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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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Gonçalves IMC, da Silva JA, Aguiar FHB, Lima DANL. Development of toothpaste formulations containing mineral clays as abrasive agents and their effects on the physical properties of dental enamel. J ESTHET RESTOR DENT 2024; 36:901-910. [PMID: 38348937 DOI: 10.1111/jerd.13208] [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: 01/29/2024] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 05/08/2024]
Abstract
To assess the physical properties and topographical aspect of dental enamel's surface microhardness (KHN), surface roughness (Ra), and color parameters CIELAB (∆Eab*), CIEDE 2000 (∆E00), and whiteness index for dentistry (∆WID) after toothbrushing with experimental toothpaste formulations with the following mineral clay types: kaolin, Sparclay SGY, and Tersil CGY used as abrasive component. Scanning electron microscopy (SEM) was performed for topographical analyses purposes. A total of 96 bovine incisors were used in the experiment. They were divided into eight experimental groups (n = 12), namely: NC-negative control (no treatment), CT12-Colgate Total 12®, CMP-Colgate® Máxima Proteção Anticáries, K-kaolin experimental toothpaste, SGY-Sparclay SGY experimental toothpaste; CGY-Tersil CGY experimental toothpaste, SD-SiO2 experimental toothpaste, and CC-CaCO3 experimental toothpaste. All samples were subjected to mechanical brushing protocol with 5000 cycles and kept in artificial saliva with daily exchanges. KHN was analyzed through the mixed linear model for repeated measures over time. Ra was analyzed through nonparametric Kruskal Wallis and Dunn tests to compare the groups. Paired Wilcoxon test was run to compare experimental times. ∆WID, ∆Eab*, and ∆E00 were analyzed through Kruskal Wallis and Dunn tests. All analyses were performed in R* software, at 5% significance level. EXP_SGY recorded higher KHN than EXP_SiO2 and EXP_CaCO3, whereas EXP_K showed increased Ra in comparison to CMP (p = 0.0229). ∆Eab and ∆E00 were significantly higher in the CT12, EXP_SiO2, and EXP_CaCO3 groups than in the NC and EXP_K (p < 0.0001). There were no significant changes in ∆WID (p = 0.0852). According to SEM results, toothbrushing with experimental toothpastes added with mineral clay types did not have significant impact on enamel's polishing and smoothness. CLINICAL RELEVANCE: Mineral clays have a broad application in the cosmetic industry, and recently, they have been used in the formulation of vegan toothpaste.
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Affiliation(s)
- Iana Maria Costa Gonçalves
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, SP, Brazil
| | - Julliana Andrade da Silva
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, SP, Brazil
| | - Flávio Henrique Baggio Aguiar
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, SP, Brazil
| | - Débora Alves Nunes Leite Lima
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, SP, Brazil
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Chen S, Zhu J, Yu M, Jin C, Huang C. Effect of aging and bleaching on the color stability and surface roughness of a recently introduced single-shade composite resin. J Dent 2024; 143:104917. [PMID: 38431188 DOI: 10.1016/j.jdent.2024.104917] [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: 01/23/2024] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVES To assess the effects of aging and bleaching procedures on the color stability and surface roughness of a new single-shade composite versus multi-shade composite resins. METHODS A single-shade composite resin (Charisma Diamond One, CDO) and 3 multi-shade composite resins (Tetric NCeram, Filtek Z350 XT, Clearfil Majesty Posterior) were tested. Thirty specimens of each material were subjected to one of the aging procedures respectively: immersion in distilled water (12 days/37 °C), immersion in coffee (12 days/37 °C), or water thermocycling (10,000 cycles/5-55 °C). All specimens underwent in-office bleaching after aging. Kruskal-Wallis tests and analysis of variance were used for statistical analysis (α=0.05). RESULTS All materials exhibited a change of color (ΔE00), translucency (RTP), whiteness (WID) and surface roughness parameters (Sa,Sv) after aging and bleaching procedures. CDO showed the highest ΔE00 among all resins with the highest RTP value, regardless of the aging procedures. Immersion in coffee led to the significantly highest ∆E00 values and lowest RTP values for nearly all resins. Positive ΔWID1 (WID(bleaching)-WID(baseline)) values were found in distilled water immersion and thermocycling groups, while negative ΔWID1 values were found in the coffee immersion group for all materials. Besides, positive ΔWID2 (WID(bleaching)-WID(aging)) values were found in all aging groups for nearly all materials. All materials showed an increasing trend in Sa and Sv after bleaching. CONCLUSIONS CDO showed more pronounced discoloration than multi-shade composite resins. Although the whiteness of all resins increased after bleaching, none was completely restored in the coffee immersion group. Bleaching significantly increased the surface roughness of all materials. CLINICAL SIGNIFICANCE Charisma Diamond One is more susceptible to discoloration, which may affect its long-term success rate. Bleaching could partially reduce the color change of the composite resins but did not return them completely to their original state. The roughness of the resins increased after bleaching, prompting dentists to repolish them after bleaching.
