Journal of Conservative Dentistry

ORIGINAL ARTICLE
Year
: 2020  |  Volume : 23  |  Issue : 6  |  Page : 558--562

Microstructural effect of a laser-activated bleaching agent containing titanium dioxide on human enamel


Joao Felipe Besegato1, Aryvelto Miranda Silva1, Eran Nair Mesquita de Almeida1, Alessandra Nara de Souza Rastelli1, Ricardo Takahashi2, Cassia Cilene Dezan-Garbelini2, Márcio Grama Hoeppner3 
1 Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University – UNESP, Araraquara, SP, Brazil
2 Department of Oral Medicine and Paediatric Dentistry, State University of Londrina – UEL, Londrina, PR, Brazil
3 Department of Restorative Dentistry, State University of Londrina – UEL, Londrina, PR, Brazil

Correspondence Address:
Dr. Joao Felipe Besegato
Department of Restorative Dentistry, Araraquara School of Dentistry, 1680 Humaitá Street - 3rd Floor, ZIP Code: 14801-903, Araraquara, SP
Brazil

Aim: This study aimed to evaluate the effect of a laser-activated bleaching agent containing titanium dioxide (TiO2) nanoparticles on enamel roughness and hardness. Materials and Methods: Twenty human premolars were randomized into two groups according to the bleaching treatments performed: HP – 35% hydrogen peroxide and HP + TiO2 – 30% hydrogen peroxide containing TiO2 light-activated by diode laser (980 nm). It was performed two bleaching sessions with an interval of 7 days. Microhardness and roughness of the enamel were assessed at three times: T0 – Before 1st appointment, T1 – after 2nd appointment, and T2–7 days after 2nd appointment. Results: The HP + TiO2 did not cause changes on enamel roughness and hardness and presented the same effects of the HP. Conclusions: Both bleaching agents showed no difference between them. Then, it is possible to conclude that both are viable for clinical use during in-office dental bleaching technique regarding the microstructural changes that they might cause.


How to cite this article:
Besegato JF, Silva AM, de Almeida EN, de Souza Rastelli AN, Takahashi R, Dezan-Garbelini CC, Hoeppner MG. Microstructural effect of a laser-activated bleaching agent containing titanium dioxide on human enamel.J Conserv Dent 2020;23:558-562


How to cite this URL:
Besegato JF, Silva AM, de Almeida EN, de Souza Rastelli AN, Takahashi R, Dezan-Garbelini CC, Hoeppner MG. Microstructural effect of a laser-activated bleaching agent containing titanium dioxide on human enamel. J Conserv Dent [serial online] 2020 [cited 2021 Dec 1 ];23:558-562
Available from: https://www.jcd.org.in/article.asp?issn=0972-0707;year=2020;volume=23;issue=6;spage=558;epage=562;aulast=Besegato;type=0