Tooth DiscolorationFood PackagingColorArgyriaPigmentation DisordersNail DiseasesFood TechnologyCatechol OxidaseAlkaptonuriaBenzydamineIndigo CarminePigmentationDental PolishingComposite ResinsImmersionDental MaterialsCorrosionTooth, ArtificialMeatTooth CrownDental VeneersTrimethylsilyl CompoundsColorimetryFood PreservationCoffeeFlammulinaPolyvinyl ChloridePolymethacrylic AcidsMaterials TestingScapulaRibsDental EnamelHumerusTeaTitaniumLeast-Squares AnalysisSurface PropertiesInjections, IntramuscularWaterMicroscopy, Electron, ScanningCattleTime FactorsSpectrophotometryAnalysis of Variance