不同根管腔设计的上颌第二磨牙生物力学特性——有限元分析
Biomechanical Properties of Maxillary Second Molar with Different Endodontic Cavity Designs - A Finite Element Analysis.
作者信息
Srinivasan Madhumita, Chakravarthy Dhanavel, Yen Vidya Albert, Baskar Kaviya, Thirunavukkarasu Manojkumar, Ravi Megavarnan
机构信息
Department of Conservative Dentistry and Endodontics, Karpaga Vinayaga Institute of Dental Sciences, Tamil Nadu, India.
Department of Conservative Dentistry and Endodontics, Indira Gandhi Institute of Dental Sciences, Puducherry, India.
出版信息
J Pharm Bioallied Sci. 2023 Jul;15(Suppl 1):S715-S719. doi: 10.4103/jpbs.jpbs_171_23. Epub 2023 Jul 5.
AIM
To evaluate the biomechanical properties of maxillary second molars with three different cavity designs - Traditional, Conservative, and Extended - endodontic cavities using the finite element analysis method.
MATERIALS AND METHODS
Three finite element models of a maxillary second molar with three different types of endodontic cavities were designed and restored. Each model was subjected to three different force loads directed at the occlusal surface. The stress distribution patterns and the maximum von Mises (VM) stresses were calculated and compared.
RESULTS
Vertical force of multipoint load on the occlusal surface and lateral forces to the palatal cusp showed the maximum stress values in the extensive cavity design, followed by the traditional cavity design and then the conservative cavity design.
CONCLUSION
The VM stress distribution in the conservative endodontic cavity was minimal when compared to other access cavity designs.
目的
采用有限元分析方法评估上颌第二磨牙三种不同洞型设计——传统型、保守型和扩展型——根管治疗洞型的生物力学性能。
材料与方法
设计并修复了具有三种不同类型根管治疗洞型的上颌第二磨牙的三个有限元模型。每个模型在咬合面施加三种不同的力载荷。计算并比较应力分布模式和最大冯·米塞斯（VM）应力。
结果
咬合面多点加载的垂直力和腭尖的侧向力在扩展型洞型设计中显示出最大应力值，其次是传统型洞型设计，然后是保守型洞型设计。
结论
与其他开髓洞型设计相比，保守型根管治疗洞型中的VM应力分布最小。
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