Layer-Matched A2 Shade Compatibility Across 3Y/4Y/5Y Multilayer Zirconia: CIEDE2000 Color Differences Correlated with Y2O3 Content (EDS), Phase Constitution (XRD), and Grain Size (FE-SEM)

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:29:43Z
Fecha de publicación2026-01-01
ResumenObjective: This in vitro study aimed to compare the layer-matched color compatibility of three 3Y/4Y/5Y multilayer zirconia grades marketed in shade A2. Materials and Methods: Disc specimens (18 mm × 1.5 mm) were milled from pre-shaded multilayer zirconia blanks (Katana™ Multi-Layered Zirconia; Kuraray Noritake Dental Inc., Tokyo, Japan) in three grades: UTML (5Y), STML (4Y), and HTML (3Y). Twelve discs per grade were polished and measured on a neutral-gray background (Munsell N7) using a dental spectrophotometer (VITA Easyshade Advance 4.0; VITA Zahnfabrik, Bad Säckingen, Germany) at the incisal, middle, and cervical thirds. Color differences were calculated using CIEDE2000 (ΔE00). Yttria content (wt%) was determined using EDS (JSM-7800F; JEOL Ltd., Tokyo, Japan), and phases were assessed using XRD (X’Pert PRO; Malvern Panalytical, Almelo, The Netherlands); microstructure and grain size were examined using FE-SEM after thermal etching. Statistics: A two-way mixed-design ANOVA with Bonferroni adjustment (α = 0.05) was conducted. Results: A significant incisal-to-cervical gradient was observed within each grade (p < 0.001), whereas layer-matched inter-material differences were small (all ΔE00 < 1.0), i.e., below the commonly accepted perceptibility threshold. EDS confirmed the expected stepwise decrease in Y2O3 from UTML to HTML, accompanied by corresponding changes in phase constitution and grain size. Conclusions: Despite compositional and microstructural differences, the three multilayer zirconia grades showed no clinically perceptible layer-matched color differences, supporting their combined use in extended rehabilitations while maintaining the natural-like color gradient across the multilayer blank.es_ES
Doihttps://doi.org/10.3390/dj14040226es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/1707
Idiomaeses_ES
EditorialMDPI AGes_ES
RelaciónDentistry Journales_ES
URL relacionadohttps://doi.org/10.3390/dj14040226es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteDentistry Journal
TítuloLayer-Matched A2 Shade Compatibility Across 3Y/4Y/5Y Multilayer Zirconia: CIEDE2000 Color Differences Correlated with Y2O3 Content (EDS), Phase Constitution (XRD), and Grain Size (FE-SEM)es_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorLuna-Dominguez, Carlos
AutorOliver-Rivas, Suria
AutorCriollo-Barrios, Omaika
AutorGomez-Lara, Gerardo
AutorFigueroa-Lopez, Ricardo
AutorLuna-Dominguez, Jorge
AutorLuna-Dominguez, Carloses_ES
AutorOliver-Rivas, Suriaes_ES
AutorCriollo-Barrios, Omaikaes_ES
AutorGomez-Lara, Gerardoes_ES
AutorFigueroa-Lopez, Ricardoes_ES
AutorLuna-Dominguez, Jorgees_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número4es_ES
Rango de páginas226es_ES
URL relacionadahttps://doi.org/10.3390/dj14040226
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen14es_ES

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