Discoloration of coating resins exposed to staining solutions in vitro

Atsufumi Manabe; Yukiyo Kato; Werner J. Finger; Masafumi Kanehira; Masashi Komatsu

doi:10.4012/dmj.28.338

Discoloration of coating resins exposed to staining solutions in vitro

Atsufumi Manabe, Yukiyo Kato, Werner J. Finger, Masafumi Kanehira, Masashi Komatsu

DEN - Dental Sciences

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The purpose of this in vitro investigation was to study the effects of coffee and tea immersion on surface discoloration of one commercial temporary resin coating material, White Coat (WHC; Kuraray Medical Inc., Tokyo, Japan), and an experimental one, SI-R20209 (SIR; Shofu Inc., Kyoto, Japan). Disk-shaped specimens were prepared, their colors were determined at baseline, and after immersion in water (control), tea and coffee solutions for 24, 48, and 72 hours. Very little discoloration was found with the water-stored specimens. Staining response was most pronounced after coffee immersion for White Coat and after tea immersion for the experimental material, exceeding the clinically acceptable discoloration threshold value of δE=3.3. However, most of the resin shades tested are likely to be sufficiently safe against heavy discoloration when used for short-term restoration only.

Original language	English
Pages (from-to)	338-343
Number of pages	6
Journal	Dental materials journal
Volume	28
Issue number	3
DOIs	https://doi.org/10.4012/dmj.28.338
Publication status	Published - 2009 May

Keywords

Coating resin
In vitro color stability
Staining resistance

ASJC Scopus subject areas

Ceramics and Composites
Dentistry(all)

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10.4012/dmj.28.338

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abstract = "The purpose of this in vitro investigation was to study the effects of coffee and tea immersion on surface discoloration of one commercial temporary resin coating material, White Coat (WHC; Kuraray Medical Inc., Tokyo, Japan), and an experimental one, SI-R20209 (SIR; Shofu Inc., Kyoto, Japan). Disk-shaped specimens were prepared, their colors were determined at baseline, and after immersion in water (control), tea and coffee solutions for 24, 48, and 72 hours. Very little discoloration was found with the water-stored specimens. Staining response was most pronounced after coffee immersion for White Coat and after tea immersion for the experimental material, exceeding the clinically acceptable discoloration threshold value of δE=3.3. However, most of the resin shades tested are likely to be sufficiently safe against heavy discoloration when used for short-term restoration only.",

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AU - Manabe, Atsufumi

AU - Kato, Yukiyo

AU - Finger, Werner J.

AU - Kanehira, Masafumi

AU - Komatsu, Masashi

PY - 2009/5

Y1 - 2009/5

N2 - The purpose of this in vitro investigation was to study the effects of coffee and tea immersion on surface discoloration of one commercial temporary resin coating material, White Coat (WHC; Kuraray Medical Inc., Tokyo, Japan), and an experimental one, SI-R20209 (SIR; Shofu Inc., Kyoto, Japan). Disk-shaped specimens were prepared, their colors were determined at baseline, and after immersion in water (control), tea and coffee solutions for 24, 48, and 72 hours. Very little discoloration was found with the water-stored specimens. Staining response was most pronounced after coffee immersion for White Coat and after tea immersion for the experimental material, exceeding the clinically acceptable discoloration threshold value of δE=3.3. However, most of the resin shades tested are likely to be sufficiently safe against heavy discoloration when used for short-term restoration only.

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KW - In vitro color stability

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