Effect of coffe and a cola-based soft drink on the color stability of bleached bovine incisors considering the time elapsed after bleaching
AUTOR(ES)
PIROLO, Rodrigo, MONDELLI, Rafael Francisco Lia, CORRER, Gisele Maria, GONZAGA, Carla Castiglia, FURUSE, Adilson Yoshio
FONTE
J. Appl. Oral Sci.
DATA DE PUBLICAÇÃO
29/07/2014
RESUMO
There is no consensus about the waiting time necessary for the patient to start consuming beverages containing colorants again after bleaching. Objective: To evaluate the influence of beverages with coloring agents on bleached bovine incisors considering the time elapsed after bleaching. Materials and methods: Sixty bovine incisors were bleached with 35% hydrogen peroxide for in-office use (Whiteness HP Max) and divided into 10 groups. The color was evaluated with a spectrophotometer (Spectro Shade MICRO) before and after bleaching, employing the CIE-Lab system. After bleaching, the teeth were exposed for 5 min to coffee or cola-based soft drink (CBSD) at different periods after bleaching: 10 min, 1 h, 24 h, 48 h, and 72 h. Color (∆E) and lightness (∆L) variations were obtained from the CIE-Lab coordinates. Data were subjected to two-way ANOVA and Tukey HSD tests (p<0.05). Results: Significant differences were observed between groups for both the ∆L and ∆E values (p<0.001). All specimens presented a decrease in brightness (negative ∆L). The highest ∆E values were observed for teeth stained with a CBSD at 10 min and 1 h (4.12 and 4.16, respectively). Teeth pigmented with coffee presented ∆E values below 3.3 units for all evaluation times. Conclusion: The exposure to coffee after bleaching causes less color changes than the exposure to a CBSD regardless of the time after bleaching.
Documentos Relacionados
- Erosive cola-based drinks affect the bonding to enamel surface: an in vitro study
- Effect of different solutions on color stability of acrylic resin-based dentures
- Effect of different disinfecting procedures on the hardness and color stability of two maxillofacial elastomers over time
- Iron supplementation reduces the erosive potential of a cola drink on enamel and dentin in situ
- Effect of dental bleaching on pulp oxygen saturation in maxillary central incisors - a randomized clinical trial