评估压力分布在一个经过内治疗的大中央牙,损伤用不同的皇冠材料恢复的压力分布:有限元分析
Ömer Kirmali1, Gülsah Icen1, H Kursat Celik2
1Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
Heliyon
|February 15, 2024
概括
复合树脂修复为带有病变的根管治疗牙提供了一个生物力学上健全的选择. 对于皇冠,或金属基础设施提供更好的应力分布,可能有助于周围的愈合.
科学领域:
- 生物材料科学 生物材料科学
- 牙科生物力学 牙科生物力学
- 有限元分析 有限元分析
背景情况:
- 用各种材料恢复的牙周病变牙的生物力学行为没有得到充分的记录.
- 了解牙和膜骨中的应力分布对于恢复成功至关重要.
研究的目的:
- 调查根管治疗的上切口与用不同的皇冠材料恢复的周周病变的结构应力分布.
- 通过有限元分析 (FEA) 在静态负载条件下分析气膜骨中应力映射.
主要方法:
- 创建了五种有限元素分析 (FEA) 模型:健康的牙,复合材料填充,基皇冠,Ni-Cr基础设施皇冠和IPS E-max基础设施皇冠.
- 模型代表了根管治疗的牙,带有周周病变和各种修复材料.
- 在45°的角度施加100N的力来模拟力,并分析应力分布.
主要成果:
- 压力分布在模型之间有所不同,IPS E-max冠显示最高的最大应力 (136.050 MPa).
- 复合材料填充的牙模型表现出最低的应力 (80.39 MPa).
- 所有模型都显示出类似的压力模式,宫项圈的压力高,宫周损伤区域的压力低.
结论:
- 根管治疗牙的修复性选择具有周周病变,显著影响牙和气泡骨生物力学.
- 周周损伤区域的压力较低表明有治愈的潜力.
- 复合树脂是可行的首选修复;或金属支的皇冠是生物力学上有利的.
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