scholarly journals In vitro evaluation of experimental light activated gels for tooth bleaching

2019 ◽  
Vol 18 (5) ◽  
pp. 1009-1019 ◽  
Author(s):  
Christoph Kurzmann ◽  
Jeroen Verheyen ◽  
Michael Coto ◽  
Ramachandran Vasant Kumar ◽  
Giorgio Divitini ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Metabolic Activity ◽  
Tooth Bleaching ◽  
In Vitro Evaluation

Gels containing TiO2/Ag or TiO2 particles are less cytotoxic than hydrogen peroxide-containing gels. TiO2/Ag gel exhibited a stronger reduction of metabolic activity and viability than TiO2 gel.

In Vitro Evaluation of Giomers Microleakage After Exposure to 33% Hydrogen Peroxide: Self-etch vs Total-etch Adhesives

10.2341/05-16 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 227-232 ◽  
Author(s):  
S. Deliperi ◽  
D. N. Bardwell ◽  
C. Wegley ◽  
M. D. Congiu
Keyword(s):  
Hydrogen Peroxide ◽  
Clinical Relevance ◽  
Adhesive System ◽  
In Vitro Evaluation ◽  
Dye Penetration ◽  
Self Etch

Clinical Relevance Microleakage of a total-etch adhesive system was not influenced by the application of hydrogen peroxide; conversely, enamel dye penetration significantly increased for a self-etching primer.

scholarly journals In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide

2012 ◽  
Vol 26 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Fábio Garcia Lima ◽  
Talita Aparecida Rotta ◽  
Sonara Penso ◽  
Sônia Saeger Meireles ◽  
Flávio Fernando Demarco
Keyword(s):  
Hydrogen Peroxide ◽  
In Vitro Evaluation ◽  
Whitening Effect ◽  
Mouth Rinses

In-office tooth bleaching with chitosan-enriched hydrogen peroxide gels: in vitro results

2021 ◽  
Author(s):  
Núbia Inocencya Pavesi Pini ◽  
Marcella Ricomini Piccelli ◽  
Waldemir Franscisco Vieira-Junior ◽  
Laura Nobre Ferraz ◽  
Flávio Henrique Baggio Aguiar ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Tooth Bleaching

scholarly journals In Vitro Evaluation of the Risk of Inducing Bacterial Resistance to Disinfection Treatment with Photolysis of Hydrogen Peroxide

PLoS ONE ◽  
2013 ◽  
Vol 8 (11) ◽  
pp. e81316 ◽  
Author(s):  
Hiroyo Ikai ◽  
Yu Odashima ◽  
Taro Kanno ◽  
Keisuke Nakamura ◽  
Midori Shirato ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Bacterial Resistance ◽  
In Vitro Evaluation

scholarly journals Effect of violet led associated with low-concentration hydrogen peroxide on enamel surface roughness

2020 ◽  
Vol 19 ◽  
pp. e209197
Author(s):  
Nathalia Eugenio ◽  
Innocenzo Scandiffio ◽  
Marcia Hiromi Tanaka ◽  
Ana Luisa Botta Martins de Oliveira ◽  
Renata Siqueira Scatolin
Keyword(s):  
Hydrogen Peroxide ◽  
Surface Roughness ◽  
Morphological Analysis ◽  
Tooth Enamel ◽  
Enamel Surface ◽  
Tooth Bleaching ◽  
Bleaching Treatment ◽  
One Way Anova ◽  
Scanning Electron

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.

scholarly journals Do different bleaching protocols affect the enamel microhardness?

2015 ◽  
Vol 09 (01) ◽  
pp. 025-030 ◽  
Author(s):  
Rafael Francisco Lia Mondelli ◽  
Taisa R. Conti Garrido Gabriel ◽  
Fabio Antonio Piola Rizzante ◽  
Ana Carolina Magalhães ◽  
Juliana Fraga Soares Bombonatti ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Artificial Saliva ◽  
In Vitro Study ◽  
Tooth Bleaching ◽  
Control Group ◽  
Light Activation ◽  
Surface Microhardness ◽  
Surface Alteration ◽  
Bovine Enamel

ABSTRACT Objective: Tooth bleaching tends to increase enamel roughness and porosity, in addition to reducing surface microhardness. The aim of this in vitro study was to evaluate the effects of bleaching treatments using different hydrogen peroxide (HP) concentrations, with and without light activation on bovine enamel microhardness. Materials and Methods: The buccal surfaces of sixty bovine incisors were flattened and polished and the enamel specimens were divided into six groups: G1: Control, exposed to artificial saliva; G2: 35% HP applied in two sessions (45’ each); G3: 35% HP applied in two sessions (3 × 15’ each); G4: 35% HP applied in one session (3 × 7’30”) plus hybrid light (HL); G5: 25% HP applied in one session (3 × 7’30”) plus HL; and G6: 15% HP applied in one session (3 × 7’30”) plus HL. After the treatment, the enamel specimens were stored in artificial saliva. The surface microhardness (Knoop) was measured at the baseline, 24 h and 7 days after bleaching. The data was analyzed using the ANOVA test, followed by the Tukey–Krummer test (P < 0.05). Results: All bleaching procedures lead to a decrease in surface microhardness when compared with the control group after 24 h. The lowest change in surface microhardness was found in the specimens treated with 15% HP plus HL. However, 35% HP plus HL induced the highest decrease in surface microhardness. After 7 days of remineralization, the surface microhardness returned to normal levels for all bleached specimens. Conclusion: Therefore, it can be concluded that the bleaching protocols caused a slight enamel surface alteration. However, the remineralization process minimized these effects.

scholarly journals Effect of pigmenting agents on tooth enamel staining during immediate tooth whitening: an in vitro study

2020 ◽  
Vol 49 ◽  
Author(s):  
Daniela Luzimar CLAUDINO ◽  
João Victor Frazão CÂMARA ◽  
Osmar de AGOSTINHO NETO ◽  
Ericles Otávio SANTOS ◽  
Gisele Damiana da Silveira PEREIRA ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Color Change ◽  
Tooth Enamel ◽  
Soft Drink ◽  
In Vitro Study ◽  
Tooth Bleaching ◽  
Control Group ◽  
Water Control ◽  
Mate Tea

Abstract Introduction Considering the increased search for esthetic procedures, questions emerge about the maintenance and regression of color, especially regarding the need to restrict dark foods during bleaching procedures or their influence on the stability and effectiveness of the treatment. Objective To assess the influence of staining agents on tooth enamel during immediate bleaching treatment with 35% hydrogen peroxide. Material and method Sixty bovine teeth were divided into six groups (G) (n=10): G1: distilled water (control); G2: coffee; G3: cola soft drink; G4: wine; G5: mate tea; and G6: industrialized açaí. The samples were subjected to immediate bleaching using 35% hydrogen peroxide for 21 days (three applications of 15 minutes per session, every seven days) and pigment immersion between each session for 15 minutes. The color was assessed before starting bleaching and after 21 days, using a spectrophotometer. The data obtained were subjected to one-way ANOVA and heteroscedasticity analysis by the Welch and Brown-Forsythe tests. The Tamhane test was used for group comparison. Result The color change was visible to the naked eye, considering the mean ΔE in all groups tested was higher than 3.7. However, there was no statistical difference between the control group and the groups assessed. Conclusion The contact of staining agents on bovine tooth enamel did not affect the final result of the immediate tooth bleaching.

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