PDF(1046 KB)
Effect of ceramic type and thickness on the masking ability of chairside machinable all-ceramic crowns
Li Sinuo, Zhang Luyao, Liang Shanshan, Liu Yuqiang, Xing Wenzhong
PDF(1046 KB)
PDF(1046 KB)
Effect of ceramic type and thickness on the masking ability of chairside machinable all-ceramic crowns
), Zhang Luyao2, Liang Shanshan3, Liu Yuqiang4, Xing Wenzhong2()Objective This study aimed to evaluate the influence of ceramic type and thickness on the masking ability and final aesthetic effects of chairside machinable all-ceramic crowns. Methods Six kinds from three types chairside machinable ceramic materials (IPS e.max CAD HT/MT/LT, IPS Empress LT, and VITA Suprinity HT/T) in shade A2 were fabricated to slice specimens into 1.0, 1.5, and 2.0 mm-thick sections (n=10). The color parameters of the specimens against black and white tiles and four resin substrates (A2, A4, B3, and C4 shade) were measured with a spectrophotometer. The translucency parameter (TP) was calculated using color parameters measured over standard white and black backgrounds. The color differences (ΔE) were calculated between there substrate shades (A4, B3, C4 ) and A2 shade (control group). Two-way analysis of variance (ANOVA) was performed on the TP values. The two va-riables were ceramic type and ceramic thickness. Three-way ANOVA was used to determine the effects of ceramic materials, ceramic thickness, and substrate shades on the ΔE values, followed by Tukey test for multiple comparisons (α=0.05). Results Ceramic type, ceramic thickness, and substrate shade significantly affected the ΔE values (P<0.001). The L* and b* values of the specimens increased with increasing ceramic thickness, except in substrate A2, whereas the ΔE values decreased. The color difference of all 1.0 mm-thick specimens or all specimens over the substrates C4 shade exceeded the clinically acceptable threshold (ΔE>3.3). Conclusion The masking ability of chairside machinable all-ceramic crowns is influenced by ceramic type and thickness, and ceramic material. The thickness of ceramic less than 2.0 mm cannot mask the gray shade abutment.
chairside machinable ceramic / all-ceramic crown / masking ability / resin background / color diffe-rence
R783.1
| 1 | 包旭东, 高学军. 椅旁CAD/CAM数字化修复[J]. 中国实用口腔科杂志, 2016, 9(6): 321-325. |
| 1 | Bao XD, Gao XJ. Digital dental restoration with chair-side CAD/CAM[J]. Chin J Pract Stomatol, 2016, 9(6): 321-325. |
| 2 | Kang W, Park JK, Kim SR, et al. Effects of core and veneer thicknesses on the color of CAD-CAM lithium disi-licate ceramics[J]. J Prosthet Dent, 2018, 119(3): 461-466. |
| 3 | Ruyter IE, Nilner K, Moller B. Color stability of dental composite resin materials for crown and bridge veneers[J]. Dent Mater, 1987, 3(5): 246-251. |
| 4 | Czigola A, Abram E, Kovacs ZI, et al. Effects of substrate, ceramic thickness, translucency, and cement sha-de on the color of CAD/CAM lithium-disilicate crowns[J]. J Esthet Restor Dent, 2019, 31(5): 457-464. |
| 5 | Alayad AS, Alqhatani A, Alkatheeri MS, et al. Effects of CAD/CAM ceramics and thicknesses on translucency and color masking of substrates[J]. Saudi Dent J, 2021,33(7): 761-768. |
| 6 | Carrabba M, Vichi A, Tozzi G, et al. Cement opacity and color as influencing factors on the final shade of metal-free ceramic restorations[J]. J Esthet Restor Dent, 2022, 34(2): 423-429. |
| 7 | Al-Haj Husain N, Walther L, ?zcan M, et al. Effect of thickness and shade of resin and ceramic-based hybrid materials on color masking abilities and optical performance of CAD/CAM materials[J]. Eur J Prosthodont Restor Dent, 2021, 29(1): 14-21. |
| 8 | Valizadeh S, Mahmoudi Nahavandi A, Daryadar M, et al. The effect of ceramic thickness on opalescence[J]. Clin Exp Dent Res, 2020, 6(6): 693-699. |
| 9 | 杜易敏, 陈丽萍, 佘文珺, 等. 基底色与黏结剂颜色对CAD/CAM全瓷贴面颜色的影响[J]. 上海交通大学学报(医学版), 2016, 36(2): 184-188. |
| 9 | Du YM, Chen LP, She WJ, et al. Effects of color of abutment and resin cement on color of CAD/CAM all-cera-mic veneers[J]. J Shanghai Jiaotong Univ (Med Sci), 2016, 36(2): 184-188. |
| 10 | Kelly JR, Nishimura I, Campbell SD. Ceramics in dentistry: historical roots and current perspectives[J]. J Prosthet Dent, 1996, 75(1): 18-32. |
| 11 | Vichi A, Ferrari M, Davidson CL. Influence of ceramic and cement thickness on the masking of various types of opaque posts[J]. J Prosthet Dent, 2000, 83(4): 412-417. |
| 12 | Juntavee N, Juntavee A, Phetpanompond S. Masking ability of different ceramics upon various underlying structures[J]. J Esthet Restor Dent, 2022, 34(2): 430-439. |
| 13 | Al Ben Ali A, Kang K, Finkelman MD, et al. The effect of variations in translucency and background on color differences in CAD/CAM lithium disilicate glass cerami-cs[J]. J Prosthodont, 2014, 23(3): 213-220. |
| 14 | Tabatabaian F, Khaledi Z, Namdari M. Effect of ceramic thickness and cement type on the color match of high-translucency monolithic zirconia restorations[J]. Int J Prosthodont, 2021, 34(3): 334-340. |
| 15 | Bacchi A, Boccardi S, Alessandretti R, et al. Substrate masking ability of bilayer and monolithic ceramics used for complete crowns and the effect of association with an opaque resin-based luting agent[J]. J Prosthodont Res, 2019, 63(3): 321-326. |
| 16 | Ilie N, Hickel R. Correlation between ceramics translucency and polymerization efficiency through ceramics[J]. Dent Mater, 2008, 24(7): 908-914. |
| 17 | Elsaka SE, Elnaghy AM. Mechanical properties of zirconia reinforced lithium silicate glass-ceramic[J]. Dent Mater, 2016, 32(7): 908-914. |
| 18 | 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. |
| 19 | Dotto L, Soares Machado P, Slongo S, et al. Layering of discolored substrates with high-value opaque composi-tes for CAD-CAM monolithic ceramics[J]. J Prosthet Dent, 2021, 126(1): 128.e1-128.e6. |
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