A Single-Blind Randomized Trial About the Effect of Hydrogen Peroxide Concentration on Light-Activated Bleaching

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dc.contributor.authorMena-Serrano, A. P.
dc.contributor.authorGarcia, E.
dc.contributor.authorLuque Martínez, Íssis Virginia
dc.contributor.authorGrande, R. H. M.
dc.contributor.authorLoguercio, A. D.
dc.contributor.authorReis, A.
dc.date.accessioned2019-10-16T20:16:09Z
dc.date.available2019-10-16T20:16:09Z
dc.date.issued2016
dc.description.abstractObjective: To compare the bleaching efficacy and tooth sensitivity (TS) of two hydrogen peroxide ( HP) concentrations (20% and 35%) used for in-office bleaching associated or not with a light-emitting diode (LED)/laser light activation. Method: Seventy-seven patients with a right maxillary canine darker than A3 were selected for this single-blind randomized trial. The participants were distributed in four groups: bleaching with 35% HP, 35% HP + LED/laser, 20% HP, and 20% HP + LED/laser. The anterior teeth were bleached in two sessions, using a 35% or 20% HP gel with a one-week interval. Each session had three applications of 15 minutes. For the light-activated groups, the LED/laser energy (Whitening Laser Light Plus, DMC) was employed according to the manufacturer's instructions. The color change was evaluated by subjective and objective methods. Participants recorded TS with five-point verbal and visual analog scales. Color change in DE was evaluated by analysis of variance and Tukey tests (alpha = 0.05) and in Delta SGU with Kruskall-Wallis and Dunn test. The absolute risk of TS and TS intensity were evaluated by Fisher exact test and Krus-kall-Wallis test, respectively (alpha = 0.05). Results: All groups achieved the same level of whitening, except for the 20% HP group, which showed the lowest degree of whitening in the subjective analysis. The use of light did not increase the absolute risk or intensity of TS. No significant difference among groups was observed when color changes were assessed with the spectrophotometer. Conclusion: According to the value-oriented shade guide, the use of LED/laser light activation was able to increase the degree of whitening of the 20% HP group, but this association was not useful for the 35% HP gel. The spectrophotometer, however, did not detect significant differences among groups.
dc.format.extent10
dc.fuente.origenFacultad Medicina. Odontología
dc.identifier.doi10.2341/15-077-C
dc.identifier.issn0361-7734
dc.identifier.urihttps://doi.org/10.2341/15-077-C
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/26561
dc.issue.numeroNo. 5
dc.pagina.final464
dc.pagina.inicio455
dc.revistaOperative Dentistryes_ES
dc.rightsacceso abierto
dc.subjectshade-matching abilityes_ES
dc.subjectin-officees_ES
dc.subjecttooth sensitivityes_ES
dc.subjectclinical-triales_ES
dc.subjectcarbamide peroxidees_ES
dc.subjectat-homees_ES
dc.subjectoxidative stresses_ES
dc.subjectwhitening stripses_ES
dc.subjectpulpes_ES
dc.subjectchamberes_ES
dc.subjectfollow-upes_ES
dc.subjectDentistry, Oral Surgery & Medicinees_ES
dc.subject.ddc610
dc.subject.deweyMedicina y saludes_ES
dc.titleA Single-Blind Randomized Trial About the Effect of Hydrogen Peroxide Concentration on Light-Activated Bleachinges_ES
dc.typeartículo
dc.volumenVol. 41
sipa.codpersvinculados1020227
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