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Centenaro GG, Favoreto MW, Cordeiro DCF, Carneiro TDS, Basting RT, Reis A, Loguercio AD. Effect of a brush tip on in-office bleaching gels in an attachable syringe: Hydrogen peroxide penetration, bleaching efficacy and amount of gel expended. J Dent 2024; 148:105239. [PMID: 39019248 DOI: 10.1016/j.jdent.2024.105239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/02/2024] [Accepted: 07/12/2024] [Indexed: 07/19/2024] Open
Abstract
OBJECTIVE Evaluate the penetration of hydrogen peroxide (HP) into the pulp chamber, bleaching efficacy (BE) and amount of gel expended during in-office bleaching using an applicator brush tip and conventional tip from different commercial brands. MATERIALS AND METHODS 104 human premolars were randomly distributed into thirteen groups (n = 8) according to the commercial brand: DSP White Clinic 35 % Calcium (DW), Nano White 35 % (NW), Total Blanc One-Step 35 % (TS), Whiteness HP Blue 35 % (WB), Potenza Bianco Pro SS 38 % (PB), Opalescence XTra Boost 40 % (OB), no bleaching (negative control), and application method: applicator brush tip and conventional tip for all groups. Initial HP concentration (%) was determined via titration and pH was measured with digital pH meter. Concentration (µg/mL) of HP into the pulp chamber was measured using UV-Vis spectrophotometry, the BE (ΔE*ab, ΔE00 and ΔWID) was evaluated with a digital spectrophotometer, and the amount of gel expended was evaluated using a precision analytical digital balance. Statistical analysis included two-way ANOVA, Tukey's, and Dunnett's test. Comparison between HP into the pulp chamber vs BE was performed with Person's correlation (α = 0.05). RESULTS Brush tip demonstrated a low amount of HP in the pulp chamber compared to the conventional method for all bleaching gels (p < 0.0003), as well as lower amount of gel expended (p < 0.002). The brush tip did not result in a significant difference in BE compared to the conventional (p > 0.05). No correlations were found between both factors (p > 0.05). CONCLUSION Brush tip showed lower penetration of HP in the pulp chamber and a reduced volume of spent gel when compared to the conventional tip, for all commercial brands. CLINICAL RELEVANCE Brush tip is recommended for bleaching gels in an attachable syringe due to its ability to reduce the penetration of HP into the pulp chamber and minimize the amount of bleaching gel used.
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Affiliation(s)
- Gabrielle Gomes Centenaro
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Michael Willian Favoreto
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas, Ponta Grossa, Paraná, Brazil; School of Dentistry, Tuiuti University of Parana, Curitiba, Paraná, Brazil
| | | | - Taynara de Souza Carneiro
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas, Ponta Grossa, Paraná, Brazil; Health Sciences Faculty, IDIBO research group, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Roberta Tarkany Basting
- Department of Restorative Dentistry, Faculdade São Leopoldo Mandic, Campinas, São Paulo, Brazil
| | - Alessandra Reis
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas, Ponta Grossa, Paraná, Brazil.
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Centenaro GG, Favoreto MW, Cordeiro DCF, Gumy FN, Machado AG, Cochinski GD, Reis A, Loguercio AD. Effect of the type of application tip for 35% hydrogen peroxide on bleaching efficacy and tooth sensitivity: A randomized clinical trial. J ESTHET RESTOR DENT 2024; 36:1029-1037. [PMID: 38475979 DOI: 10.1111/jerd.13219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024]
Abstract
OBJECTIVES Evaluate the bleaching efficacy (BE) and tooth sensitivity (TS) of in-office bleaching using different application tips. METHODS Forty-eight participants were selected (split-mouth), one to receive bleaching with an attached brush tip and one with a conventional tip. The procedure was performed with Whiteness Automixx Plus 35%. The BE was evaluated at the beginning, weekly, one and 12 months post-bleaching with a Vita Easyshade spectrophotometer (ΔE*ab, ΔE00, and WID) and with Vita classical A1-D4 and Vita Bleachedguide shade guides units (ΔSGU). Absolute risk and intensity of TS were recorded using the Visual Analogue Scale. The equivalence of BE was analyzed using the two one-sided t-tests for paired samples. The absolute risk of TS was evaluated using the McNemar test, and the TS intensity was measured with the paired t test (α = 0.05). RESULTS The equivalence of BE was observed for both groups in all color evaluations (p > 0.05). A lower absolute risk and intensity of TS were observed for the attached brush tip when compared with the conventional tip (p < 0.003 and p < 0.0001). CONCLUSION Using an attached brush tip showed the same BE as a conventional tip. However, for the attached brush tip, there was a reduction in TS. CLINICAL SIGNIFICANCE The applicator-attached brush tip is recommended for in-office dental bleaching, because of the possible reduction in risk and intensity of TS.
