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Sugimura R, Takamizawa T, Aoki R, Muto R, Hirokane E, Kurokawa H, Kitahara N, Miyazaki M. Influence of in-office whitening on the color matching and surface characteristics of single-shade resin composites. J ESTHET RESTOR DENT 2024. [PMID: 39003761 DOI: 10.1111/jerd.13279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 06/16/2024] [Accepted: 07/02/2024] [Indexed: 07/16/2024]
Abstract
OBJECTIVE The color matching of single-shade resin composites after in-office whitening was investigated. MATERIALS AND METHODS Four single-shade resin composites were used. A total of 35% hydrogen peroxide was used as the whitening agent. The resin composite was placed in a cavity of an artificially discolored bovine tooth. The color differences between the restoration and surrounding enamel before and after whitening were determined based on ΔE*ab, ΔE00, and ΔWID. The color stability, surface roughness (Sa), and surface gloss (GU) of the resin composite alone were also evaluated. Statistical analyses were performed using repeated-measures analysis of variance with the Tukey-Kramer test. RESULTS Based on the 50:50% of perceptibility and acceptability thresholds of ΔE*ab and ΔE00, none of the resin composite restorations were clinically acceptable before or after whitening. Regarding ΔWID, although all resin composites showed "acceptable match" in the baseline, they showed "mismatch" after the third session of whitening. Most of the resin composites alone were stable in color against whitening. CONCLUSIONS Although the single-shade resin composites failed to achieve the expected color matching on discolored teeth either before or after the whitening, the impact of the whitening on the color of the resin composite alone may be negligible.
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Affiliation(s)
- Runa Sugimura
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Toshiki Takamizawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Ryota Aoki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Rei Muto
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Eizo Hirokane
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Hiroyasu Kurokawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Nobuya Kitahara
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
- Team Tokyo Members Clinic
| | - Masashi Miyazaki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
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Manzoli TM, Costa JLDSG, Besegato JF, Zaniboni JF, Galvani LD, Dantas AAR, Kuga MC. Microstructural effect of different concentrations of hydrogen peroxide photoactivated with LED/laser. Photodiagnosis Photodyn Ther 2023; 42:103613. [PMID: 37201771 DOI: 10.1016/j.pdpdt.2023.103613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/08/2023] [Accepted: 05/12/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND The use of different concentrations of hydrogen peroxide (HP) photoactivated with LED/laser sources is recurrent; however, their influence on tooth structure is not yet fully elucidated. This study aimed to evaluate the pH, microhardness and surface roughness of different bleaching protocols photoactivated with LED/laser. METHODS Forty bovine incisors were sectioned (7×7×2mm) and randomized into four groups for analysis of pH (n=5), microhardness and roughness (n=10): HP35, HP6_L, HP15_L, HP35_L. The pH analysis was performed in the initial and final minute of the bleaching protocol. Microhardness and roughness were evaluated before and 7 days after the last bleaching session. Results were obtained from two-way ANOVA for repeated measures and Bonferroni post-test at a significance level of 5%. RESULTS HP6_L showed higher pH and greater stability between the initial and final evaluations, while the other groups showed similar pH with reduced values in the intragroup evaluation. No differences between groups in microhardness and roughness evaluations were observed. CONCLUSIONS Although HP6_L showed higher alkalinity and pH stability, none of the protocols reduced the microhardness and surface roughness of bovine enamel.
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Affiliation(s)
- Tatiane Miranda Manzoli
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - João Felipe Besegato
- School of Dentistry, Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, Brazil.
| | - Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - Lucas David Galvani
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - Andréa Abi Rached Dantas
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo 14801-903, Brazil.
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Guanipa Ortiz MI, dos Santos JJ, Burga Sánchez J, Rodrigues-Filho UP, Aguiar FHB, Rischka K, Lima DANL. Calcium-Polyphosphate Submicroparticles (CaPP) Improvement Effect of the Experimental Bleaching Gels' Chemical and Cellular-Viability Properties. Gels 2023; 9:gels9010042. [PMID: 36661808 PMCID: PMC9857579 DOI: 10.3390/gels9010042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
The aim of this research was to develop and characterize the chemical and cellular-viability properties of an experimental high-concentration bleaching gel (35 wt%-H2O2) containing calcium-polyphosphate particles (CaPP) at two concentrations (0.5 wt% and 1.5 wt%). The CaPP submicroparticles were synthesized by coprecipitation, keeping a Ca:P ratio of 2:1. The CaPP morphology, size, and chemical and crystal profiles were characterized through scanning and transmission electron microscopy, energy-dispersive X-ray analysis, and X-ray diffraction, respectively. The assessed bleaching gels were experimental (without CaPP); 0.5% CaPP; 1.5% CaPP; and commercial. The gels’ pH values and H2O2 concentrations (iodometric titration) were determined. The odontoblast-like cell viability after a gel’s exposure was assessed by the MTT assay. The pH and H2O2 concentration were compared through a repeated-measures analysis of variance (ANOVA) and a Tukey’s test and the cell viability through a one-way ANOVA and a Tukey’s test using a GraphPad Prism (α < 0.05). The CaPP particles were spherical (with Ca and P, 135.7 ± 80.95 nm size) and amorphous. The H2O2 concentration decreased in all groups after mixing (p < 0.001). The 0.5% CaPP resulted in more-stable pH levels and higher viability levels than the experimental one (p < 0.05). The successful incorporation of CaPP had a positive impact on the bleaching gel’s chemical and cellular-viability properties when compared to the experimental gel without these particles.
