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VOLUME 22 , ISSUE 12 ( December, 2021 ) > List of Articles

ORIGINAL RESEARCH

Light Transmission for a Novel Chairside CAD/CAM Lithium Disilicate Ceramic

Carlos A Jurado, Clarisa Amarillas-Gastelum, Akimasa Tsujimoto, Saad Alresayes, Kennedee French, Hamid Nurrohman

Keywords : CAD/CAM, Ceramics, Light transmission, Lithium disilicate, Polishing, Thickness

Citation Information : Jurado CA, Amarillas-Gastelum C, Tsujimoto A, Alresayes S, French K, Nurrohman H. Light Transmission for a Novel Chairside CAD/CAM Lithium Disilicate Ceramic. J Contemp Dent Pract 2021; 22 (12):1365-1369.

DOI: 10.5005/jp-journals-10024-3239

License: CC BY-NC 4.0

Published Online: 10-05-2022

Copyright Statement:  Copyright © 2021; The Author(s).


Abstract

Aim: To evaluate light transmission in a novel chairside CAD/CAM lithium disilicate ceramic with different thicknesses and with and without polishing. Materials and methods: Sixty flat samples (10 specimens/group) were fabricated from novel chairside CAD/CAM lithium disilicate ceramic blocks (Amber Mill, Hass Bio) with different thicknesses and with and without polishing as follows: (1) 1.0 mm thickness without polishing (1.0NoP); (2) 1.0 mm thickness with polishing (1.0Po); (3) 1.5 mm thickness without polishing (1.5NoP); (4) 1.5 mm thickness with polishing (1.5Po); (5) 2.0 mm thickness without polishing (2.0NoP); and (6) 2.0 mm thickness with polishing (2.0Po). Specimens were polished with a polishing system for lithium disilicate restorations following the manufacturer\'s recommendations. Light transmission was evaluated with a curing radiometer. Obtained data were subjected to two-way ANOVA followed by Tukey\'s post hoc tests (α = 0.05). SEM observations were conducted to evaluate surface microstructure. Results: The light intensity through the lithium disilicate blocks with and without polishing was 200.9 mW/cm2 (16.1%) and 194.4 mW/cm2 (15.6%) for 1.0 mm specimens, 119.3 mW/cm2 (9.5%) and 111.9 mW/cm2 (9.0%) for 1.5 mm specimens, and 102.3 mW/cm2 (8.2%) and 96.0 mW/cm2 (7.7%) for 2.0 mm specimens. SEM images showed a smoother surface with polishing compared to nonpolished specimens. Conclusion: The thickness and polishing of the restorations were both significant influential factors in light transmission. Clinical significance: The range of light transmission percentage through the novel chairside CAD/CAM lithium disilicate blocks was 7.7–16.1%, suggesting that light attenuation through the material may influence the polymerization reaction of resin luting cement in the bonding process.


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  1. Blatz MB, Conejo J. The current state of chairside digital dentistry and materials. Dent Clin North Am 2019;63(2):175–197. DOI: 10.1016/j.cden.2018.11.002.
  2. Miyazaki T, Hotta Y, Kunii J, et al. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent Mater J 2009;28(1):44–56. DOI: 10.4012/dmj.28.44.
  3. Jurado CA, Mourad F, Felton D, et al. Clinical workflow of two different CAD/CAM systems for veneers manufacture. Eur J Gen Dent 2020;9(3):174–180. DOI: 10.4103/ejgd.ejgd_216_19.
  4. Jurado CA, Tsujimoto A, Watanabe H, et al. Chair-side CAD/CAM fabrication of a single-retainer resin bonded fixed dental prosthesis: a case report. Restor Dent Endod 2020;45(2):e15. DOI: 10.5395/rde.2020.45.e15.
  5. Jurado CA, Tsujimoto A, Punj A, et al. Successful development and implementation of a digital dentistry curriculum at a US dental school. J Oral Sci 2021;63(4):358–360. DOI: 10.2334/josnusd.21-0070.
  6. Moussally C, Fron-Chabouis H, Charrière A, et al. Full-mouth rehabilitation of hypocalcified-type amelogenesis imperfecta with chairside computer-aided design and computer-aided manufacturing: a case report. Oper Dent 2019;44(3):E145–E58. DOI: 10.2341/17-241-T.
  7. Saeidi Pour R, Edelhoff D, Prandtner O, et al. Rehabilitation of a patient with amelogenesis imperfecta using porcelain veneers and CAD/CAM polymer restorations: a clinical report. Quintessence Int 2015;46(10):843–852. DOI: 10.3290/j.qi.a34721.
  8. Sulaiman TA. Materials in digital dentistry–a review. J Esthet Restor Dent 2020;32(2):171–181. DOI: 10.1111/jerd.12566.
  9. Spitznagel FA, Boldt J, Gierthmuehlen PC. CAD/CAM ceramic restorative materials for natural teeth. J Dent Res 2018;97(10): 1082–1091. DOI: 10.1177/0022034518779759.
  10. Jurado CA, Kaleinikova Z, Tsujimoto A, et al. Comparison of fracture resistance for chairside CAD/CAM lithium disilicate crowns and overlays with different designs. J Prosthodont 2021. DOI: 10.1111/jopr.13411.
  11. Chen Y, Yeung AWK, Pow EHN, et al. Current status and research trends of lithium disilicate in dentistry: a bibliometric analysis. J Prosthet Dent 2021;126(4):512–522. DOI: 10.1016/j.prosdent.2020.08.012.
  12. Tian T, Tsoi JK, Matinlinna JP, et al. Aspects of bonding between resin luting cements and glass ceramic materials. Dent Mater 2014;30(7):e147–e162. DOI: 10.1016/j.dental.2014.01.017.
  13. Yin R, Jang YS, Lee MH, et al. Comparative evaluation of mechanical properties and wear ability of five CAD/CAM dental blocks. Materials (Basel) 2019;12(14). DOI: 10.3390/ma12142252.
  14. Clausson C, Schroeder CC, Goloni PV, et al. Fracture resistance of CAD/CAM lithium disilicate of endodontically treated mandibular damaged molars based on different preparation designs. Int J Biomater 2019;2019:2475297. DOI: 10.1155/2019/2475297.
  15. Pereira CN, De Magalhães CS, Daleprane B, et al. LED and halogen light transmission through a CAD/CAM lithium disilicate glass-ceramic. Braz Dent J 2015;26(6):648–653. DOI: 10.1590/0103-6440201300367.
  16. Kilinc E, Antonson SA, Hardigan PC, et al. The effect of ceramic restoration shade and thickness on the polymerization of light- and dual-cure resin cements. Oper Dent 2011;36(6):661–669. DOI: 10.2341/10-206-L.
  17. Zimmermann M, Egli G, Zaruba M, et al. Influence of material thickness on fractural strength of CAD/CAM fabricated ceramic crowns. Dent Mater J 2017;36(6):778–783. DOI: 10.4012/dmj.2016-296.
  18. Janda R, Roulet JF, Kaminsky M, et al. Color stability of resin matrix restorative materials as a function of the method of light activation. Eur J Oral Sci 2004;112(3):280–285. DOI: 10.1111/j.1600-0722.2004.00125.x.
  19. Goldberg M. In vitro and in vivo studies on the toxicity of dental resin components: a review. Clin Oral Investig 2008;12(1):1–8. DOI: 10.1007/s00784-007-0162-8.
  20. Peixoto RT, Paulinelli VM, Sander HH, et al. Light transmission through porcelain. Dent Mater 2007;23(11):1363–1368. DOI: 10.1016/j.dental.2006.11.025.
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