INVESTIGATION OF THE EFFECT OF DIFFERENT COLORS OF DENTIN AND OPAQUE PORCELAIN ON THE FINAL COLOR INDICES OF METAL-CERAMIC RESTORATION
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Keywords
Color, Dental porcelains, , Metal-ceramic restorations
Abstract
Background and Aim: The main challenge in restorative dentistry is to match the color of metal-ceramic restorations with adjacent teeth. This study aimed to investigate the final color of metal-ceramic restorations by combining two different colors of opaque porcelain and dentin.
Materials and Method: An experimental study was conducted using 160 samples of base metal alloys covered with opaque and dentin (Noritake) in four different colors (A1, B2, D3,C4). The “L*”, “a*”, and “b*” values of the samples were evaluated using a spectrophotometer, and the color difference (ΔE) between the samples, Vitapan 3D Master, and Vitapan shade guide was obtained. The data were analyzed using one-way analysis of variance(ANOVA) and the Tukey post hoc test.
Results: The lightness of the samples varied depending on the combination of opaque and dentin. The samples with different opaque’s covered with dentin C4 had the least lightness, while the samples with different opaque’s covered with dentin A1 had the highest lightness, except for the C4A1 group. The “a” value was the least in groups with different opaques covered with dentin A1, except for the opaque D3 group, and the most was in groups with different opaques covered with dentin C4. The “b” value was the least in different opaques covered with dentin A1 and the most in different opaques covered with dentin C4.
Conclusion: The final color of metal-ceramic restorations made with opaques A1, C4, and B2 was significantly influenced by the dentin color, except for the C4B2 group, while the opaque color was the main determinant of the final color in the groups with opaque D3, except for the D3B2 group. The colors achieved in this study had clinically acceptable differences with the Vita 3D Master shade guide compared to the Vitapan shade guide. These findings provide valuable insights for clinicians in achieving optimal color matching in metal-ceramic restorations.
References
2. Cal E, Güneri P, Kose T. Comparison of digital and spectrophotometric measurements of colour shade guides. Journal of oral rehabilitation. 2006;33(3):221-8 .
3. Bachhav VC, Aras MA. The effect of ceramic thickness and number of firings on the color of a zirconium oxide based all ceramic system fabricated using CAD/CAM technology. The journal of advanced prosthodontics. 2011;3(2):57-62.
4. Ghafoor R, Rahman M, Siddiqui AA. Comparison of convergence angle of prepared teeth for full veneer metal ceramic crowns. J Coll Physicians Surg Pak. 2011;21(1):8-15.
5. Falahchai SM, Zeighami S, Hemmati YB. Main Factors affecting the final color of ceramic restorations. J Prosthet Dent. 2017;105(2):83-90
6. Barghi N. Color and glaze: effects of repeated firings. The Journal of prosthetic dentistry. 1982;47(4):393-5.
7. Jacobs S, Goodacre C, Moore B, Dykema R. Effect of porcelain thickness and type of metal-ceramic alloy on color. Journal of Prosthetic Dentistry. 1987;57(2):138-45.
8. Jorgenson MW, Goodkind RJ. Spectrophotometric study of five porcelain shades relative to the dimensions of color, porcelain thickness, and repeated firings. Journal of Prosthetic Dentistry. 1979;42(1):96-105.
9. Barghi N, Lorenzana RE. Optimum thicknesses of opaque and body porcelain. The Journal of prosthetic dentistry. 1982;48(4):429-31.
10. Barghi N, Pedrero JAF, Bosch RR. Efects of batch variation on shade of dental porcelain. Journal of Prosthetic Dentistry. 1985;54(5):625-7.
11. Ozcelik TB, Yilmaz B, Ozcan I, Kircelli C. Colorimetric analysis of opaque porcelain fired to different base metal alloys used in metal ceramic restorations. The Journal of prosthetic dentistry. 2008;99(3):193-202.
12. Anitha K, Dhanraj M, Haribabu R. Comparison of the effect of different ceramic alloys and porcelain systems upon the color of metal–ceramic restorations: an in vitro study. The Journal of Indian Prosthodontic Society. 2013;13(3):296-302.
13. Sproull RC. Color matching in dentistry. Part I. The three-dimensional nature of color. Journal of Prosthetic Dentistry. 2001;86(5):453-7.
