Fonseca Rodrigo Borges, de Paula Marcella Silva, Favarão Isabella Negro, Kasuya Amanda Vessoni Barbosa, de Almeida Letícia Nunes, Mendes Gustavo Adolfo Martins, Carlo Hugo Lemes
Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Goiás, Praça Universitária, s/n, Setor Universitário, 74605-220 Goiânia, GO, Brazil.
Department of Restorative Dentistry, Health Sciences Center, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil.
Biomed Res Int. 2014;2014:364398. doi: 10.1155/2014/364398. Epub 2014 May 20.
This study evaluated the influence of silane heat treatment and glass fiber fabrication type, industrially treated (I) or pure (P), on flexural and compressive strength of methacrylate resin bars (BISGMA/TEGDMA, 50/50%). Six groups (n = 10) were created: I-sil: I/silanated; P-sil: P-silanated; I-sil/heat: I/silanated heated to 100°; P-sil/heat: P/silanated heated to 100°; (I: I/not silanated; and P: P/not silanated. Specimens were prepared for flexural strength (10 × 2 × 1 mm) and for compressive strength 9.5 × 5.5 × 3 mm) and tested at 0.5 mm/min. Statistical analysis demonstrated the following for flexural strength (P < 0.05): I-sil: 155.89 ± 45.27(BC); P-sil: 155.89 ± 45.27(BC); I-sil/heat: 130.20 ± 22.11(C); P-sil/heat: 169.86 ± 50.29(AB); I: 131.87 ± 15.86(C). For compressive strength, the following are demonstrated: I-sil: 1367.25 ± 188.77(ab); P-sil: 867.61 ± 102.76(d); I-sil/heat: 1162.98 ± 222.07(c); P-sil/heat: 1499.35 ± 339.06(a); and I: 1245.78 ± 211.16(bc). Due to the impossibility of incorporating the stipulated amount of fiber, P group was excluded. Glass fiber treatment with heated silane enhanced flexural and compressive strength of a reinforced dental methacrylate.
本研究评估了硅烷热处理以及工业处理（I）或纯态（P）的玻璃纤维制造类型对甲基丙烯酸酯树脂棒（双酚A双甲基丙烯酸缩水甘油酯/二缩三乙二醇双甲基丙烯酸酯，50/50%）的弯曲强度和抗压强度的影响。创建了六组（n = 10）：I-硅烷化：I/硅烷化；P-硅烷化：P/硅烷化；I-硅烷化/加热：I/硅烷化并加热至100°；P-硅烷化/加热：P/硅烷化并加热至100°；（I：I/未硅烷化；以及P：P/未硅烷化。制备用于弯曲强度测试的试样（10×2×1毫米）和用于抗压强度测试的试样（9.5×5.5×3毫米），并以0.5毫米/分钟的速度进行测试。弯曲强度的统计分析结果如下（P < 0.05）：I-硅烷化：155.89±45.27（BC）；P-硅烷化：155.89±45.27（BC）；I-硅烷化/加热：130.20±22.11（C）；P-硅烷化/加热：169.86±50.29（AB）；I：131.87±15.86（C）。对于抗压强度，结果如下：I-硅烷化：1367.25±188.77（ab）；P-硅烷化：867.61±102.76（d）；I-硅烷化/加热：1162.98±222.07（c）；P-硅烷化/加热：1499.35±339.06（a）；以及I：1245.78±211.16（bc）。由于无法加入规定量的纤维，P组被排除。用加热的硅烷处理玻璃纤维可提高增强牙科甲基丙烯酸酯的弯曲强度和抗压强度。
