Influence of Er, Cr: YSGG laser on root dentin submitted to erosive and/or abrasive challenges
Braz. oral res. (Online)
;
35: e29, 2021. tab, graf
Article
Dans Anglais
| LILACS, BBO
| ID: biblio-1153613
ABSTRACT
Abstract This study evaluated how Er,CrYSGG laser, associated or not with 5% fluoride varnish, influences the surface roughness and volume loss of bovine root dentin submitted to erosive and/or abrasive wear. One hundred and twenty dentin specimens were divided into the groups without preventive treatment (WPT), 5% fluoride varnish (FV); Er,CrYSGG laser irradiation (L), and varnish combined with laser (FV + L). The specimens (n = 10) were subdivided into 1 = erosion (E); 2 = abrasion (A); and 3 = erosion followed by abrasion (E + A). The erosive solution used was a soft-drink (pH = 2.42 at 4ºC) applied in 5-min cycles twice a day for 10d. Abrasive wear involved brushing for 60s with an electric brush (1,600-oscillations/s) at a load of 2.0N. Surface roughness and volume loss were evaluated using a laser scanning confocal microscope. Roughness data were submitted to one-way ANOVA and Tukey post-hoc test. For volume loss, the Kruskal-Wallis and Dunn's post-hoc tests were used (α = 5%). The lowest values of roughness were found in the control areas of all subgroups (p > 0.05). In the experimental area, the [(WPT) + (E+A)] subgroup had a significantly higher roughness (5.712 ± 0.163 μm 2 ) than the other subgroups (p < 0.05). The L and (FV + L) groups had statistically similar roughness, regardless of the type of wear. The (FV + L) group had the lowest volume loss, regardless of the type of wear performed [(FV + L) + (E)] = 7.5%, [(FV + L) + (A) = 7.3%, and [(FV + L) + (E + A)] = 8.1%. The subgroup [(WPT) + (E + A)] had the highest volume loss (52.3%). The proposed treatments were effective in controlling dentin roughness. Laser irradiation can be an effective method to increase root dentin resistance after challenges and limit problems related to non-carious lesions.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Érosion dentaire
/
Lasers à solide
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Braz. oral res. (Online)
Thème du journal:
Dentisterie
Année:
2021
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Universidade de São Paulo/BR
/
Universidade de Uberaba/BR
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