Micromorphology and microhardness of enamel after treatment with home-use bleaching agents containing 10% carbamide peroxide and 7.5% hydrogen peroxide

Sasaki, Robson Tetsuo; Arcanjo, Alex José; Flório, Flávia Martão; Basting, Roberta Tarkany

doi:10.1590/s1678-77572009000600014

Cited by 68 publications

(73 citation statements)

References 12 publications

(17 reference statements)

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“…The highest micro-roughness in conventional method was due to the high pH level of Kimia gel used in the process. The results of this study were in accordance with the studies of Pinto et al, 11 Dominguez et al, 12 De Vasconcelos et al, 13 and Sasaki et al, 14 which reported that in-office bleaching increases surface roughness of enamel. The results of the present study were in contrast with the results of McGuckin et al, 15 Mondelli et al 16 and Borges et al 17 which indicated that in conventional bleaching procedure, the enamel micro-roughness could not increase.…”

Section: Discussionsupporting

confidence: 92%

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

Mirzaie

Yassini

Ganji³

et al. 2016

J Lasers Med Sci

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Introduction: Bleaching process can affect surface roughness of enamel, which is a vital factor in esthetic and resistance of tooth. The aim of this study was to compare surface roughness of enamel in teeth bleached using Diode and Neodymium-Doped Yttrium Aluminium Garnet (Nd: YAG) lasers with those bleached using conventional method. Methods: In this study, 75 anterior human teeth from upper and lower jaws (These teeth extracted because of periodontal disease) were randomly divided into 5 groups. Group 1: Laser white gel (Biolase, USA) with 45% hydrogen peroxide concentration and GaAlAs Diode laser (CHEESE TM , GIGAA, China), group 2: Heydent gel (JW, Germany) with 30% Hydrogen peroxide concentration and Diode laser, group 3: Laser white gel and Nd:YAG laser (FIDELIS TM , Fotona, Slovenia), group 4: Heydent gel and Nd:YAG laser and group 5: The Iranian gel Kimia (Iran) with 35% hydrogen peroxide concentration were used. Surface roughness of the samples was measured using the Surface Roughness Tester system (TR 200 Time Group, Germany) before and after bleaching. In each group, one sample was randomly selected for SEM analysis. Results:The results showed that the mean surface roughness of the teeth before and after bleaching had a significant difference in all the study groups. It was indicated that after bleaching, the mean surface roughness had increased in all the study groups. The highest surface roughness was seen in the conventional bleaching group and the lowest surface roughness was reported in group 3 (laser white gel + diode laser), in which the average surface roughness increased by only 0.1 µm. Conclusion: It was concluded that using the Laser white gel and the diode laser for bleaching resulted in the least surface roughness compared to conventional method.

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Section: Discussionsupporting

confidence: 92%

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

Mirzaie

Yassini

Ganji³

et al. 2016

J Lasers Med Sci

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“…From the toxological point of view pomegranate peel extract is safe & non-toxic. [10][11][12] Oligomeric proanthocyanidins are a class of polyphenolic bioflavonoids found in fruits and vegetables (grape seed extract, cranberries, pine bark extract, hazel nut tree leaves, lemon tree bark etc). They have free radical scavenging and antioxidant activity with added antibacterial, antiviral, anti-inflammatory, anti-allergic, anticarcinogenic, and vasodilatory actions.…”

Section: Discussionmentioning

confidence: 99%

Effect of Three Different Antioxidants on Shear Bond Strength of Composites To Bleached Enamel - An In Vitro Study

2017

IJDA

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ABSTRACT:Context: Bleaching can result in reduced bond strength of composite resin to enamel. To overcome this, bonding procedure should be delayed by a period of 24 hours to three weeks to regain the reduced shear bond strength due to bleaching. To avoid this waiting period various methods have been projected. Among all the methods, the antioxidant treatment has shown immediate improvement in shear bond strength values. Objective:The aim of this in vitro study was to evaluate and compare the effect of 10% Sodium ascorbate, 10% Pomegranate peel extract and 10% Grape seed extract on the bond strength of composite resin to bleached enamel. Materials and Methods: Forty flat enamel surfaces were prepared from freshly extracted human premolars using a low speed diamond saw. Then the specimens were divided into four random groups (n = 10). All the groups were treated with 30% H2O2. The specimens in Group I were bonded immediately after bleaching, whereas Group II, III and IV were treated with antioxidants Sodium ascorbate, Pomegranate peel extract and Grape seed extract respectively. After preparation, a standard shaped resin composite was applied to all specimens. The teeth were stored in deionized water for 24hrs at 37°C and a universal testing machine determined their shear bond strength. The data were evaluated using ANOVA and Tukey Post Hoc tests.Results: There was a statistically significant difference in the mean shear bond strength among all the groups (p < 0.001). 10% Grape seed extract showed significantly higher shear bond strength followed by 10% Pomegranate peel extract and 10% Sodium ascorbate. Conclusion:The use of antioxidant immediately after bleaching the enamel surface, completely neutralizes the deleterious effects of bleaching and increases the shear bond strength significantly. Among the antioxidants, 10% Grape seed extract application after bleaching showed better bond strength.

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“…Sasaki et al 45 observed that home‐bleaching agents may lead to microalterations in the surface micromorphology of enamel with no alterations in microhardness. Ito and Momoi (2011) demonstrated, on SEM images, that the increase in enamel surface roughness, and erosion depth due to 30% hydrogen peroxide were smaller when the bleaching product was in addition with NaHCO2.…”

Section: Discussionmentioning

confidence: 99%

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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Micromorphology and microhardness of enamel after treatment with home-use bleaching agents containing 10% carbamide peroxide and 7.5% hydrogen peroxide

Cited by 68 publications

References 12 publications

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

A Comparative Study of Enamel Surface Roughness After Bleaching With Diode Laser and Nd: YAG Laser

Effect of Three Different Antioxidants on Shear Bond Strength of Composites To Bleached Enamel - An In Vitro Study

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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