CAJ | 학술논문

背景:逆向工程建模在以往的研究中也较多采用,但针对种植方面建模的研究却鲜见,尤其下颌磨牙种植方面的研究更为少见.而下颌磨牙是牙列中缺失率最高的,所以利用逆向工程建立含下颌磨牙种植义齿的颌骨三维有限元模型,对下颌磨牙种植修复的研究具有参考价值.目的:利用逆向工程快速建立含下颌磨牙种植义齿的颌骨三维有限元模型,为口腔生物力学的研究提供数学模型基础.方法:通过螺旋CT扫描正常下颌骨,Mimics软件读取断层影像数据、数据分割、三维重建,应用Magics软件优化网格设计,Pro/E软件前处理实体模型,SolidWorks2007软件建立三维有限元模型并划分网格、求解.结果与结论:成功地重建了正常牙槽骨高度的下颌第一磨牙种植体三维有限元模型,与实体模型具有高度的几何相似性,力学性质、网格质量较好,模型可以根据需要进行简便易行的修改.可为研究不同种植设计方式修复下颌第一磨牙种植体周围骨的应力分析,提供极好的模型支持.
배경:역향공정건모재이왕적연구중야교다채용,단침대충식방면건모적연구각선견,우기하합마아충식방면적연구경위소견.이하합마아시아렬중결실솔최고적,소이이용역향공정건립함하합마아충식의치적합골삼유유한원모형,대하합마아충식수복적연구구유삼고개치.목적:이용역향공정쾌속건립함하합마아충식의치적합골삼유유한원모형,위구강생물역학적연구제공수학모형기출.방법:통과라선CT소묘정상하합골,Mimics연건독취단층영상수거、수거분할、삼유중건,응용Magics연건우화망격설계,Pro/E연건전처리실체모형,SolidWorks2007연건건립삼유유한원모형병화분망격、구해.결과여결론:성공지중건료정상아조골고도적하합제일마아충식체삼유유한원모형,여실체모형구유고도적궤하상사성,역학성질、망격질량교호,모형가이근거수요진행간편역행적수개.가위연구불동충식설계방식수복하합제일마아충식체주위골적응력분석,제공겁호적모형지지.
BACKGROUND: Reverse engineering modeling has been widely used in previous studies. However, there are a few studies on implantation modeling, especially in aspects of mandibular molar implantation. The mandibular molar has high miss rate in dentition. Thus, to establish three-dimensional finite element models of a jaw bones with mandibular molar implant denture using reverse engineering shows a great parameter value for research of mandibular molar implantation repair. OBJECTIVE: To establish a three-dimensional finite element model of a mandibular molar with dental implant inserted in mandibular molar area using reverse engineering, and to provide mathematical model basis for biomechanics researches of stomatology.METHODS: Establish three-dimensional model, divide mesh and calculate by Solidworks 2007 through scanning mandible by screw jaw using helix CT, obtaining data from images, separating data, rebuilding three-dimension using Mimics software,optimizing the design of mesh by Magics software, and dealing with solid model by Pro/E preprocessor.RESULTS AND CONCLUSION: A three-dimensional finite element model of mandibular first molar implant with regular depth was established, which has high geometrical similarity, good properties of mechanics and mesh, and can be easily modified. This can provide excellent model support for studying the stress analysis of different designs on restoring mandibular first molar implant.