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- Title
DENTAL BLEACHING WITH OZONE: EFFECTS ON COLOR AND ENAMEL MICROHARDNESS.
- Authors
Santana, Manuella S. C. A.; Bridi, Enrico C.; Navarro, Ricardo S.; de Lima, Carlos J.; Fernandes, Adriana B.; Amaral, Flávia L. B. do; França, Fabiana M. G.; Turssi, Cecilia P.; Basting, Roberta T.
- Abstract
The aim of this in vitro study was to evaluate the effects of dental bleaching with ozone (O3) on color change and enamel microhardness. Enamel blocks (3 x 3 x 3mm) were randomly distributed for treatments (n= 10). Color change (ΔE) and Knoop microhardness of the enamel blocks were evaluated before and after the following treatments: C -- deionized water (control); HP - 37.5% hydrogen peroxide (Pola Office+/SDI); PLA -placebo gel; O3 - ozone; and O2 -- oxygen. Four 8-minute applications were used for HP and PLA, and one 19-minute application for O3 and O2.One-way ANOVA revealed that ΔE was not significantly influenced by the treatment (p = 0.112). For the treatments with HP, PLA, O3 and O2, ΔE was greater than 3.3. The paired t test showed significant decrease in microhardness after treatments (p < 0.001) but no significant difference between treatments (ANOVA;p = 0.313). Dental bleaching treatments with O3, HP, O2 and PLA induced enamel color changes that may be clinically discernible, although enamel microhardeness decreased.
- Subjects
TOOTH whitening; HYDROGEN peroxide; ANALYSIS of variance; DENTAL enamel; OZONE
- Publication
Acta Odontologica Latinoamericana: AOL, 2016, Vol 29, Issue 1, p68
- ISSN
0326-4815
- Publication type
Article