Influences of Light-emitting Diode Illumination Bleaching Technique on Nanohardness of Computer-aided Design and Computer-aided Manufacturing Ceramic Restorative Materials

Juntavee, Niwut; Juntavee, Apa; Saensutthawijit, Phuwiwat

doi:10.5005/jp-journals-10024-2236

Cited by 11 publications

(6 citation statements)

References 22 publications

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“…Thus, the cleavage effect that hydrogen peroxide has on the resin matrix of these resin polymers is responsible for the decrease in surface hardness. These results were in agreement with Juntavee N et al in 2018 (23) whom conducted an in vitro study to evaluate the effect of light-emitting diode (LED) illumination bleaching technique (35% hydrogen peroxide) on the surface nano-hardness of various (CAD/CAM) ceramic materials (Lava™ Ultimate, Vita Enamic®, IPS e.max® CAD, inCoris® TZI, and Prettau® zirconia), with and without LED illumination. Results denoted that using 35% hydrogen peroxide bleaching agent with LED illumination exhibited more reduction in surface hardness of dental ceramic than what was observed without LED illumination.…”

Section: Regardless Of the Bleaching Protocol Used Celtrasupporting

confidence: 86%

Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials

Hussein

Wagdy

Nasser³

2020

Egyptian Dental Journal

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Section: Regardless Of the Bleaching Protocol Used Celtrasupporting

confidence: 86%

Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials

Hussein

Wagdy

Nasser³

2020

Egyptian Dental Journal

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“…Professional treatment is performed by the dentist; while home treatment can be done at home by the patient [14]. Although the results of HP on the color change of resin-based composites are still controversial, it is mainly agreed that different types of resinbased composites reveal different resistance to bleaching [18][19][20]. Bleaching materials eliminate the extrinsic stains, but they do not bleach the composite as they used to bleach tooth structure.…”

Section: Introductionmentioning

confidence: 99%

Color Matching of Universal Shade Resin-Based Composite with Natural Teeth and Its Stability before and after In-Office Bleaching

Alhabdan

Alshamrani

AlHumaidan

et al. 2022

International Journal of Biomaterials

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Objectives. Esthetics is an essential issue for the long-term success of composite resin restoration. Therefore, this study aimed to view the esthetics of universal shade composite resin restorations and to assess its color matching before and after bleaching. Materials and Methods. Overall, 40 freshly extracted premolars were mounted in an acrylic resin mold, and Class V cavities were then prepared and restored by OMNICHROMA composite (Tokuyama Dental, Tokyo, Japan) and polished with 2-step polishing system. Baseline color analysis was performed using VITA Easyshade V digital spectrophotometer, and another color analysis was carried out 24 hours after storage in distilled water. In-office bleaching was carried out, and color measurements were taken after bleaching and 2 weeks postbleaching. The data were statistically analyzed using SPSS 26.0 Windows version statistical software. Changes were considered statistically significant at P = 0.05. Results. ΔE value of OMNICHROMA restoration before and after restoration was 6.474, 3.529 before and after bleaching, and 3.651 two-weeks postbleaching. In-office bleaching was effective in bleaching the OMNICHROMA specimens as the restoration showed positive ΔL ∗ values, which indicated that the specimens were lighter in color after bleaching; however, the bleaching effect was not maintained after 2 weeks. Conclusion. OMNICHROMA universal shade composite resin restoration showed different color matching values with the adjacent enamel of class Vs. The material appeared lighter in shade postbleaching, and the color change was not maintained 2 weeks postbleaching.

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“…The higher the HP concentration, the greater the de-pigmentation process, resulting in stain removal, and the color changes of RBCs [ 20 ]. Although the effects of HP on the color change of RBCs remain contentious, it is generally agreed that different types of resin-based composites reveal different resistances to bleaching [ 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Color Stability and Staining Susceptibility of Direct Resin-Based Composites after Light-Activated In-Office Bleaching

et al. 2021

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This study evaluated color stability and staining susceptibility of five direct resin-based composites (RBCs) subjected to light-activated in-office bleaching with 40% hydrogen peroxide (HP). The test materials included 5 RBCs, which consisted of one nano-filled, one sub-micron, one bulk-filled, and two nano-hybrid RBC types. Ten disc-shaped specimens of each RBC were fabricated and divided into bleaching (BLE) and non-bleaching (CON) groups (n = 5 for each group). Specimens were then immersed in red wine solution over 4 h. A spectrophotometer was used to obtain Commission Internationale de l’Eclairage (CIE) L*a*b* parameters for each of the following periods tested: before bleaching (TBA), after bleaching (TBL), and after staining (TST). Color stability and staining susceptibility were evaluated using two metrics, CIEDE2000 color differences (ΔE00) and whiteness variations using the whiteness index (ΔWID). Data were analyzed using repeated measures two-way analysis of variance (ANOVA) (α = 0.05). Statistically significant and clinically unaccepted ΔE00 and ΔWID were observed for all tested specimens between TBA and TBL. The nano-hybrid type RBCs showed the highest discoloration among materials after bleaching treatment. The BLE group exhibited significantly higher ΔE00 and ΔWID than the CON group for all the tested RBCs between TBA and TST. The sub-micron type RBC showed the highest discoloration among materials after immersion in the red wine. Conclusion. The light-activated in-office bleaching with 40% HP’s influences on color and whiteness index were material-dependent. The use of bleaching treatment also increased the susceptibility to red wine for all RBCs.

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Influences of Light-emitting Diode Illumination Bleaching Technique on Nanohardness of Computer-aided Design and Computer-aided Manufacturing Ceramic Restorative Materials

Cited by 11 publications

References 22 publications

Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials

Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials

Color Matching of Universal Shade Resin-Based Composite with Natural Teeth and Its Stability before and after In-Office Bleaching

Color Stability and Staining Susceptibility of Direct Resin-Based Composites after Light-Activated In-Office Bleaching

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