Abstract：Objective To investigate the effect of grooves and fissures on stress distribution of the right mandibular first molar.Methods An intact first mandibular molar was scanned with Micro-CT, before ANSYS14.0 software was used to establish a three-dimensional finite element model of the right first molar with or without grooves. 500N was loaded to compare the stress distribution in the two models.Results n the two models, the tensile stress appeared in the fovea groove. The peak tensile stress was 92.48 MPa in the experimental group and 71.34 MPa in the control .The stress peak value and distribution of tensile stress in the experimental group were significantly greater than those in the control group. Conclusion After loading on the two models, it is found that the existence of the grooves structure affects the stress distribution of the mandibular first molar, which requires further research.
孙丽梅,许立侠,徐红梅. 基于Micro-CT初步分析沟裂结构对下颌第一磨牙应力分布的研究[J]. 武警医学, 2016, 27(10): 1009-1011.
SUN Limei,XU Lixia,and XU Hongmei. Influence of fissures on the mandibular first molar based on digital images by Micro-CT. Med. J. Chin. Peop. Armed Poli. Forc., 2016, 27(10): 1009-1011.
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2016, Vol. 27 
