Portal de Periódicos da CAPES

Sensitivity and Tooth Whitening Agents

2002; Wiley; Volume: 14; Issue: 2 Linguagem: Inglês

10.1111/j.1708-8240.2002.tb00156.x

1708-8240

Randall M Pohjola, William D. Browning, Steven T. Hackman, Michael L. Myers, MARY C. DOWNEY,

Skin Protection and Aging

ABSTRACT Purpose : Three commercially available dentist‐prescribed home‐applied bleaching systems were evaluated to identify the incidence of sensitivity and to compare the efficacy of whitening the maxillary anterior teeth of 18 patients. Methods : Nite White Excel 2Z (Discus Dental), fx (Challenge Products), and Rembrandt Xtra‐Comfort (DenMat Corp.) were randomly assigned to six patients each. The fx product was used as a control since it was not advertised as a zero sensitivity product. The manufacturers' instructions for tray fabrication and use were followed while the patients bleached for 2 weeks. The patients kept a diary and were recalled at 1 week, 2 weeks, and 4 weeks. The shade change and the presence or absence of any sensitivity were evaluated at each recall. Results : Nite White Excel 2Z was used for 83 days of treatment with the following percentage of positive sensitivity reported: 0% hot and cold, 2.4% throat sensitivity, 2.4% tongue sensitivity, and 25.3% gingival sensitivity. Rembrandt Xtra‐Comfort was used for 84 days with 0% hot and cold, 0% throat, 11.9% tongue, and 27.4% gingival sensitivity reported. The fx product was used for 83 days and resulted in 14.5% hot and cold, 3.6% throat, 1.2% tongue, and 16.9% gingival sensitivity. All products lightened the teeth an average of eight shade tabs on the Vita guide. There was a statistically significant difference between the groups when comparing the presence of sensitivity (chi‐squared test, p < .001) but not when comparing the shade tab change.