Effect of Three Different Core Materials on Masking Ability of a Zirconia Ceramic
,
Abstract
Objectives: Masking ability of a restorative material plays a role in hiding colored substructures; however, the masking ability of zirconia ceramic (ZRC) has not yet been clearly understood in zirconia-based restorations. This study evaluated the effect of three different core materials on masking ability of a ZRC.
Materials and Methods: Ten zirconia disc samples, 0.5mm in thickness and 10mm in diameter, were fabricated. A white (W) substrate (control) and three substrates of nickel-chromium alloy (NCA), non-precious gold alloy (NPGA), and ZRC were prepared. The zirconia discs were placed on the four types of substrates for spectrophotometry. The L*, a*, and b* values of the specimens were measured by a spectrophotometer and color change (ΔE) values were calculated to determine color differences between the test and control groups and were then compared with the perceptual threshold. Randomized block ANOVA and Bonferroni test analyzed the data. A significance level of 0.05 was considered.
Results: The mean and standard deviation values of ΔE for NCA, NPGA, and ZRC groups were 10.26±2.43, 9.45±1.74, and 6.70±1.91 units, respectively. Significant differences were found in the ΔE values between ZRC and the other two experimental groups (NCA and NPGA; P<0.0001 and P=0.001, respectively). The ΔE values for the groups were more than the predetermined perceptual threshold.
Conclusions: Within the limitations of this study, it was concluded that the tested ZRC could not well mask the examined core materials.
- Walton TR. An up to 15-year longitudinal study of 515 metalceramic FPDs: Part 1. Outcome. Int J Prosthodont. 2002 Sep-Oct;15(5):439-45.
- Näpänkangas R, Raustia A. Twenty-year follow-up of metal-ceramic single crowns: a retrospective study. Int J Prosthodont. 2008 Jul-Aug;21(4):307-11.
- Heffernan MJ, Aquilino SA, Diaz-Arnold AM, Haselton DR, Stanford CM, Vargas MA. Relative translucency of six all-ceramic systems. Part I: core materials. J Prosthet Dent. 2002 Jul;88(1):4-9.
- Heffernan MJ, Aquilino SA, Diaz-Arnold AM, Haselton DR, Stanford CM, Vargas MA. Relative translucency of six all-ceramic systems. Part II: core and veneer materials. J Prosthet Dent. 2002 Jul;88(1):10-5.
- Vichi A, Louca C, Corciolani G, Ferrari M. Color related to ceramic and zirconia restorations: a review. Dent Mater. 2011 Jan;27(1):97-108.
- Raigrodski AJ. Contemporary materials and technologies for allceramic fixed partial dentures: a review of the literature. J Prosthet Dent. 2004 Dec;92(6):557-62.
- Luthardt RG, Holzhüter M, Sandkuhl O, Herold V, Schnapp JD, Kuhlisch E, et al. Reliability and properties of ground Y-TZP-zirconia ceramics. J Dent Res. 2002 Jul;81(7):487-91.
- Chu FC, Chow TW, Chai J. Contrast ratios and masking ability of three types of ceramic veneers. J Prosthet Dent. 2007 Nov;98(5):359-64.
- Swain VL, Pesun IJ, Hodges JS. The effect of metal ceramic restoration framework design on tooth color. J Prosthet Dent. 2008 Jun;99(6):468-76.
- Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res. 1989 Dec;68(12):1760-4.
- Douglas RD, Steinhauer TJ, Wee AG. Intraoral determination of the tolerance of dentists for perceptibility and acceptability of shade mismatch. J Prosthet Dent. 2007 Apr;97(4):200-8.
- Lindsey DT, Wee AG. Perceptibility and acceptability of CIELAB color differences in computer-simulated teeth. J Dent. 2007 Jul;35(7): 593-9.
- Ishikawa-Nagai S, Yoshida A, Sakai M, Kristiansen J, Da Silva JD. Clinical evaluation of perceptibility of color differences between natural teeth and all-ceramiccrowns. J Dent. 2009;37 Suppl 1:e57-63.
- Ghinea R, Pérez MM, Herrera LJ, Rivas MJ, Yebra A, Paravina RD. Color difference thresholds in dental ceramics. J Dent. 2010;38 Suppl 2:e57-64.
- Fabbri G, Mancini R, Marinelli V, Ban G. Anterior discolored teeth restored with procera all-ceramic restorations: a clinical evaluation of the esthetic outcome based on the thickness of the core selected. Eur J Esthet Dent. 2011 Spring;6(1):76-86.
- Zhang F, Heydecke G, Razzoog ME. Double-layer porcelain veneers: effect of layering on resulting veneer color. J Prosthet Dent. 2000 Oct;84(4):425-31.
- Chen YM, Smales RJ, Yip KH, Sung WJ. Translucency and biaxial flexural strength of four ceramic core materials. Dent Mater. 2008 Nov;24 (11):1506-11.
- Lee YK, Cha HS, Ahn JS. Layered color of all-ceramic core and veneer ceramics. J Prosthet Dent. 2007 May;97(5):279-86.
- Suputtamongkol K, Tulapornchai C, Mamani J, Kamchatphai W, Thongpun N. Effect of the shades of background substructures on the overall color of zirconia-based all-ceramic crowns. J Adv Prosthodont. 2013 Aug;5(3):319-25.
- Choi YJ, Razzoog ME. Masking ability of zirconia with and without veneering porcelain. J Prosthodont. 2013 Feb;22(2):98-104.
- Vichi A, Ferrari M, Davidson CL. Influence of ceramic and cement thickness on the masking of various types of opaque posts. J Prosthet Dent. 2000 Apr;83(4):412-7.
- Oh SH, Kim SG. Effect of abutment shade, ceramic thickness, and coping type on the final shade of zirconia all-ceramic restorations: in vitro study of
color masking ability. J Adv Prosthodont. 2015 Oct;7(5):368-74.
- Fazi G, Vichi A, Ferrari M. Influence of four different cements on the color of zirconia structures of varying ceramic thickness. Int Dent SA. 2006; 8: 20-6.
- Sinmazisik G, Demirbas B, Tarcin B. Influence of dentin and core porcelain thickness on the color of fully sintered zirconia ceramic restorations. J Prosthet Dent. 2014 Feb;111(2):142-9.
- Son H, Kim WC, Jun SH, Kim YS, Ju SW, Ahn JS. Influence of dentin porcelain thickness on layered all-ceramic restoration color. J Dent. 2010;38 Suppl 2:e71-7.
- Barão VA, Gennari-Filho H, Goiato MC, dos Santos DM, Pesqueira AA. Factors to achieve aesthetics in all-ceramic restorations. J Craniofac Surg. 2010 Nov;21(6):2007-12.
- 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. J Adv Prosthodont. 2011 Jun;3(2):57-62.
- Llena C, Lozano E, Amegual J, Forner L. Reliability of two color selection devices in matching and measuring tooth color. J Contemp Dent Pract. 2011 Jan 1;12(1):19-23.
- Chang J, Da Silva JD, Sakai M, Kristiansen J, Ishikawa-Nagai S. The optical effect of composite luting cement on all ceramic crowns. J Dent. 2009 Dec;37(12):937-43.
- Denry I, Kelly JR. State of the art of zirconia for dental applications. Dent Mater. 2008 Mar;24(3): 299-307
| Files | ||
| Issue | Vol 13, No 5 (2016) | |
| Section | Original Article | |
| Keywords | ||
| Color Spectrophotometry Visual Perception Yttria Stabilized Tetragonal Zirconia | ||
| Rights and permissions | |
|
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
