Translucency of New Lithium Disilicate Ceramics After Ageing and Immersion in Coffee Solution

Abstract

Aim To evaluate translucency parameters of different lithium disilicate glass-ceramic materials after thermocycling and coffee staining. Material and method Three different rectangular-shaped specimens were prepared using three distinct 1.2 mm thick lithium disilicate glass ceramics (IPS e.max CAD, LD_C; Cerec Tessera, LD_A; Initial LiSi Block, LD_F) by using a precision cutting device. All specimens were standardised by polishing with abrasive silicone paper. Thereafter, the specimens were subjected to thermal cycling (5000 cycle, 5-55 C, 30 sn dwell time) and then immersed in coffee solution for 30 days. The colour coordinates of each sample before and after ageing were recorded, and the relative translucency parameter (RTP) was calculated using the CIEDE 2000 formula. The results were then subjected to statistical analysis by one-way ANOVA and a post hoc Tukey test. Results There was a significant difference between the groups in terms of RTP both before and after staining (p<0.001).The LD_A group had the highest RTP value. Before staining, LD_C showed the lowest RTP value, while there was no significant difference between LD_C and LD_F after staining (p=0.781) These findings may guide the selection of materials for esthetically demanding restorations. Conclusion LD_A had the highest RTP value regardless of staining, but only LD_F had an RTP change below the clinically acceptable threshold after coffee staining (ΔRTP=2.10).

Keywords

• Coffee staining
• Dentistry
• Lithium disilicate
• Thermocycling
• Translucency

References

1. Soares VO, Serbena FC, Mathias I, Crovace MC, Zanotto ED. New, tough and strong lithium metasilicate dental glass-ceramic. Ceramics International. 2021;47(2):2793-801.
2. Lohbauer U, Fabris DCN, Lubauer J, Abdelmaseh S, Cicconi M-R, Hurle K, et al. Glass science behind lithium silicate glass-ceramics. Dental Materials. 2024;40(5):842-57.
3. Phark JH, Duarte Jr S. Microstructural considerations for novel lithium disilicate glass ceramics: A review. Journal of Esthetic and Restorative Dentistry. 2022;34(1):92-103.
4. Diken Türksayar AA, Demirel M, Donmez MB. Optical properties, biaxial flexural strength, and reliability of new‐generation lithium disilicate glass‐ceramics after thermal cycling. Journal of Prosthodontics. 2023;32(9):815-20.
5. Wang F, Yu T, Chen J. Biaxial flexural strength and translucent characteristics of dental lithium disilicate glass ceramics with different translucencies. Journal of prosthodontic research. 2019;64(1):71-7.
6. Al-Johani H, Haider J, Silikas N, Satterthwaite J. Effect of surface treatments on optical, topographical and mechanical properties of CAD/CAM reinforced lithium silicate glass ceramics. Dental Materials. 2023;39(9):779-89.
7. Khodaei M, Nejatidanesh F, Savabi O, Tayebi L. Lithium metasilicate glass-ceramic fabrication using spark plasma sintering. Dental Research Journal. 2023;20(1):40.
8. Zhang Y, Guo H, Zhang H, Deng Y, Wang B, Yang J. Effect of added mullite whisker on properties of lithium aluminosilicate (LAS) glass-ceramics prepared for dental restoration. Journal of biomedical nanotechnology. 2018;14(11):1944-52.

