title: Color adjustment potential of resin composites.
abstract: The study objective was to explore a new method for quantifying the color adjustment potential originating from physical translucency on a set of 7 resin composites, and then for testing the hypothesis that color adjustment potential is dependent on the composites and shades studied. Two-composite specimens (an outer base shade with an inner hole filled with inner test shades) and single-composite specimens of all shades were made. A 1-mm circular area, with its center in the middle of the specimen (P0mm), was measured by means of spectroradiometry. A newly developed equation for quantification of the color adjustment potential was tested. Color adjustment potential at P0mm ranged from -0.19 (negative color adjustment/contrast) to 0.61. Within the limitations of this study, a newly developed concept and equation have proved the existence of the physical component of color adjustment of translucent dental materials. Color adjustment potential was dependent on composite and shade.
authors.affiliation: Deparment of Restoration, University of Texas Dental Branch at Houston, Houston, TX 77030-3402, USA. Rade.Paravina@uth.tmc.edu
authors.forename: R D
authors.initials: RD
authors.lastname: Paravina
authors.forename: S
authors.initials: S
authors.lastname: Westland
authors.forename: W M
authors.initials: WM
authors.lastname: Johnston
authors.forename: J M
authors.initials: JM
authors.lastname: Powers
mesh_terms: D000465:Algorithms; D003188:Composite Resins / Q000737:chemistry*; D017267:Dental Prosthesis Design; D017797:Prosthesis Coloring / Q000592:standards*
chemical_list: D003188:Composite Resins