华西口腔医学杂志

• 临床研究 • 上一篇    下一篇

自制钛包埋方法和铸模冷却方式的研究

赵  鹃1,黄  旭2,赵云凤3,肖茂春3,李  勇3   

  1. 1.浙江大学医学院附属口腔医院  修复科,浙江  杭州 310006; 2.浙江大学医学院附属第一医院  口腔科,浙江  杭州 310003;3.四川大学华西口腔医院  修复科,四川  成都 610041
  • 收稿日期:2006-10-25 修回日期:2006-10-25 出版日期:2006-10-20 发布日期:2006-10-20
  • 通讯作者: 赵云凤,Tel:028-85501441
  • 作者简介:赵 鹃(1976-),女,四川人,主治医师,博士

Research on Investing Methods and Mold Cooling Methods of the Self-made Investment for Pure Titanium Castings

ZHAO Juan1, HUANG Xu2, ZHAO Yun-feng3, XIAO Mao-chun3, LI Yong3   

  1. 1. Dept. of Prosthodontics, Affiliated Hospital of Stomatology, College of Medicine, Zhejiang University, Hangzhou 310006, China; 2. Dept. of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China; 3. Dept. of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2006-10-25 Revised:2006-10-25 Online:2006-10-20 Published:2006-10-20

摘要:

目的  综合考察不同包埋方法和铸模冷却方式对自制铸钛包埋材料纯钛铸件多种性能的影响。方法  研究自制铸钛包埋材料的一次包埋法和二次包埋法对纯钛铸件的流铸率和全冠铸造精度的影响,以及铸造后铸圈自然冷却方式和骤冷方式对纯钛铸件的反应层、力学性能及全冠铸造精度的影响。结果  一次包埋组和二次包埋组钛铸件的流铸率均为100%,但一次包埋组铸钛全冠适合性较好,达到临床要求。自然冷却组钛铸件表面的反应层厚度(115 μm)较骤冷组(100 μm)厚,铸件强度较骤冷组高(P<0.05),而两组的延伸率无统计学差异:自然冷却组全冠适合性较好,达到临床要求。结论  自制铸钛包埋材料试料宜采用一次包埋法和铸模自然冷却方式。

关键词: 钛, 铸造, 包埋方法, 冷却方式

Abstract:

Objective  To observe the influence of different investing methods and mold cooling methods on pure titanium castings invested in the self-made investment, and to provide theoretic base for the development for the investment. Methods  The influence of investing methods(one-step investing method and two-step investing method) on castability and crown fit of titanium castings were investigated, and the influence of cooling methods on reaction layers, mechanical properties and crown fit of titanium castings were investigated. Results  Both the investing methods exhibited good castability, but only the titanium full crowns by one-step investing method showed clinically acceptable fit. Although the quenching group showed thinner reaction layer(100 μm), lower strength and similar elongation rate, the titanium castings by bench cooling showed clinically acceptable full crown fit with 115 μm thick reaction layer as cast. Conclusion  The one-step investing method and the bench cooling are recommended for the self-made investment.

Key words: titanium, cast, investing method, cooling method