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Boccuzzi M, Nota A, Cosola S, De Simone G, Iozzo R, Pittari L, Hwang MH, Bosco F, Polizzi E, Tecco S. Effect of bleaching treatments on the adhesion of orthodontic brackets: a systematic review. BMC Oral Health 2023; 23:758. [PMID: 37833672 PMCID: PMC10576373 DOI: 10.1186/s12903-023-03418-9] [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: 02/03/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND Nowadays bleaching procedures have gained popularity in orthodontic patients. Peroxide and Carbamide acids are the common agents which are used in in-office and at home bleaching techniques. Consequently, the Bonding adhesion to the enamel can be influenced by the orthodontic phase and the residual peroxide might interfere with the polymerization and the adhesion of the brackets. Frequent debonding of the brackets from teeth after the bleaching procedure could cause the lengthening of the therapy and promote irregularities on enamel surface derived from an additional bonding phase of the brackets. The aim of this systematic review is to appraise the influence regarding the effect of the bleaching procedure on the bond strength of orthodontic brackets. METHODS An electronic database search was performed. Search terms included: bleaching, brackets, adhesion; data were extracted and summarized. Risk of bias was assessed using the Chocrane risk of bias tool, adapted for in vitro studies. RESULTS A total of 8689 articles were screened and 11 studies met the inclusion criteria of this systematic review. 1000 teeth of human and bovine origin were analyzed for the shear bond strength (SBS) of stainless and ceramic brackets after the bleaching treatments. All the authors divided the groups in different subgroups with different bleaching agents and in different concentration. The SBS value allowed to demonstrate the necessity to delay the bonding of the brackets for two weeks after a bleaching treatment and its improvement when tooth mousse or antioxidants agents are used. CONCLUSIONS The SBS values and the delay of the bonding procedure must be considered in dental practice and clinical strategies are necessary in order to avoid drawbacks which could cause the debonding of the brackets after bleaching due to the alterations of the dental substrate, thus interfering with the orthodontic treatments.
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Affiliation(s)
- Michela Boccuzzi
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
- Department of Stomatology, Tuscan Stomatologic Institute, Foundation for Dental Clinic, Research and Continuing Education, 55042, Forte Dei Marmi, Italy
| | - Alessandro Nota
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
| | - Saverio Cosola
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy.
- Department of Stomatology, Tuscan Stomatologic Institute, Foundation for Dental Clinic, Research and Continuing Education, 55042, Forte Dei Marmi, Italy.
| | - Giada De Simone
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
| | - Rosa Iozzo
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
| | - Laura Pittari
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
- MeSVA, University of L'Aquila, 67100, L'Aquila, Italy
| | - Myoung Hwan Hwang
- New Smiles Dental Implant Center Galleria, 2930 Chimney Rock Rd, Houston, TX, USA
| | - Floriana Bosco
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
| | - Elisabetta Polizzi
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
| | - Simona Tecco
- Dental School, Vita-Salute San Raffaele University, I.R.C.C.S San Raffaele Hospital, Via Olgettina 58, Milan, 20132, Italy
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Arslan S, Balkaya H, Durukan SM, Silici S. The effect of propolis on the bond strength of composite resin to enamel after intracoronal bleaching with different bleaching agents. AUST ENDOD J 2023; 49 Suppl 1:366-373. [PMID: 36960971 DOI: 10.1111/aej.12750] [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: 02/13/2022] [Accepted: 03/06/2023] [Indexed: 03/25/2023]
Abstract
This study evaluated the effect of propolis as an antioxidant agent on bond strength to enamel after intracoronal bleaching. A total of 160 incisors were endodontically treated. Sixteen teeth were served as control, and the remaining teeth were randomly divided into three main groups according to the bleaching agent used; group 1: Sodium perborate (SP); group 2: Carbamide peroxide (CP); group 3: Hydrogen peroxide (HP). After bleaching, the samples were divided into three subgroups; subgroup A: no antioxidant agent application, subgroup B: sodium ascorbate (SA), subgroup C: propolis (PP). After the antioxidant agents application, the sample's surfaces were washed and dried. After adhesive application, composite resin cylinders were applied to enamel surfaces using tygon tubes and a shear bond strength test was performed. The use of PP significantly decreased the bond strength of composite resin to the enamel (p < 0.05). Using propolis as an antioxidant agent adversely affects the bond strength to enamel after intracoronal bleaching.
