The efficacy of laser-assisted in-office bleaching and home bleaching on sound and demineralized enamel

Ahrari, Farzaneh; Akbari, Majid; Mohammadpour, Sakineh; Forghani, Maryam

doi:10.5978/islsm.15-or-15

Cited by 24 publications

(28 citation statements)

References 31 publications

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“…Our study had a significant increase in the lightness values (L*) and a decrease in the blueness (b*) and greenness (a*) values which directed the ∆E toward the lighter color scale indicating color improvement. 19 It is noteworthy to mention that although most of the stains (orange/brown) had a significant color improvement and were efficiently bleached, yet some stains (gray/black) bleached to a lesser extent. This variation in the color outcome (∆E 1.1-24.7) can be explained by the different stain history of the ACLs (chemical composition, type, and depth), associated with the variety of patients enrolled in the study.…”

Section: Discussionmentioning

confidence: 98%

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Bleaching Stained Arrested Caries Lesions: In vivo Clinical Study

et al. 2020

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Objective Conservative approaches to esthetically treat stained arrested caries lesions (s-ACLs) have not been explored in clinical studies. This study aims to investigate the efficacy of in-office dental bleaching agent, as a conservative approach, to esthetically treat s-ACLs. Materials and Methods Twelve patients (n = 46) presented with s-ACLs were treated with 40% hydrogen peroxide (in-office bleaching protocol; 20 minutes × 3). Color values were measured using a spectrophotometer (CIE L*a*b*), aided with digital photography to assess visual color change clinically. Measurements were taken for each specimen at baseline and immediately after bleaching. Statistical Analysis The color change calculated before and after bleaching for each dental substrate was analyzed using paired t-test (α = 0.05). Results The bleached s-ACLs had a significant increase in L* values (p < 0.001), and a significant decrease in both a* (p = 0.001) and b* (p = 0.007) values, indicating lighter color improvement (bleaching efficacy). The baseline mean L*, a*, and b* values were 61.5, 2, and 15.4, respectively, and after bleaching were 67.7, 1.4, and 13.3, respectively, with a mean increase in ∆E of >7.9, which resulted in a visible clinical stain improvement as orange/light brown stains were removed completely, while gray/black stains improved to a lesser extent. Conclusion Significant color improvement was observed when the in-office bleaching protocol (40% hydrogen peroxide) was used in orange/brown s-ACLs. However, it showed lesser improvement in gray/black s-ACLs.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Bleaching Stained Arrested Caries Lesions: In vivo Clinical Study

et al. 2020

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“…In the present study, a mild hydrogen peroxide agent was added to NaHCO3 in order to evaluate whether 1.5% H2O2 increases the whitening effect of the resulting mixture. It is believed that the decomposition of hydrogen peroxide leads to the formation of hydroxyl, perhydroxyl or superoxide anion radicals, which degrade high-molecular pigments to achromic low-molecular substances, thus producing the whitening effect ( 8 , 23 , 24 ). This study found no significant difference in removing tooth stain between the agent containing sodium bicarbonate and that containing sodium bicarbonate + 1.5% H2O2.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of sodium bicarbonate combined with hydrogen peroxide and CPP-ACPF in whitening and microhardness of enamel

Ahrari¹,

Hasanzadeh²,

Rajabi³

et al. 2017

J Clin Exp Dent

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BackgroundThis study investigated the effects of sodium bicarbonate (NaHCO3) combined with 1.5% hydrogen peroxide (H2O2) and casein phosphopeptide amorphous calcium phosphate fluoride (CPP-ACPF) on color and microhardness of enamel.Material and MethodsSeventy-five bovine incisors were immersed in a tea solution for 7.5 days. The specimens were randomly divided into five groups according to the whitening agent applied: 1) 94% NaHCO3, 2) a blend of 94% NaHCO3 and CPP-ACPF, 3) a blend of 94% NaHCO3 and 1.5% H2O2, 4) a blend of 94% NaHCO3, 1.5% H2O2 and CPP-ACPF, 5) control. The whitening procedure was performed for 10 times over 10 days. At each day, the buccal surfaces were covered with whitening agents for 5 minutes and then brushed for 30 seconds. After the 10 days, the teeth were again immersed in a tea solution for 10 minutes. Color assessment was performed at baseline (T1), after the first staining process (T2), after the whitening procedure (T3), and after the second staining process (T4). Finally, the specimens were subjected to microhardness test.ResultsThere was a statistically significant difference in the color change between T2 and T3 stages among the study groups (p<0.05), with the greatest improvement observed in group 4. Microhardness was significantly greater in groups 2 and 4, as compared to the other groups (p<0.05).ConclusionsThe combination of 94% NaHCO3, 1.5% H2O2 and CPP-ACPF was effective in improving color and microhardness of teeth with extrinsic stains and could be recommended in the clinical situation.

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“…The main materials used for dental bleaching are hydrogen peroxide for in-office bleaching and carbamide peroxide for at-home bleaching [11]. In-office bleaching utilizes a source of light or laser to activate the agent [12]. There are variable reports on the effectiveness of each of them depending on the concentration of the agent, application time, number of applications and the activating agent [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…In-office bleaching utilizes a source of light or laser to activate the agent [12]. There are variable reports on the effectiveness of each of them depending on the concentration of the agent, application time, number of applications and the activating agent [12,13]. The use of other materials such as chlorine dioxide has also been reported [14].…”

Section: Introductionmentioning

confidence: 99%

Arabic Coffee as a Potential Alternative to Black Coffee in the PostBleaching Period: An in-vitro Study

Borzangy

Qutub

Alamri

et al. 2018

Pesqui. bras. odontopediatria clín. integr.

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Objective: To investigate the effect of Arabic coffee on bleached teeth in comparison to black coffee. Material and Methods: Forty teeth (sound maxillary or mandibular premolars with no carious lesions) were randomly selected into 4 groups (A, B, C and D). One group (A) did not receive bleaching and was incubated in saline. The second group (B) was bleached and then incubated in saline. The last two groups were bleached and were immersed in either Arabic coffee (C) or black coffee (D). Color recording of the samples was always carried out as near to their mid-buccal surfaces as possible using VITA Easyshade Advance System. Color measurements were carried out using a digital spectrophotometer at baseline and after short-term and long-term immersion. Data were subjected to two way ANOVA and T-test. The level of significance was set at was set at 0.05. Results: Results show that immersion in Arabic coffee resulted only in significant reduction in the b* color value upon long-term immersion (i.e. a reduction in the yellow hue). Black coffee on the other hand resulted in significant: reduction in lightness, increased red tint and increased yellow hue altogether. Conclusion: The use of Arabic coffee did not deteriorate color, with the only significant change being the reduction of yellowish hue. Arabic coffee could be an alternative to black coffee after bleaching.

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The efficacy of laser-assisted in-office bleaching and home bleaching on sound and demineralized enamel

Cited by 24 publications

References 31 publications

Bleaching Stained Arrested Caries Lesions: In vivo Clinical Study

Bleaching Stained Arrested Caries Lesions: In vivo Clinical Study

Effectiveness of sodium bicarbonate combined with hydrogen peroxide and CPP-ACPF in whitening and microhardness of enamel

Arabic Coffee as a Potential Alternative to Black Coffee in the PostBleaching Period: An in-vitro Study

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