BS PD ISO/TR 28642:2016 identifies three types of topics related to shade conformity and interconvertibilityof monochromatic and polychromatic tissues and materials related to the discipline of dentistry; itdescribes visual and instrumental methods for assessment of these topics.This document suggests interpretation of the findings through colour difference thresholds and providesguidelines for future standardization related to dental shade conformity and interconvertibility. Italso includes guidelines related to colour vision of persons undertaking visual colour assessments andinstructions for reporting of colour and colour difference assessments.Cross References:ISO 1942ISO 11664-1CIE Pub No 15.3ISO 7491:2000ISO 11664-2