The effect of pigment solutions on enhancing tooth bleaching efficacy: A laboratory study.
Makaleler > Tam Makale · 2025
Yazarlar: Tutku Baytok Kavci, Hatice T Yeyen, Hande KEMALOĞLU, Ayşe A Aykor, Lezize Şebnem TÜRKÜN
American journal of dentistry, Uluslararası, 2025, cilt 38, ss 283-287
Özet
PURPOSE: To evaluate the effect of various pigments with white or blue coloring properties, which could be applied to bleached enamel surfaces, on the tooth color. METHODS: Bovine teeth, which exhibit structural characteristics closely resembling human teeth, were used. The samples were subjected to an in-office bleaching procedure using a gel containing 35% hydrogen peroxide. Color measurements were performed using a digital spectrophotometer both before and after bleaching. Subsequently, the following pigments commonly used in cosmetic and medical products were applied to the bleached enamel surfaces: blue covarine, white food dye, titanium dioxide, indigo extract, and nano-hydroxyapatite (n-HAP). Granulated coffee was used as the positive control group, and distilled water served as the negative control. Color changes were analyzed using a spectrophotometer. RESULTS: The groups in which blue covarine and titanium dioxide were applied exhibited significantly lighter color values after bleaching compared to the other groups (P< 0.05). While a slight increase in whiteness was observed in the na-HAP group following bleaching, a marked darkening in color occurred in the coffee group. CLINICAL SIGNIFICANCE: Light-colored pigments, like blue covarine and titanium dioxide, support color stability after tooth bleaching and may enhance the effectiveness of the bleaching treatment by ensuring longer-lasting esthetic results.