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Affiliation(s)
- Soley Arslan
- Department of Restorative Dentistry, Erciyes University Faculty of Dentistry, Kayseri, Turkey
| | - Hacer Balkaya
- Department of Restorative Dentistry, Erciyes University Faculty of Dentistry, Kayseri, Turkey
| | - Sebahat Melike Durukan
- Department of Restorative Dentistry, Erciyes University Faculty of Dentistry, Kayseri, Turkey
| | - Sibel Silici
- Department of Agricultural Biotechnology, Nutral Therapy Co. Erciyes Technopark, Erciyes University Faculty of Agriculture, Kayseri, Turkey
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Zhang H, Chen J, Wang Y, Yu Y, Zhao Y, Song J, Zhang Z. Fracture strength and bonding interface morphology of CAD/CAM-fabricated ceramic laminate veneers on bleached enamel treated with two different antioxidants. Dent Mater J 2023:2022-205. [PMID: 37302824 DOI: 10.4012/dmj.2022-205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study aimed to investigate the effects of two antioxidants and their application time on the fracture strength of computer-aided design and computer-aided manufacturing (CAD/CAM)-fabricated ceramic laminate veneers to bleached enamel, as well as their effects on the bonding interface micromorphology. Eight groups were set: Group NC (without bleaching and antioxidant treatment); Group NA (bleaching without antioxidant treatment); Group SA30, SA60, SA120 and Group PAC30, PAC60, PAC120 (bleaching and treating with sodium ascorbate or proanthocyanidins for 30, 60, and 120 min, respectively). After cementation of veneers, fracture strength values and failure modes were analyzed. The bonding interface morphology was observed by confocal laser scanning microscopy. The fracture strength was impaired when cementation procedure was performed immediately after bleaching. This reduction in fracture strength was reestablished with antioxidant treatment, and an extended treatment time contributed to better improvement. The resin tags at the bonding interfaces of the bleached enamel were impaired. Antioxidant treatments were able to reverse this unfavorable trend.
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Affiliation(s)
- Hong Zhang
- Department of Endodontics, Hospital of Stomatology, Jilin University
| | - Jiawen Chen
- Department of Endodontics, Hospital of Stomatology, Jilin University
| | - Ying Wang
- Department of Stomatology, Yangpu Hospital, School of Medicine, Tongji University
| | - Yiyan Yu
- Department of Endodontics, Hospital of Stomatology, Jilin University
| | - Yuanhang Zhao
- Department of Endodontics, Hospital of Stomatology, Jilin University
| | - Jiazhuo Song
- Department of Endodontics, Hospital of Stomatology, Jilin University
| | - Zhimin Zhang
- Department of Endodontics, Hospital of Stomatology, Jilin University
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4
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Zhang M, Guo J, Chen X, Gao M. Effect of photodynamic therapy on resin-dentin bonding interface using different illumination time. Photodiagnosis Photodyn Ther 2022; 38:102747. [PMID: 35123014 DOI: 10.1016/j.pdpdt.2022.102747] [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: 11/22/2021] [Revised: 01/20/2022] [Accepted: 01/31/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The aim of the present study was to evaluate the effect of photodynamic therapy(PDT) on the resin-dentin bonding interface using different illumination time. METHODS Seventy completed, isolated molar teeth were collected for this study, sixty of them were used in microtensile bond strength tests. These teeth were initially divided randomly in two main groups(n=30) by the random number table method upon the type of using illumination or not respectively. Then these groups followed by dividing each category in five subgroups(n=6): group A, group B1,group B2, group B3, group B4, group a, group b1, group b2, group b3, group b4. After different treatment, the remaining teeth were made specimens which were observed the fracture modes and interfaces under a stereomicroscope and a scanning electron microscope(SEM). The dentin permeability of the specimens were evaluated by a laser scanning confocal microscope(LSCM). To detect significance difference between means of different groups analysis of variance(ANOVA) was performed followed by LSD-t tests. RESULTS There was a significant statistical difference in the microtensile bond strength of the different illumination time of PDT between four experimental groups and the control (P<0.05). CONCLUSION With the increase of the illumination time in PDT, the bonding strength between resin and dentin decreased gradually.
