数字化辅助设计与制造的新型开窗式定制托盘精度及适合性研究
Digital-aided design and manufacture of a new open-window customized pallet accuracy and fitness study
王辽辽 1杨尧瑶 1吴江2
作者信息
- 1. 710032 西安,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
- 2. 710032 西安,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材料学教研室
- 折叠
摘要
目的:应用新研发的数字软件设计并制作新型开窗式定制托盘,并对其精度和适合性进行评价.方法:选取标准下颌肯氏Ⅱ类牙列缺损的哑光金属模型作为初始模型,台式扫描仪扫描并以STL格式保存.在托盘设计软件中完成模型倒凹填补、托盘边缘线及(牙合)支托的绘制;添加手柄、排溢孔和咬合堤结构,完成托盘设计.应用三维打印技术制作聚丙烯酸材质的新型开窗式定制托盘10副.扫描托盘,将托盘数据导入Geomagic软件中,以托盘组织面为共同区域,将托盘CAD数据和三维扫描数据进行配准,利用3D偏差分析功能测量两者之间的偏差.将托盘复位于初始模型上扫描后获得"托盘-模型"数据并导入Geomagic软件中,将"初始模型"及"托盘"数据分别对齐于"托盘-模型"数据,测量并分析托盘内表面数据和初始模型数据之间的距离偏差.结果:新型开窗式定制托盘内表面打印精度相较于设计数据整体RMS估计值平均偏差值为(0.140 ±0.021)mm,(牙合)支托区平均偏差为(0.115±0.024)mm,游离端鞍基区平均偏差为(0.185±0.036)mm.托盘内表面与初始模型外表面平均间隙大小平均偏差为(0.998±0.042)mm,(牙合)支托区平均间隙量为(0.119±0.048)mm,游离端鞍基区平均间隙量为(0.989±0.082)mm.结论:新研发软件设计制作的新型托盘具有良好的精确度和适合性,可用于游离端牙列缺损修正印模的制取.
Abstract
Objective:To design and fabricate a new open-window customized tray by newly developed digital software,and to eval-uate its accuracy and fitness.Methods:A matte metal model of a standard mandibular Ken's class Ⅱ dental defect was selected as the initial model,scanned by a desktop scanner and saved in STL format.The model inverted concave filling,tray edge line and support bracket were completed in tray design software;handles,overflow holes and occlusal dike structures were added to complete the tray design.3D printing technology was used to produce 10 pairs of new open-window customized pallets made of polyacrylic acid.The pal-lets were scanned and the data were imported into Geomagic software,the pallet tissue surface was taken as a common area,the pallet CAD data were aligned with the 3D scanning data,and the deviation between the two was mesured by 3D deviation analysis.The"pal-let-model"data was obtained by repositioning the pallet on the initial model and imported into Geomagic software,and the"initial model"and"pallet"data were aligned to the"pallet-model"and"pallet"data respectively.The"initial model"and"pallet"data were aligned to the"pallet-model"data,and the distance deviation between the pallet inner surface data and the initial model data was measured and analyzed.Results:The average deviation of the inner surface printing accuracy of the new windowed customized pallet from the overall RMS estimate(mm)of the design data was 0.140±0.021,that of the support bracket area 0.115±0.024,and that of the free end saddle base area 0.185±0.036,respectively.The average deviation of the average gap size(mm)between the in-ner surface of the pallet and the outer surface of the initial model was 0.998±0.042,that of the support bracket area 0.1 1 9±0.048,and that of the saddle-base area of the free end 0.989±0.082,respectively.Conclusion:The new pallet made by the newly developed software has good accuracy and suitability,and can be used for the fabrication of corrective impressions for free-end dental defects.
关键词
定制托盘/游离端牙列缺损/计算机辅助设计辅助制造/适合性Key words
Customized tray/Free-end defects/Computer-aided design-assisted manufacturing/Fitness引用本文复制引用
基金项目
国家口腔临床医学研究中心专项(2020)(LCB202007)
出版年
2024
NETL
NSTL
万方数据