Tapety Celiane Mc, Carneiro Yvina Kp, Chagas Yarina M, Souza Lidiane C, Souza Nayara de O, Valadas Lidia Ar
Universidade Federal do Ceará, Faculdade de Odontologia, Sobral, Brasil.
Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Programa de Pós-Graduação em Odontologia, Fortaleza, Brasil.
Acta Odontol Latinoam. 2023 Aug 31;36(2):112-119. doi: 10.54589/aol.36/2/112.
Advanced Polymerization System (APS) technology in a commercial composite resin enables reduction of the concentration of camphorquinone without altering composite physicochemical properties.
The aim of this study was to evaluate the degree of conversion and mechanical properties of a commercial composite with an advanced polymerization system (APS) and compare it to other composites that do not use this system.
Five groups were analyzed. Group 1 (VT: Vittra APS - FGM); G2 (AU: Aura - SDI); G3 (ES: Quick Sigma Stelite - TOKOYAMA); G4 (FZ: Filtek Z350 XT - 3M ESPE); G5 (OP: Opallis -FGM). Degree of conversion (DC, n=3) was analyzed immediately and after 24h by analysis with FTIR spectroscopy. For Knoop hardness (KHN, n=3), 5 indentations were made at the top and bottom of specimens 2 mm thick. Flexural strength (FS, n=10) was determined by the three-point method in a universal testing machine. Polymerization stress (PS) was determined by light-curing the material (1.0 mm high) between polymethylmethacrylate rods in a universal testing machine. Light curing was performed with a Valo Cordless LED (1,000 mW/cm2 x 20 s: 20J). The results were analyzed using ANOVA and complemented by Tukey's test (α=0.05).
The highest DC values (immediate and 24h after) were observed for VT and OP resins, followed by FZ, AU and ES. FZ (top and bottom) had the highest KHN values, similar to VT top. AU, ES, OP and VT had statistically different KHN between their top and bottom surfaces. The highest RF values were observed for FZ, followed by OP/VT, ES and AU. The highest TP values were observed for FZ, OP and VT.
The Vittra APS resin with a new polymerization system presents satisfactory performance for the parameters evaluated.
商业复合树脂中的先进聚合系统（APS）技术能够在不改变复合树脂物理化学性质的情况下降低樟脑醌的浓度。
本研究的目的是评估一种采用先进聚合系统（APS）的商业复合树脂的转化率和力学性能，并将其与其他未使用该系统的复合树脂进行比较。
分析了五组。第1组（VT：Vittra APS - FGM）；第2组（AU：Aura - SDI）；第3组（ES：Quick Sigma Stelite - 东洋）；第4组（FZ：Filtek Z350 XT - 3M ESPE）；第5组（OP：Opallis - FGM）。通过傅里叶变换红外光谱分析，在即刻和24小时后分析转化率（DC，n = 3）。对于努氏硬度（KHN，n = 3），在2毫米厚的试样顶部和底部进行5次压痕。弯曲强度（FS，n = 10）通过万能试验机中的三点法测定。聚合应力（PS）通过在万能试验机中对聚甲基丙烯酸甲酯棒之间的材料（1.0毫米高）进行光固化来测定。使用Valo无绳LED（1000 mW/cm²×20 s：20 J）进行光固化。结果采用方差分析进行分析，并辅以Tukey检验（α = 0.05）。
VT和OP树脂的DC值最高（即刻和24小时后），其次是FZ、AU和ES。FZ（顶部和底部）的KHN值最高，与VT顶部相似。AU、ES、OP和VT在其顶部和底部表面之间的KHN在统计学上存在差异。FZ的RF值最高，其次是OP/VT、ES和AU。FZ、OP和VT的TP值最高。
具有新型聚合系统的Vittra APS树脂在所评估的参数方面表现出令人满意的性能。
