Effect of violet led associated with low-concentration hydrogen peroxide on enamel surface roughness
Braz. j. oral sci
;
19: e209197, jan.-dez. 2020. ilus
Article
in English
| BBO, LILACS
| ID: biblio-1152172
ABSTRACT
Aim:
The present study aimed to assess in vitro the effect ofviolet LED in tooth bleaching techniques associated or not withlow-concentration hydrogen peroxide gel on enamel surfaceroughness.Methods:
Fifty-two enamel fragments of bovineteeth were flattened and polished (4x4x3 mm) and dividedinto four groups according to bleaching treatment VL- VioletLED; HP- 7.5% hydrogen peroxide; HP+VL- 7.5% hydrogenperoxide + violet LED; C- No bleaching (control). Before thetreatments, all specimens were immersed in 20 mL of blacktea for six days, changing solutions every 24 h to simulatethe staining of specimens. Forty fragments were used toanalyze surface roughness (n=10) and 12 fragments wereused for the morphological analysis (SEM) (n=3).Results:
The data were submitted to one-way ANOVA and a post-hocTukey test. The lower roughness values was observed for thegroup that did not receive bleaching treatment (C), differingsignificantly only from the group bleached with 7.5% hydrogenperoxide + violet LED (HP+VL) (p=0.0077). The remaininggroups did not show significant differences in roughnessvalues (p>0.05). The scanning electron microscopy analysisshowed irregularities on the enamel surface regardless ofthe treatment received.Conclusion:
The results showedthat bleaching treatments with violet LED associated withlow-concentration hydrogen peroxide gels (7.5%) increasethe surface roughness of tooth enamel
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tooth Bleaching
/
Dental Enamel
/
Hydrogen Peroxide
Type of study:
Risk factors
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2020
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Herminio Ometto University Center/BR
/
University of Santo Amaro/BR
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