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Bleaching efficacy and tooth sensitivity using violet LED – single-blind randomized controlled trial.

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Title: Bleaching efficacy and tooth sensitivity using violet LED – single-blind randomized controlled trial.
Authors: Zanin, Gabriela Torres1,2 (AUTHOR) gabrielatorreszanin@gmail.com, Ribeiro, Edgar Pedreiro1,2 (AUTHOR) edgarribeiro22@gmail.com, Maran, Bianca Medeiros3,4 (AUTHOR) medeiros.bianca@hotmail.com, Lopes, Murilo Baena1,2 (AUTHOR) baenalopes@gmail.com, Guiraldo, Ricardo Danil1,2 (AUTHOR) rdguiraldo@gmail.com, Reis, Alessandra5 (AUTHOR) reis_ale@hotmail.com, Loguercio, Alessandro D.5 (AUTHOR) aloguercio@hotmail.com, Berger, Sandrine Bittencourt1,2 (AUTHOR) berger.sandrine@gmail.com
Source: Lasers in Medical Science. 5/19/2025, Vol. 40 Issue 1, p1-9. 9p.
Subjects: Tooth sensitivity, Tooth whitening, Randomized controlled trials, Fisher exact test, Hydrogen peroxide
Abstract: This study aims to conduct a single-blind randomized controlled trial to evaluate the bleaching efficacy and tooth sensitivity (TS) following the use of violet LED associated or not with 35% hydrogen peroxide. Eighty-four participants were randomly allocated into three groups according to bleaching treatments (n = 28): 35% hydrogen peroxide (HP) only, Violet LED only (VLED), and an association of 35% HP with violet LED (HP + VLED). Three sessions were performed, with an interval of seven days between each one. Changes in the objective (ΔEab and ΔE00) and subjective (ΔSGU) color and the Whiteness Index for Dentistry (ΔWID) were calculated based on before, and seven and thirty days after treatment using colorimetric measurements. Participants self-reported the risk and intensity of TS on a visual analogue scale (VAS). The color assessments seven and 30 days after bleaching were analyzed by two-way ANOVA and Tukey's test. The absolute TS risk was analyzed by Fisher's exact test. The significance level adopted was α = 0.05. HP and HP + VLED treatments showed higher and significant bleaching values (ΔEab, ΔE00, ΔSGU, and ΔWID) compared to VLED. The HP + VLED and HP groups presented a higher risk and intensity of TS compared to the VLED group (p < 0.05). The bleaching efficacy of VLED alone was lower compared to the HP and HP + VLED protocols both seven and 30 days after the end of treatments. [ABSTRACT FROM AUTHOR]
Copyright of Lasers in Medical Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Bleaching efficacy and tooth sensitivity using violet LED – single-blind randomized controlled trial.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zanin%2C+Gabriela+Torres%22&quot;&gt;Zanin, Gabriela Torres&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; gabrielatorreszanin@gmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Ribeiro%2C+Edgar+Pedreiro%22&quot;&gt;Ribeiro, Edgar Pedreiro&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; edgarribeiro22@gmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Maran%2C+Bianca+Medeiros%22&quot;&gt;Maran, Bianca Medeiros&lt;/searchLink&gt;&lt;relatesTo&gt;3,4&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; medeiros.bianca@hotmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Lopes%2C+Murilo+Baena%22&quot;&gt;Lopes, Murilo Baena&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; baenalopes@gmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Guiraldo%2C+Ricardo+Danil%22&quot;&gt;Guiraldo, Ricardo Danil&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; rdguiraldo@gmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Reis%2C+Alessandra%22&quot;&gt;Reis, Alessandra&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; reis_ale@hotmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Loguercio%2C+Alessandro+D%2E%22&quot;&gt;Loguercio, Alessandro D.&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; aloguercio@hotmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Berger%2C+Sandrine+Bittencourt%22&quot;&gt;Berger, Sandrine Bittencourt&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; berger.sandrine@gmail.com&lt;/i&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Lasers+in+Medical+Science%22&quot;&gt;Lasers in Medical Science&lt;/searchLink&gt;. 5/19/2025, Vol. 40 Issue 1, p1-9. 9p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Tooth+sensitivity%22&quot;&gt;Tooth sensitivity&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Tooth+whitening%22&quot;&gt;Tooth whitening&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Randomized+controlled+trials%22&quot;&gt;Randomized controlled trials&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Fisher+exact+test%22&quot;&gt;Fisher exact test&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Hydrogen+peroxide%22&quot;&gt;Hydrogen peroxide&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study aims to conduct a single-blind randomized controlled trial to evaluate the bleaching efficacy and tooth sensitivity (TS) following the use of violet LED associated or not with 35% hydrogen peroxide. Eighty-four participants were randomly allocated into three groups according to bleaching treatments (n = 28): 35% hydrogen peroxide (HP) only, Violet LED only (VLED), and an association of 35% HP with violet LED (HP + VLED). Three sessions were performed, with an interval of seven days between each one. Changes in the objective (ΔEab and ΔE00) and subjective (ΔSGU) color and the Whiteness Index for Dentistry (ΔWID) were calculated based on before, and seven and thirty days after treatment using colorimetric measurements. Participants self-reported the risk and intensity of TS on a visual analogue scale (VAS). The color assessments seven and 30 days after bleaching were analyzed by two-way ANOVA and Tukey&#39;s test. The absolute TS risk was analyzed by Fisher&#39;s exact test. The significance level adopted was α = 0.05. HP and HP + VLED treatments showed higher and significant bleaching values (ΔEab, ΔE00, ΔSGU, and ΔWID) compared to VLED. The HP + VLED and HP groups presented a higher risk and intensity of TS compared to the VLED group (p &lt; 0.05). The bleaching efficacy of VLED alone was lower compared to the HP and HP + VLED protocols both seven and 30 days after the end of treatments. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Lasers in Medical Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10103-025-04486-9
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              Text: 5/19/2025
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