冯·米塞斯屈服准则
前磨牙
材料科学
变形(气象学)
压力(语言学)
有限元法
搪瓷漆
口腔正畸科
结构工程
复合材料
臼齿
医学
工程类
语言学
哲学
作者
Amra Vuković,Selma Jakupović,Selma Zukić,Anita Bajsman,Alma Gavranović Glamoč,Sadeta Šečić
出处
期刊:Acta Medica Academica
[Academy of Sciences and Arts of Bosnia anad Herzegovina]
日期:2019-12-31
卷期号:48 (3): 255-261
被引量:4
标识
DOI:10.5644/ama2006-124.265
摘要
The aim of this paper was to analyze the distribution of stress and deformation on the mandibular first premolar under two types of loading (axial and para-axial load of 200 N) using the FEM computer method.For this research a µCT scan of the first mandibular premolar was used, and the method used in this research was FEM analysis under two types of loading.The values of the von Mises stress measured in the cervical part of an intact tooth under axial load were up to 12 MPa, and under paraaxial load over 50 MPa. The values of the stress measured on the bottom of the noncarious lesion are very high ≈ 240 Mpa. Stress values in the cervical part of the intact tooth are higher in the zone of the sub-surface enamel. The deformation values of the tooth under para-axial loading were ≈ 10 times higher than the value of the deformation under axial load. The greatest deformations were seen in the area of the tooth crown.Occlusal loading leads to significant stress in the cervical part of teeth. The values of the measured stress are greater under the action of paraxial load. The values of stress in abfraction lesions measured under a paraxial load are extremely high. Exposing the lesion to further stress will lead to its deepening. The total deformation of the entire tooth under paraxial load was ≈ 10 times higher compared to the deformation value of the tooth under axial load.
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