The change of teeth color, whiteness variations and its psychosocial and self-perception effects when using low vs. high concentration bleaching gels: A one-year follow-up

J. Estay, P. Angel, C. Bersezio, M. Tonetto, G. Jorquera, M. Peña, E. Fernández

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Background: Dental bleaching in traditional concentrations generates greater sensitivity. In this respect, new systems of lower concentration of hydrogen peroxide for tooth bleaching appeared, with color stability unknown over time. The aim of this study was to compare the change and stability of color with low-concentration (6%) hydrogen peroxide gel in an in-office bleaching setting relative to conventional 37.5% gel, including their effects on psychosocial and esthetic self-perception, after 1 year. Methods: Patients (n = 25) were assessed at 12 months post bleaching treatment (whitening with 6% chemo-activated alkaline formula gel versus 37.5% traditional concentration gel). Color changes were measured objectively using total variation in color (ΔE), and subjectively using Vita Classical and Vita Bleached scale (ΔSGU) by calibrated evaluators (Kappa = 0.85). The Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) and Oral Health Impact Profile (OHIP-14) aesthetic questionnaires were used to measure the self-perception and the psychosocial impact of the bleaching protocols. Results: The effect (ΔE) of 37.5% HP (8.37 ± 2.73) was significantly better than that of 6% HP (5.27 ± 2.53) in terms of color rebound after 1 year of follow-up. There were significant differences in psychosocial impact and esthetic self-perception measurements prior to bleaching versus one-year post-whitening time points; positive effects were maintained. Conclusions: Low concentration (6%) achieved effective bleaching with good stability after 1 year, accompanied by a positive psychosocial impact and enhanced self-perception at follow-up. Trial registration: NCT03217994 (before enrollment of the first participant). Data register: July 14, 2017.

Original languageEnglish
Article number255
JournalBMC Oral Health
Volume20
Issue number1
DOIs
StatePublished - 11 Sep 2020

Bibliographical note

Funding Information:
The work was supported by Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT 1170575). The funding body played no role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript. Grant’s owner; EF, CB.

Publisher Copyright:
© 2020 The Author(s).

Keywords

  • Bleaching
  • Low concentration
  • OHIP-14
  • PIDAQ
  • Randomized clinical trial

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