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Affiliation(s)
- Siyang Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Jiakang Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Miaoyang Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Chunxiao Jin
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Cui Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China.
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Erturk-Avunduk AT, Delikan E, Cengiz-Yanardag E, Karakaya I. Effect of whitening concepts on surface roughness and optical characteristics of resin-based composites: An AFM study. Microsc Res Tech 2024; 87:214-228. [PMID: 37724605 DOI: 10.1002/jemt.24424] [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: 05/02/2023] [Revised: 08/30/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023]
Abstract
The aim of this study was to evaluate the effects of various whitening agents on the surface roughness and optical characteristics of different types of resin composite restorations. Fifty specimens were prepared for each resin [G-aenial Posterior (GP), SonicFill-2 (SF), Solidex (SDX), and Nova Compo HF (NC)]. Following baseline color and surface roughness (Ra) measurements, the specimens were randomly divided into 5 groups (n = 10/group) according to whitening concepts: control (distilled water), in-office bleaching [OB-(Opalescence Boost)], at-home bleaching [HB-(Opalescence PF)], whitening toothpaste [WT-(Signal White Now)], and whitening mouthwash [WM-(Listerine Advanced White)]. ∆E00 , ∆TP00 , and ∆WID values were calculated before and after the whitening procedure with a spectrophotometer using the CIEDE2000 formula. Surface roughness measurements were repeated. The surface topography was determined using atomic force microscopy. Two- and three-way analyses of variance and Tukey's post-hoc test were performed, with p < 0.05 regarded as indicative of significance. No significant differences were detected among the resin composite materials in terms of the ΔE00 values (p > 0.05). Color change of all resin materials was above the AT threshold (>1.8) and the PT threshold (>0.8). All restorative materials presented acceptable (AT<2.62) TP00 values. Solidex specimens demonstrated the lowest WID values compared to the other composites. There were significant differences among the whitening procedures with respect to ΔE00 , ΔTP00 , and WID values (p < 0.001). SF/WT combination showed the highest and clinically unacceptable ΔE00 values. The highest roughness values were observed in the SDX specimens and the combination of SDX/OB. The effect of whitening agents on the optical characteristics and surface roughness of restorative materials depends on the type of material, agent, and time. RESEARCH HIGHLIGHTS: Clinicians should be aware that long-term use of over-the-counter products due to the abrasive effects of their ingredients and repeated bleaching session applications may affect the color stability and surface roughness of resin composites.
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Affiliation(s)
| | - Ebru Delikan
- Department of Pediatric Dentistry, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey
| | - Esra Cengiz-Yanardag
- Department of Restorative Dentistry, Faculty of Dentistry, Mersin University, Mersin, Turkey
| | - Izgen Karakaya
- Department of Restorative Dentistry, Faculty of Dentistry, European University of Lefke, Mersin10, Turkey
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Forabosco E, Consolo U, Mazzitelli C, Kaleci S, Generali L, Checchi V. Effect of bleaching on the color match of single-shade resin composites. J Oral Sci 2023; 65:232-236. [PMID: 37532526 DOI: 10.2334/josnusd.23-0159] [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] [Indexed: 08/04/2023]
Abstract
PURPOSE To evaluate the color match of single-shade resin composites before and after bleaching procedures, through instrumental and visual analyses. METHODS Class V cavities were created on the buccal surfaces of 80 extracted human molars, restored with 4 single-shade composites (Omnichroma; Clearfil Majesty ES-2 Universal; Essentia Universal; Venus Diamond One). A spectrophotometer (VITA Easyshade V) was used to evaluate the tooth/resin color match before (T0), and 24 h (T1) and one week (T2) after dental bleaching (Opalescence Boost PF 40%). Color variations (ΔE00) were calculated and statistically analyzed (P < 0.05). Visual analysis was performed before and after tooth bleaching. RESULTS Spectrophotometric evaluations revealed statistically significant differences between materials at T0, T1, and T2 (P < 0.05). Visual analysis reported excellent and very good grades (0 and 1, respectively), irrespective of the materials and timepoints. CONCLUSION Data seem to indicate that single shade composites are able to shift their color when the surrounding tooth undergoes bleaching effects. Single-shade composites seem to achieve a good color match with the surrounding tooth structure, before and after professional bleaching.