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Affiliation(s)
| | - Juliana Jarussi dos Santos
- Group of Chemistry of Hybrid and Inorganic Materials (GQMATHI), São Carlos Institute of Chemistry, University of São Paulo (USP), São Carlos 13563-120, Brazil
| | - Jonny Burga Sánchez
- Department of Physiological Science, Piracicaba Dental School, University of Campinas—UNICAMP, Piracicaba 13414-903, Brazil
| | - Ubirajara Pereira Rodrigues-Filho
- Group of Chemistry of Hybrid and Inorganic Materials (GQMATHI), São Carlos Institute of Chemistry, University of São Paulo (USP), São Carlos 13563-120, Brazil
| | - Flávio Henrique Baggio Aguiar
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas—UNICAMP, Piracicaba 13414-903, Brazil
| | - Klaus Rischka
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas—UNICAMP, Piracicaba 13414-903, Brazil
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359 Bremen, Germany
- Correspondence:
| | - Débora Alves Nunes Leite Lima
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas—UNICAMP, Piracicaba 13414-903, Brazil
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Manzoli TM, Costa JLDSG, Besegato JF, Gelio MB, Galvani LD, Bordini EAF, Kuga MC, Dantas AAR. Violet LED associated with high concentration hydrogen peroxide: Effects on bleaching efficacy, pH, and temperature. Photodiagnosis Photodyn Ther 2022; 40:103133. [PMID: 36162757 DOI: 10.1016/j.pdpdt.2022.103133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND This study aimed to evaluate the bleaching efficacy, pH, and temperature of 35% hydrogen peroxide (HP) gel used alone or associated with violet LED. METHODS Sixty bovine crowns were sectioned (5 × 5 × 2mm). After staining with black tea, the specimens were randomized into four groups (n = 10) according to the bleaching protocol: HP35R: 3 × 15 min 35% HP; HP35: 1 × 45 min 35% HP; HP35VR: 3 × 8min 35% HP + Violet LED; HP35V: 1 × 24 min + Violet LED. Two bleaching sessions were performed for all the groups. Color change was evaluated before, 24h after each session, 7 days and 15 days after the last session. The variables ∆E00 [CIEDE2000] and WID were used for color analysis. The pH variation (initial and final) and the temperature of the gel were recorded (n = 5). ANOVA two-way for repeated measures and Bonferroni post-test was used at a significance level of 5%. RESULTS HP35VR and HP35V the most noticeable color change(p < 0.05). The final values of pH were lower than the initial ones, but with no difference between the groups (p > 0.05). Groups HP35VR and HP35V showed an increase in temperature in relation to HP35R (p < 0.05). CONCLUSIONS Violet LED improved the bleaching efficacy of 35% HP in a time-saving manner without negatively affecting the pH and temperature of 35% HP. The renewal of HP did not influence the outcomes.
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Affiliation(s)
- Tatiane Miranda Manzoli
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - Mariana Bena Gelio
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - Lucas David Galvani
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - Ester Alves Ferreira Bordini
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo - USP, Alameda Dr. Octávio Pinheiro Brisolla, 9-75, ZIP Code 17012-901, Bauru, São Paulo, Brazil.
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
| | - Andréa Abi Rached Dantas
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street - 3rd floor, Centro, Mail Box: 331, ZIP Code 14801-903, Araraquara, São Paulo, Brazil.
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Costa JLDSG, Nogueira BR, Batista de Oliveira Junior O, Pretel H. The influence of hydrogen peroxide concentration on the chemical kinetics of photo-accelerated tooth whitening. Photodiagnosis Photodyn Ther 2022; 40:103175. [PMID: 36332894 DOI: 10.1016/j.pdpdt.2022.103175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND The bleaching procedure consists of chemical principles of free radical release that react with chromophores, which results in an amount of energy released in this process. However, the evaluation of the electrical potential generated in these protocols has not yet been thoroughly investigated in the literature. Thus, this study aimed to examine variations in pH, mV, and temperature of different concentrations of hydrogen peroxide in the presence or absence of an intermittent LED/LASER photo acceleration system. METHODS The study was divided into six groups (n = 9) according to the concentration of hydrogen peroxide (6%, 15%, and 35%), associated or not with the photo acceleration system LED/LASER. We followed the variation of pH, mV, and temperature at 1, 5, 10, 15, and 30 min after gel manipulation. Data were evaluated by two-way ANOVA of repeated measures (α =0.05). RESULTS pH, mV, and temperature of the groups showed statistical differences both in the light and bleach and in the interaction between the two factors (p < 0.0001), where pH and mV were more influenced by the bleach and light factor, while the temperature was influenced by the bleach factor associated with light. HP15 presented the most significant change in pH, mV, and temperature. CONCLUSION The use of LED/laser increased the temperature of the gels and altered the pH and mV kinetics of HP6 and HP15, which did not occur in HP35, possibly due to the high ionic potential linked to the concentration.
