Color changes in dry-pigmented maxillofacial elastomer resulting from ultraviolet light exposure

Mark W Beatty, Gordon K. Mahanna, Kurt Dick, Wenyi Jia

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Abstract

Five dry pigments and one maxillofacial elastomer were, evaluated for color changes (ΔE) resulting from prolonged exposure to two types of ultraviolet light. The elastomer, pigments, and pigmented elastomers were subjected to each ultraviolet light source for 400, 600, and 1800 hours, and ΔE color shifts were determined. The unpigmented elastomer underwent minimally perceptible color change after 600 hours of exposure to both types of ultraviolet light. Two pigments underwent substantial color change after 400 hours, whereas the remaining three pigments remained color stable after 1800 hours. It was concluded that for the materials tested, early color changes in a prosthesis may be the result of degradation of certain ultraviolet light-susceptible pigments, whereas longer term color shifts may be caused by color changes within the elastomer.

Original languageEnglish (US)
Pages (from-to)493-498
Number of pages6
JournalThe Journal of prosthetic dentistry
Volume74
Issue number5
DOIs
Publication statusPublished - Nov 1995

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ASJC Scopus subject areas

  • Oral Surgery

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