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Affiliation(s)
- Eleonora Forabosco
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia
- Clinical and Experimental Medicine PhD School, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia
| | - Ugo Consolo
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia
| | | | - Shaniko Kaleci
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia
| | - Luigi Generali
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia
| | - Vittorio Checchi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia
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Mawlood AA, Hamasaeed NH. The impact of the diode laser 940 nm photoactivated bleaching on color change of different composite resin restorations. J Adv Pharm Technol Res 2023; 14:155-160. [PMID: 37255881 PMCID: PMC10226697 DOI: 10.4103/japtr.japtr_45_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 06/01/2023] Open
Abstract
The study's main objective was to evaluate as well as compare the impact of diode laser 940 nm and conventional in-office bleaching technique on the color change of different composite resin restorations. A total of ninety composite resin discs (CRDs) were made from Filtek™ Bulk Fill, nanohybrid composite resin Filtek™ Z550 XT Universal Restorative, and flowable composite resin restoration Filtek™ Z350xt Flowable Composite. Group A: (30) CRD for Filtek™ Bulk Fill, group B: (30) CRD for Filtek™ Z550 XT Universal Restorative, and group C: (30) CRD for Filtek™ Z350xt Flowable Composite. A1, B1, and C1: (10 CRD in each group): Control group without bleaching. A2, B2, and C2: 10 CRD in each group bleached with Laser White20 without laser activation. A3, B3, and C3: 10 CRD in each group bleached with Laser White20 and activated by diode laser 940 nm. The color was evaluated using a dental spectrophotometer. One-way ANOVA was utilized for the comparison of the color stability of the CRD. P < 0.05 is regarded as statically significant. Both conventional and diode laser in-office vital tooth bleaching protocols affected the color stability of composite resin restorations. The result demonstrated that bleaching without laser activation produced color change (mean [8.30], standard deviation [SD] (1.95) P [< 0.001]), whereas the bleaching and activation by diode laser produced color change (mean [8.11], SD [1.99], P [< 0.001]). Both types of bleaching protocol affected composite resin restorations' color stability. In all tested materials, color changes after the bleaching protocol were clinically perceptible. The restorations following the bleaching procedure are required to be replaced by clinicians.
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Affiliation(s)
- Amal Alaa Mawlood
- Department of Conservative Dentistry, College of Dentistry, Hawler Medical University, Erbil, Iraq
| | - Niaz H. Hamasaeed
- Department of Conservative Dentistry, College of Dentistry, Hawler Medical University, Erbil, Iraq
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Dursun MN, Ergin E, Tekce AU, Gurgan S. Which whitening toothpaste with different contents is more effective on color and bond strength of enamel? J ESTHET RESTOR DENT 2023; 35:397-405. [PMID: 36173366 DOI: 10.1111/jerd.12968] [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: 02/27/2022] [Revised: 09/05/2022] [Accepted: 09/10/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate the effects of six whitening toothpastes with different whitening ingredients as follows: abrasives, polyphosphates, activated charcoal and hydrogen peroxide on the color, and shear bond strength (SBS) of enamel. MATERIALS AND METHODS Thirty-five extracted human molars were sectioned in mesiodistal direction, providing 70 enamel specimens and randomly divided into seven groups having different whitening ingredients (n = 10). After baseline color measurements, the specimens were brushed three times daily for the 30 s. At the end of 2 weeks, spectrophotometric readings were repeated, and color change parameters were calculated. Then, composite cylinders were built on the enamel surfaces and the specimens were subjected to SBS test. Failure modes were determined under a stereomicroscope (×10). One specimen from each group was examined with scanning electron microscope (SEM). The data were statistically analyzed using Kruskal-Wallis, Wilcoxon signed, one-way-ANOVA (p = 0.05). RESULTS Clinically acceptable color change was observed in all whitening toothpastes. There were no significant differences among the groups for Δa, ΔL, ΔE00 , and ΔWID (p > 0.05). The differences among the groups were not significant regarding SBS and failure mode distributions (p > 0.05). SEM findings were in line with the SBS test and failure mode distribution results. CONCLUSIONS All the tested whitening toothpastes showed similar and clinically acceptable efficacy on the color change of the enamel and led to comparable SBS values. CLINICAL SIGNIFICANCE The tested whitening toothpastes had an acceptable whitening efficacy and did not have a negative effect on the bond strength to the enamel.