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Affiliation(s)
- Meng Zhang
- Department of Stomotology,First Hospital Affiliated to Zhengzhou University,Zhengzhou University,Zhengzhou,450052,China
| | - Jia Guo
- Department of Stomotology,First Hospital Affiliated to Zhengzhou University,Zhengzhou University,Zhengzhou,450052,China.
| | - Xi Chen
- Department of Stomotology,First Hospital Affiliated to Zhengzhou University,Zhengzhou University,Zhengzhou,450052,China
| | - Mengjie Gao
- Department of Stomotology,First Hospital Affiliated to Zhengzhou University,Zhengzhou University,Zhengzhou,450052,China
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Samaha AE, ElFadl AK, Anwar MN. The micro-shear bond strength of resin cements to aged laser bleached enamel after using different desensitizing agents. Clin Exp Dent Res 2021; 8:248-256. [PMID: 34562058 PMCID: PMC8874074 DOI: 10.1002/cre2.496] [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: 01/06/2021] [Revised: 09/06/2021] [Accepted: 09/09/2021] [Indexed: 11/10/2022] Open
Abstract
Objectives To evaluate the micro‐shear bond strength of two resin cements to aged laser bleached enamel after the application of three different desensitizing agents. Materials and methods Forty extracted human central and lateral incisors were prepared and bleached using laser activation bleaching protocol. The teeth were assigned randomly into four groups for desensitization; G1: No post‐bleaching treatment, G2: GC MI Paste Plus, G3: Hydroxyapatite nanoparticles (n‐HAP) and G4: Flor‐Opal. Specimens were subjected to aging for 6 months. All groups were subdivided into two subgroups according to the resin cements used (dual‐curing resin cement and light‐curing resin cement). Results Flor‐Opal groups showed the highest statistically significant micro‐shear bond strength (MSBS), followed by GC MI Paste Plus and n‐HAP groups with no statistically significant difference between them. The light‐curing resin cement had statistically higher MSBS than dual‐curing resin cement in case of no‐post bleaching treatment and n‐HAP groups, and no statistical difference in case of GC MI Paste Plus and Flor‐Opal groups. Conclusion Usage of desensitizing agents containing, CPP‐ACP, n‐HAP or fluoride after laser bleaching can enhance the bond strength of the resin cements to enamel. Clinical significance The composition of the desensitizing agents applied after laser bleaching could interfere in bond strength values.
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Affiliation(s)
- Aya E Samaha
- Faculty of Dentistry, Ain Shams university, Cairo, Egypt
| | - Ahmad K ElFadl
- Faculty of Dentistry, Ain Shams university, Cairo, Egypt
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Cevval Ozkocak BB, Aytac Bal F. Effect of diode laser-assisted bleaching on the bond strength of different adhesive systems to enamel: Interfacial SEM analysis. Microsc Res Tech 2021; 84:1542-1552. [PMID: 33511727 DOI: 10.1002/jemt.23711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 12/19/2020] [Accepted: 01/08/2021] [Indexed: 11/08/2022]
Abstract
The aim of this study was to investigate the effectiveness of diode laser-assisted bleaching on the shear bond strength (SBS) of different adhesive systems to enamel and examine the adhesive enamel interface under scanning electron microscope (SEM). 180 incisor teeth were randomly divided into three bleaching groups: (1) Unbleached control group, (2) Opalescence Boost (OB) 40%, and (3) Diode laser-assisted LaserWhite20 (LW20) 45%. After bleaching, each group was divided into two subgroups according to waiting time: immediately or 7 days' delay. The six groups were then divided into three subgroups based on the adhesive procedure: Single Bond 2 (SB2), Clearfil SE Bond (CSB), and Clearfil Universal Bond (CUB). After adhesive procedures, composite resin cylinders were bonded to the enamel surfaces. All specimens were subjected to a SBS test after 24 hr of storage in water. Data were analysed using three-way variance analysis (p < .05). Specimens were examined under a stereomicroscope and SEM. There was a significant difference between the groups bonded immediately and 7 days after bleaching (p < .05). SB2 after 7 days showed the highest SBS values (19.24 ± 2.18), whereas CUB showed the lowest values in both bleaching treatments and control groups (10.84 ± 1.66). SEM analysis of the unbleached specimens revealed long tags and uniform hybrid layer compared OB and LW20 bleaching groups. LW20 and OB bleaching adversely affected SBS to enamel when bonded immediately. Diode laser-assisted bleaching might be an alternative option due to the short working time but delaying bonding for 7 days after bleaching may not be enough for ideal adhesion. RESEARCH HIGHLIGHTS: Bleaching agents containing high concentration hydrogen peroxide reduces the enamel bond strength of adhesive systems. Postponing composite restorations for 7 days after bleaching may not be sufficient to achieve ideal adhesion. Diode laser-assisted bleaching may be preferred as an alternative bleaching method today due to its ability to shorten the operation time and cause minimal morphological changes on the enamel surface.
