Fluoride release, recharge and flexural properties of polymethylmethacrylate containing fluoridated glass fillers
Fluoride release, recharge and flexural properties of polymethylmethacrylate containing fluoridated glass fillers
复制标题
DOI：
10.1111/adj.12168
复制
发表时间：
2014-06-01
影响因子：
2.1
通讯作者：
Ellakwa, A.
中科院分区：
文献类型：
--
作者：
Al-Bakri, I. A.;Swain, M. V.;Ellakwa, A.
背景：本研究的目的是研究氟化玻璃填料对改性聚甲基丙烯酸甲酯 (PMMA) 氟化物释放、补给和弯曲性能的影响。方法：制备具有不同氟化玻璃填料含量（按重量计 0%、1%、2.5%、5% 和 10%）的 PMMA 义齿基托材料样品。对在去离子水中老化 24 小时、1 个月和 3 个月后的矩形样本 (n = 10) 进行弯曲性能评估。圆盘样本 (n = 10) 在去离子水和乳酸 (pH 4.0) 中老化 43 天，并多次测量氟化物释放量。老化后，对样品进行再充电，并在再充电后 1、3 和 7 天记录氟化物重新释放。结果：与对照样品和 1% 玻璃填料样品相比，含有 2.5%、5% 和 10% 玻璃填料的样品显示出显着 (p < 0.05) 更高水平的氟化物释放。所有实验样本在两种介质中均表现出氟化物释放。样品的弯曲强度与填料含量成比例下降，弹性模量值保持在 ISO 标准 1567 范围内。结论：含氟化玻璃填料的改性 PMMA 具有释放和再释放氟离子的能力。随着玻璃填料用量的增加，弯曲强度下降。
Background: The purpose of this study was to investigate the effect of fluoridated glass fillers on fluoride release, recharge and the flexural properties of modified polymethylmethacrylate (PMMA).Methods: Specimens of PMMA denture base material with various loading of fluoridated glass fillers (0%, 1%, 2.5%, 5% and 10% by weight) were prepared. Flexural properties were evaluated on rectangular specimens (n = 10) aged in deionized water after 24 hours, 1 and 3 months. Disc specimens (n = 10) were aged for 43 days in deionized water and lactic acid (pH 4.0) and fluoride release was measured at numerous intervals. After ageing, specimens were recharged and fluoride re-release was recorded at 1, 3 and 7 days after recharge.Results: Samples containing 2.5%, 5% and 10% glass fillers showed significantly (p < 0.05) greater levels of fluoride release compared with the control and 1% glass fillers specimens. All experimental specimens exhibited fluoride release in both media. The flexural strength of specimens decreased in proportion to the percentage filler inclusion with the modulus of elasticity values remaining within ISO Standard 1567.Conclusions: The modified PMMA with fluoridated glass fillers has the ability to release and re-release fluoride ion. Flexural strength decreased as glass filler uploading increased.