Effect of porcelain thickness and substrate on optical properties of porcelain veneers for tetracycline stained teeth

doi:10.19439/j.sjos.2020.02.005

Abstract

Abstract: PURPOSE: To analyze the effect of porcelain layer thicknesses and substrates on color properties and translucency of IPS e.max LT porcelain laminate veneers used to restore tetracycline stained teeth. METHODS: Porcelain specimens with different core and veneer thickness (veneer/core thickness: 0.25 mm/0.25 mm, 0.50 mm/0.25 mm, 0.25 mm/0.50 mm, 0.50 mm/0.50 mm, and 0.25 mm/0.75 mm) were fabricated by heat-press layering technique. CIE L^*a^*b^* parameters were measured under simulated tetracycline backgrounds and black and white backgrounds by a spectrophotometer, color differences ΔE₀₀1 between specimens on simulated tetracycline backgrounds and backgrounds themselves and ΔE₀₀2 between specimens on simulated tetracycline backgrounds and white background were calculated. The translucent parameter(TP) was also calculated. The data were submitted to statistical analysis with SPSS 17.0 software package. RESULTS: ΔE₀₀1 increased with increase of thickness of the core and veneer layer, but there was no significant difference between 0.25 mm and 0.50 mm core thickness groups with 0.50 mm veneer in thickness (P>0.01). Except for light grey, ΔE₀₀2 decreased over other substrates with increase of thickness of the core and veneer layer, but there was no significant difference between 0.50 mm and 0.75 mm core thickness groups with 0.25 mm veneer in thickness (P>0.01). Both ΔE₀₀1 and ΔE₀₀2 were significantly different over different substrates(P<0.01). TP decreased as the increase of core and veneer thickness and TP was significantly different with different core and veneer thickness(P<0.01). CONCLUSIONS: Both the core/veneer thickness and the substrate have significant influence on color matching and masking ability of IPS e.max LT porcelain laminate veneers used to restore tetracycline stained teeth. As for IPS e.max LT porcelain veneers, the color property was the best when yellowish tetracycline stained teeth were restored, while the light grey was worst. The thickness of core and veneer has significant influence on the translucency of porcelain laminate veneers.

Key words: Porcelain laminate veneer, Tetracycline stained teeth, Color, Translucency, Thickness

CLC Number:

R783.1

QIAN Hui-fen, LIN Jia-ru, LIN Yun-hong, WANG Wei-qi, LI Xing-xing. Effect of porcelain thickness and substrate on optical properties of porcelain veneers for tetracycline stained teeth[J]. Shanghai Journal of Stomatology, 2020, 29(2): 133-137.

