The Effect of Ceramic Thickness on Opalescence

Overview

Journal Clin Exp Dent Res

Publisher Wiley

Specialty Dentistry

Date 2020 Sep 9

PMID 32902165

Citations 8

Authors

Sara Valizadeh

Alireza Mahmoudi Nahavandi

Marzieh Daryadar

Mutlu Ozcan

Sedighe Sadat Hashemikamangar

Affiliations

Soon will be listed here.

Abstract

Objectives: Creating a tooth-like appearance by use of dental ceramics is still a challenge. Opalescence is a unique property of dental enamel, attempted to be mimicked by dental restorative materials. This study aimed to assess the effect of ceramic thickness on opalescence.

Materials And Methods: Twenty-four discs were fabricated of feldspathic ceramic, IPS e.max, zirconia and Enamic ceramics with 10 mm diameter and 0.5 and 1 mm thicknesses (n = 12). The opalescence of ceramic specimens was calculated by measuring the difference in yellow-blue axis (CIE ∆b*) and red-green axis (CIE ∆a*) between the transmitted and reflected spectra. One-way ANOVA was applied to compare the opalescence of different ceramic specimens with variable thicknesses at .05 level of significance.

Results: The opalescence of feldspathic, IPS e.max, zirconia and Enamic ceramic specimens with 0.5 mm thickness was 1.06 ± 0.15, 3.39 ± 0.15, 1.98 ± 0.15 and 1.44 ± 0.15, respectively. By increasing the thickness to 1 mm, the opalescence of feldspathic, IPS e.max, zirconia and Enamic ceramics changed to 1.12 ± 0.15, 1.47 ± 0.15, 3.85 ± 0.15 and 2.00 ± 0.15, respectively. In all groups except for IPS e.max, the mean opalescence of 1-mm-thick specimens was higher than that of 0.5-mm-thick specimens.

Conclusion: Type and thickness of ceramic affect its opalescence. The opalescence of all ceramic specimens tested in this study with 0.5 and 1 mm thicknesses was lower than that of the enamel.

Citing Articles

Effects of porcelain layer thickness and luting resin cement on the opalescence properties of porcelain veneers.

Li Z, Chen Y, Fu W, Shi C, Lin Y, Wu J BMC Oral Health. 2024; 24(1):1243.

PMID: 39425104 PMC: 11490024. DOI: 10.1186/s12903-024-04957-5.

Effect of core and veneer porcelain thickness and resin cement on opalescence property of glass-ceramic veneers.

Li Z, Ma W, Yang S, Yang Q, Wang J, Yao Z Hua Xi Kou Qiang Yi Xue Za Zhi. 2024; 40(4):403-408.

PMID: 38596955 PMC: 9396420. DOI: 10.7518/hxkq.2022.04.005.

Effect of ceramic type and thickness on the masking ability of chairside machinable all-ceramic crowns.

Li S, Zhang L, Liang S, Liu Y, Xing W Hua Xi Kou Qiang Yi Xue Za Zhi. 2024; 42(1):56-61.

PMID: 38475951 PMC: 10965345. DOI: 10.7518/hxkq.2024.2023263.

Effect of various post-curing light intensities, times, and energy levels on the color of 3D-printed resin crowns.

Sahrir C, Ruslin M, Lee S, Lin W J Dent Sci. 2024; 19(1):357-363.

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An engineering perspective of ceramics applied in dental reconstructions.

Pereira R, Ribas R, Montanheiro T, Schatkoski V, Rodrigues K, Kito L J Appl Oral Sci. 2023; 31:e20220421.

PMID: 36820784 PMC: 9972857. DOI: 10.1590/1678-7757-2022-0421.

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