fa Tooth sensitivity and efficacy of in-office bleaching in restored teeth ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <p> <strong>Objectives</strong></p><p>  The aim of this clinical trial was to evaluate efficacy (BE) and tooth sensitivity (TS) of in-office bleaching with a 35% hydrogen peroxide (HP) in patients with aesthetic restorations. </p><p> <strong>Methods</strong> </p><p> Hydrogen peroxide 35% was applied in two sessions, of three 15min applications, in 15 patients with upper anterior sound teeth (S) and 15 with aesthetic restorations (R). The colour was recorded at baseline, one week and 6 months after treatment completion. Patients recorded TS on a 0–4 scale. The BE was evaluated by two-way ANOVA and Tukey's tests (α=0.05). The percentage of patients with TS was evaluated by Fisher's exact test and TS intensity of treatments was compared with Mann–Whitney U-test (α=0.05).</p><p> <strong> Results</strong></p><p>  All participants experienced TS at least once during treatment. Higher TS intensity was observed in R (1.5 [1/1.75]) compared to S (0.5 [0/1.25]) during the bleaching (p<0.05). S and R demonstrated similar tooth colour enhancement compared to baseline (p<0.05) and both presented colour stability after 6 months of evaluation (p>0.05). </p><p> <strong>Conclusions</strong></p><p>  The in-office bleaching with 35% HP was effective in patients with aesthetic restorations, however, a higher intensity of TS was observed during the bleaching protocol. </p><p> <strong>Clinical relevance</strong></p><p>  In-office dental bleaching can be performed in patients with adhesive restorations promoting satisfactory results however, it can promote higher intensity of sensitivity compared to patients with sound teeth. </p><p>  </p><hr><p></p><p> <strong>Source: </strong>Journal of Dentistry</p><p> <a href="http://www.jodjournal.com/article/S0300-5712(13)00025-0/abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> Tooth bleaching, Hydrogen peroxide, Tooth sensitivity, Dental aesthetic 0 0 http://idai.ir/browse.php?a_code=A-10-32-2140&slc_lang=fa&sid=1 Elize Bonafé 100319475328460010039 100319475328460010039 No Camila Lais Bacovis 100319475328460010040 100319475328460010040 No Simon Lensen 100319475328460010041 100319475328460010041 No Alessandro D. Loguercio 100319475328460010042 100319475328460010042 No Alessandra Reis 100319475328460010043 100319475328460010043 No Stella Kossatz 100319475328460010044 100319475328460010044 Yes School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil