北京大学学报（医学版）2018，Vol.50Issue(1)：53-57,5.DOI:10.3969/j.issn.1671-167X.2018.01.009
不同表面处理方法对氧化锆与树脂水门汀粘接强度的影响
Effects of different surface treatments on the zirconia-resin cement bond strength
廖宇 1刘晓强 2陈立 1周建锋 1谭建国1
作者信息
- 1. 北京大学口腔医学院·口腔医院,修复科,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 100081
- 2. 北京大学口腔医学院·口腔医院,综合二科 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 100081
- 折叠
摘要
Abstract
Objective: To evaluate the effects of different surface treatments on the shear bond strength between zirconia and resin cement. Methods: Forty zirconia discs were randomly divided into four groups (10 discs in each group) for different surface treatments: control, no surface treatment; sandblast, applied air abrasion with aluminum oxide particles; ultraviolet (UV),the zirconia sample was placed in the UV sterilizer at the bottom of the UV lamp at 10 mm, and irradiated for 48 h; cold plasma, the discs were put in the cold plasma cabinet with the cold plasma generated from the gas of He for 30 s. Specimens of all the groups were surface treated prior to cementation with Panavia F 2.0 cement. The surface morphology and contact angle of water were measured. The shear bond strengths were tested and the failure modes were examined with a stereomicroscope. Results: Surface morphology showed no difference between the UV/cold plasma group and the control group. Sandblasted zirconia displayed an overall heterogeneous distribution of micropores. The contact angle of the control group was 64. 1° ± 2. 0°. After sandblasting, UV irradiation and cold plasma exposure, the values significantly decreased to 48. 8° ± 2. 6°, 27. 1° ±3. 6° and 32. 0° ± 3. 3°. The values of shear bond strength of the specimens with sandblasted (14. 82 ±2.01) MPa were higher than those with no treatment (9.41 ± 1. 07) MPa with statistically significant difference (P< 0. 05 ). The values of shear bond strength of the specimens with UV irradiation (10.02 ±0.64) MPa were higher than those with no treatment (9.41 ± 1.07) MPa, but without statistically significant difference (P> 0. 05 ). The values of cold plasma group (18. 34 ± 3. 05 ) MPa were significantly higher than those of control group (9. 41 ±1.07) MPa, even more than those with sandblast(14. 82 ±2.01) MPa (P <0. 05). X-ray photoelectron spectroscopy (XPS) showed increase in oxygen (O) and decrease in carbon (C) elements after UV and cold plasma treatment. The surface C/O ratio also decreased after UV and cold plasma treatment. Conclusion: Zirconia specimens treated with UV and cold plasma could significantly improve the hydrophilicity. The surface morphology was unaffected by the UV irradiation and cold plasma treatments. The improvements of ziconia shear bond strength were slight in UV group without statistically significant difference. Cold plasma treatment significantly improved the shear bond strength between zirconia and resin cement.关键词
氧化锆/树脂水门汀/紫外线/等离子/剪切粘接强度Key words
Zirconia/Resin cement/Ultraviolet/Plasma/Shear bond strength分类
医药卫生引用本文复制引用
廖宇,刘晓强,陈立,周建锋,谭建国..不同表面处理方法对氧化锆与树脂水门汀粘接强度的影响[J].北京大学学报（医学版）,2018,50(1):53-57,5.
