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新疆大学机械工程学院
Published:2022
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[1]罗辰宇,乌日开西·艾依提.基于数字光处理工艺的牙模树脂3D打印精度研究[J].新疆大学学报(自然科学版)(中英文),2022,39(03):363-368.
[1]罗辰宇,乌日开西·艾依提.基于数字光处理工艺的牙模树脂3D打印精度研究[J].新疆大学学报(自然科学版)(中英文),2022,39(03):363-368. DOI: 10.13568/j.cnki.651094.651316.2021.09.01.0004.
DOI:10.13568/j.cnki.651094.651316.2021.09.01.0004.
设计了一种根据牙体生理结构形态简化后含有多种几何特征的精度测试件,用于评价DLP(数字光处理)3D打印牙模树脂材料的精度.通过显微镜测量打印成型测试件的细微特征还原情况与各个特征的成型尺寸误差,从细微特征还原情况和特征的成型尺寸误差两个方面综合评价打印精度.通过调控DLP 3D打印的单层曝光时间和分层厚度两组重要工艺参数,分析两组工艺参数对评价指标的影响.确定当单层曝光时间为5 s、分层厚度为50μm为最佳打印参数,并使用该参数打印牙齿模型并对尺寸精度进行评价,最终获得精度误差为0.191 mm,标准差为0.142 mm,均方根值为0.244 mm,符合±1 mm以内误差的临床使用需求.
A precision test piece was designed to evaluate the precision of 3D printed dental mold resin materials with DLP(Digital Light Processing)
which has various geometric features simplified from the physiological structure of the teeth. The subtle feature restoration of the printed test piece and the molding size error of each feature are measured by a microscope
and the printing accuracy is comprehensively evaluated from the two aspects of that.The influence of the two sets of process parameters on printing accuracy is analyzed by adjusting the two important process parameters of single layer exposure time and layer thickness of DLP 3D printing. It is determined that the best printing parameters are the single layer exposure time of 5 s and the layer thickness of 50 μm. Use this parameter to print the teeth model and evaluate the dimensional accuracy. The final accuracy error is 0.191 mm
the SD is 0.142 mm
and the RM S is 0.244 mm
which meets the clinical use standard within ±1 mm.
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