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Affiliation(s)
- Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, 3rd floor, Humaitá Street, 1680 - Centro, Mail Box: 331, Araraquara, São Paulo 14801-903, Brazil
| | - Básia Rabelo Nogueira
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, 3rd floor, Humaitá Street, 1680 - Centro, Mail Box: 331, Araraquara, São Paulo 14801-903, Brazil
| | - Osmir Batista de Oliveira Junior
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, 3rd floor, Humaitá Street, 1680 - Centro, Mail Box: 331, Araraquara, São Paulo 14801-903, Brazil
| | - Hermes Pretel
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, 3rd floor, Humaitá Street, 1680 - Centro, Mail Box: 331, Araraquara, São Paulo 14801-903, Brazil.
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Costa JLDSG, Besegato JF, Zaniboni JF, Galvani LD, Kuga MC. Effects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties. Photodiagnosis Photodyn Ther 2022; 38:102733. [PMID: 35065278 DOI: 10.1016/j.pdpdt.2022.102733] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/13/2022] [Accepted: 01/18/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND This study evaluated the color change, enamel surface roughness and microhardness after different tooth bleaching protocols, using hydrogen peroxide (HP) and/or violet LED. METHODS Forty bovine specimens (7 × 7 × 2 mm) were randomly distributed into 4 groups: 35% HP, 6% HP, 6% HP + violet LED and violet LED alone. First, the specimens were stained with black tea and then submitted to two bleaching sessions of 30 min with an interval of 7 days. Color change (∆L*, ∆a*, ∆b* and ∆E00) after 24 h of each session and 1 week after the last session was evaluated. Enamel roughness and microhardness were evaluated immediately before the sessions, 24 h and 1 week after the last session. Data were evaluated by ANOVA for repeated measures and Bonferroni post-test or Kruskall-Wallis and Dunn tests (α = 0.05). Representative specimens from each group were analyzed by scanning electron microscopy. RESULTS 6% HP + violet LED and 35% HP showed the highest color change, while violet LED alone had the lowest results. Enamel roughness analyses showed that 6% HP + violet LED and 35% HP showed changes after two bleaching sessions. No differences were observed regarding enamel microhardness. CONCLUSIONS The use of 6% HP + violet LED showed enhanced bleaching efficacy compared to 35% HP. However, violet LED used alone exhibited the lowest color change. 6% HP + violet LED and 35% HP promoted changes on enamel roughness, while no microhardness changes was observed for any group.
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Affiliation(s)
- Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street, 3rd floor - Centro, Mail Box: 331, Araraquara, SP, Zip Code 14801-903, Brazil.
| | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street, 3rd floor - Centro, Mail Box: 331, Araraquara, SP, Zip Code 14801-903, Brazil.
| | - Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street, 3rd floor - Centro, Mail Box: 331, Araraquara, SP, Zip Code 14801-903, Brazil.
| | - Lucas David Galvani
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street, 3rd floor - Centro, Mail Box: 331, Araraquara, SP, Zip Code 14801-903, Brazil.
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 1680 Humaitá Street, 3rd floor - Centro, Mail Box: 331, Araraquara, SP, Zip Code 14801-903, Brazil.
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Abstract
Tooth whitening is one of the most conservative procedures for increasing the aesthetics of patients, but the effect of bleaching on ceramic restorations has not been extensively studied. In this study, the bleaching effect on three dental restoration materials (polished/glazed lithium disilicate glass ceramic, leucite reinforced glass ceramic and zirconium dioxide ceramic) has been investigated in terms of surface roughness changes of the exposed samples. Philips Zoom NiteWhite 16% carbamide peroxide, Philips Zoom 6% hydrogen peroxide with following LED illumination and Pola Office 6% hydrogen peroxide have been used for ceramic bleaching. The experimental investigation and performed statistical analysis revealed that the highest surface roughness changes of all investigated ceramics were caused by the hydrogen peroxide and the lowest by carbamide peroxide. These findings correlated well with the colour changes observed in the same bleached dental ceramic samples indicating potential of carbamide peroxide as the most prospective bleaching agent.
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