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Affiliation(s)
- Meltem Nermin Dursun
- Department of Restorative Dentistry, School of Dentistry, Firat University, Elazığ, Turkey
| | - Esra Ergin
- Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey
| | - Aybuke Uslu Tekce
- Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey
| | - Sevil Gurgan
- Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey
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Color Matching of Universal Shade Resin-Based Composite with Natural Teeth and Its Stability before and after In-Office Bleaching. Int J Biomater 2022; 2022:8420890. [PMID: 36341131 PMCID: PMC9629951 DOI: 10.1155/2022/8420890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 09/06/2022] [Accepted: 09/20/2022] [Indexed: 11/17/2022] Open
Abstract
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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Tanthanuch S, Kukiattrakoon B, Naiyanart C, Promtong T, Yothinwatthanabamrung P, Pumpua S. Effect of Mouthwashes for COVID-19 Prevention on Surface Changes of Resin Composites. Int Dent J 2022:S0020-6539(22)00230-1. [PMID: 36443136 PMCID: PMC9581797 DOI: 10.1016/j.identj.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 10/10/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim of this research was to investigate the effect of various mouthwashes for COVID-19 prevention on surface hardness, roughness, and colour changes of bulk-fill and conventional resin composites and determine the pH and titratable acidity of mouthwashes. METHODS Four hundred eighty specimens were fabricated in cylindrical moulds (10 mm in diameter and 2 mm in thickness). Before immersion, baseline data of surface hardness, roughness, and colour values were recorded. Each product of specimens (Filtek Z350XT, Premise, Filtek One Bulk Fill Restorative, SonicFil 2) were divided into 4 groups for 0.2% povidone iodine, 1% hydrogen peroxide, 0.12% chlorhexidine, and deionised water (serving as a control). The specimens were immersed in mouthwashes for 1 minute and then stored in artificial saliva until 24 hours. This process was repeated for 14 days. After immersion, surface hardness, roughness, and colour values of specimens were measured at 7 and 14 days. The data were statistically analysed by 2-way repeated analysis of variance, Tukey honestly significant difference, and t test (P < .05). RESULTS After immersion, all mouthwashes caused significantly lower surface hardness and greater roughness and colour values (P < .05) on all resin composites tested. CONCLUSIONS Mouthwashes had an effect on all resin composites evaluated leading to a significant decreased surface hardness and an increased roughness and colour values (P < .05).
