The effect of Er: YAG laser irradiation on bonding properties of IPS e.max CAD ceramics
10.12016/j.issn.2096-1456.2018.02.005
- Author:
HOU Yepo
1
;
SHEN Renze
2
;
CHEN Luyuan
1
;
CHEN Yi
3
;
JIANG Yingtong
4
;
LI Jingmei
4
;
GAO Jie
4
Author Information
1. Department of Stomatology, Nanfang Hospital of Southern Medical University
2. Department of Stomatology, Zhongshan Hospital, Xiamen University
3. Department of Orthopedics Surgery, 1 st Affiliated Hospital of Guangzhou Medical University, Guangdong Provincial Key Lab of Orthopedics Technology and Implant Materials
4. Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University
- Publication Type:Journal Article
- Keywords:
Er: YAG laser;
IPS e.max CAD;
Bonding strength;
Atomic force microscope;
Microphology
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2018;26(2):95-98
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate different Er:YAG laser power settings on the bonding properties of IPS e.max CAD ceramics.
Methods : 96 IPS e.max CAD ceramics blocks (5 mm × 5 mm × 5 mm) were prepared and randomly divided into 8 groups (n = 12), the untreated blocks served as the control, while one of the experimental groups was treated with 4.5% HF for 20 seconds, six remaining test group (C、D、E、F、G、H) were treated with different Er: YAG laser power settings: 100 mJ、200 mJ、300 mJ、400 mJ、500 mJ and 600 mJ. Morphology of the ceramic surface was observed by atomic force microscopy and its shear bond strength (SBS) was tested.
Results :Higher shear bond strength values were found in group C-H compared to group B, the highest is group F (24.12 ± 1.91) MPa. The difference was statistically significant. The atomic force microscope observation of the surface structure showed that the control group was smooth and flat, and the HF-like etching group formed a uniform needle-like convex structure. The laser group gradually formed a regularly arranged cylindrical convex structure, in which the surface of the G and H groups was damaged.
Conclusion: The Er: YAG laser power settings of 400 mJ can be used as an effective pretreatment method before bonding of IPS e.max CAD ceramic.
- Full text:Er：YAG激光照射对可切削二硅酸锂增强型玻璃陶瓷粘接性能的影响.pdf