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Affiliation(s)
- Gabrielle G Centenaro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Michael W Favoreto
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Deisy C F Cordeiro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Fernanda N Gumy
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Amanda G Machado
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Gabriel D Cochinski
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Alessandra Reis
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
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Cordeiro DCF, Favoreto MW, Centenaro GG, Gumy FN, Loguercio AD, Borges CPF, Reis A. At-home bleaching with carbamide peroxide with concentrations below 10%: bleaching efficacy and permeability in the pulp chamber. Clin Oral Investig 2024; 28:224. [PMID: 38509406 DOI: 10.1007/s00784-024-05604-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/06/2024] [Indexed: 03/22/2024]
Abstract
OBJECTIVES To evaluate the bleaching efficacy and permeability of hydrogen peroxide (HP) in the pulp chamber of human teeth bleached with lower concentrations of carbamide peroxide gel (4%, 5% and 7% CP). MATERIALS AND METHODS Bleaching gels with lower concentrations were formulated and a commercial standard gel, 10% CP, was used as a reference. Fifty-six human premolars were randomly divided into four groups. Applications of the bleaching gel were made for 3 h for 21 days. The bleaching efficacy was evaluated by digital spectrophotometry on 1, 7, 14 and 21 days, with analysis in the ∆Eab, ∆E00 and WID color spaces. The concentration of HP in the pulp chamber was measured in the same periods by UV-Vis spectrophotometry (µg/mL). Two-way repeated analysis of variance (ANOVA) examined bleaching efficacy and HP permeability, followed by Tukey's post-hoc test (α = 0.05). RESULTS All groups showed significant color changes, with no statistical differences after the second and third week of bleaching (p > 0.05). The 'time' factor was statistically different (p < 0.05), increasing the bleaching efficacy throughout the treatment. The 4% CP group had lower HP levels in the pulp chamber (p < 0.05). CONCLUSIONS The results seem promising, revealing that low concentration gels are as effective as 10% CP with the benefit of reducing the amount of HP in the pulp chamber. CLINICAL RELEVANCE Low concentration 4% PC and 5% PC maintains bleaching efficacy, reduces the penetration of HP peroxide into the pulp chamber, and may reduce tooth sensitivity.
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Affiliation(s)
- Deisy Cristina Ferreira Cordeiro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Michael Willian Favoreto
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Gabrielle Gomes Centenaro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Fernanda Novak Gumy
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | | | - Alessandra Reis
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
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Favoreto MW, Parreiras SO, Wendlinger M, Carneiro TDS, Lenhani MI, Borges CPF, Reis A, Loguercio AD. Evaluation of hydrogen peroxide permeability, color change, and physical-chemical properties on the in-office dental bleaching with different mixing tip. J ESTHET RESTOR DENT 2024; 36:460-468. [PMID: 37728145 DOI: 10.1111/jerd.13134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 09/21/2023]
Abstract
OBJECTIVE This study aims to assess hydrogen peroxide (HP) penetration into the pulp chamber, color change (CC), physical-chemical properties, and material wastage (MW) and material used (MU) in mixing tips when using in-office bleaching gels with two different mixing tips. MATERIALS AND METHODS Forty teeth were divided into five groups (n = 8) based on the bleaching gels used (Pola Office +37.5% [PO+] and Whiteness HP Automixx Plus 35% [AM+]) and the mixing tip types (T-Mixer and Helical). A negative control group was treated with ultra-purified water. HP concentration was measured using UV-Vis, and CC was evaluated with a digital spectrophotometer. Initial concentration, pH, and viscosity were measured through Titration, a Digital pH meter, and Rheometer, respectively. MW and MU were measured using a precise analytical balance. Statistical analysis included two-way ANOVA, Tukey's, and Dunnett's test (α = 0.05). RESULTS A higher HP concentration was observed with PO+ with the Helical mixing tip in comparison with AM+ (p = 0.01). No significant differences in CC or MU were found for different mixing tips (p = 0.001). The T-mixer mixing tip resulted in significantly less MW (p < 0.00001) and improved mixture homogeneity and viscosity. CONCLUSIONS Utilizing a T-mixer with self-mixing bleaching gels achieves comparable CC while reducing MW. Moreover, it decreases HP penetration when using PO+. CLINICAL SIGNIFICANCE For the application of a self-mixing in-office bleaching gel, a T-mixer mixing tip should be recommended, as it reduces the penetration of hydrogen peroxide into the pulp chamber when using PO+, while also minimizing gel wastage.
