腭部瘢痕力对腭裂上颌骨影响的有限元研究

发布时间：2018-04-09 10:48

本文选题：腭部瘢痕力　切入点：腭裂　出处：《实用口腔医学杂志》2014年04期

【摘要】：目的:探究腭部瘢痕力对腭裂上颌骨的作用机制。方法:利用Ansys软件在含有腭板软组织腭裂上颌骨三维有限元模型上,添加腭部瘢痕力并对腭裂上颌骨进行受力分析。结果:腭部瘢痕力作用下腭裂上颌骨以裂隙区为中央,非裂隙侧上颌骨顺时针旋转,裂隙侧上颌骨逆时针旋转;形变动画表明:两侧上颌骨在横断面上由外向内,在矢状面上由前向后移动,且前者程度大于后者;牙槽突外侧受到以拉伸力为主的应力,内侧受到以压缩力为主的应力;上颌骨前段的形变大于后段;牙槽突形变量较颌骨体明显;上颌骨形变位移:宽度高度长度。结论:两侧上颌骨分别发生向中央裂隙区的旋转,导致裂隙变窄;上颌骨生长均受到抑制,其中宽度最严重,高度次之,长度最轻;上颌骨前段所受到的影响大于后段;牙槽突所受到的影响大于颌骨体。
[Abstract]:Objective: To explore the mechanism of palatal scar on cleft palate maxillary. Methods: using Ansys software in the maxillary palatal plate containing soft tissue of cleft palate on the three-dimensional finite element model of palatal scar, add force and force analysis of the cleft palate maxillary. Results: the effect of palatal scar under cleft palate maxillary fracture for the central region, non fractured maxillary clockwise, counterclockwise rotation of the maxilla fracture side; deformation animation show that both sides of the maxilla in cross section from the outside to the inside, in the sagittal plane is to move forward and backward, and the former is greater than the latter; alveolar lateral stress to tensile stress mainly. Inside are subjected to stress by compression deformation mainly; maxillary anterior posterior segment than; alveolar shape variables than the maxillary body obviously; maxillary deformation: width length and height. Conclusion: both sides of the maxilla were central to the fractured zone of rotation, resulting in crack The growth of the maxilla is inhibited. The width is the most serious, the height is the second and the length is the lightest. The anterior maxilla is more affected than the posterior part, and the alveolar process is more affected than the jaw bone.

【作者单位】：西安交通大学口腔医院颌面外科;西北工业大学能源与动力学院;
【基金】：西安市科技攻关项目[编号:SF09030(3)]
【分类号】：R782.2

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