| 肖燕萍,谢胜芬,徐苏华,陈小君,陈能.口腔修复用金属三维打印件中夹杂物和孔隙率问题分析[J].口腔材料器械杂志,2023,32(4):261-265. |
| 口腔修复用金属三维打印件中夹杂物和孔隙率问题分析 |
| Analysis of inclusions and porosity in metal 3D printing devices for dental restorations |
| 投稿时间：2023-09-28 修订日期：2023-10-28 |
| DOI：10.11752/j.kqcl.2023.04.06 |
| 中文关键词: 3D打印 夹杂物 孔隙率 口腔金属修复体 |
| 英文关键词:3D printing Inclusions Porosity Dental metal restoration |
| 基金项目:广东省药品监督管理局科技创新项目（编号：2022ZDZ05） |
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| 中文摘要: |
| 目的 探讨口腔修复用金属三维打印件中夹杂物和孔隙率不合格原因，为三维打印口腔金属修复体的加工制作过程控制提供参考。方法 选择44批次钴铬合金和钛合金激光选区熔化（SLM）修复体3D打印件，在金相显微镜下放大100倍测定夹杂物和孔隙的面积分数，分析打印件的孔隙特征和产生不合格的原因。结果 夹杂物和孔隙的面积分数>2.8%的有16批次，不合格率为36.4%。44批次检测样品中未见明显夹杂，不合格均由孔隙面积分数超过2.8%导致。结论 目前口腔修复体加工制作行业对数字化3D打印技术的掌握尚不成熟，加工工艺技术有待进一步提高。 |
| 英文摘要: |
| Objective To investigate the reasons of unqualified inclusions and porosity in metal 3D printed dental restorations, and to provide a reference for controlling the process of fabrication of 3D-printed dental metal restorations.Methods Forty-four batches of cobalt-chromium alloys and titanium alloys with 3D-printed laser selective zone melting(SLM) restorations were selected to determine the area fraction of inclusions and porosity at 100×magnification of the microscope, and to analyze the pore characterisation and the unqualified reasons.Results There were 16 batches with an area fraction of inclusions and porosity greater than 2.8%, the rejection rate was 36.4%. No obvious inclusions were found in the 44 batch samples, and the non-conformities were all caused by porosity exceeding 2.8%.Conclusions At present, the dental restoration production industry is still immature in digital 3D printing technology, and the 3D printing technology needs to be further improved. |
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