Resumo

REZENDE, Márcia; SIQUEIRA, Sinésio Henrique  e  KOSSATZ, Stella. Dental bleaching - technique effect on dental sensitivity and effectiveness. Rev. Assoc. Paul. Cir. Dent. [online]. 2014, vol.68, n.3, pp. 208-212. ISSN 0004-5276.

The associated dental bleaching appears to be more stable over time. The objective was to evaluate the effectiveness of bleaching (EB), tooth sensitivity (TS) and recurrence color (RC) in bleaching of vital teeth. Thirty patients were divided into 2 groups (n=15): bleaching associated (BA) and in-office bleaching (OB). Two sessions of OB with 35 % PH (Mix One Supreme, Villevie) were performed. The home bleaching was carried out in BA with PH 6 % (Mix Day, Villevie) for 4 weeks. The color was recorded with the Vita Classical scale before and after 2 sessions of OB during home bleaching and post - bleaching (1 week , 1 month, and 6 months) . Patients recorded the SD on a scale of 0-4. We used ANOVA and Tukey tests to assess EB, intensity of SD and RC. The SD was analyzed by Fisher (p>0.05). The EB was similar to the techniques evaluated (p>0.05). The OB group showed significant RC after 1 week (p=0.008) and 1 month (p=0.003), which did not occur in relation to the BA group, for these periods (p>0.05). No differences in color stability between groups at 6 months post-bleaching (p>0.05). In BA 73 % and OB 80 % of patients had SD (p>0.05), with the majority being mild (p>0.05). The evaluated techniques were effective, but the CA showed greater color stability after 1 week and 1 month, but did not differ from OB 6 months after bleaching. There was no difference in SD and intensity of SD.

Palavras-chave : hydrogen peroxide; dentin sensitivity; tooth bleaching.