Tsuji Yukiko, Hiraishi Noriko, Ikeda Masaomi, Uo Motohiro, Tsuchida Yumi, Ushijima Kei, Nikaido Toru, Shimada Yasushi
Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Oral Biomedical Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Dent Mater J. 2025 Jan 31;44(1):34-40. doi: 10.4012/dmj.2024-195. Epub 2024 Dec 3.
This study aimed to evaluate ionic release, flexural strength and water absorption of UDMA resins containing 0-30 wt% surface pre-reacted glass-ionomer (S-PRG) filler fabricated by a DLP 3D printer. Release of Al, B, Na, Sr and F ions were measured by inductively coupled plasma (ICP) and an ion meter. Flexural strength test and water absorption measurements were performed according to the International Organization for Standardization (ISO) 4049 standard and ISO 1567 standard, respectively. Sr ions were released the most, followed by F, B, Na and Al ions. The highest flexural strength was recorded with the S-PRG filler amount 0 wt%, followed by the S-PRG filler amounts 30, 20 and 10 wt%. Water absorption after one week was below the 32 µg/mm mark specified by ISO 1567. The release of ions was confirmed using UDMA-based photopolymerized resin containing S-PRG filler. Furthermore, the results suggest that this resin could be used for provisional restoration.
本研究旨在评估通过数字光处理（DLP）3D打印机制造的、含有0-30 wt%表面预反应玻璃离子体（S-PRG）填料的UDMA树脂的离子释放、弯曲强度和吸水性。通过电感耦合等离子体（ICP）和离子计测量Al、B、Na、Sr和F离子的释放。弯曲强度测试和吸水性测量分别根据国际标准化组织（ISO）4049标准和ISO 1567标准进行。Sr离子释放量最多，其次是F、B、Na和Al离子。S-PRG填料含量为0 wt%时记录到最高弯曲强度，其次是S-PRG填料含量为30、20和10 wt%时。一周后的吸水率低于ISO 1567规定的32 µg/mm标记。使用含有S-PRG填料的基于UDMA的光聚合树脂确认了离子的释放。此外，结果表明这种树脂可用于临时修复。
