Is the use of a potassium nitrate dentifrice effective in reducing tooth sensitivity related to in-office bleaching?: A randomized triple-blind clinical trial

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dc.coverageDOI: 10.1111/jerd.12826
dc.creatorOrtega-Moncayo, María Gracia
dc.creatorAliaga-Sancho, Paulina
dc.creatorPulido, Camilo
dc.creatorGutierrez, Mario Felipe
dc.creatorRodriguez-Salazar, Estuardo
dc.creatorBurey, Adrieli
dc.creatorLeón, Katherine
dc.creatorRomán-Oñate, Yolanda
dc.creatorGalvao Arrais, Cesar Augusto
dc.creatorLoguercio, Alessandro D.
dc.creatorDávila-Sánchez, Andrés
dc.date2021
dc.date.accessioned2025-11-18T19:48:14Z
dc.date.available2025-11-18T19:48:14Z
dc.description<p>Objective: The aims of this study were to evaluate whether the use of a dentifrice containing 5% potassium nitrate (KNO<sub>3</sub>) prior to and during in-office dental bleaching reduces bleaching-induced tooth sensitivity and affects bleaching efficiency. Materials and methods: Thirty-eight individuals were randomly distributed into two groups (n = 19). The experimental group performed toothbrushing using a dentifrice containing 5% KNO<sub>3</sub>, one week before treatment and before the first and second bleaching sessions. In the control group, a placebo dentifrice without KNO<sub>3</sub> was applied as described for the first group. Tooth sensitivity was recorded on visual analog scales (VAS) and numeric rating scales (NRS) immediately and up to 48 h after bleaching sessions. Color change at different time intervals, was evaluated with shade guide units (∆SGU) and a digital spectrophotometer (∆E CIELab 1976 and CIEDE2000) at baseline and 7, 15, and 30 days post-bleaching. Mann–Whitney test and t-test were used to evaluate TS intensity for NRS and VAS scales, respectively, and T-test was used for color difference evaluation. Results: No significant difference in tooth sensitivity's absolute risk and intensity were observed between tested groups in any evaluated treatment time for NRS (p = 0.91) or VAS scales (p = 0.48). T-test showed no significant difference in both ∆E and ∆SGU tooth color among the experimental and control groups during the different evaluation times (p = 0.27). Conclusion: The use of a dentifrice containing 5% KNO<sub>3</sub> does not prevent post-operatory tooth sensitivity but allows the same whitening efficiency as a regular dentifrice. Clinical significance: The use of a dentifrice-containing KNO<sub>3</sub> did not prevent bleaching-induced tooth sensitivity when high-concentrated hydrogen peroxide was used for in-office bleaching.</p>eng
dc.descriptionObjective: The aims of this study were to evaluate whether the use of a dentifrice containing 5% potassium nitrate (KNO3) prior to and during in-office dental bleaching reduces bleaching-induced tooth sensitivity and affects bleaching efficiency. Materials and methods: Thirty-eight individuals were randomly distributed into two groups (n = 19). The experimental group performed toothbrushing using a dentifrice containing 5% KNO3, one week before treatment and before the first and second bleaching sessions. In the control group, a placebo dentifrice without KNO3 was applied as described for the first group. Tooth sensitivity was recorded on visual analog scales (VAS) and numeric rating scales (NRS) immediately and up to 48 h after bleaching sessions. Color change at different time intervals, was evaluated with shade guide units (∆SGU) and a digital spectrophotometer (∆E CIELab 1976 and CIEDE2000) at baseline and 7, 15, and 30 days post-bleaching. Mann–Whitney test and t-test were used to evaluate TS intensity for NRS and VAS scales, respectively, and T-test was used for color difference evaluation. Results: No significant difference in tooth sensitivity's absolute risk and intensity were observed between tested groups in any evaluated treatment time for NRS (p = 0.91) or VAS scales (p = 0.48). T-test showed no significant difference in both ∆E and ∆SGU tooth color among the experimental and control groups during the different evaluation times (p = 0.27). Conclusion: The use of a dentifrice containing 5% KNO3 does not prevent post-operatory tooth sensitivity but allows the same whitening efficiency as a regular dentifrice. Clinical significance: The use of a dentifrice-containing KNO3 did not prevent bleaching-induced tooth sensitivity when high-concentrated hydrogen peroxide was used for in-office bleaching. © 2021 Wiley Periodicals LLC.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/32d0cbf6-a956-4e95-b523-f998d03fb91b
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/55452
dc.languageeng
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourcevol.34 (2021) nr.6 p.951-958
dc.subjecthydrogen peroxide
dc.subjectpotassium nitrate
dc.subjectsensitivity
dc.subjectspectrophotometer
dc.titleIs the use of a potassium nitrate dentifrice effective in reducing tooth sensitivity related to in-office bleaching?: A randomized triple-blind clinical trialeng
dc.typeArticleeng
dc.typeArtículospa
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