一个新的树脂核心系统与一个低聚合缩水单体的结合性能,以根通道牙
Takashi Hatayama1, Tomoko Tabata1, Kota Kibe1
1Department of Cariology and Operative Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo 113-8549, Japan.
Polymers
|December 17, 2024
概括
一个新的低收缩树脂核心系统 (LC2) 显著改善了与根管牙的结合,并减少了隙间的形成. 这解决了根管治疗后树脂核心积累的关键问题,增强了修复成功.
科学领域:
- 恢复性牙科 恢复性牙科
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
背景情况:
- 树脂核心的积累对于内牙后修复至关重要,但面临着诸如聚合缩小和粘合性差等挑战.
- 现有的树脂核心系统往往表现出低于最佳的结合到根运河牙,特别是在顶部区域.
- 微小裂和隙形成可能会损害根管治疗牙的寿命和成功.
研究的目的:
- 评估一种新型低聚合-收缩树脂核心系统 (LC2) 的粘合性能和隙形成潜力.
- 为了比较LC2与其他商用树脂核心材料的有效性.
- 评估树脂核心系统对根运河牙粘附和内部隙发展的影响.
主要方法:
- 微拉力键强度 (MTBS) 测试在人类前上进行,以评估对根运河牙的粘附性.
- 扫描源光学连贯性断层扫描 (SS-OCT) 用于量化树脂芯内部的隙形成.
- 四个树脂核心系统 (LC1,LC2,MI Core LC流,Filtek Fill & Core) 在圆柱形腔中进行了测试.
主要成果:
- 与LC1,MI Core LC流和Filtek Fill & Core (p <0.05) 相比,LC2在顶端根管牙中表现出显著更高的结合强度.
- 与LC1 (31.8 ± 10.5%) 和MI Core LC流量 (32.0 ± 5.6%) (p < 0.05) 相比,LC2 (10.9 ± 5.0%) 和Filtek Fill & Core (11.9 ± 5.0%) 的间隙形成显著减少.
- 所有测试的系统都在冠状区域显示出比顶点区域更高的键强度,但LC2将这种差异降到最低.
结论:
- 新的低聚合-收缩树脂核心系统 (LC2) 为根运河牙提供了优越的粘合,特别是在顶部区域.
- LC2有效地减少了隙形成,这是预防二次牙和内牙衰竭的关键因素.
- LC2为树脂核心积累提供了一个有前途的替代方案,提高了根管治疗后恢复的可预测性和耐久性.
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