光固化与熔融堆积技术3D打印个别托盘的比较
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摘要
目的:比较光固化成型技术(stereo lithography apparatus,SLA)与熔融堆积成型技术(fused deposition modeling,FDM)制作上颌无牙颌3D打印个别托盘的精确度,并与传统手工方法进行对比。方法:采用同一个标准上颌无牙颌石膏模型灌注5个超硬石膏模型。利用3D扫描仪将模型组织面数据扫描导入计算机中,在Geomagic软件中设计个别托盘CAD数据,以STL格式保存,将数据分别导入采用SLA及FDM的3D打印机中,制作3D打印个别托盘。对照组采用传统手工方法制作个别托盘。在Geomagic及Imageware软件中分析不同方法制作的个别托盘给印模材料的预留空间大小,在SPSS中利用两独立样本t检验的统计学方法比较其精确度。结果:个别托盘预留空间为:(SLA组)0.98-1.06mm±0.05-0.14mm,(FDM组)0.98-1.03mm±0.13-0.19mm,(手工组)1.04-1.16mm±0.31-0.41mm。3D打印制作的个别托盘相较于手工制作的个别托盘,预留空间分布更接近于1mm,精确度更高(P<0.01)。SLA比FDM制作的个别托盘预留空间分布更接近于1mm,精确度更高,差别有统计学意义(P<0.01)。结论:两种3D打印技术制作的个别托盘精确度均优于手工制作的个别托盘,且光固化成型技术比熔融堆积成型技术制作的个别托盘精确度更高,采用光固化成型技术3D打印机制作个别托盘值得临床推广。
Objective: To compare the accuracy of SLA and FDM 3 D printing technology in making maxillary edentulous custom trays, and compare them with traditional manual methods. Methods: Five cast models were made using the same standard maxillary edentulous model. Using the 3 D scanner to scan the model's tissue surface data into computer, designing custom tray CAD data in Geomagic software, saving in STL format, and importing the data into a 3 D printer using SLA and FDM technology, respectively, to make 3 D printed custom trays. The control group used traditional manual methods to make custom trays. In Geomagic and Imageware software, the size of the reserved space for the impression materials was analyzed and compared. Result: Reserved space for custom trays was:(SLA group) 0.98-1.06 mm ±0.05-0.14 mm,(FDM group) 0.98-1.03 mm±0.13-0.19 mm,(Manual group) 1.04-1.16 mm±0.31-0.41 mm. Compared with hand-made custom trays, the custom trays produced by 3 D printing have a distribution closer to 1 mm and a higher accuracy(P<0.01).The reserved space distribution of SLA 3 D printed custom trays was closer to 1 mm than that of FDM printed custom trays,and the accuracy was higher. The difference was statistically significant(P <0.01). Conclusion: The accuracy of custom trays produced by the two 3 D printing technologies are all superior to the hand-made custom trays, and the SLA technology is more accurate than FDM technique in making custom trays. Therefore, the use of SLA technology in making 3 D printing custom trays is worth clinically promoting.
Objective: To compare the accuracy of SLA and FDM 3 D printing technology in making maxillary edentulous custom trays, and compare them with traditional manual methods. Methods: Five cast models were made using the same standard maxillary edentulous model. Using the 3 D scanner to scan the model's tissue surface data into computer, designing custom tray CAD data in Geomagic software, saving in STL format, and importing the data into a 3 D printer using SLA and FDM technology, respectively, to make 3 D printed custom trays. The control group used traditional manual methods to make custom trays. In Geomagic and Imageware software, the size of the reserved space for the impression materials was analyzed and compared. Result: Reserved space for custom trays was:(SLA group) 0.98-1.06 mm ±0.05-0.14 mm,(FDM group) 0.98-1.03 mm±0.13-0.19 mm,(Manual group) 1.04-1.16 mm±0.31-0.41 mm. Compared with hand-made custom trays, the custom trays produced by 3 D printing have a distribution closer to 1 mm and a higher accuracy(P<0.01).The reserved space distribution of SLA 3 D printed custom trays was closer to 1 mm than that of FDM printed custom trays,and the accuracy was higher. The difference was statistically significant(P <0.01). Conclusion: The accuracy of custom trays produced by the two 3 D printing technologies are all superior to the hand-made custom trays, and the SLA technology is more accurate than FDM technique in making custom trays. Therefore, the use of SLA technology in making 3 D printing custom trays is worth clinically promoting.
引文
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[2]范骐磊.全口义齿数字化设计的研究及实现[D].南京航空航天大学,2016
[3]Zarb GA,Bolender CL,Eckert SE,et al.Prosth odontic treatment for edentulous patients[M].St.Louis:Elsevier Mosby,2013:170-171
[4]李小丽,马剑雄,李萍,等.3D打印技术及应用趋势[J].自动化仪表,2014,(1):1-5
[5]朱艳青,史继富,王雷雷,等.3D打印技术发展现状[J].制造技术与机床,2015,(12):50-57
[6]Infante L,Yilmaz B,McGlumphy E.Fabricating complete dentures with CAD/AM technology[J].J Prosthet Dent,2014,111(5):351-355
[7]Alghazzawi TF.Advancements in CAD/CAM technology:Options for practical implementation[J].J Prosthodont Res,2016,60(2):72-84
[8]Kanazawa M,Inokoshi M,Minakuchi S,et al.Trial of a CAD/CAM system for fabricating complete dentures[J].Dent Mater J,2011,30(1):93-96
[9]冯海兰,徐军.口腔修复学[M].北京:北京大学医学出版社,2015:267
[10]余东满,李晓静,王笛.熔融沉积快速成型工艺过程分析及应用[J].机械设计与制造,2011,(8):65-67
[11]Hu C,Xu Y,Chen L,et al.Application of FDM three-dimensional printing technology in the digital manufacture of custom edentulous mandible trays[J].Sci Rep,2016,(6):19207
[12]Sun Y,Chen H,Li H,et al.Clinical evaluation of final impressions from three-dimensional printed custom trays[J].Scientific Reports,2017,7(1):14958
[13]杨继全.光固化快速成型的理论、技术及应用研究[D].南京:南京理工大学,2002
[14]袁慧羚,周天瑞.光固化快速成型工艺的精度研究[J].南方金属,2009,(2):24-27
[15]李东方,陈继民,袁艳萍,等.光固化快速成型技术的进展及应用[J].北京工业大学学报,2015,41(12):1769-1774
[16]陈小文,李建雄,刘安华.快速成型技术及光固化树脂研究进展[J].激光杂志,2011,(3):1-3
[17]Totu E E,A C Nechifor,G Nechifor,et al.Poly(methyl methacrylate)with TiO2 nanoparticles inclusion for stereolitographic complete denture manufacturing-the fututre in dental care for elderly edentulous patients?[J].J Dent,2017,59:68-77
[18]张云波,乔雯钰,张鑫鑫,等.3D打印用高分子材料的研究与应用进展[J].上海塑料,2015,(1):1-5