口腔内3种合金共存下的离子析出及表面粗糙度的改变

doi:10.19439/j.sjos.2020.01.008

上海口腔医学 ›› 2020, Vol. 29 ›› Issue (1): 40-45.doi: 10.19439/j.sjos.2020.01.008

口腔内3种合金共存下的离子析出及表面粗糙度的改变

张华¹, 周团锋¹, 杨雪¹, 周翊翛²

1.北京大学口腔医学院·口腔医院第一门诊部,国家口腔疾病临床医学研究中心, 口腔数字化医疗技术和材料国家工程实验室,口腔数字医学北京市重点实验室,北京 100034;
2.首都医科大学口腔医学院修复科,北京 100050

收稿日期:2019-07-30 出版日期:2020-02-25 发布日期:2020-03-09
通讯作者: 周团锋,E-mail:1442880187@qq.com
作者简介:张华(1987-),女,硕士,住院医师, E-mail:penshuixiaoxiang@sina.com

Change of ion precipitation and surface roughness of three dental alloys coexisting

ZHANG Hua¹, ZHOU Tuan-feng¹, YANG Xue¹, ZHOU Yi-xiao²

1.First Clinical Division, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology. Beijing 100034;
2.Department of Prosthodontics, Capital Medical University School of Stomatology. Beijing 100050, China

Received:2019-07-30 Online:2020-02-25 Published:2020-03-09

摘要/Abstract

摘要： 目的：研究口腔内3种合金共存下的离子析出及表面粗糙度的改变,为临床合金修复材料的选择提供参考。方法：制作镍铬合金、钴铬合金和金银钯合金标准试件,分为镍铬合金（N组）、钴铬合金（C组）、金银钯合金（A组）、镍铬合金与金银钯合金（NA组）和镍铬合金与钴铬合金（NC组）5组。浸泡于标准电解质溶液（T=37 ℃,pH=2.31）中,每组平行重复4次。7 d后,用电感耦合等离子体质谱仪检测各组浸提液中离子析出量;用原子力显微镜观察各组试件表面形貌,测量表面粗糙度。采用SPSS 18.0软件包对数据进行统计学分析。结果：析出的镍离子量N组为（1.32±0.03） μg/cm², NA组为(2.13±0.07) μg/cm²,NC组为(1.53±0.08) μg/cm²,NA组、NC组均显著多于N组,NA组显著多于NC组（P<0.05）;析出的铬离子量N组为(0.06±0.01) μg/cm²,NA组为(0.08±0.01) μg/cm²,NC组为(0.05±0.01) μg/cm²,NA组显著多于NC组（P<0.05）。镍铬合金的表面粗糙度N组为(4.60±0.16) nm,NA组为(5.37±0.08) nm,NC组为(5.04±0.15) nm,NA组、NC组均显著大于N组,NA组显著大于NC组（P<0.05）。镍铬合金与金银钯合金或钴铬合金共存时,析出的镍离子量比其单独使用时明显增多,其表面粗糙度明显增大;镍铬合金与金银钯合金共存时比镍铬合金与钴铬合金共存时析出的镍、铬离子量多,镍铬合金的表面粗糙度也大。结论：临床上应尽量避免在患者口腔内同时应用镍铬合金与金银钯合金,或镍铬合金与钴铬合金,尽量避免贱金属的临床使用。

关键词: 合金, 电偶腐蚀, 离子析出, 表面粗糙度

Abstract: PURPOSE: To study the change of ion precipitation and surface roughness of three dental alloys'coexisting in standard electrolyte solution, in order to provide a reference for the selection of clinical alloy materials. METHODS: Standard samples of Ni-Cr alloy, Co-Cr alloy and Au-Ag-Pd alloy were prepared and divided into 5 groups: Ni-Cr alloy(group N), Co-Cr alloy(group C), Au-Ag-Pd alloy(Group A), Ni-Cr alloy contact with Au-Ag-Pd alloy(group NA), Ni-Cr alloy contact with Co-Cr alloy(group NC). All groups of alloys were soaked in standard electrolyte solution (T=37 ℃, pH=2.31) for 7 days. Inductively coupled plasma mass spectrometry (ICP-MS) was used to measure the amount of ions released from each group. The surface morphology of each group was observed and the surface roughness(Ra) was measured using atomic force microscope（AFM）. SPSS 18.0 software package was used for statistical analysis. RESULTS: The amount of nickel ions released from group N, NA, NC was (1.32±; 0.03) μg/cm2, (2.13±; 0.07) μg/cm2, (1.53±; 0.08) μg/cm2, respectively. Nickel ions of group NA and NC was significantly more than that of group N(P<; 0.05), nickel ions of group NA was significantly more than that of group NC(P<; 0.05). The amount of chromium ions released from group N, NA, NC was (0.06±; 0.01) μg/cm2, (0.08±; 0.01) μg/cm2, (0.05±; 0.01) μg/cm2, respectively, the amount of chromium ions of group NA was significantly more than that of group NC(P<; 0.05). The surface roughness of Ni-Cr alloy in group N, NA, NC was (4.60±; 0.16) nm, (5.37±; 0.08) nm, (5.04±; 0.15) nm, respectively. The surface roughness of Ni-Cr alloy in group NA and group NC was significantly larger than that in group N (P<; 0.05). When contact with Au-Ag-Pd alloy or Co-Cr alloy, the amount of nickel ions released and the surface roughness of Ni-Cr alloy both significantly increased. Compared with Co-Cr alloy, Au-Ag-Pd alloy caused Ni-Cr alloy to release more nickel, chromium ions and formed a rougher surface. CONCLUSIONS: It is necessary to avoid simultaneous application of Ni-Cr alloy and Au-Ag-Pd alloy, or Ni-Cr alloy and Co-Cr alloy in the patient's mouth. Non-precious metals should be avoided as much as possible clinically.

Key words: Alloy, Galvanic corrosion, Ion precipitation, Surface roughness

中图分类号:

R783.1

张华, 周团锋, 杨雪, 周翊翛. 口腔内3种合金共存下的离子析出及表面粗糙度的改变[J]. 上海口腔医学, 2020, 29(1): 40-45.

ZHANG Hua, ZHOU Tuan-feng, YANG Xue, ZHOU Yi-xiao. Change of ion precipitation and surface roughness of three dental alloys coexisting[J]. Shanghai Journal of Stomatology, 2020, 29(1): 40-45.

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口腔内3种合金共存下的离子析出及表面粗糙度的改变

Change of ion precipitation and surface roughness of three dental alloys coexisting

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