CAJ | 학술논문

基于三角网格描述的三维牙颌模型,根据牙龈变形的生理医学特性,结合牙龈变形仿真的实时性和逼真性要求,提出一种完整的牙龈软组织变形仿真算法.该算法根据三维牙颌模型的曲率特性,对其生物特征信息进行定量描述;在曲率特性分析的基础上进行区域划分,确定牙冠、牙龈及变形中的固定区域;根据牙龈的变形类似于带边界约束的弹塑性薄膜的变形特性,采用能量函数驱动方式,实现牙龈动态连续变形.
기우삼각망격묘술적삼유아합모형,근거아간변형적생리의학특성,결합아간변형방진적실시성화핍진성요구,제출일충완정적아간연조직변형방진산법.해산법근거삼유아합모형적곡솔특성,대기생물특정신식진행정량묘술;재곡솔특성분석적기출상진행구역화분,학정아관、아간급변형중적고정구역;근거아간적변형유사우대변계약속적탄소성박막적변형특성,채용능량함수구동방식,실현아간동태련속변형.
Simulating the real-time deformation of gum tissues in medical application,an integrated simulation framework was designed for the 3D dental model described by the triangular mesh and based on the physiological and medical characteristics of soft gum tissues.The bio-information of the 3D dental model was analyzed quantitatively according to its corresponding characteristics of surface curvature.During the deformation simulation,the gum tissue,tooth crown and fixed regions were recognized and separated interactively by using the curvature information as reference.Finally,under the assumption that the gum tissue deformation was verisimilar to the deformation of the elastic-plastic membrane with given boundary constraints,the gum tissue was deformed dynamically and continuously by minimizing the corresponding energy function.Experimental results demonstrate that the simulation framework can meet the medical requirements both in deformation efficiency and quality.