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Affiliation(s)
| | - Boonlert Kukiattrakoon
- Corresponding author. Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Kanchanavanich Road, Hat Yai, Songkhla 90112, Thailand
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Lee WF, Takahashi H, Huang SY, Zhang JZ, Teng NC, Peng PW. Effects of At-Home and In-Office Bleaching Agents on the Color Recovery of Esthetic CAD-CAM Restorations after Red Wine Immersion. Polymers (Basel) 2022; 14:3891. [PMID: 36146038 PMCID: PMC9503437 DOI: 10.3390/polym14183891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to evaluate the effects of at-home and in-office bleaching agents on esthetic CAD-CAM materials after red wine immersion by measuring their optical properties. Sixty specimens were prepared out of three esthetic CAD-CAM materials: Vita Enamic, Celtra Duo, and Ceresmart (n = 20). All specimens were immersed in a red wine solution, and color measurements were performed. Specimens were randomly divided (n = 10) according to the bleaching procedure (in office, at home), bleaching durations were set to 3 time points, and color measurements were performed. According to the Commission Internationale de l’Eclairage (CIE) L* a* b* parameters, CIEDE2000 color differences (ΔE00), translucency parameters (TP00), and whiteness index values (ΔWID) after wine staining and after bleaching were calculated. Data were analyzed using the Mann−Whitney U-test, the Kruskal−Wallis test, and a two-way analysis of variance (ANOVA) (α = 0.05). ΔE00, ΔTP00, and ΔWID decreased with an increase in bleaching treatment. ΔE00 after the final bleaching treatment of in-office bleaching ranged from 1.7 to 2.0, whereas those of in-office treatment ranged from 0.4 to 1.1. All ΔTP00 and ΔWID after the final treatment were below the 50:50% perceptibility thresholds (ΔTP00 < 0.6, and ΔWID < 0.7). Significant differences in ΔE00, ΔTP00, and ΔWID among esthetic CAD-CAM materials were found between CD and CE. In the present study, color recovery after at-home and in-office bleaching appeared to be material-dependent. In-office bleaching showed more effective recovery comparing to at-home bleaching.
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Affiliation(s)
- Wei-Fang Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Hidekazu Takahashi
- Course for Oral Engineering, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - Shiun-Yi Huang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Jia-Zhen Zhang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Nai-Chia Teng
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Pei-Wen Peng
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
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Vidal ML, Pecho OE, Collares K, Brandeburski S, Bona AD. Color Change of Resin-based Composites After In Vitro Bleaching Protocols: A Systematic Review and Meta-analysis. Oper Dent 2022; 47:149-162. [PMID: 35029690 DOI: 10.2341/20-234-lit] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To systematically review the literature on color stability of resin-based composites (RBC) after in vitro bleaching protocols and to assess the influence of bleaching protocols by meta-regression analysis on RBC color stability, and the association with clinical and experimental characteristics. METHODS The electronic search was conducted in MEDLINE/PubMed, Scopus, and Web of Science databases and included English language studies that evaluated and reported color differences (CIELAB values) of RBC after in vitro bleaching procedures using hydrogen peroxide and/or carbamide peroxide. RESULTS Database search for color change of RBC after bleaching retrieved 1335 eligible papers after removing duplicates. After initial screening, 66 articles were assessed for full-text reading with final inclusion of 23 published papers. A meta-regression analysis showed that storage time (p≤0.01), color measuring device (p≤0.01), and background color (p≤0.01) had influenced on color changes of RBC. The bleaching protocol (bleaching agent and time of application) did not influence on color changes of RBC (p>0.01). CONCLUSIONS There is evidence that RBC change color after bleaching, but the change is not clinically significant.
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Affiliation(s)
- M L Vidal
- Marina Lermenn Vidal, DDS, MS, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil
| | - O E Pecho
- Oscar E. Pecho, DDS, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil
| | - K Collares
- Kauê Collares, DDS, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil
| | - Sbn Brandeburski
- Suzane Boa Nova Brandeburski, DDS, MS, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil
| | - A Della Bona
- *Alvaro Della Bona, DDS, MMedSci, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil
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12
