Effect of Hydrogen Peroxide Concentration on Enamel Color and Microhardness

Borges, Alessandra Bühler; Zanatta, Rayssa Ferreira; Barros, AP; Silva, L C; Pucci, César Rogério; Torres, C.R.G.

doi:10.2341/13-371-l

Cited by 62 publications

(72 citation statements)

References 32 publications

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“…In the present study, the DC was measured following 24h of specimen preparation, since the polymerization of resin-based materials can increase over time, (19) with higher values being reached after 24h (18). The results showed higher DC values for the VS group as compared with the other groups, which can probably be explained by the lower amount of oxygen observed for this group in the EDS chemical evaluation (Table 4).…”

Section: Discussionmentioning

confidence: 79%

“…The results of the color readings were quantified in terms of the L*, a*, b* coordinate values established by the Commission Internationale de l'Eclairage (CIELAB system), in which the L* axis represents the degree of lightness within a sample and ranges from 0 (black) to 100 (white). The a* plane represents the degree of green/red, and the b* plane represents the degree of blue/ yellow (18). The measurement of color change after aging process was made calculating the variation (delta -D) of L* (DL), a* (Da), and b* (Db).…”

Section: Color Stabilitymentioning

confidence: 99%

“…The immersion in artificial saliva aimed to simulate the oral environment and is frequently used in studies of color evaluation as the media for samples hydration and storage (18). The artificial saliva composition was chloramine 0.5%; potassium chloride 20.9 g; sodium chloride 28.8 g; magnesium chloride 1.86 g; calcium chloride 5.54 g; potassium phosphate 10.86 g; monobasic potassium phosphate 26.78 g; sorbitol 1.42 g; sodium benzoate 0.034 g and distilled water 1000 ml.…”

Section: Color Stabilitymentioning

confidence: 99%

“…The measurement of color change after aging process was made calculating the variation (delta -D) of L* (DL), a* (Da), and b* (Db). The total color change (DE) was calculated according to the following formula (18).…”

Section: Color Stabilitymentioning

confidence: 99%

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Influence of Hemostatic Solution on Bond Strength and Physicochemical Properties of Resin Cement

et al. 2017

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The aim of this study was to evaluate the degree of conversion, color stability, chemical composition, and bond strength of a light-cured resin cement contaminated with three different hemostatic solutions. Specimens were prepared for the control (uncontaminated resin cement) and experimental groups (resin cement contaminated with one of the hemostatic solutions) according to the tests. For degree of conversion, DC (n = 5) and color analyses (n = 10), specimens (3 mm in diameter and 2 mm thick) were evaluated by Fourier transform infrared spectroscopy (FTIR) and CIELAB spectrophotometry (L*, a*, b*), respectively. For elemental chemical analysis (n = 1), specimens (2 mm thick and 6 mm in diameter) were evaluated by x-ray energy-dispersive spectroscopy (EDS). The bond strengths of the groups were assessed by the microshear test (n = 20) in a leucite-reinforced glass ceramic substrate, followed by failure mode analysis by scanning electron microscopy (SEM). The mean values, except for the elemental chemical evaluation and failure mode, were evaluated by ANOVA and Tukey's HSD test. The color stability was influenced by storage time (p<0.001) and interaction between contamination and storage time (p<0.001). Hemostop and Viscostat Clear contamination did not affect the DC, however Viscostat increased the DC. Bond strength of the resin cement to ceramic was negatively affected by the contaminants (p<0.001). Contamination by hemostatic agents affected the bond strength, degree of conversion, and color stability of the light-cured resin cement tested.

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Section: Discussionmentioning

confidence: 79%

Section: Color Stabilitymentioning

confidence: 99%

Section: Color Stabilitymentioning

confidence: 99%

Section: Color Stabilitymentioning

confidence: 99%

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Influence of Hemostatic Solution on Bond Strength and Physicochemical Properties of Resin Cement

et al. 2017

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“…10,14 Thus, knowing that the surface texture of the teeth after whitening show morphological changes, the aim of this study is evaluate two nanometer standard pastes and check the possibility of returning the original surface characteristics of whitened tooth.…”

Section: 9mentioning

confidence: 99%

Influence of Standard Load Micro- and Nanopatterned in Surface Roughness of bleached Teeth and submitted to Different Surface Treatments

Nacanichi

Tonetto

Bandéca

et al. 2015

The Journal of Contemporary Dental Practice

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The aim of this study was evaluate the dental enamel after white ning treatment with Opalescence Boost PF™ 38%, correlating the structural alterations in the surface of the enamel with its respective pH and verify if whitened teeth submitted to different finishing and polishing techniques show similar surface texture to healthy teeth (control group). Sixty premolars were divided in 6 groups (n = 10), which had been immersed in artificial saliva during all the experiment. Protocol whitening was performed according to the manufacturer recommendations, and then the specimens were submitted to different polishing technique with Sof-Lex Pop On™ disks, Flex Diamond™ felt disks using two different micrometric polishing pastes (Enamelize™ and Diamond Polish™) and two nanometric polishing pastes (Lummina-E Diamond and Lummina-E Alumina), according to the groups. Representative specimens were analyzed in scanning electronic microscopy (SEM). Whitening gel used in this experiment had modified the morphologic aspect of the enamel surface. It was found that two nanometric polishing pastes (G5 and G6) promoted a less rough surface compared to control group even after the whitening process.

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Comparative clinical and psychosocial benefits of tooth bleaching: different light activation of a 38% peroxide gel in a preliminary case–control study

Calderini

Sciara

Semeria

et al. 2016

Clinical Case Reports

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Key Clinical MessageTooth bleaching is a widespread dental treatment with important psychosocial antecedents and outcomes involved. In the activation of in‐office bleaching agents, a selective light radiation, that is, a diode laser seems to be a positive choice to decrease the time of bleaching without surface modification and with no residual tooth sensitivity for maximum effect and minimal clinical and psychological side effects.

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Effect of Hydrogen Peroxide Concentration on Enamel Color and Microhardness

Abstract: Bleaching with 35% hydrogen peroxide gel was more effective than with the 20% gel, without promoting significant adverse effects on enamel surface microhardness.

Cited by 62 publications

References 32 publications

Influence of Hemostatic Solution on Bond Strength and Physicochemical Properties of Resin Cement

Influence of Hemostatic Solution on Bond Strength and Physicochemical Properties of Resin Cement

Influence of Standard Load Micro- and Nanopatterned in Surface Roughness of bleached Teeth and submitted to Different Surface Treatments

Comparative clinical and psychosocial benefits of tooth bleaching: different light activation of a 38% peroxide gel in a preliminary case–control study

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