GMA 树脂混合物对固有粘度和固化相关性能的影响，包括固化度（DC%）、收缩应变、努氏显微硬度（KH）和树脂浸渍纤维束的抗弯强度：双-EMA/双-GMA 单体按以下比例混合（按重量计）：M1 = 30 %/70 %，M2 = 50 %/50 %，M3 = 70 %/30 %，M4 = 100 %/0%。对折射率、粘度、转换度、收缩应变和努氏硬度 (KHN) 进行了标准测量。对于浸渍了 40 % 树脂的 60 % 玻璃纤维束，测量了三点弯曲试验的抗弯强度和收缩应变。数据分析采用单因素方差分析和 Bonferroni 事后检验（α = 0.05）：结果：在树脂混合物中，增加双-EMA 的比例会降低折射率（p 显著性）：双-EMA 含量最高的单体混合物显示出了与临床相关的几种特性，并提高了各自树脂浸渍玻璃纤维的聚合度。这使它们成为在纤维增强修复体中浸渍玻璃纤维的潜在候选材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Dental Materials 工程技术-材料科学：生物材料

CiteScore

9.80

自引率

10.00%

发文量

290

审稿时长

67 days

期刊介绍： Dental Materials publishes original research, review articles, and short communications. Academy of Dental Materials members click here to register for free access to Dental Materials online. The principal aim of Dental Materials is to promote rapid communication of scientific information between academia, industry, and the dental practitioner. Original Manuscripts on clinical and laboratory research of basic and applied character which focus on the properties or performance of dental materials or the reaction of host tissues to materials are given priority publication. Other acceptable topics include application technology in clinical dentistry and dental laboratory technology. Comprehensive reviews and editorial commentaries on pertinent subjects will be considered.

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