数字化印模在口腔后牙单冠种植修复中的应用研究OACSTPCD
Study of applying intraoral scanning in implant-supported single crown restoration of posterior teeth
目的:比较数字化印模技术和传统硅橡胶印模技术在口腔后牙单冠种植修复中的精度.方法:选取下颌第一磨牙缺失的种植石膏模型 10 副,作为工作模型.通过传统硅橡胶印模技术制取开窗式和非开窗式模型,将所制作模型内替代体与相对应扫描杆紧密连接后对模型进行仓扫获取模型STL数据.采用口内扫描仪在离体状态下对工作模型进行光学扫描,获取模型的STL数据.采用3Shape软件,对模型上扫描杆数据与同型号扫描杆数据库数据进行匹配,获得模型植体的三维数据信息.采用 3Shape软件的Appliance Designer模块设定植体三维平面,Or-tho Analyzer模块测量植体虚拟位点之间的偏差.结果:以开窗印模组种植体为参考,与传统硅橡胶开窗印模技术相比,传统非开窗印模所获得的种植体在颊舌向、近远中向、垂直向距离偏差分别为(0.013±0.045)mm、(-0.029±0.091)mm、(0.003±0.529)mm,颊舌向、近远中向角度偏差分别为(0.010±0.273)°、(-0.400±0.837)°;数字化印模技术所获得的种植体在颊舌向、近远中向、垂直向距离偏差分别为(0.013±0.024)mm、(0.001±0.063)mm、(-0.017±0.040)mm,颊舌向、近远中向角度偏差分别为(0.240±0.455)°、(0.130±0.660)°.数字化印模技术与传统硅橡胶印模技术种植体偏差之间的差异均无统计学意义(P＞0.05).结论:数字化印模技术可以用于口腔后牙单冠种植修复的印模制取,其精度与传统开窗和非开窗硅橡胶印模技术无显著差异,能满足临床需求.
Objective:To compare the accuracy of intraoral scanning and conventional impression technique in im-plant-supported single crown restoration of posterior teeth.Methods:Ten implant working casts of lower first molar missing were selected as original casts.Open-tray impressions and close-tray impressions were made using conventional impression technique and poured with dental plaster.Implant surrogates were attached to implant scanbodies.Two groups of digital casts were obtained by extraoral scanning of plaster casts.Another group of digital casts were obtained by intraoral scanning of orig-inal casts.The implant positions was obtained by matching the scanbody data with the database data of the same model with 3Shape software.Three-dimensional plane of the implant was set by the Appliance Designer 3Shape software,and the three-dimensional deviations of implant positions between groups were analyzed with Ortho Analyzer 3Shape software.Results:Using the implants in open-tray group as a reference,compared with conventional open-tray impression technique,the mean buccal/lingual distance deviation,mesial/distal distance deviation and vertical distance deviation of implant position using conventional close-tray impression technique were(0.013±0.045)mm,(-0.029±0.091)mm and(0.003±0.529)mm.The mean buccal/lingual angle deviation and mesial/distal angle deviation were(0.010±0.273)° and(-0.400±0.837)°.The mean buccal/lingual distance deviation,mesial/distal distance deviation and vertical distance deviation of implant position u-sing intraoral scanning were(0.013±0.024)mm,(0.001±0.063)mm,(-0.017±0.040)mm.The mean buccal/lingual angle deviation and mesial/distal angle deviation were(0.240±0.455)°,(0.130±0.660)°.There was no statistical signif-icance of implants between intraoral scanning and conventional impression technique(P＞0.05).Conclusion:Intraoral scan-ning can be applied in the impression making of implant-supported single crown restoration of posterior teeth.There was no significantly different intraoral scanning and close-tray or open-tray technique,which can meet the clinical needs.
龚志成;沈昱音;房硕博;祁胜财
上海市口腔医院口腔技术中心 上海 200001||上海市颅颌面发育与疾病重点实验室 上海 200001上海市颅颌面发育与疾病重点实验室 上海 200001||上海市口腔医院口腔修复科 上海 200001
口腔医学
数字化口内扫描单冠种植修复
Digital dentistryIntraoral scanningSingle crownImplant-supported restoration
《临床口腔医学杂志》 2024 (001)
26-29 / 4
上海市口腔医院科技人才项目(SHH-2022-YJ-B02);上海市口腔医院科技基金项目(SSH-2023-08)
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