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Almutairi NM, Almotairiy BM, Alodib AA, Aldossari MA, Albabtain MO, Al-Dobaian BS, Marir NT, AlJurayyad MJ, Jeleudan WS, Alasiri MS. Influence of Hydrogen Peroxide on the Color, Opacity, and Fluorescence of Composite Resins: A Systematic Review. ANNALS OF DENTAL SPECIALTY 2022. [DOI: 10.51847/o1tnwk3cco] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Tabatabaian F, Beyabanaki E, Alirezaei P, Epakchi S. Visual and digital tooth shade selection methods, related effective factors and conditions, and their accuracy and precision: A literature review. J ESTHET RESTOR DENT 2021; 33:1084-1104. [PMID: 34498789 DOI: 10.1111/jerd.12816] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/09/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Despite developments of dental shade selection methods, shade selection is still a challenge affecting esthetic outcomes. The purpose of this review was to discuss visual and digital shade taking methods, related effective factors and conditions, and their accuracy and precision to find out the most accurate, precise shade selection method available in dentistry. OVERVIEW The key terms of accuracy, background, ceramic, color, colorimeter, color analysis, color science, color measurement, color measuring instrument, color matching, composite resin, dental/tooth shade guide, digital camera, esthetics, imaging, imaging application/program/ software, intraoral scanner, light source, photography, precision, shade, shade matching/ determination/prediction/reproduction/selection, shade taking device, spectrophotometer, spectrophotometry, tooth color measurement, tooth color/shade, and visual perception were used separately and jointly to detect related English-language articles published between January 1, 1985, and January 1, 2021. Electronic/non-electronic searches of Google Scholar/PubMed/Scopus/Web of Science were accomplished. Consequently, 249 articles were considered. Accordingly, the digital methods show higher accuracy and precision compared to the visual methods while requiring to be enhanced regarding accuracy to achieve ideal shade taking results. CONCLUSIONS Dental spectrophotometers provide the highest overall accuracy and precision among different shade selection methods while needing clinical setting to control related effective factors/conditions and technological improvement to perform optimally. CLINICAL SIGNIFICANCE Different factors can affect the accuracy and precision of tooth shade selection methods and devices. The understanding of these effective factors may lead to a standard shade taking protocol using accurate, precise methods and devices.
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Affiliation(s)
- Farhad Tabatabaian
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elaheh Beyabanaki
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parisa Alirezaei
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saied Epakchi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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14
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Peng PW, Huang CF, Hsu CY, Chen A, Ng HH, Cheng MS, Tsay S, Lai JY, Yang TS, Lee WF. Color Stability and Staining Susceptibility of Direct Resin-Based Composites after Light-Activated In-Office Bleaching. Polymers (Basel) 2021; 13:polym13172941. [PMID: 34502981 PMCID: PMC8433739 DOI: 10.3390/polym13172941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 11/16/2022] Open
Abstract
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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Affiliation(s)
- Pei-Wen Peng
- School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan; (P.-W.P.); (C.-F.H.)
| | - Chiung-Fang Huang
- School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan; (P.-W.P.); (C.-F.H.)
- Division of Family and Operative Dentistry, Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Ching-Ying Hsu
- Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan;
| | - Ann Chen
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan; (A.C.); (H.-H.N.); (M.-S.C.); (S.T.); (J.-Y.L.)
| | - Ho-Him Ng
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan; (A.C.); (H.-H.N.); (M.-S.C.); (S.T.); (J.-Y.L.)
| | - Man-Si Cheng
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan; (A.C.); (H.-H.N.); (M.-S.C.); (S.T.); (J.-Y.L.)
| | - Shiang Tsay
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan; (A.C.); (H.-H.N.); (M.-S.C.); (S.T.); (J.-Y.L.)
| | - Jia-Yi Lai
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan; (A.C.); (H.-H.N.); (M.-S.C.); (S.T.); (J.-Y.L.)
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (T.-S.Y.); (W.-F.L.)
| | - Wei-Fang Lee
- School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan; (P.-W.P.); (C.-F.H.)
- Correspondence: (T.-S.Y.); (W.-F.L.)
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15
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Savic-Stankovic T, Karadzic B, Komlenic V, Stasic J, Petrovic V, Ilic J, Miletic V. Effects of whitening gels on color and surface properties of a microhybrid and nanohybrid composite. Dent Mater J 2021; 40:1380-1387. [PMID: 34305050 DOI: 10.4012/dmj.2021-030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to compare color changes, surface roughness and gloss of a microhybrid and nanohybrid composite whitened in a simulated in-office or at-home procedure using 40% hydrogen peroxide or 16% carbamide peroxide, respectively. CIELab coordinates were measured before, during and after treatment using VITA EasyShade V (VITA) and ∆E00 calculated. Surface roughness was measured using a surface roughness tester (SJ210; Mitutoyo). Gloss was measured using a gloss checker (IG-331; Horiba). At-home whitening resulted in ∆E00 of 1.23±0.49 (microhybrid) and 1.01±0.76 (nanohybrid). In-office exposure resulted in ∆E00 of 0.69±0.38 (microhybrid) and 0.72±0.50 (nanohybrid). There were no significant differences in ∆E00, surface roughness and gloss between whitening protocols (p>0.05). Color changes of a microhybrid and nanohybrid composite following simulated in-office or at-home whitening reached CIEDE2000 50:50% perceptibility but not acceptability threshold. Surface roughness and gloss of the microhybrid and nanohybrid composite were not affected by whitening.