14. Manimaran P, Sadan DS. An in vitro study to evaluate the difference in shade between commercially available shade guides and glazed porcelain. Journal ofpharmacy & bioallied sciences. 2016;8(1):110-5.
15. Turkan L, Turkan M. The effect of one step poblishing system on the surface roughness of three esthetic resin Composite materials. Operative Dent UW.2004;29(2):203-11.
16. Pieper CM, Waldemarin RF, Camacho GB. Masking ability of opaque thickness on layered metal-ceramic. Acta Odontológica Latinoamericana. 2016;29(2):162-7
17. Corciolani G, Vichi A, Goracci C, Ferrari M. Colour correspondence of a ceramic system in two different shade guides. Journal of dentistry. 2009;37(2):98-101.
18. Loana- sofia Pop Ciutrilla,Razvan Ghinea,HoratiuA.Colosi.Color compatibility between dental structures and three different types of ceramic system.BMC Oral Health.2021;21(1):21-75.
19. Pravinya Sam, V. Suresh, Dhanraj Ganapathy. Evaluation of variation in shade in metal-ceramic restoration from the shade tab.The Journal of Drug Invention Today .2019;11(9):2100-3
20. Patel KA, Mathur S, Upadhyay S. A comparative evaluation of bond strength of feldspathic porcelain to nickel-chromium alloy, when subjected to various surface treatments: An in vitro study. The Journal of the Indian Prosthodontic Society. 2015;15(1):53-7
21. Nokar S, Moradian S. A comparison and assessment on various color dimensions from two base metal alloys in ceramometal disks. Journal of Dental Medicine. 2003;16(4):16-24
22. Color technology in the textile industry, second edition. Color Research & Application. 1999;24(5):380-90.
23. Browning WD, Contreras-Bulnes R, Brackett MG, Brackett WW. Color differences: polymerized composite and corresponding Vitapan Classical shade tab. Journal of dentistry. 2009;37(1):34-9.
24. Okubo SR, Kanawati A, Richards MW, Childressd S. Evaluation of visual and instrument shade matching. The Journal of prosthetic dentistry. 1998;80(6):642-8.
25. Johnston W, Kao E. Assessment of appearance match by visual observation and clinical colorimetry. Journal of dental research. 1989;68(5):819-22.
26. Douglas RD, Steinhauer TJ, Wee AG. Intraoral determination of the tolerance of dentists for perceptibility and acceptability of shade mismatch. The Journal of prosthetic dentistry. 2007;97(4):200-8.
27. Li Q, Yu H, Wang Y. Spectrophotometric evaluation of the optical influence of core build-up composites on all-ceramic materials. Dental Materials. 2009;25(2):158-65.
28. Nakamura T, Saito O, Fuyikawa J, Ishigaki S. Influence of abutment substrate and ceramic thickness on the colour of heat‐pressed ceramic crowns. Journal of oral rehabilitation. 2002;29(9):805-9
29. Fazi G, Vichi A, Corciolani G, Ferrari M. Spectrophotometric evaluation of color match to VITA classical shade guide of four different veneering porcelain systems for metal ceramic restorations. American journal of dentistry. 2009;22(1):19-22.
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Fahimeh Hamedi Rad
Department of Prosthodontics, Dental materials research center, Health research institute Babol university of medical sciences. Babol, Iran.
Maral Mokhberi
Department of Prosthodontics, Student Research Committee, Babol University of Medical Sciences, Babol, Iran
Foruzesh, Shirgahi Talari
Department of Prosthodontics, Dental materials research center, Health research institute Babol university of medical sciences. Babol, Iran
Niloofar Ghanipour
Department of Prosthodontics, Oral Health Research Center, Health Research Institute, Babol, Iran.
Massoumeh Behzadian
Department of Prosthodontics, Oral Health Research Center, Health Research Institute, Babol, Iran.
Mahsa Abbasian
Department of Prosthodontics, Oral Health Research Center, Health Research Institute, Babol, Iran.
Mehrnoosh Oladzad Abbasabdi
Department of Prosthodontics, Oral Health Research Center, Health Research Institute, Babol, Iran.
Faraneh Mokhtarpour
Department of Prosthodontics, Oral Health Research Center, Health Research Institute, Babol, Iran.