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Affiliation(s)
- Begum Busra Cevval Ozkocak
- Faculty of Dentistry, Department of Restorative Dentistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Fatma Aytac Bal
- Faculty of Dentistry, Department of Restorative Dentistry, Beykent University, Istanbul, Turkey
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Savian TG, Oling J, Soares F, Rocha RO. Vital Bleaching Influences the Bond Strength of Adhesive Systems to Enamel and Dentin: A Systematic Review and Meta-Analysis of In Vitro Studies. Oper Dent 2021; 46:E80-E97. [PMID: 34157122 DOI: 10.2341/20-035-lit] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE Vital bleaching impairs the bonding of adhesive systems to enamel and dentin. Thus, restoration placement should be delayed for at least two weeks after completion of bleaching procedures. SUMMARY Objective: This systematic review evaluates the influence of vital bleaching on the bond strength of adhesive systems to enamel and dentin.Methods: This review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA). In vitro studies comparing the bond strength of bleached and unbleached enamel and dentin were searched at the electronic databases-PubMed/MEDLINE, Scopus, and Web of Science-with no limit on year or language. The studies were screened and had data extracted by two reviewers independently. Bond strength data were meta-analyzed using the inverse variance method and the random effect model (p≤0.05).Results: The electronic search provided 4941 eligible studies, and 52 were included in the systematic review and the meta-analysis. The global meta-analysis showed that bleaching impairs the bond strength of adhesive systems to enamel and dentin (p<0.001; mean difference [MD]: -0.96; confidence interval [CI]: -1.18 to -0.73), regardless of the bleaching agent (p<0.001; MD: -9.98; CI: -1.37 to -0.58) or substrate (p<0.001; MD: -0.89; CI: -1.12 to -0.66). The detrimental effect of bleaching on bond strength was not observed after two and three weeks after bleaching (p=0.1; MD: -0.39; CI: -0.84 to 0.65; and p=0.18; MD: -0.99; CI: -2.45 to 0.47, respectively).Conclusion: This systematic review and meta-analysis demonstrated that vital bleaching impairs the bonding of adhesive systems to enamel and dentin, and this adverse effect persists for two weeks.
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8
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Effect of photodynamic therapy on microleakage of class V composite restorations in primary teeth. Photodiagnosis Photodyn Ther 2020; 32:101964. [DOI: 10.1016/j.pdpdt.2020.101964] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 05/14/2020] [Accepted: 08/03/2020] [Indexed: 11/19/2022]
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Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces. Int J Dent 2020; 2020:2609359. [PMID: 32508923 PMCID: PMC7244969 DOI: 10.1155/2020/2609359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 11/25/2022] Open
Abstract
The objective of this in vitro study was to assess the influence of prolonged bleaching pre- and postrestoration on the bond strength (microshear) to enamel using 4% hydrogen peroxide (PH4). In the postrestorative bleached specimens evaluation, the composite cylinders were assembled after bleaching, while in the prebleached specimens, the cylinders were assembled before. Therefore, in the postbleached specimens, 60 bovine teeth were randomly assigned as follows: G1: control; G2: 14 days bleaching before bond strength (BS) testing; G3: 21 days; and G4: 28 days. In prebleached specimens, 180 bovine teeth were randomly assigned as follows: G1: control; G5: 14 days bleaching, storage in artificial saliva (AS) for 24 h before BS testing; G6: 14 days beaching, AS storage for 7 days before BS testing; G7: 21 days bleaching, AS storage for 24 h before BS testing; G8: 21 days bleaching, AS storage for 7 days before BS testing; G9: 28 days bleaching, AS storage for 24 hours before BS testing; and G10 : 28 days bleaching, AS storage for 7 days before BS testing. The results were submitted to ANOVA one-way (postrestoration bleaching) and two-way (prerestoration bleaching) and Tukey's post hoc test (p ≤ 0.05). In the postrestoration bleaching, no statistical difference between times was found. However, when bleached groups were compared to the control (G1), an expressive difference was detected (p ≤ 0.0001). For prerestoration bleaching, all experimental groups were statistically different from G1 (p ≤ 0.05), except G6 (p ≥ 0.01), and for G5 and G6, statistical differences were found (p ≤ 0.01). There were no significant differences between G7 and G8 and between G9 and G10, regardless of the AS storage times (p ≥ 0.05). It was concluded that prolonged bleaching with PH4 decreased adhesion resistance regardless of the moment of the bleaching (post- and prerestoration bleaching).
