在流道的注射器灌:一个连续的计算流体动力学评估
Mário Rito Pereira1,2, Goncalo Silva3, Viriato Semiao4
1Department of Endodontics, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal.
概括
优化道灌在合流道需要特定的针设计和放置. 具有30/.07v制备大小的开放式针最好实现灌剂的更新和透.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科材料科学 牙科材料科学
- 生物医学工程 生物医学工程
背景情况:
- 有效的灌对于根管消毒至关重要.
- 同流道对灌供应和更新提出了独特的挑战.
- 注射器灌是一种常见的方法,但其在复杂解剖学中的有效性仍有争议.
研究的目的:
- 评估根管道准备,灌针设计和放置深度对合流道灌液流量的影响.
- 确定最佳的参数,以有效地灌输送和更新在下牙的 mesial 根.
主要方法:
- 微型计算机断层扫描 (micro-CT) 用于扫描准备好的根管模型.
- 计算流体动力学 (CFD) 模拟评估了灌流动力学.
- 测试的变量包括ProTaper Next制剂尺寸 (X2,X3,X4),针设计 (侧孔,开端) 和放置深度 (工作长度5,3,2 mm).
主要成果:
- 无论针的类型或深度如何,灌液主要通过没有针的道退出.
- 上灌剂的透和更新使用30G开放式针最有效.
- 30/.07v (ProTaper Next X3) 制备大小证明了优越的灌输送与最佳的针配置.
结论:
- 针的设计和道的准备有很大影响到流道的灌流.
- 位置最佳的开放式针与30/.07v制剂相结合,可增强顶端灌剂交换.
- 这些发现可以为复杂的根管系统提供改进的内牙灌协议.
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