Quantitative evaluation of colour regression and mineral content change of bleached teeth

Journal of Dentistry
Q LiYining Wang

Abstract

To evaluate the colour regression of bleached teeth in four experimental environments, and to explore the relationship between colour change and bulk miners loss. Forty freshly extracted sound human incisors were in vitro treated using an in-office bleaching gel containing 38% hydroxide carbamide. The bleached teeth were subsequently divided into four groups and stored in four different environments: purified water, artificial saliva, a commercial remineralisation gel, and a desiccator. A spectrophotometer and a mu-CT were used to investigate the colour parameters (L*, a*, and b*) and the mineral content of the teeth pre- and post-bleaching. ANOVA and Tukey's post hoc analysis were performed to investigate the effect of time on the colour coordinates. Paired t-tests were used to compare the mineral content changes. Linear regression test was performed to explore the relationship of the colour coordinates and mineral content change in the colour regression process. Colour regression occurred in the mineral containing environment accompanying with the mineral content remarkable increase in the outer layers of teeth tissue (P<0.05). No colour regression and mineral content change were found in the anhydrous environment (P>0.05). T...Continue Reading

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Citations

Jan 27, 2012·Clinical Oral Investigations·Younju KimJuhea Chang
Jul 13, 2013·British Dental Journal·Y Li, L Greenwall
Aug 29, 2012·Journal of Dentistry·Hazem EimarFaleh Tamimi
May 15, 2015·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·So Ran Kwon, Philip W Wertz
Feb 3, 2015·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Aline Akemi MoriRenata Correa Pascotto
Aug 22, 2015·TheScientificWorldJournal·Muhammet Karadas, Omer Hatipoglu
Dec 10, 2015·Brazilian Dental Journal·Taciana Marco Ferraz CaneppeleEduardo Bresciani
Nov 28, 2018·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Sean S LeeYiming Li
Feb 23, 2019·British Dental Journal·Joseph Greenwall-CohenJean-Pierre Attal
Aug 10, 2019·Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research·Débora Drummond Hauss MonteiroCláudia Silami Magalhães
Jul 10, 2017·Clinical Oral Investigations·Mauricio Neves GomesCarlos Eduardo Francci
Jun 14, 2019·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Cristian BersezioAlessandro Loguercio
Apr 27, 2015·Acta Biomaterialia Odontologica Scandinavica·Muhammet Karadas
Sep 3, 2021·BioMed Research International·Bo ZhangMingyun Li

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