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Shahi M, Velugu GR, Choudhary E. Comparative evaluation of the effect of 10%, 20%, and 30% guava seed extract on reversing compromised resin bond strength after enamel bleaching in 120 min, 10 min, and 5 min: An in vitro study. J Conserv Dent 2020; 23:66-70. [PMID: 33223645 PMCID: PMC7657431 DOI: 10.4103/jcd.jcd_148_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/26/2020] [Accepted: 07/18/2020] [Indexed: 11/23/2022] Open
Abstract
Background: Bonding of composite with enamel and dentin gets compromised if the tooth is restored with composite immediately post bleaching. The application of antioxidants has shown to have a positive effect on it. Aim: The aim of this study was to evaluate and compare the effect of guava seed extract solutions in various concentrations on the shear bond strength (SBS) of composite resin to bleached enamel when applied for 5 min, 10 min, and 120 min. Materials and Methods: Fifty-five maxillary incisors were procured, and labial surfaces of 50 specimens were bleached with 37.5% hydrogen peroxide. These specimens were divided into 3 experimental groups: Group 1–3 comprising 15 specimens each (n = 15), and the remaining specimens were divided into two groups: Group 4 (positive control group) and Group 5 (negative control group). Groups 1–3 were further divided into 3 subgroups according to the application period of antioxidant: subgroups A, B, and C. Specimens were stored in distilled water for 24 h. SBS testing was done using the universal testing machine. Data were tabulated and subjected to statistical analysis using a three-way analysis of variance with post hoc Tukey's test. Results: Guava seed extract showed a complete reversal of the compromised bond strength, and promising results were seen with increased concentration. Conclusion: The use of antioxidants effectively reversed the compromised bond strength of bleached enamel, and an increase in the concentration of antioxidants reduces the duration of its application.
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Affiliation(s)
- Mohnisha Shahi
- Department of Conservative Dentistry and Endodontics, School of Dental Sciences, Sharda University, Greater Noida, Uttar Pradesh, India
| | - G Ratna Velugu
- Department of Conservative Dentistry and Endodontics, School of Dental Sciences, Sharda University, Greater Noida, Uttar Pradesh, India
| | - Ekta Choudhary
- Department of Conservative Dentistry and Endodontics, School of Dental Sciences, Sharda University, Greater Noida, Uttar Pradesh, India
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Nery-Silva IS, Rover G, Tedesco M, Garcia LDFR, Bortoluzzi EA, Alves AMH, Teixeira CS. Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine. Eur J Dent 2019; 13:335-342. [PMID: 31618786 PMCID: PMC6890482 DOI: 10.1055/s-0039-1697557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective
The purpose of this study was to evaluate the effect of the intracoronary bleaching and calcium hydroxide (Ca(OH)
2
) dressing use, on the bond strength (BS) of fiberglass posts to root dentine.
Materials and Methods
After root canal filling of 40 bovine incisors, a 2-mm thick cervical plug was fabricated 2 mm below the cementum–enamel junction. Seven days later, teeth were randomly distributed into four groups (
n
= 10), as follows: G1 no bleaching, followed by immediate post cementation; G2 bleaching and immediate post cementation; G3 bleaching, dressing with Ca(OH)
2
for 7 days, and post cementation; and G4 bleaching, no dressing, and post cementation after 7 days. The roots were transversally cut into 1-mm thick slices to perform the push-out test (0.5 mm/min). Failure modes were assessed under scanning electron microscopy.
Statistical Analysis
The analysis of variance (two-way ANOVA) was performed, followed by the supplementary Tukey multiple comparison test (
a
= 5%).
Results
No significant difference for BS was observed among groups. Considering the different root thirds, G1 had higher BS values for the cervical third in comparison with the apical one (
p
< 0.05). The most frequent failure modes were adhesive between cement/dentine (G1); cohesive at the post (G2 and G3), and mixed (G4).
Conclusions
The BS of the fiberglass posts to root dentine was not affected by the intracoronary bleaching and the use of Ca(OH)
2
dressing.
