Tooth bleaching with hydrogen peroxide and nano‐hydroxyapatite: a 9‐month follow‐up randomized clinical trial. Issue 4 (20th January 2015)

• Record Type: Journal Article
• Authors: Vano, M; Derchi, G; Barone, A; Genovesi, A; Covani, U
• Is Part Of: International journal of dental hygiene. Volume 13:Issue 4(2015:Nov.)
• Page Start: 301
• Page End: 307
• Publication Date: 2015-01-20
• Subjects: Dental hygiene -- Periodicals; Dental hygienists -- Periodicals; 617.60105
• DOI: 10.1111/idh.12123
• Languages: English
• ISSNs: 1601-5029

Abstract

<abstract abstract-type="main" id="idh12123-abs-0001"> <title>Abstract</title> <sec id="idh12123-sec-0001" sec-type="section"> <title>Objectives</title> <p>The aim of this study was to compare the amount of tooth colour change, rebound rate and tooth sensitivity in patients submitted to a bleaching technique with 6% hydrogen peroxide (HP) with or without 2% nano‐hydroxyapatite (n‐HA).</p> </sec> <sec id="idh12123-sec-0002" sec-type="section"> <title>Methods</title> <p>Sixty subjects were included in this examiner‐blinded, randomized clinical trial using a 6% HP gel with or without 2% n‐HA. Tooth colour and tooth sensitivity were analysed before and after treatment. All data were analysed statistically.</p> </sec> <sec id="idh12123-sec-0003" sec-type="section"> <title>Results</title> <p>After bleaching, both treatments demonstrated significant improvements in tooth shade (<italic>P</italic> < 0.05 for both groups). At the 9‐month recall, tooth shade remained significantly lighter than at baseline (<italic>P</italic> < 0.05 for both groups). However, a relapse of the tooth shade was observed compared with the immediate post‐bleaching result (<italic>P</italic> < 0.05). 6% HP with 2% n‐HA produced significantly lower sensitivity (<italic>P</italic> < 0.05) than the bleaching product without n‐HA. Colour change evaluation resulted in no difference between the two groups.</p> </sec> <sec id="idh12123-sec-0004" sec-type="section"> <title>Conclusion</title> <p>Both treatments demonstrated significant improvements in tooth shade. The bleaching effectiveness of the tested products was comparable. The use of 6% HP with 2% n‐HA reduced the incidence of sensitivity during the bleaching treatment compared to a bleaching agent that did not contain n‐HA.</p> </sec> </abstract>