The Light Reflection Changes of Monolithic Zirconia and Lithium Disilicate after Using Two External Staining Kits following by Thermocycling.

Autor: Dolve E; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Ben-Izhack G; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Meirowitz A; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Erel H; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Rosner O; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Biadsee A; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Lugassy D; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel., Shely A; Department of Oral Rehabilitation, the Maurice and Gabriela Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel.
Jazyk: angličtina
Zdroj: Materials (Basel, Switzerland) [Materials (Basel)] 2023 Mar 02; Vol. 16 (5). Date of Electronic Publication: 2023 Mar 02.
DOI: 10.3390/ma16052057
Abstrakt: Background: The purpose of the study was to evaluate the changes of light reflection% on two materials (monolithic zirconia and lithium disilicate) after using two external staining kits following by thermocycling.
Methods: Specimens were sectioned from monolithic zirconia (n = 60) and lithium disilicate ( n = 60) then divided into six groups ( n = 20). Two different types of external staining kits were used and applied to the specimens. The light reflection% was measured before staining, after staining and after thermocycling using a spectrophotometer.
Results: The light reflection% of zirconia was significantly higher compared to lithium disilicate at the beginning of the study ( p = 0.005), after staining with kit 1 ( p = 0.005) and kit 2 ( p = 0.005) and after thermocycling ( p = 0.005). For both materials, the light reflection% was lower after staining with Kit 1 compared to kit 2 ( p < 0.043). After thermocycling, the light reflection% of lithium disilicate increased ( p = 0.027) and was unchanged with Zirconia ( p = 0.527).
Conclusions: There is a difference between the materials regarding light reflection% as the monolithic zirconia showed higher light reflection% comparing lithium disilicate throughout the entire experiment. For lithium disilicate, we recommend using kit 1 as we found that, after thermocycling, the light reflection% of kit 2 was increased.
Databáze: MEDLINE
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