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Affiliation(s)
- Iane Souza Nery-Silva
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Gabriela Rover
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Maybell Tedesco
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Ana Maria Hecke Alves
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice Silveira Teixeira
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Mulgaonkar A, de Ataide IDN, Fernandes M, Lambor R, Soares R. Effect of bromelain enzyme on the microleakage of composite resin restorations after external tooth bleaching: An in vitro study. J Conserv Dent 2019; 22:436-440. [PMID: 33082658 PMCID: PMC7537748 DOI: 10.4103/jcd.jcd_340_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 06/25/2020] [Accepted: 07/03/2020] [Indexed: 11/24/2022] Open
Abstract
Aims: The aim of this study is to evaluate in vitro the effect of application of bromelain enzyme on the microleakage of composite resin restorations after external tooth bleaching using spectrophotometric evaluation. Subjects and Methods: Buccal Class V cavities were prepared on the surface of fifty intact premolars, which were randomly divided into five groups. All cavities were filled with composite resin. Group I: Teeth were not bleached but restored (n = 10). External bleaching with 35% hydrogen peroxide was carried out for the rest of the specimens Group II: Cavities were restored immediately after bleaching (n = 10) Group III: Cavities were restored after a delay of 3 weeks (n = 10) Group IV: Cavities were treated with sodium ascorbate after bleaching and then restored (n = 10) Group V: Cavities were treated with bromelain enzyme solution after bleaching and then restored (n = 10). Microleakage was assessed by the dye extraction method using a spectrophotometer.
Statistical Analysis Used: The data were analyzed statistically by comparison of mean microleakage and post hoc test using SPSS 2.0 software. Results: Group I displayed the least amount of microleakage, whereas Group II showed the greatest amount of microleakage (P < 0.05). Groups III, IV, and V showed a significantly lower amount of microleakage compared to Group II (P < 0.05). There was no statistically significant difference between Groups IV and V. Conclusions: Microleakage increased significantly after external bleaching with 35% hydrogen peroxide, and decreased when the bleached teeth were treated with antioxidants. Ten percent bromelain enzyme was effective in decreasing microleakage; however, its efficacy was similar to 10% sodium ascorbate.
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Affiliation(s)
- Aarti Mulgaonkar
- Department of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Bambolim, Goa, India
| | - Ida de Noronha de Ataide
- Department of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Bambolim, Goa, India
| | - Marina Fernandes
- Department of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Bambolim, Goa, India
| | - Rajan Lambor
- Department of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Bambolim, Goa, India
| | - Renita Soares
- Department of Conservative Dentistry and Endodontics, Goa Dental College and Hospital, Bambolim, Goa, India
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Khan E, Alshahrani I, Kamran MA, Samran A, Alqerban A, Rehman SA. Influence of phototherapy on adhesive strength and microleakage of bleached enamel bonded to orthodontic brackets: An in-vitro study. Photodiagnosis Photodyn Ther 2019; 25:344-348. [DOI: 10.1016/j.pdpdt.2019.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/04/2019] [Accepted: 01/11/2019] [Indexed: 11/30/2022]
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Oz FD, Kutuk ZB. Effect of various bleaching treatments on shear bond strength of different universal adhesives and application modes. Restor Dent Endod 2018; 43:e20. [PMID: 29765900 PMCID: PMC5952058 DOI: 10.5395/rde.2018.43.e20] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/19/2018] [Indexed: 11/30/2022] Open
Abstract
Objectives The aim of this in vitro study was to evaluate the bond strength of 2 universal adhesives used in different application modes to bleached enamel. Materials and Methods Extracted 160 sound human incisors were used for the study. Teeth were divided into 4 treatment groups: No treatment, 35% hydrogen peroxide, 16% carbamid peroxide, 7.5% carbamid peroxide. After bleaching treatments, groups were divided into subgroups according to the adhesive systems used and application modes (n = 10): 1) Single Bond Universal, etch and rinse mode; 2) Single Bond Universal, self-etch mode; 3) Gluma Universal, etch and rinse mode; 4) Gluma Universal, self-etch mode. After adhesive procedures nanohybrid composite resin cylinders were bonded to the enamel surfaces. All specimens were subjected to shear bond strength (SBS) test after thermocycling. Data were analyzed using a 3-way analysis of variance (ANOVA) and Tukey post hoc test. Results No significant difference were found among bleaching groups (35% hydrogen peroxide, 16% carbamid peroxide, 7.5% carbamid peroxide, and no treatment groups) in the mean SBS values. There was also no difference in SBS values between Single Bond Universal and Gluma Universal at same application modes, whereas self-etch mode showed significantly lower SBS values than etch and rinse mode (p < 0.05). Conclusions The bonding performance of the universal adhesives was enhanced with the etch and rinse mode application to bleached enamel and non-bleached enamel.