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Affiliation(s)
- Tatjana Savic-Stankovic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Branislav Karadzic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Vojislav Komlenic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Jovana Stasic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Violeta Petrovic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Jugoslav Ilic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade
| | - Vesna Miletic
- Sydney Dental School, Faculty of Medicine and Health, The University of Sydney
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16
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Medeiros JA, Pecho OE, Pérez MM, Carrillo-Pérez F, Herrera LJ, Della Bona A. Influence of background color on color perception in dentistry. J Dent 2021; 108:103640. [PMID: 33757865 DOI: 10.1016/j.jdent.2021.103640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/15/2021] [Accepted: 03/18/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate the influence of neutral color backgrounds on the perception of color differences in dentistry. METHODS A software was developed for this study that calculated the perceptibility (PT) and acceptability (AT) thresholds of color differences between a pair of computer-simulated incisor samples (n = 60 pairs) over three neutral color (white, gray and black) backgrounds. CIELAB and CIEDE2000 color difference formulas were used. Five groups of volunteer observers (N = 100) participated in the psychophysical experiment (n = 20): Dentists; Dental students; Dental auxiliaries; Dental technicians; and Laypersons. The psychophysical experiment was performed in a dark environment on a calibrated high-resolution screen. To determine PT and AT values, the 60 pairs of samples were randomly presented to each observer over the different backgrounds. The data were adjusted (TSK Fuzzy) and analyzed statistically using Student t-test and ANOVA (α = 0.05). RESULTS Regardless of the metric and the background used, the PT values showed no difference among different observers (p > 0.05). Dentists showed the lowest PT values. Dental technicians showed the lowest AT (p ≤ 0.05) and similar values for the three backgrounds (p > 0.05), regardless of the metric used. The other groups of observers showed the lowest and the highest AT values when using black and white backgrounds, respectively (p ≤ 0.05). CONCLUSIONS The lowest AT values using a black background indicates that the use of this background allows for the evaluation of slight color differences, and should be used for challenging color differences in esthetic dentistry. This study showed the influence of the observer experience on color evaluation in dentistry. CLINICAL SIGNIFICANCE There was no influence of the background color on the perceptibility threshold. However, dentists and dental technicians showed greater ability to perceive slight color differences compared to other groups of observers.
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Affiliation(s)
- Juliana A Medeiros
- Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, Passo Fundo, Brazil
| | - Oscar E Pecho
- Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, Passo Fundo, Brazil
| | - María M Pérez
- Department of Optics, Faculty of Science, University of Granada, Campus Fuente Nueva, Edificio Mecenas, s/n 18071, Granada, Spain
| | - Francisco Carrillo-Pérez
- Department of Computer Architecture and Computer Technology, E.T.S.I.I.T., University of Granada, s/n 18071, Granada, Spain
| | - Luis Javier Herrera
- Department of Computer Architecture and Computer Technology, E.T.S.I.I.T., University of Granada, s/n 18071, Granada, Spain
| | - Alvaro Della Bona
- Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, Passo Fundo, Brazil.
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17
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Pérez MM, Della Bona A, Carrillo-Pérez F, Dudea D, Pecho OE, Herrera LJ. Does background color influence visual thresholds? J Dent 2020; 102:103475. [DOI: 10.1016/j.jdent.2020.103475] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 10/23/2022] Open
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18
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Influence of the photoactivation distance on the color and whiteness stability of resin-based composite after bleaching and aging. J Dent 2020; 99:103408. [DOI: 10.1016/j.jdent.2020.103408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 06/01/2020] [Accepted: 06/07/2020] [Indexed: 11/24/2022] Open
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19
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Costacurta AO, Borges CEP, Centenaro C, Correr GM, Kaizer MDR, Gonzaga CC. The bleaching efficacy of carbamide peroxide gels containing potassium nitrate desensitizer. J Clin Exp Dent 2020; 12:e644-e649. [PMID: 32905070 PMCID: PMC7462381 DOI: 10.4317/jced.56917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/13/2020] [Indexed: 12/02/2022] Open
Abstract
Background To evaluate the bleaching efficacy of at-home carbamide peroxide (CP) gels in two concentrations, containing or not a desensitizing agent.
