Initial evolution research for design and process accuracy of one type of domestic computer aided design soft and computer aided manufacture
10.3760/cma.j.issn.1002-0098.2013.09.008
- VernacularTitle:国产计算机辅助设计软件设计精度与计算机辅助制作设备加工精度初探
- Author:
Yang SONG
1
;
Yi-Jiao ZHAO
;
Yu-Chun SUN
;
Pei-Jun L(U)
;
Yong WANG
Author Information
1. 100081,北京大学口腔医学院·口腔医院口腔医学计算机应用中心口腔数字化医疗技术和材料国家工程实验室卫生部口腔医学计算机应用工程技术研究中心
- Keywords:
Computer-aided design;
Computer-aided manufacture;
Crowns;
Marginal fitness
- From:
Chinese Journal of Stomatology
2013;48(9):550-553
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the design and manufacture accuracy of a domestic computer aided design(CAD) and computer aided manufacture(CAM) system,and to compare it with similar foreign products.Methods Thirty models of posterior-teeth-single-crown preparations were collected,and STL data of these preparations was collected by Denmark 3Shape scanner.Three copings were made for each preparation,the one designed and manufactured using commercial CAD/CAM system (3Shape CAD software and Wieland T1 CAM equipment) was assigned into control group T0,the one designed and manufactured using domestic CAD software (developed by Peking University School and Hospital of Stomatology and Nanjing University of Aeronautics and Astronautics) and Wieland T1 CAM equipment was assigned into experimental group TCAD for design accuracy evaluation,and the one designed and manufactured using 3Shape CAD software and domestic CAM equipment(developed by Peking University School and Hospital of Stomatology,Tsinghua University and ShanDong XinHua Incorporated Company of medical apparatus and instruments) was assigned into experimental group TCAM for manufacture accuracy evaluation.Finally,the marginal fitness were compared and evaluated by using 3D & Profile measurement microscope laser.Results The marginal fitness of TCAD was 27.98 (19.10,46.57) μm in buccal,32.67 (20.65,50.82) μm in lingual,27.38 (22.53,52.61) μm in mesial,29.50 (22.68,53.65) μm in distal; of TCAM was 21.69(15.87,30.21) μm in buceal,18.51(13.50,22.51) μm in lingual,19.15(15.42,26.89) μm in mesial,22.77(18.58,32.15) μm in distal; and there were no statistical differences compared with T0 [20.16(17.16,48.00) μm in buccal,21.51(17.05,28.31) μm in lingual,23.54(17.89,30.04) μm in mesial and 23.94(17.93,28.19) μm in distal] except lingual data of TCAD.Conclusions The design and machining precision of this domestic CAD/CAM system is at the same level of those comparable foreign products.