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Affiliation(s)
- Fatma Dilsad Oz
- Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey
| | - Zeynep Bilge Kutuk
- Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey
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Alencar MS, Bombonatti JFS, Maenosono RM, Soares AF, Wang L, Mondelli RFL. Effect of Two Antioxidants Agents on Microtensile Bond Strength to Bleached Enamel. Braz Dent J 2016; 27:532-536. [DOI: 10.1590/0103-6440201600757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 06/30/2016] [Indexed: 11/21/2022] Open
Abstract
Abstract This in vitro study evaluated the effect of sodium bicarbonate and sodium ascorbate on the microtensile bond strength of an etch-and-rinse system to bleached bovine enamel. Sixty bovine enamel blocks (4x4 mm) were flattened and randomly allocated into 5 groups: G1 (negative control): without treatment; G2 (positive control): bleached with 35% hydrogen peroxide (HP); G3: bleached and stored for 7 days in artificial saliva before restorative procedures; G4: bleached and treated with 10% sodium bicarbonate solution for 5 min; G5: bleached and treated with 10% sodium ascorbate hydrogel for 15 min. HP gel was applied twice (20 min each, except in G1) and the adhesive restorations were performed. After 24 h, the specimens were sectioned into sticks and submitted to microtensile bond strength testing with a crosshead speed of 0.5 mm/min (n=12). As a complementary visual observation, the enamel surfaces of the G1 and G2 specimens were evaluated with scanning electron microscopy. Data were analyzed by one-way ANOVA (p<0.05). The means (standard deviation) were: G1: 24.22±7.74; G2: 18.29±5.88; G3: 40.88±7.95; G4: 19.95±5.67 and G5: 24.43±6.43. Adhesive failures were predominant in all groups. The comparison between the treatments indicates that waiting 7 days after bleaching is still the most effective approach. When this waiting period is not possible, application of sodium ascorbate or sodium bicarbonate seems to be a good alternative. Therefore, the practicality of obtaining sodium bicarbonate in the bleaching kits and its higher stability enables its clinical use.
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Cooper JR, Young NB, Haywood VB, Mettenburg D, Callan RS, Rueggeberg FA. Effect of Short-Duration, Localized Carbamide Peroxide Application to Remove Enamel Staining on Bond Strength of Resin Cement to Enamel. J ESTHET RESTOR DENT 2016; 28:190-6. [PMID: 26936612 DOI: 10.1111/jerd.12200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UNLABELLED Objective Peripheral enamel staining is often noticed after removal of long-term veneer or crown provisional restorations. Application of carbamide peroxide (CP) easily removes the stain, but the potential for immediate bonding with a resin-based cement is questionable. This project tested the short-term, shear bond strength of a commercial, photo-curable, resin cement to bovine enamel after application of a 10% concentration of CP placed for different exposure times. MATERIALS AND METHODS Bovine enamel was flattened and polished. Surfaces had either no CP application (control), or 10% CP applied for 10, 20, or 30 seconds. Teeth were acid-etched, rinsed, dried, and controlled sized stubs of a commercial resin cement were photocured onto the treated surfaces. The shear bond strength of each specimen was determined using a universal testing machine, and results were compared using an analysis of variance at a preset alpha of 0.5 (n = 10/group). RESULTS No significant differences (p = 0.819) in shear bond strength were found among any CP cleaning treatments or the experimental (nontreated) control. CONCLUSIONS Short-term application of 10% carbamide peroxide prior to acid etching, to remove enamel stains in teeth prepared to receive ceramic veneers or crowns, does not reduce immediate shear bond strength of resin-based cement to enamel. CLINICAL SIGNIFICANCE Clinicians can confidently apply 10% CP for short-term, localized stain removal on enamel and not be concerned about affecting subsequent bond strength of a resin-based cement to enamel. (J Esthet Restor Dent, 2016).
