Effect of Optical Properties of Lithium Disilicate Glass Ceramics and Light-Curing Protocols on the Curing Performance of Resin Cement
Abstract
:1. Introduction
2. Materials and Methods
2.1. Specimens Preparation
2.1.1. Preparation of Glass Ceramic Specimens
2.1.2. Preparation of Resin Cement Specimens
2.2. Testing Methods
2.2.1. Determination of the Irradiance
2.2.2. Measurement of Light Transmittance
2.2.3. Degree of Conversion Measurement
2.2.4. Vickers Microhardness Measurement
2.3. Statistical Analysis
3. Results
3.1. Irradiance of the Light-Curing Unit
3.2. Light Transmittance
3.3. Degree of Conversion
3.4. Vickers Microhardness
4. Discussion
5. Conclusions
- (1)
- When the thickness of lithium disilicate glass ceramics is 0.8 mm, the transparency has an influence on the irradiance, ceramic transmittance and the polymerization performance of the light-cured resin cement, and increases with the transparency of lithium disilicate glass-ceramics. Ceramics with high transparency have higher transmittance, less attenuation of irradiance and easier to obtain excellent polymerization properties. The shade of ceramic did not affect the ceramic transmittance and the curing performance of resin cement.
- (2)
- Light-curing protocols affect the polymerization performance of the resin cement. An appropriate increase in irradiance and exposure time can improve curing performance.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Experimental Groups | Low Irradiance Mode (mW/cm2) | High Irradiance Mode (mW/cm2) | |||
---|---|---|---|---|---|
Control | Control | 700 ± 10.00 Aa1 | Attenuation (%) | 1258 ± 8.37 Ba1 | Attenuation (%) |
A2 | HT | 348 ± 8.37 Ab2 | 50.29 | 630 ± 7.07 Bb2 | 49.92 |
A2 | LT | 308 ± 8.37 Ac2 | 56.00 | 468 ± 8.37 Bc2 | 62.80 |
BL2 | HT | 408 ± 8.37 Ab3 | 41.71 | 726 ± 11.40 Bb3 | 42.29 |
BL2 | LT | 330 ± 7.07 Ac3 | 52.86 | 588 ± 8.37 Bc3 | 53.26 |
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Meng, K.; Wang, L.; Wang, J.; Yan, Z.; Zhao, B.; Li, B. Effect of Optical Properties of Lithium Disilicate Glass Ceramics and Light-Curing Protocols on the Curing Performance of Resin Cement. Coatings 2022, 12, 715. https://doi.org/10.3390/coatings12060715
Meng K, Wang L, Wang J, Yan Z, Zhao B, Li B. Effect of Optical Properties of Lithium Disilicate Glass Ceramics and Light-Curing Protocols on the Curing Performance of Resin Cement. Coatings. 2022; 12(6):715. https://doi.org/10.3390/coatings12060715
Chicago/Turabian StyleMeng, Kejing, Lu Wang, Jintao Wang, Zhuoqun Yan, Bin Zhao, and Bing Li. 2022. "Effect of Optical Properties of Lithium Disilicate Glass Ceramics and Light-Curing Protocols on the Curing Performance of Resin Cement" Coatings 12, no. 6: 715. https://doi.org/10.3390/coatings12060715