Enamel properties after tooth bleaching with hydrogen/carbamide peroxides in association with a CPP-ACP paste

Vasconcelos, Adriana Alcântara Meira de; Cunha, Ana Gabriela Gama; Borges, Boniek Castillo Dutra; Vitoriano, Jussier de Oliveira; Alves-Júnior, Clodomiro; Machado, Carlos José Saldanha; Santos, Alex José Souza dos

doi:10.3109/00016357.2011.654261

Cited by 39 publications

(44 citation statements)

References 20 publications

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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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“…Structural changes in the enamel have also been described with CP at low concentrations. [54][55][56][57][58] However, in this study, we observed no morphological changes, though a nonsignificant decrease in Ca and P was recorded with respect to the corresponding controls after both 14 hours of application (group CP14) and after 28 hours of treatment (group CP28). Some authors have obtained results similar to our own.…”

Section: Discussioncontrasting

confidence: 54%

Effect of Hydrogen and Carbamide Peroxide in Bleaching, Enamel Morphology, and Mineral Composition: In vitro Study

Llena

Esteve

Forner

2017

The Journal of Contemporary Dental Practice

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Aim:The aim of the study was to evaluate the bleaching effect, morphological changes, and variations in calcium (Ca) and phosphate (P) in the enamel with hydrogen peroxide (HP) and carbamide peroxide (CP) after the use of different application regimens. Materials and methods:Four groups of five teeth were randomly assigned, according to the treatment protocol: HP 37.5% applied for 30 or 60 minutes (HP30, HP60), CP 16% applied for 14 or 28 hours (CP14, CP28). Changes in dental color were evaluated, according to the following formula:. Enamel morphology and Ca and P compositions were evaluated by confocal laser scanning microscope and environmental scanning electron microscopy.Results: ΔE HP30 was significantly greater than CP14 (10.37 ± 2.65/8.56 ± 1.40), but not between HP60 and CP28. HP60 shows greater morphological changes than HP30. No morphological changes were observed in the groups treated with CP. The reduction in Ca and P was significantly greater in HP60 than in CP28 (p < 0.05). Conclusion:Both formulations improved tooth color; HP produced morphological changes and Ca and P a gradual decrease, while CP produced no morphological changes, and the decrease in mineral component was smaller.Clinical significance: CP 16% applied during 2 weeks could be equally effective and safer for tooth whitening than to administer two treatment sessions with HP 37.5%.

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“…As observed in the present investigation, some studies demonstrated that application of 16% CP gel also causes more intense morphological changes on enamel surface and reduction of enamel microhardness compared to lowconcentration CP-gels (10)(11)(12). On the other hand, other studies did not observe significant differences on dental enamel structure between bleached or non-bleached surfaces (21)(22)(23), and also among different concentrations of the CP-gels (23).…”

Section: Discussionmentioning

confidence: 33%

“…This way, since the higher CP concentration causes higher toxic effects in the pulp cells (3), more intense and prevalent tooth sensitivity (8,25), and higher modifications on the mineralized phase of teeth (10)(11)(12), with no benefits in the final esthetic outcome (14,15,25), the 10% CP gel appears to be an interesting alternative for tooth bleaching associated with less intense adverse events. However, based on the fact that data from in vitro study cannot be directly extrapolated to clinical situations, it is strongly recommended that further in vivo studies should be carried out to evaluate the effects of 16% CP gel on enamel, dentin and pulp tissue of patients subjected to tooth bleaching.…”

Section: Discussionmentioning

confidence: 99%

“…However, only a few studies evaluated the effects of these products on tooth structure (4,(10)(11)(12)(13)(14)(15). A recent investigation showed that 16% CP gel caused higher trans-enamel and transdentinal toxic effects to pulp cells than 10% CP gel, which may have been favored by the more intense enamel changes triggered by the 16% CP gel (4).…”

Section: Introductionmentioning

confidence: 99%

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Mineral Loss and Morphological Changes in Dental Enamel Induced by a 16% Carbamide Peroxide Bleaching Gel

et al. 2013

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The aim of this study was to compare the effect of a 16% carbamide peroxide (CP) gel and a 10% CP gel on mineralized enamel content and morphology. Enamel blocks from bovine incisors were subjected to a 14-day treatment (8 h/day) with 10% or 16% CP gels. Knoop microhardness was evaluated before bleaching and at 1, 7 or 14 days after this treatment (50 g/15 s). Mineral content (energy-dispersive x-ray spectroscopy), surface roughness and topography (atomic force microscopy) were evaluated at the 14-day period. Data were analyzed statistically by two-way ANOVA and Tukey's test (α=0.05). Significant microhardness reduction was observed at the 7 th and 14 th days for 10% CP gel, and for all bleaching times for 16% CP gel (p<0.05). At the 14-day period, a significant decrease in Ca and P content, increase on surface roughness (p<0.05) as well as on picks and valleys distance were observed when both bleaching gels were used. These enamel alterations were more intense for 16% CP gel. It was concluded that both CP-based gels promoted loss of mineral structure from enamel, resulting in a rough and porous surface. However, 16% CP gel caused the most intense adverse effects on enamel.

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Enamel properties after tooth bleaching with hydrogen/carbamide peroxides in association with a CPP-ACP paste

Abstract: The use of a CPP-ACP paste mixed to carbamide/hydrogen peroxides can decrease adverse side-effects from tooth bleaching on an enamel surface.

Cited by 39 publications

References 20 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 Hydrogen and Carbamide Peroxide in Bleaching, Enamel Morphology, and Mineral Composition: In vitro Study

Mineral Loss and Morphological Changes in Dental Enamel Induced by a 16% Carbamide Peroxide Bleaching Gel

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