Faculty of Dentistry, Thammasat University.
Dent Mater J. 2020 Aug 2;39(4):608-615. doi: 10.4012/dmj.2019-020. Epub 2020 Feb 7.
The aim of this study was to assess monomer conversion, dimensional stability (mass and volume changes), biaxial flexural strength (BFS), and fluoride release of recently developed resin composites containing alkaline fillers (Cention N; CN) compared with resin-modified glass ionomer cements (RMGICs: Riva LC; RL and Fuji II LC; FL), and conventional composite (Z350). FL showed highest monomer conversion (88±2%) followed by RL (73±10%), CN (59±2%), and Z350 (50±2%). RL exhibited highest mass and volume increase (10.22±0.04 wt% and 19.4±0.2 vol%). CN exhibited higher BFS (180±20 MPa) than RMGICs but lower than Z350 (248±27 MPa). The highest cumulative fluoride release at 6 weeks was observed with RL (136±22 ppm) followed by CN (36±4 ppm) and FL (30±3 ppm). CN exhibited monomer conversion higher than the composite. CN also released fluoride in the range of that observed with RMGICs but with higher flexural strength.
本研究旨在评估含有碱性填料的新型树脂复合材料（Cention N；CN）与树脂改性玻璃离子水门汀（Riva LC；RL 和 Fuji II LC；FL）和传统复合材料（Z350）相比，单体转化率、尺寸稳定性（质量和体积变化）、双轴弯曲强度（BFS）和氟释放的情况。FL 表现出最高的单体转化率（88±2%），其次是 RL（73±10%）、CN（59±2%）和 Z350（50±2%）。RL 表现出最高的质量和体积增加（10.22±0.04wt%和 19.4±0.2vol%）。CN 表现出比 RMGIC 更高的 BFS（180±20MPa），但低于 Z350（248±27MPa）。在 6 周时，RL 观察到的累积氟释放量最高（136±22ppm），其次是 CN（36±4ppm）和 FL（30±3ppm）。CN 的单体转化率高于复合材料。CN 还释放了与 RMGIC 相似范围内的氟，但具有更高的弯曲强度。
