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Using Kubelka-Munk reflectance theory to predict optimal pink composite thickness and shade with an opaqued PEEK background for a final gingival color: An in vitro study.
Gouveia, Diogo; Yilmaz, Burak; Cevik, Pinar; Johnston, William Michael.
Afiliación
  • Gouveia D; Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA. Electronic address: Gouveia.5@osu.edu.
  • Yilmaz B; Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA; Departments of Reconstructive Dentistry and Gerodontology, and Restorative, Preventive and Pediatric Dentistry, University of Bern, School of Dental Medicine, Bern, Switzerland.
  • Cevik P; Department of Prosthodontics, School of Dentistry, Gazi University, 06510 Ankara, Turkey.
  • Johnston WM; Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA.
Dent Mater ; 38(9): 1452-1458, 2022 09.
Article en En | MEDLINE | ID: mdl-35798579
OBJECTIVES: The aims of this study were to demonstrate and evaluate how Kubelka-Munk (K-M) reflectance theory is used to adjust the color of the opaqued PEEK backing and the color and thickness of the resin composite layers in different thicknesses in order to minimize the color difference from a target gingival color. METHODS: PEEK specimens were opaqued with either a dark or a light opaquer. Composite resin layers in 3 different colors were fabricated in varying thicknesses. Reflectance of opaqued PEEK and composite layers was determined using a spectroradiometer. Kubelka-Munk (K-M) absorption (K) and scattering (S) coefficients were derived for each material and then K-M reflectance theory was then used to predict the reflectance of each composite disk as layered on each backing. The color of the opaqued PEEK backings alone and the color of 12 pink composite layers on opaqued PEEK backings was calculated for the CIE D65 Illuminant. Composite resins in 3 different color were then bonded to the opaqued PEEK specimens and color differences of these specimens from the theoretical colors were determined. RESULTS: The ∆E00 values ranged from 0.45 to 1.29 units for the bonded pink specimens and the K-M theory. K-M theory was validated as a viable predictor of gingival color using pink composite bonded to opaqued PEEK background. SIGNIFICANCE: Using K-M theory to predict the gingival color of pink composite bonded to opaqued PEEK eliminates the need to make many specimens of different thicknesses that would otherwise be required to find an acceptable color match.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polímeros / Resinas Compuestas Tipo de estudio: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polímeros / Resinas Compuestas Tipo de estudio: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido