Effect of Er,Cr:YSGG laser irradiation on bovine enamel surface during in-office tooth bleaching ex vivo

Dionysopoulos, Dimitrios; Strakas, Dimitrios; Koliniotou-Koumpia, Eugenia; Koumpia, Effimia

doi:10.1007/s10266-016-0273-2

Cited by 35 publications

(22 citation statements)

References 30 publications

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“…Therefore, it might be said that preference of Er,Cr:YSGG laser in bleaching agents activation seems safer than the diode laser. In line with our study, Dionysopoulos et al 39 asserted that Er;Cr:YSGG laser‐activated bleaching process does not considerably change enamel mineral content or surface morphology compared to the conventional chemical whitening procedure.…”

Section: Discussionsupporting

confidence: 92%

Micro‐computed tomography analysis of enamel structure after different bleaching treatments

Yalçın

Sürmelioğlu

Orhan

2021

Color Research & Application

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The aim of this investigation is to assess effect of three different bleaching techniques on structural integrity, mineral density and volume of enamel via micro‐computed tomography (micro‐CT) and examine color changes by CIELAB and CIEDE2000 formulas. Twenty‐four upper premolar teeth were randomly separated into three different groups (n = 8) (group 1, 35% hydrogen peroxide (HP) gel with Er,Cr:YSGG laser activation; group 2, 35% HP gel with diode laser activation; group 3, 35% HP gel with chemically activation). High‐resolution micro‐CT system (Bruker Skyscan 1275, Kontich, Belgium) was carried out to scan samples. Each tooth was scanned twice before‐after application of bleaching with same scanning parameters. Structural thickness, structural separation, fragmentation index, mineral density, and mineral volume of enamel were calculated for each region of interest (ROI). Color changes were measured with spectrophotometer and calculated with CIELAB and CIEDE2000 formulas. Data analysis was made with one‐way ANOVA with post‐hoc LSD. Micro‐CT analysis indicated that statistically significant differences were found in structural thickness, and separation, mineral density, and mineral volume of enamel for different ROIs before and after whitening for whole groups (P < .05). Significant differences were detected among inter‐groups for these parameters in different ROIs (P < .05). There was no significant difference among groups for color alterations (P > .05). All bleaching applications exhibited similar efficiency on the enamel surface. Nevertheless, bleaching process with Er,Cr:YSGG laser had less negative effects on enamel as it showed less change in enamel compared to other bleaching treatments. Micro‐CT analysis of histomorphometric parameters can be useful for further mineralization studies of dental hard tissues.

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Section: Discussionsupporting

confidence: 92%

Micro‐computed tomography analysis of enamel structure after different bleaching treatments

Yalçın

Sürmelioğlu

Orhan

2021

Color Research & Application

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“…The composition of artificial saliva was as follows: 0.103 g/l of CaCl 2 , 0.019 g/l MgCl 2 ·6H 2 O, 0.544 g/l KH 2 PO 4 , and 2.24 g/l KCl, and buffer (TCP-KOH) was added to adjust the pH to 7. [ 9 ]…”

Section: Methodsmentioning

confidence: 99%

Effect of novel charcoal-containing whitening toothpaste and mouthwash on color change and surface morphology of enamel

et al. 2020

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Purpose: The aim of this in vitro study was to investigate the effectiveness of a novel charcoal-containing whitening toothpaste and a mouthwash on tooth color change and the alterations of enamel that may be induced after toothbrushing, corresponding to a 90-day period. Materials and Methods: Forty human canines were used, stained with coffee, and divided into four groups ( n = 10) as follows: Group 1 (control) submitted to toothbrushing with deionized water, Group 2 with a regular toothpaste, Group 3 with a whitening toothpaste (1% charcoal), and Group 4 with the same whitening toothpaste in combination with a mouthwash (1% charcoal and 0.5% H 2 O 2 ). After the treatments, ΔΕ of the teeth was evaluated using an ultraviolet/Vis spectrophotometer, whereas the changes in surface morphology were observed by means of a confocal microscope. Results: The whitening toothpaste increased significantly ΔΕ (40.5%) compared to the control group ( P < 0.001). In addition, the tested whitening toothpaste also increased ΔΕ (17.7%) compared to the regular toothpaste ( P = 0.023). The whitening toothpaste presented smoother surfaces after toothbrushing, but more heterogeneous with numerous large craters, whereas the whitening mouthwash did not influence surface morphology changes. Conclusions: Charcoal-containing toothpastes may enhance the whitening of the teeth, but they should be used carefully due to changes that may induce on enamel. The patients should consult a dental professional for proper use. A charcoal-containing mouthwash in combination with whitening toothpastes probably cannot offer additional whitening effect.

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“…The distinction in results may be attributed to the difference of light source used in the bleaching procedure (70) . Dionysopoulos et al, (2017) found that a slight reduction in enamel surface micro-hardness and changes in surface morphology may occur when high-concentrated bleaching agents were used for power in-office tooth bleaching and there was acceleration in bleaching process. Dissimilarity in results may be attributed to difference in source of activation, where in the current study LED was used whereas Er,Cr:YSGG laser was used in the other study which advised the use of Er,Cr:YSGG laser in-office tooth bleaching safely (71) .…”

Section: Discussionmentioning

confidence: 99%

Effect of different methods of vital tooth bleaching on the resistance of enamel to erosion using Energy–Dispersive X-Ray Spectrometry analysis

Attia

Elbahrawy

Essa

2019

Egyptian Dental Journal

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Objectives: the objective of the current study was to determine the effect of different methods of vital tooth bleaching (power in-office, at-home and over the counter) on the resistance of enamel to erosion. Material and methods: Square enamel sections (4 mm × 4 mm × 3 mm) were obtained from the middle third of the crown of bovine teeth and then embedded in self-curing acrylic resin blocks measuring (2 cm wide and 3 cm high). The samples were divided randomly into 4 groups according to the method of bleaching used. Group 1(control group): where all specimens of the group were placed in artificial saliva at 37 0 C during the study period. Group 2 (power in-office bleaching): The gel was applied directly on the enamel surface of the specimens where the thickness of the gel was about 1-2 mm, then the LED bleaching device was used. The lamp was located close to enamel surface, then it was turned on for 15 minutes for total application time 45 minutes. Group 3 (Crest 3D White Luxe Supreme FlexFit White strips (over the counter) : the strips were applied to the enamel surface for 30 min twice daily for 14 days according to manufacturer instructions. Group 4 (At-home bleaching): bleaching gel was applied to the enamel surface. Teeth were placed for 6 hours at 37 0 C daily for 8 days. Then, all the samples were subjected to erosive challenge where the bleached samples and the samples of control group were immersed in 1% citric acid solution. Mineral analysis via EDS was carried out before bleaching (base line), then of bleached enamel and finally after erosive cycle. Two representative samples of each group after each step were examined by scanning electron microscope. Results: There was a significant difference regarding the percentage weight of (Ca%), (P%) and (Ca/P%) among the four tested groups. The difference was not significant between group 1 and group 4 after erosion. Conclusions: 1-At-home beaching is considered the least harmful to enamel compared to power in-office and over the counter bleaching materials, and it is more resistant to erosive challenges. 2-Bleaching agents containing calcium decrease the adverse effects of the bleaching procedure. 3-Bleached enamel is less resistant to erosion especially when power in -office or over the counter protocol is used.

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Effect of Er,Cr:YSGG laser irradiation on bovine enamel surface during in-office tooth bleaching ex vivo

Cited by 35 publications

References 30 publications

Micro‐computed tomography analysis of enamel structure after different bleaching treatments

Micro‐computed tomography analysis of enamel structure after different bleaching treatments

Effect of novel charcoal-containing whitening toothpaste and mouthwash on color change and surface morphology of enamel

Effect of different methods of vital tooth bleaching on the resistance of enamel to erosion using Energy–Dispersive X-Ray Spectrometry analysis

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