华西口腔医学杂志

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氧化锆含量对氧化铝渗透陶瓷半透性的影响

颜志玲1 鲜苏琴1 谭陶1 廖运茂1 杨晓喻2   

  1. 1.口腔疾病研究国家重点实验室, 四川大学, 成都610041; 2.广东省口腔医院种植科, 广州510280
  • 收稿日期:2011-04-25 修回日期:2011-04-25 出版日期:2011-04-20 发布日期:2011-04-20
  • 通讯作者: 颜志玲(1986—),女,江苏人,硕士
  • 作者简介:颜志玲(1986—),女,江苏人,硕士

Influence of zirconia content on translucency of zirconia-toughened alumina glass-infiltrated ceramic

YAN Zhi-ling1, XIAN Su-qin1, TAN Tao1, LIAO Yun-mao1, YANG Xiao-yu2   

  1. 1. State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; 2. Dept. of Implant, Stomatological Hospital of Guangdong Province, Guangzhou 510280, China
  • Received:2011-04-25 Revised:2011-04-25 Online:2011-04-20 Published:2011-04-20
  • Contact: YAN Zhi-ling(1986—),女,江苏人,硕士

摘要:

目的探讨氧化铝渗透陶瓷基体中添加的氧化锆质量分数由0增加至30.0%时,氧化铝渗透陶瓷半透性的变化。方法按氧化锆占基体质量分数的不同,分别设氧化锆质量分数为0、2.5%、5.0%、7.5%、10.0%、20.0%和30.0%共7个组。各组经基体烧结及玻璃渗透后打磨抛光,采用光谱扫描色度仪测量透射率,并用白度色度计测量对比度。结果随着氧化锆质量分数由0增加至30.0%,氧化铝渗透陶瓷的透射率由0.406%降低至0.058%,对比度由0.849±0.005增加至1.015±0.006。氧化锆质量分数为10.0%时,对比度为0.990±0.008;氧化锆质量分数高于10.0%后,透射率的下降趋势及对比度的增高趋势变平缓。结论氧化锆质量分数对氧化铝渗透陶瓷的透光性有直接影响。氧化锆质量分数为10.0%时,氧化铝渗透陶瓷已基本不透光;高于10.0%时,对透光性的影响作用降低。

关键词: 氧化锆, 渗透陶瓷, 半透性, 透射率, 对比度

Abstract:

Objective The objective of this study is to investigate the influence of zirconia content which is 0- 30.0% weight percentage of matrix on translucency of zirconia-toughened alumina glass-infiltrated ceramics. Methods Seven groups were divided according to different weight percentage of zirconia(0, 2.5%, 5.0%, 7.5%, 10.0%, 20.0% and 30.0%). After sintering, infiltrating and polishing, spectral transmittance was determined with spectrophotometer under D65 standard source. Contrast ratio was also tested by whiteness colorimeter. Results With mass fraction of zirconia increasing from 0 to 30.0%, spectral transmittance reduced from 0.406% to 0.058%, while contrast ratio value increased from 0.849±0.005 to 1.015±0.006. When zirconia content was 10.0%, contrast ratio was 0.990±0.008. When it was more than 10.0%, transmission rate of the downward trend and contrast ratio of the rising trend became flat. Conclusion Zirconia content has a direct impact on translucency of zirconia-toughened alumina glass-infiltrated ceramic, which is essentially opaque when zirconia content is 10.0%. When mass fraction of zirconia is more than 10.0%, the influence of zirconia content is reduced.

Key words: zirconia, infiltrated ceramics, translucency, transmittance, contrast ratio