Material and Methods Forty incisors were divided into four groups (n=10), according to gel concentrations (10% or 22%), and presence or not of 3% potassium nitrate in the gel. A thin layer of gel was applied to the buccal surface of each tooth for 2h/day for 4 weeks. Bleaching efficacy was measured using a spectrophotometer, and ∆E*ab, ∆E00 and ∆WID were calculated. Measurements were performed at baseline, 7, 14, 21, 28, and 35 days following the first gel application. Data were analyzed by two-way RM-ANOVA and Tukey’s test (α=0.05).
Results Regarding gel concentration or potassium nitrate inclusion, both gels resulted in color change above the perceptibility thresholds, which were similar between gels. Regarding time, significant differences were observed between color change values at 7 days and other time periods. ∆WID ranged from 3.8 to 9.6. Significant moderate to strong positive correlation was observed among the parameters.
Conclusions Nor the CP concentration, neither the inclusion of potassium nitrate in the gel, had influence on bleaching efficacy. All gels were effective and showed good results from the first weeks’ application. Key words:Tooth bleaching, carbamide peroxide, desensitizer, potassium nitrate, color.
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Affiliation(s)
- Adriana-Osten Costacurta
- DDS, MS. Graduate Student, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | - Carolina-Elisa-Pereira Borges
- Undergraduate Student, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | - Camila Centenaro
- DDS. Graduate Student, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | - Gisele-Maria Correr
- DDS, MS, PhD. Graduate Student, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | - Marina-da Rosa Kaizer
- DDS, MS, PhD. Graduate Student, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | - Carla-Castiglia Gonzaga
- DDS, PhD. Professor, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
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20
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ESPÍNDOLA-CASTRO LF, CELERINO PRRP, NASCIMENTO TAD, MONTEIRO GQDM, CORREIA TC. Evaluation of the effect of tooth polishing on color stability after in-office bleaching treatment. REVISTA DE ODONTOLOGIA DA UNESP 2020. [DOI: 10.1590/1807-2577.02320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction One of the most commonly used corrective methods for staining teeth is tooth bleaching. However, subclinical alterations may occur in the micromorphology of dental tissues during the bleaching procedure, such as increases in porosity and surface roughness. Consequently, dental enamel may become more permeable and susceptible to staining. Objective To evaluate the influence of tooth polishing after in-office bleaching treatment on color stability. Material and method Thirty-three extracted human molars were used. The teeth were cut in the mesiodistal direction to obtain two samples per tooth (total of 66). The samples were randomly divided into six groups (n=11). Before and after the bleaching treatment, the lightness of the samples and change in lightness (∆L) were determined with a digital spectrophotometer (Easy Shade). The samples were bleached with 35% hydrogen peroxide (three sessions weekly). Three groups were submitted to polishing with felt discs and polishing paste after each session. To simulate the oral conditions during the consumption of colored beverages, the samples were submitted to alternating cycles of immersion in staining solutions (coffee, red wine, and Coca Cola). Result Polishing resulted in an increase of mean lightness of 4.49 in the red wine group, 2.73 in the coffee group, and 4.08 in the cola group. The difference was significant in the red wine group (p<0.022), but not in the coffee or cola group. Conclusion Polishing after in-office bleaching using felt discs and polishing paste can reduce the degree of pigment impregnation in patient with red wine rich diet.
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21
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Karakaya I, Cengiz‐Yanardag E. Changes in Optical Characteristics and Surface Topography of CAD/CAM Materials after Bleaching Applications: An AFM Evaluation. J Prosthodont 2019; 29:226-236. [DOI: 10.1111/jopr.13134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2019] [Indexed: 11/30/2022] Open
Affiliation(s)
- Izgen Karakaya
- Faculty of DentistryDepartment of Restorative DentistryNear East University Mersin 10 Turkey
| | - Esra Cengiz‐Yanardag
- Faculty of DentistryDepartment of Restorative DentistryMersin University Mersin Turkey
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