选择性激光熔覆钴铬钼合金可摘局部义齿支架的加工精度分析

doi:10.19439/j.sjos.2020.06.007

上海口腔医学 ›› 2020, Vol. 29 ›› Issue (6): 596-600.doi: 10.19439/j.sjos.2020.06.007

选择性激光熔覆钴铬钼合金可摘局部义齿支架的加工精度分析

徐红珍¹, 龚志成², 钟群¹

1.上海市口腔病防治院永嘉路门诊部,2.修复工艺科,上海 200031

收稿日期:2019-12-23 修回日期:2020-03-25 出版日期:2020-12-25 发布日期:2021-01-08
通讯作者: 钟群,E-mail：zhongqun681115@qq.com
作者简介:徐红珍（1985-）,女,博士,主治医师,E-mail:xuhongzhen_021@fudan.edu.cn
基金资助:
上海市口腔病防治院院级项目（SSDC-2017-05）

Study on the accuracy of Co-Cr-Mo alloy removable partial denture framework fabricated by selective laser melting

XU Hong-zhen¹, GONG Zhi-cheng², ZHONG Qun¹

1. Department of Yongjia Dental Clinic, 2. Department of Prosthodontics Technology, Shanghai Stomatological Hospital. Shanghai 200031, China

Received:2019-12-23 Revised:2020-03-25 Online:2020-12-25 Published:2021-01-08

摘要/Abstract

摘要： 目的： 采用选择性激光熔覆（selective laser melting,SLM）技术制作钴铬钼合金可摘局部义齿（removable partial denture,RPD）支架,评估其加工精度。方法： 采用3Shape三维光学扫描仪口外扫描上颌肯氏I类牙列缺损石膏模型,将获取的三维形貌数据重建为数字化模型。利用3shape设计软件在其上进行RPD支架的计算机辅助（computer aided design,CAD）设计。SLM制作5个钴铬钼RPD支架,扫描各支架,获取三维数据,与原CAD数据进行逆向比对,评估其加工精度。结果： SLM钴铬钼支架在石膏模型上就位顺利,组织面与模型贴合,无翘动。与原模型之间的总体3D偏差值为(0.088±0.021) mm。结论： 采用SLM技术打印的钴铬钼合金RPD支架偏差较小,精度较高。

关键词: 可摘局部义齿, 支架, 选择性激光熔覆, 钴铬钼合金, 精度

Abstract: PURPOSE: To evaluate the accuracy of Co-Cr-Mo alloy removable partial denture (RPD) frameworks, which were fabricated by selective laser melting(SLM) technology. METHODS: 3Shape 3D optical scanner was used to scan a plaster model of maxillary Kennedy I dentition defect, and the obtained 3D topographical data were reconstructed into a digital model. Computer-aided design (CAD) of RPD framework was performed using 3shape design software. Five Co-Cr-Mo RPD frameworks were fabricated by SLM technology, then each framework was scanned to obtain 3D data and compared with the original CAD data, respectively, to evaluate the match accuracy. RESULTS: The Co-Cr-Mo scaffolds were in good position on the plaster model, and the tissue surface was adhered to the plaster model without warping. The overall 3D deviation from the original model was (0.088±0.021) mm. CONCLUSIONS: The Co-Cr-Mo framework fabricated by SLM technology in this experiment has less deviation and higher accuracy.

Key words: Removable partial denture, Framework, Selective laser melting, Co-Cr-Mo alloy, Accuracy

中图分类号:

R783.2

徐红珍, 龚志成, 钟群. 选择性激光熔覆钴铬钼合金可摘局部义齿支架的加工精度分析[J]. 上海口腔医学, 2020, 29(6): 596-600.

XU Hong-zhen, GONG Zhi-cheng, ZHONG Qun. Study on the accuracy of Co-Cr-Mo alloy removable partial denture framework fabricated by selective laser melting[J]. Shanghai Journal of Stomatology, 2020, 29(6): 596-600.

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选择性激光熔覆钴铬钼合金可摘局部义齿支架的加工精度分析

Study on the accuracy of Co-Cr-Mo alloy removable partial denture framework fabricated by selective laser melting

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