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Affiliation(s)
| | - Sibelli Olivieri Parreiras
- Department of Restorative Dentistry, Universidad Autónoma de Baja California, Mexicali, Baja California, Mexico
| | - Michel Wendlinger
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Taynara De Souza Carneiro
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Madrid, Spain
| | - Mariah Ignez Lenhani
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | | | - Alessandra Reis
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
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Vardasca IS, Favoreto MW, de Araujo Regis M, de Souza Carneiro T, Hul EA, Borges CPF, Reis A, Loguercio AD, Francci C. Low and high hydrogen peroxide concentrations of in-office dental bleaching associated with violet light: an in vitro study. Clin Oral Investig 2024; 28:171. [PMID: 38400920 DOI: 10.1007/s00784-024-05549-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/07/2024] [Indexed: 02/26/2024]
Abstract
OBJECTIVES This study aims to assess hydrogen peroxide (HP) penetration within the pulp chamber, color change (CC), physical-chemical properties, and temperature using in-office different concentration bleaching gels with or without violet light. MATERIALS AND METHODS Fifty teeth were divided into five groups (n = 10) based on the HP concentration bleaching gels used (6% and 35%) and the used violet light (with or without). HP penetration within the pulp chamber was measured using UV-Vis. The CC was evaluated with a digital spectrophotometer. Initial and final concentration, and pH were measured through titration, and a Digital pHmeter, respectively. Temperature analyses were measured through a thermocouple. Statistical analysis included two-way ANOVA, Tukey's, and Dunnett's test (α = 0.05). RESULTS The presence of violet light did not affect the amount of HP within the pulp chamber, or the CC (p > 0.05). Greater penetration of HP was observed within the pulp chamber, as well as CC when using 35% HP (p < 0.05). The final concentration of both gels was lower than the initial concentration, regardless of the use of violet light (p < 0.05). The initial and final pH levels remained neutral and stable (p > 0.05). The pulp temperature increased when the gels were used in conjunction with violet light (p < 0.05). CONCLUSIONS Using violet light in conjunction with 6% or 35% HP does not alter the physical properties of the bleaching agents, the penetration of HP or enhance color change. However, an increase in temperature was observed when violet light was applied associated with bleaching gels. CLINICAL RELEVANCE While the simultaneous use of violet light with hydrogen peroxide 6% or 35% does not alter the material's properties, it also does not bring benefits in reducing hydrogen peroxide penetration and improving color change. Furthermore, the use of violet light increases pulp temperature.
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Affiliation(s)
| | - Michael Willian Favoreto
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | | | - Taynara de Souza Carneiro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Madrid, Spain
| | - Emanuel Adriano Hul
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | | | - Alessandra Reis
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
| | - Carlos Francci
- Department of Dental Materials, University of Sao Paulo, Sao Paulo, Brazil
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Carneiro TS, Favoreto MW, Mena-Serrano A, Wendlinger M, Forville H, Reis A, Ceballos L, Loguercio AD. In vitro evaluation of the effect of different bleaching varnishes: Hydrogen peroxide penetration into the pulp chamber and color change. J ESTHET RESTOR DENT 2024; 36:402-409. [PMID: 37681984 DOI: 10.1111/jerd.13133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 09/09/2023]
Abstract
OBJECTIVE To evaluate the penetration of hydrogen peroxide (HP) into the pulp chamber and the color change of different bleaching varnishes in low concentrations used for at-home bleaching. MATERIALS AND METHODS Ninety healthy premolars were used, randomly distributed into nine groups (n = 10) according to bleaching varnish (PL, PolaLuminate; VS, VivaStyle Paint On Plus; CA, Cavex Bite&White whitening pen and; AW AlignerWhite) and time (10 and 30 min), and a control group (no bleaching). The penetration of HP was evaluated by UV-Vis spectroscopy. To evaluate the color change (ΔEab , ΔE00 , ΔWID ) a digital spectrophotometer was used (α = 0.05). RESULTS The AW group in 10 min and the control group showed similar and lower HP penetration in the pulp chamber when compared to the other groups (p = 0.003). Increasing the application time to 30 minutes elevated the amount of HP inside the pulp chamber for all groups (p = 0.003), except for PL (p > 0.05). When applied for 30 min all bleaching varnishes showed higher color change (ΔWID ) when compared to 10 min (p = 0.04). CONCLUSIONS For all bleaching varnishes evaluated, PolaLuminate applied for 30 min showed lower penetration into the pulp chamber and higher bleaching effects. CLINICAL SIGNIFICANCE The use of bleaching varnishes seems promising for teeth bleaching, but it varies according to user product and protocol.
