Longevity and Effectiveness of Bleaching in Healthy and Smokers Patients

Summary

The main objective of this study is to evaluate the effectiveness and longevity of color and Tooth sensitivity of patients undergoing home whitening peroxide 10% carbamide ( Whiteness Perfect , FGM , Joinville , Santa Catarina , Brazil) , and the relationship with the cigarette use for tooth whitening. They will be selected 120 patients with incisors darker than A2, higher plants will be divided into 2 groups per center (n = 30 ) , GE - Group Experimental ( smoking) and GC - Group Control ( non-smoking) . For the two groups will be used Carbamide peroxide 10% for 3 hours daily for a period of 3 weeks. Color will evaluated through the Vita Classical scale and Vita Easyshade Spectrophotometer in the periods: Home , for tooth whitening (1st , 2nd and 3rd week) and post- whitening ( 1 week and 1 month , 2 and 3 months). Patients recorded the perceived sensitivity through Numerical Analogue Scale (NRS ) with values from 0 to 4, where 0 = no sensation, 1 = mild, 2 = moderate, 3 = severe and 4 = significant , also in the Visual Analogue Scale (VAS ), with values from 0 to 10 where 0 = 10 = severe tenderness and sensitivity. for color analysis will be made two-way ANOVA (group vs. treatment time ), being Over time the repeated measure ( α = 0.05). Test will be held on Tukey to contrast the average ( α = 0.05). The sensitivity will be evaluated by the Fisher exact test . It is expected that there is no difference on the effectiveness of home whitening and tooth sensitivity between smokers and nonsmokers.

Timeline

Start

2013-12

Primary completion

2014-01

Completion

2014-01

Publications

• Background de Geus JL, Bersezio C, Urrutia J, Yamada T, Fernandez E, Loguercio AD, Reis A, Kossatz S. Effectiveness of and tooth sensitivity with at-home bleaching in smokers: a multicenter clinical trial. J Am Dent Assoc. 2015 Apr;146(4):233-40. doi: 10.1016/j.adaj.2014.12.014.
• de Geus JL, de Lara MB, Hanzen TA, Fernandez E, Loguercio AD, Kossatz S, Reis A. One-year follow-up of at-home bleaching in smokers before and after dental prophylaxis. J Dent. 2015 Nov;43(11):1346-51. doi: 10.1016/j.jdent.2015.08.009. Epub 2015 Aug 21.

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Indications