Effect of 10 percent carbamide peroxide on color of provisional restoration materials
Article Abstract:
It is often desirable to bleach living teeth before placing a permanent crown, but some temporary materials in the mouth will discolor. Various methacrylates, bisacryl composite resin pieces, and polycarbonate crowns were exposed to each of four solutions: three different 10% solutions of carbamide peroxide and distilled water. Neither the bisacryl composite pieces nor the polycarbonate crowns were affected. Methyl methacrylate is the most stable in color of provisional materials in normal use, but in this test, all the methacrylates turned orange. This would be more noticeable as the adjacent teeth lightened.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1997
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Assessing tooth color change after repeated bleaching in vitro with a 10 percent carbamide peroxide gel
Article Abstract:
Dental bleaching agents may bleach the incisal area more than the rest of the tooth. Researchers compared the effectiveness of bleaching with a 10% carbamide peroxide gel on 25 extracted human incisors. The degree of bleaching varied according to bleaching time, section of the tooth, and the initial color. The incisal, or cutting edge, area of the teeth bleached out more than did the middle or cervical areas of the teeth. The incisal area may bleach out more because it has less dentin or a different amount of hard tissue than other tooth areas.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1996
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Assessing the effects of 10 percent carbamide peroxide on oral soft tissues
Article Abstract:
Bleaching gels do not appear to have any adverse effects on the soft tissues of the mouth. Of 52 people in a study of bleaching agents, half used a 10% carbamide peroxide gel in the tray and half used a placebo gel. They wore the tray during sleep every night for 2 weeks. Six weeks after they began the treatment, there were no significant differences between the groups in the appearance of their oral mucosa. The study was prompted by concerns about the effect of bleaching gels on oral mucosa.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1996
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