新构型可摘局部义齿设计制作及精度与适合性研究  

Design and fabrication of new removable partial dentures and their accuracy and suitability

作　　者：杨尧瑶 温涛 王辽辽 吴江 YANG Yaoyao;WEN Tao;WANG Liaoliao;WU Jiang(State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration,National Clinical Research Center for Oral Diseases,Shaanxi Key Laboratory of Stomatology,Department of Prosthodontics,The Third Hospital Affiliated of Air Force Military Medical University,Xi'an,710032,China;Jingnan Medical Area of Chinese PLA General Hospital,Beijing;Department of Dental Materials,The Third Hospital Affiliated of Air Force Military Medical University,Xi'an)

机构地区：[1]口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔医学重点实验室,空军军医大学第三附属医院口腔修复科,西安710032 [2]解放军总医院京南医疗区 [3]空军军医大学第三附属医院口腔材料学教研室

出　　处：《实用口腔医学杂志》2024年第4期494-498,共5页Journal of Practical Stomatology

基　　金：空军军医大学第三附属医院新技术新业务(编号:LX2022-302)。

摘　　要：目的:对可摘局部义齿进行新构型设计与制作,评估其精度及适合性。方法:在支架网状结构部分设计带基牙预备体的结构,通过分层方法,设计树脂基板颊侧与组织面,分别使用选择性激光熔融技术制作(SLM)、数字光处理技术(DLP)及数控切削技术(CNC)制作钛合金新构型可摘局部义齿支架、基托树脂部分及牙冠,拼接组装完成实验组新构型可摘局部义齿;对照组为SLM技术制作的传统设计可摘局部义齿支架,常规排牙充胶完成最终义齿。每组10个样本。采用Geomagic Warp软件的3D比较功能对两组可摘局部义齿的精度及适合性进行检测,并对结果统计分析。结果:实验组与对照组义齿支架精度3D偏差(mm)分别为0.153±0.019和0.153±0.011(P=0.978),义齿整体适合性3D偏差(mm)分别为0.191±0.006和0.187±0.007(P=0.218)。结论:新构型可摘局部义齿设计与制作过程简便,易于个性化修整,精度与适合性符合临床需求。Objective:To design and manufacture removable partial dentures with a new configuration,and to evaluate their accuracy and suitability.Method:A structure with abutment tooth preparation was designed in the mesh structure of the bracket.The resin substrate of buccal and tissue surfaces was designed using a layered method.Selective laser melting(SLM),digital light processing(DLP)and CNC cutting techniques were used to produce a pure titanium new configuration removable local denture bracket,base resin part and crown,respectively,followed by splicing and assembling the new removable partial denture configuration(Test group).The samples in control group was a traditional design removable partial denture bracket made by SLM technology,and the final denture was completed by conventional tooth placement and filling with glue.10 samples were included in each group.The accuracy and suitability of the sample were examined,data were statistically analyzed.Results:The accuracy(3D deviation,mm)of the test and control group was 0.153±0.019 and 0.153±0.011(P=0.978),the overall suitability(3D deviation,mm)of the 2 groups was 0.191±0.006 and 0.187±0.007(P=0.218),respectively.Conclusion:The configurtion is simplified and more feassible to design and manufacture removable partial denture with proper accuracy and suitability.

关 键 词：数字化设计 选择性激光熔融 可摘局部义齿 精度 适合性 

分 类 号：R783.6[医药卫生—口腔医学] TP391.73[医药卫生—临床医学]