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Affiliation(s)
- Taynara S Carneiro
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
- Area of Stomatology, IDIBO research group, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Michael W Favoreto
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | | | - Michel Wendlinger
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Heloisa Forville
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Alessandra Reis
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Laura Ceballos
- Area of Stomatology, IDIBO research group, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, PR, Brazil
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Carneiro TDS, Favoreto MW, Ferreira MWC, Bernardi LG, Andrade HFD, Bandeca MC, Reis A, Ceballos García L, Loguercio AD. In-office dental bleaching in adolescents using 6% hydrogen peroxide with different application tips: randomized clinical trial. J Appl Oral Sci 2023; 31:e20230216. [PMID: 37909527 PMCID: PMC10609651 DOI: 10.1590/1678-7757-2023-0216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/29/2023] [Accepted: 09/12/2023] [Indexed: 11/03/2023] Open
Abstract
OBJECTIVE Despite the availability of in-office bleaching gels with a 6% concentration of hydrogen peroxide (HP), these gels have not been evaluated in younger patients. They are commercially available with a tip, associated or not with a brush, where the tip with a brush spreads the gel over the entire surface to have a smaller thickness (thin layer) since the manufacturers indicate the application of a thin layer of gel. This randomized, split-mouth, double-blind clinical trial evaluated the efficacy of in-office bleaching with 6% HP in adolescents using different application tips, as well tooth sensitivity (TS) and aesthetic self-perception. METHODOLOGY Sixty participants were randomized for 6% HP self-mixing bleaching gel tip design: without brush and with brush. In-office bleaching was performed in 3 sessions of 50 minutes. Color change was evaluated using a digital spectrophotometer (ΔE ab , ΔE 00 , and ΔWI D ) and color guide (ΔSGU), the absolute risk and intensity of TS with a visual analogue scale and aesthetic self-perception with the oral aesthetic scale (a=0.05). RESULTS The groups achieved similar bleaching regardless of the application tip (p>0.05). However, only for ΔWI D , a significant mean difference (MD) was observed in the third week (MD 2.3; 95% CI 1.2 to 3.3; p < 0.001) and at one month (MD 1.6; 95% CI 0.6 to 2.6; p < 0.03) favoring the tip without brush. Regarding TS, 45% in the tip-without-brush group and 33% in the tip-with-brush group reported TS (odds ratio 0.61; 95% CI 0.29 to 1.28; p<0.02), with low TS intensity (MD 0.05; 95% CI -0.06 to 0.17; p>0.36). All patients reported improved aesthetic self-perception after bleaching (MD -1.3; 95% -1.8 to -0.9; p<0.001). CONCLUSIONS Regardless of the tip used bleaching with 6% HP achieved a bleaching efficacy and improved the aesthetic self-perception. However, a lower risk of TS for application using the tip with brush was observed.