9. Fawakhiri HA, Abboud S, Kanout S. A 3‐year controlled clinical trial comparing high‐translucency zirconia (cubic zirconia) with lithium disilicate glass ceramic (e. max). Clinical and Experimental Dental Research. 2023;9(6):1078-88.
10. Abad-Coronel C, Ordoñez Balladares A, Fajardo JI, Martín Biedma BJ. Resistance to fracture of lithium disilicate feldspathic restorations manufactured using a CAD/CAM system and crystallized with different thermal units and programs. Materials. 2021;14(12):3215.
11. TheCERECTesserawebsite. [Available from: https://www.dentsplysirona.com/en-us/categories/restorative/cerec-tessera.html.
12. Simba BG, Ribeiro MV, Alves MFR, Amarante JEV, Strecker K, dos Santos C. Effect of the temperature on the mechanical properties and translucency of lithium silicate dental glass-ceramic. Ceramics International. 2021;47(7):9933-40.
13. Riquieri H, Monteiro JB, Viegas DC, Campos TMB, de Melo RM, Saavedra GdSFA. Impact of crystallization firing process on the microstructure and flexural strength of zirconia-reinforced lithium silicate glass-ceramics. Dental Materials. 2018;34(10):1483-91.
14. Fouda AM, Bourauel C, Samran A, Kassem AS, Alhotan A. Effect of glazing and thermocycling on the fracture toughness and hardness of a New fully crystallized aluminosilicate CAD/CAM ceramic material. BMC Oral Health. 2024;24(1):620.
15. Jurado CA, Afrashtehfar KI, Hyer J, Alhotan A. Effect of sintering on the translucency of CAD–CAM lithium disilicate restorations: A comparative in vitro study. Journal of prosthodontics. 2023;32(9):861-6.
16. Barutçugil Ç, Bilgili D, Barutcigil K, Dündar A, Büyükkaplan UŞ, Yilmaz B. Discoloration and translucency changes of CAD-CAM materials after exposure to beverages. The Journal of Prosthetic Dentistry. 2019;122(3):325-31.
17. Taşın S, Ismatullaev A. Effect of coffee thermocycling on the color and translucency of milled and 3D printed definitive restoration materials. The Journal of Prosthetic Dentistry. 2024;131(5):969. e1-. e7.
18. Schneider LF, Mueller B, Nisie Tango R, Volpato CAM. Effect of coffee staining and simulated oral hygiene methods on the color and translucency of a nanoceramic resin. Journal of Esthetic and Restorative Dentistry. 2024.
19. Elsaka S, Taibah S, Elnaghy A. Effect of staining beverages and bleaching on optical properties of a CAD/CAM nanohybrid and nanoceramic restorative material. BMC Oral Health. 2022;22(1):96.
20. Ellakany P, Aly NM, Alameer ST, Alshehri T, Fouda SM. Assessment of color stability and translucency of various CAD/CAM ceramics of different compositions and Thicknesses: An in vitro study. Saudi Dent J. 2024;36(7):1019-24.
21. Paolone G, Mandurino M, De Palma F, Mazzitelli C, Scotti N, Breschi L, et al. Color stability of polymer-based composite CAD/CAM blocks: a systematic review. Polymers. 2023;15(2):464.
22. Vichi A, Zhao Z, Mutahar M, Paolone G, Louca C. Translucency of Lithium-Based Silicate Glass–Ceramics Blocks for CAD/CAM Procedures: A Narrative Review. Materials. 2023;16(19):6441.
23. Nejatidanesh F, Azadbakht K, Savabi O, Sharifi M, Shirani M. Effect of repeated firing on the translucency of CAD-CAM monolithic glass-ceramics. The Journal of Prosthetic Dentistry. 2020;123(3):530. e1-. e6.
24. Bayindir F, Ozbayram O. Effect of number of firings on the color and translucency of ceramic core materials with veneer ceramic of different thicknesses. The Journal of prosthetic dentistry. 2018;119(1):152-8.
25. Rizk A, Abdou A, Ashraf R, Omar S. Effect of multiple firings on optical and mechanical properties of Virgilite-containing lithium disilicate glass-ceramic of varying thickness. Clinical Oral Investigations. 2024;28(7):1-10.
26. Zaghloul B, Hamdy A, Thabet A. The effect of multiple firing on the color, translucency, and flexural strength of newly introduced lithium disilicate ceramics. Egyptian Dental Journal. 2022;68(3):2519-29.
27. Hallmann L, Ulmer P, Gerngross M-D, Jetter J, Mintrone M, Lehmann F, et al. Properties of hot-pressed lithium silicate glass-ceramics. Dental materials. 2019;35(5):713-29.
28. Freitas JS, Souza LFB, Dellazzana FZ, da Silva TMR, Ribeiro L, Pereira GKR, et al. Advanced lithium disilicate: A comparative evaluation of translucency and fatigue failure load to other ceramics for monolithic restorations. Journal of the Mechanical Behavior of Biomedical Materials. 2023;148:106192.
29. Alayad AS, Alqhatani A, Alkatheeri MS, Alshehri M, AlQahtani MA, Osseil AEB, et al. Effects of CAD/CAM ceramics and thicknesses on translucency and color masking of substrates. The Saudi Dental Journal. 2021;33(7):761-8.
30. Al-Johani H, Haider J, Satterthwaite J, Silikas N. Lithium silicate-based glass ceramics in dentistry: a narrative review. Prosthesis. 2024;6(3):478-505.
31. Dal Piva AMDO, Verhoeff H, da Rosa LS, Pereira GKR, Kleverlaan CJ, Tribst JPM. Optical properties of advanced lithium disilicate. Dental and Medical Problems. 2024.
32. Floriani F, Abuhammoud S, Rojas-Rueda S, Unnadkat A, Fischer NG, Fu C-C, et al. The Influence of Thickness on Light Transmission for Pre-and Fully Crystallized Chairside CAD/CAM Lithium Disilicate Ceramics. Materials. 2024;17(9):2045.