Color luminosity regression after home tooth whitening in smoking and nonsmoking patients

Authors

  • Cristobal Fuentes Universidad de Chile. Facultad de Odontología. Departamento de Odontología Restauradora. Santiago de Chile. https://orcid.org/0000-0001-7431-983X
  • Alain Manuel Chaple-Gil Universidad de Ciencias Médicas de La Habana. Facultad de Ciencias Médicas "Victoria de Girón". Departamento de Estomatología General Integral. La Habana. Centro Internacional de Salud "La Pradera" https://orcid.org/0000-0002-8571-4429
  • Cristian Bersezio Universidad de Chile. Facultad de Odontología. Departamento de Odontología Restauradora. Santiago de Chile https://orcid.org/0000-0003-1465-8308
  • Eduardo Fernández Universidad de Chile. Facultad de Odontología, Departamento de Odontología Restauradora. Santiago de Chile. Universidad Autónoma de Chile. Instituto de Ciencias Biomédicas. Santiago de Chile. https://orcid.org/0000-0002-2616-1510

Keywords:

tooth bleaching, smokers, color

Abstract

Introduction: Many studies have been conducted about the effectiveness of tooth whitening, but few refer to color regression (a phenomenon occurring after tooth whitening) or to smoking patients. 

Objective: Determine color luminosity regression in smoking and nonsmoking patients undergoing home tooth whitening with 10 % carbamide peroxide. 

Methods: A descriptive cross-sectional study was conducted of 43 patients from a group of 60 previously undergoing home treatment with 10 % carbamide peroxide for 3 weeks. The patients were divided into an experimental group (EG, smoking patients) and a control group (CG, nonsmoking patients). A Vita Easyshade® spectrophotometer was used to measure color variation one week, one month, 6 months and 9 months after whitening. The data obtained by spectrophotometry were analyzed with the Shapiro-Wilk and the Kolmogorov-Smirnov tests to evaluate the normality of the distribution, and then they were subjected to the Mann-WhitneyWilcoxon U test (α = 0,05). 

Results: Delta L* was 2,3 (EG) and 3,66 (CG); delta values were estimated from data obtained 9 months vs. one week after whitening. No statistically significant differences were found between the groups. 

Conclusions: No statistically significant color regression differences are found in either smoking or nonsmoking patients after home whitening with 10 % carbamide peroxide.

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References

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Published

2020-07-30

How to Cite

1.
Fuentes C, Chaple-Gil AM, Bersezio C, Fernández E. Color luminosity regression after home tooth whitening in smoking and nonsmoking patients. Rev Cubana Inv Bioméd [Internet]. 2020 Jul. 30 [cited 2025 Jul. 13];39(3). Available from: https://revibiomedica.sld.cu/index.php/ibi/article/view/e559

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Section

ARTÍCULOS ORIGINALES