Ghazal Khashayar1, Paul A Bain2, Samira Salari3, Alma Dozic4, Cornelis J Kleverlaan4, Albert J Feilzer4. 1. Department of Dental Materials Science, Academic Center for Dentistry Amsterdam, Amsterdam, The Netherlands; Department of Restorative Dentistry & Biomaterials Sciences, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA. Electronic address: G.Khashayar@acta.nl. 2. Department of Reference and Education Services, Harvard Countway Library of Medicine, 10 Shattuck St., Boston, MA 02115, USA. 3. Department of Restorative Dentistry & Biomaterials Sciences, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA. 4. Department of Dental Materials Science, Academic Center for Dentistry Amsterdam, Amsterdam, The Netherlands.
Abstract
INTRODUCTION: Data on acceptability (AT) and perceptibility thresholds (PT) for colour differences vary in dental literature. There is consensus that the determination of ΔE* is appropriate to define AT and PT, however there is no consensus regarding the values that should be used. The aim of this clinical review was to provide a systematic approach to the topic of colour science of high clinical relevance to dental research. MATERIALS AND METHODS: MEDLINE/PubMed, WoS and EBSCO databases were searched up to January 7, 2013; the outcome was restricted to English, and to clinical studies were spectrophotometers were used for measurement. RESULTS: Forty-eight studies were eligible and met the inclusion criteria. Of the 48 studies there appeared to be a trend in their source references: 44% referred to the same study for the PT (ΔE*=1); and 35% referred to the same article for the AT (ΔE*=3.7). CONCLUSIONS: More than half the studies defined PT as ΔE*=1, and one third of the studies referred to ΔE*=3.7 as the threshold at which 50% of observers accepted the colour difference. Most clinical studies refer to the same few in vitro literature that have attempted to determine PT and AT from decades ago.
INTRODUCTION: Data on acceptability (AT) and perceptibility thresholds (PT) for colour differences vary in dental literature. There is consensus that the determination of ΔE* is appropriate to define AT and PT, however there is no consensus regarding the values that should be used. The aim of this clinical review was to provide a systematic approach to the topic of colour science of high clinical relevance to dental research. MATERIALS AND METHODS: MEDLINE/PubMed, WoS and EBSCO databases were searched up to January 7, 2013; the outcome was restricted to English, and to clinical studies were spectrophotometers were used for measurement. RESULTS: Forty-eight studies were eligible and met the inclusion criteria. Of the 48 studies there appeared to be a trend in their source references: 44% referred to the same study for the PT (ΔE*=1); and 35% referred to the same article for the AT (ΔE*=3.7). CONCLUSIONS: More than half the studies defined PT as ΔE*=1, and one third of the studies referred to ΔE*=3.7 as the threshold at which 50% of observers accepted the colour difference. Most clinical studies refer to the same few in vitro literature that have attempted to determine PT and AT from decades ago.
Authors: Enric Soler; Fernando Duran-Sindreu; Juan Basilio; Miguel Roig; Stefano Ardu; Juan R Mayoral Journal: Clin Oral Investig Date: 2017-01-05 Impact factor: 3.573