References

[1] Bagis B, Turgut S.Optical properties of current ceramics systems for laminate veneers[J]. J Dent, 2013, 41(Suppl 3): e24-e30.
[2] 孟玉坤, 宗弋. 瓷贴面修复的研究现状及临床应用[J]. 国际口腔医学杂志, 2017, 44(1): 1-10.
[3] Da Cunha LF, Pedroche LO, Gonzaga CC, et al.Esthetic, occlusal, and periodontal rehabilitation of anterior teeth with minimum thickness porcelain laminate veneers[J]. J Prosthet Dent, 2014, 112(6): 1315-1318.
[4] Turgut S, Bagis B.Colour stability of laminate veneers: An in vitro study[J]. J Dent, 2011, 39(Suppl 3): e57-e64.
[5] 钱海馨, 张修银, 杨丹苓. IPS-EMPRESSⅡ全瓷修复变色牙的临床效果[J]. 国际口腔医学杂志, 2011, 38(3): 274-276.
[6] Chen JH, Shi CX, Wang M, et al.Clinical evaluation of 546 tetracycline-stained teeth treated with porcelain laminate veneers[J]. J Dent, 2005, 33(1): 3-8.
[7] Kurklu D, Azer SS, Yilmaz B, et al.Porcelain thickness and cement shade effects on the colour and translucency of porcelain veneering materials[J]. J Dent, 2013, 41(11): 1043-1050.
[8] Umehara K, Ajima Y, Sato K, et al.Study on the enamel thickness of the anterior teeth of the Japanese. Preparation for the laminate veneer technique[J]. Nihon Hotetsu Shika Gakkai Zasshi, 1990, 34(4): 757-765.
[9] Xing W, Chen X, Ren D, et al.The effect of ceramic thickness and resin cement shades on the color matching of ceramic veneers in discolored teeth[J]. Odontology, 2017, 105(4): 460-466.
[10] 潘祁. 模拟四环素牙瓷贴面修复体的色彩学实验研究[D]. 西安:第四军医大学, 2010.
[11] Mello HS.The mechanism of tetracycline staining in primary and permanent teeth[J]. J Dent Child, 1967, 34(6): 478-487.
[12] 阮丹平, 钱程辉, 张修银, 等. 四环素着色前牙色度学分布特征的检测分析[J]. 上海口腔医学, 2006, 15(6): 567-570.
[13] Botelho MG, Chan AWK, Newsome PRH, et al.A randomized controlled trial of home bleaching of tetracycline-stained teeth[J]. J Dent, 2017, 67(1): 29-35.
[14] Alqahtani MQ, Aljurais RM, Alshaafi MM.The effects of different shades of resin luting cement on the color of ceramic veneers[J]. Dent Mater J, 2012, 31(3): 354-361.
[15] Barizon KT, Bergeron C, Vargas MA, et al.Ceramic materials for porcelain veneers: part II. Effect of material, shade, and thickness on translucency[J]. J Prosthet Dent, 2014, 112(4): 864-870.
[16] Calamia JR, Calamia CS.Porcelain laminate veneers: reasons for 25 years of success[J]. Dent Clin North Am, 2007, 51(2): 399-417.
[17] Begum Z, Chheda P, Shruthi CS, et al.Effect of ceramic thickness and luting agent shade on the color masking ability of laminate veneers[J]. J Indian Prosthodont Soc, 2014, 14(Suppl 1): 46-50.
[18] Shono NN, Al Nahedh HN.Contrast ratio and masking ability of three ceramic veneering materials[J]. Oper Dent, 2012, 37(4): 406-416.
[19] 聂廷洪, 孙迎春, 郑琳, 等. 瓷贴面厚度及试色糊剂对IPS e.max铸瓷贴面色彩效果的影响[J]. 口腔颌面修复学杂志, 2015, 16(2): 97-100.
[20] Tabatabaian F, Taghizade F, Namdari M.Effect of coping thickness and background type on the masking ability of a zirconia ceramic[J]. J Prosthet Dent, 2018, 119(1): 159-165.
[21] Shiraishi T, Watanabe I.Thickness dependence of light transmittance, translucency and opalescence of a ceria-stabilized zirconia/alumina nanocomposite for dental applications[J]. Dent Mater, 2016, 32(5): 660-667.
[22] Sari T, Ural C, Yuzbasioglu E, et al.Color match of a feldspathic ceramic CAD-CAM material for ultrathin laminate veneers as a function of substrate shade, restoration color, and thickness[J]. J Prosthet Dent, 2018, 119(3): 455-460.
[23] Azer SS, Rosenstiel SF, Seghi RR, et al.Effect of substrate shades on the color of ceramic laminate veneers[J]. J Prosthet Dent, 2011, 106(3): 179-183.
[24] Chaiyabutr Y, Kois JC, Lebeau D, et al.Effect of abutment tooth color, cement color, and ceramic thickness on the resulting optical color of a CAD/CAM glass-ceramic lithium disilicate-reinforced crown[J]. J Prosthet Dent, 2011, 105(2): 83-90.
[25] Ghinea R, Perez MM, Herrera LJ, et al.Color difference thresholds in dental ceramics[J]. J Dent, 2010, 38(Suppl 2): e57-64.
[26] Chu SJ, Mieleszko AJ.Color-matching strategies for non-vital discolored teeth: part 1. Laboratory ceramic veneer fabrication solutions[J]. J Esthet Restor Dent, 2014, 26(4): 240-246.
[27] Turgut S, Bagis B.Effect of resin cement and ceramic thickness on final color of laminate veneers: An in vitro study[J]. J Prosthet Dent, 2013, 109(3): 179-186.
[28] Wang F, Takahashi H, Iwasaki N.Translucency of dental ceramics with different thicknesses[J]. J Prosthet Dent, 2013, 110(1): 14-20.