模型修正技术下游离端黏膜的数字化分析  

Digital Analysis of Mucosal Deformation of Distal-extension Removable Denture with Altered-cast Impression

作　　者：王晓萌 刘星纲[1] 江青松[1] 郑东翔[1,3] WANG Xiaomeng;LIU Xinggang;JIANG Qingsong;ZHENG Dongxiang(Department of Prosthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing 100050, China;Department of Stomatology, Peking University First Hospital, Beijing 100034, China;Beijing Youan Hospital, Capital Medical University, Beijing 100069, China)

机构地区：[1]首都医科大学附属北京口腔医院修复科,北京100050 [2]北京大学第一医院口腔科,北京100034 [3]首都医科大学附属北京佑安医院,北京100069

出　　处：《口腔医学研究》2021年第6期559-563,共5页Journal of Oral Science Research

基　　金：北京市医院管理局临床医学发展专项经费(编号:ZYLX201828)。

摘　　要：目的:量化评估模型修正技术对下颌游离端牙槽嵴黏膜的影响,为可摘局部义齿黏膜变形量数字化参数设定探寻前期数据基础。方法:连续纳入2018年12月~2020年2月就诊于首都医科大学附属北京口腔医院修复科需行下颌游离端可摘义齿修复的受试者7例,收集受试者口内数字化光学扫描及下颌CBCT数据,应用模型修正技术制取功能印模并行仓扫建模,应用Geomagic软件配准分析,R语言软件提取游离端牙槽嵴黏膜厚度和黏膜变形量。结果:(1)游离端黏膜厚度为(2.21±0.72)mm。(2)游离端黏膜变形量为(0.38±0.55)mm,由近中向远中逐渐增大。(3)各位点处黏膜变形量与黏膜厚度未发现显著相关趋势。结论:游离端黏膜变形量由近中向远中逐渐增大,各位点处黏膜变形量与黏膜厚度未发现显著相关趋势。Objective:To access the deformation of mandibular distal-extension mucosa with altered-cast impression techniques.Methods:Seven patients receiving a mandibular distal-extension removable denture with the altered-cast impression in prosthodontics department of Beijing Stomatological Hospital were assigned.Mandibular CBCT was performed and digital intraoral scanner was used to acquire anatomic impression of mandible.The altered cast was digitalized by the laboratory scanner.The digital models were registered by Geomagic software.The thickness and the deformation of distal-extension mandibular mucosa were processed and analyzed with Geomagic and R language softwares.Results:The thickness of distal-extension mucosa was(2.21±0.72)mm.The deformation of distal-extension mucosa was(0.38±0.55)mm,which increased from mesial to distal.There was no significant correlation between the mucosal deformation and the thickness in each point.Conclusion:The deformation of distal-extension mucosa increased from mesial to distal.There was no significant correlation between the mucosal deformation and the thickness in each point.

关 键 词：数字化分析 模型修正印模技术 游离端黏膜变形量 

分 类 号：R78[医药卫生—口腔医学]