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Affiliation(s)
- Taynara de Souza Carneiro
- Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil
- Universidad Rey Juan Carlos , Facultad de Ciencias de la Salud , IDIBO, Madrid , España
| | - Michael Willian Favoreto
- Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil
| | | | - Laís Giacomini Bernardi
- Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil
| | | | - Matheus Coelho Bandeca
- Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil
| | - Alessandra Reis
- Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil
| | - Laura Ceballos García
- Universidad Rey Juan Carlos , Facultad de Ciencias de la Salud , IDIBO, Madrid , España
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da Silva KL, Favoreto MW, Centenaro GG, Bernardi LG, Borges CPF, Reis A, Loguercio AD. Can all highly concentrated in-office bleaching gels be used as a single-application? Clin Oral Investig 2023; 27:3663-3671. [PMID: 37017758 DOI: 10.1007/s00784-023-04980-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 03/24/2023] [Indexed: 04/06/2023]
Abstract
OBJECTIVE This in vitro study aims to evaluate of hydrogen peroxide (HP) diffusion into the pulp chamber, bleaching efficacy (BE), and pH stability (pH) of single-application high concentrated in-office bleaching gels. MATERIALS AND METHODS Eighty-eight healthy premolars were randomly into eleven groups (n = 8) according to the in-office dental bleaching: DSP White Clinic 35% calcium (DW), Nano White 35% (NW), Opalescence XTra Boost 40% (OB), Pola Office + 37.5% (PO), Potenza Bianco Pro SS 38% (PB), Total Blanc 35% (TB), Total Blanc One-Step 35% (TO), Whiteness Automixx 35% (WA), Whiteness Automixx Plus 35% (WP), and Whiteness HP Blue 35% (WB). A group not exposed to bleaching agents was the control group (CG). All bleaching agents were applied in one session with a single application. After the bleaching procedure, the concentration of HP diffusion (μg/mL) into the pulp chamber was assessed using UV-Vis spectrophotometry. The BE (ΔEab and ΔE00) was evaluated before and 1 week after the bleaching procedure using a digital spectrophotometer. The pH of each bleaching gel was evaluated by digital pHmeter. The one-way ANOVA and Tukey's was used for a statistical analysis (α = 0.05). RESULTS The concentration of HP diffusion into the pulp chamber was higher in all in-office bleaching gels when compared to CG (p < 0.0000001). However, there are a significant difference between them (p = 0.0001). A significant BE was observed in all in-office bleaching gels (p < 0.0001 for ΔEab and ΔE00), with a significant difference between them (p < 0.0001). PO, OB, TB, WP, and WB showed a higher BE when compared to DW, PB, and WA (p < 0.0001). Most bleaching gels were slightly acidic or alkaline during the total application time, while DW, PB, TB, and WA showed a high acidic behavior after 30 min of application. CONCLUSIONS A single application was able to produce a bleaching efficacy. However, usually, gels with slightly acidic or alkaline pH during the application time reduces the HP diffusion into the pulp chamber. CLINICAL RELEVANCE The single-application of bleaching gels with slightly acidic or alkaline and stable pH decreased the penetration of hydrogen peroxide into the pulp chamber in in-office bleaching and maintained the bleaching efficacy.
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Affiliation(s)
- Karine Letícia da Silva
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Michael Willian Favoreto
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Gabrielle Gomes Centenaro
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Laís Giacomini Bernardi
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | | | - Alessandra Reis
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
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9
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Vochikovski L, Favoreto MW, Rezende M, Terra RMO, Gumy FN, Loguercio AD, Reis A. Use of infrared photobiomodulation with low-level laser therapy for reduction of bleaching-induced tooth sensitivity after in-office bleaching: a double-blind, randomized controlled trial. Lasers Med Sci 2022; 38:18. [PMID: 36562868 PMCID: PMC9782280 DOI: 10.1007/s10103-022-03682-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022]
Abstract
The purpose of this study is to evaluate the use of infrared photobiomodulation with low-level laser therapy (PBM) to reduce bleaching-induced tooth sensitivity (TS) after in-office bleaching. Eighty-three participants were randomized in blocks into two groups. In the experimental group, the patients received an application after each session of in-office bleaching (35% hydrogen peroxide, 1 × 50 min; 2 sessions with 1-week interval), while the laser application was simulated in the control group. The PBM system was operated in continuous mode, using 3 J of energy. A dose of 100 J/cm2 was applied for 30 s with 808 nm (100 mW of power) in the middle third of the crown. The risk and intensity of TS were recorded immediately after bleaching, 1 h, 24 h, and 48 h after each bleaching session, with a visual scale analog (0-10) and a five-point numerical scale (0-4). The color was recorded at the beginning, weekly, and 1 month after the end of the bleaching (VITA Classical, VITA Bleachedguide, and digital spectrophotometer). The risk of TS was 98% (95% CI 88 to 99%) for the laser group and 95% (95% CI 83 to 99%) for the control (RR = 1.03; 95% CI 0.94 to 1.12; p = 1.0). Similarly, no difference in the intensity of TS was detected for both pain scales (p > 0.65). Improvement in color change, regardless of the group, was observed (p > 0.15). The application of an PBM did not reduce the risk and intensity of TS when applied after the procedure using the parameters recommended by the manufacturer.Trial registration number and date of registration: RBR-4HCVSG-04/06/2019.
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Affiliation(s)
- Laína Vochikovski
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil
| | - Michael W Favoreto
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil
| | - Marcia Rezende
- Department of Dentistry, Paulo Picanço School of Dentistry, Ceará, Fortaleza, Brazil
| | - Renata M O Terra
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil
| | - Fernanda N Gumy
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil.
| | - Alessandra Reis
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Paraná, Ponta Grossa, Brazil
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