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Affiliation(s)
- Jeril R Cooper
- Associate Professor, Department of General Dentistry, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
| | - Nancy B Young
- Assistant Professor, Department of General Dentistry, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
| | - Van B Haywood
- Professor, Department of Oral Rehabilitation, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
| | - Don Mettenburg
- Dental Research Equipment Technician, Department of Oral Rehabilitation, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
| | - Richard S Callan
- Associate Professor, Chairman, Department of General Dentistry, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
| | - Fredrick A Rueggeberg
- Professor, Section Director, Dental Materials, Department of Oral Rehabilitation, College of Dental Medicine, Georgia Regents University, 1430 John Wesley Gilbert Dr, GC-3210, Augusta, GA, 30912, USA
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Kadiyala A, Saladi HK, Bollu IP, Burla D, Ballullaya SV, Devalla S, Maroli S, Jayaprakash T. Effect of Different Anti-Oxidants on Shear Bond Strength of Composite Resins to Bleached Human Enamel. J Clin Diagn Res 2015; 9:ZC40-3. [PMID: 26674656 DOI: 10.7860/jcdr/2015/16140.6790] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 10/11/2015] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The bond strength of the composite to the bleached enamel plays a very important role in the success and longevity of an aesthetic restoration. AIM The aim of this study was to compare and evaluate the effect of Aloe Vera with 10% Sodium Ascorbate on the Shear bond strength of composite resin to bleached human enamel. MATERIALS AND METHODS Fifty freshly extracted human maxillary central incisors were selected and divided into 5 groups. Group I and V are unbleached and bleached controls groups respectively. Group II, III, IV served as experimental groups. The labial surfaces of groups II, III, IV, V were treated with 35% Carbamide Peroxide for 30mins. Group II specimens were subjected to delayed composite bonding. Group III and IV specimens were subjected to application of 10% Sodium Ascorbate and leaf extract of Aloe Vera following the Carbamide Peroxide bleaching respectively. Specimens were subjected to shear bond strength using universal testing machine and the results were statistically analysed using ANOVA test. Tukey (HSD) Honest Significant Difference test was used to comparatively analyse statistical differences between the groups. A p-value <0.05 is taken as statistically significant. RESULTS The mean shear bond strength values of Group V showed significantly lower bond strengths than Groups I, II, III, IV (p-value <0.05). There was no statistically significant difference between the shear bond strength values of groups I, II, III, IV. CONCLUSION Treatment of the bleached enamel surface with Aloe Vera and 10% Sodium Ascorbate provided consistently better bond strength. Aloe Vera may be used as an alternative to 10% Sodium Ascorbate.
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Affiliation(s)
- Anirudh Kadiyala
- Post Graduate Student, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Hari Krishna Saladi
- Post Graduate Student, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Indira Priyadarshini Bollu
- Senior Lecturer, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Devipriya Burla
- Senior Lecturer, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Srinidhi Vishnu Ballullaya
- Reader, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Srihari Devalla
- Professor, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Sohani Maroli
- Professor, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
| | - Thumu Jayaprakash
- Professor and HOD, Department of Conservative Dentistry & Endodontics, St. Joseph Dental College & Hospital , Duggirala, Eluru, Andhra Pradesh India
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Darzé FM, Amaral FLBD, França FMG, Turssi CP, Basting RT. Effect of 10% sodium bicarbonate on bond strength of enamel and dentin after bleaching with 38% hydrogen peroxide. REVISTA DE ODONTOLOGIA DA UNESP 2015. [DOI: 10.1590/1807-2577.1073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
AbstractIntroductionBy-products of hydrogen peroxide degradation released during dental bleaching influence the polymerization of adhesive systems and composite resins, causing a reduction in shear bond strength to the tooth.Objectivethe aim of this article was to evaluate the effect of 10% sodium bicarbonate (SB), applied for different lengths of time, on the shear bond strength to enamel and dentin after bleaching.Material and methodEnamel and dentin blocks were divided into groups (n=10): (1) control: no bleaching; (2) immediate: bleaching immediately followed by restoration; (3) 14-day: bleaching, restoration 14 days later; (4) SB for 10 minutes: bleaching, SB gel for 10 minutes, immediately followed by restoration; (5) SB for 20 minutes: bleaching, SB gel for 20 minutes, immediately followed by restoration. A 38% hydrogen peroxide gel (Opalescence Boost/Ultradent) was used. After application of the adhesive system, composite resin cylinders were mounted on the surface of the substrates in order to test shear bond strength. Result: ANOVA and Tukey tests showed significantly higher mean enamel bond strength values for the 14-day follow-up group and without significant differences for control group. Mean bond strength values obtained for the other groups were intermediate. When testing dentin, the Tukey test revealed a significantly higher mean bond strength value for the 14-day follow-up group when compared with application of SB for 20 minutes.ConclusionSB gel applied was unable to reverse the low bond strength to enamel and dentin after bleaching treatment.
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Han Y, Mo S, Jiang L, Zhu Y. Effects of antioxidants on the microleakage of composite resin restorations after external tooth bleaching. Eur J Dent 2014; 8:147-153. [PMID: 24966762 PMCID: PMC4054042 DOI: 10.4103/1305-7456.130581] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To compare the effects of three antioxidants (sodium ascorbate, sodium ascorbate combined with a surfactant, and catalase) on the microleakage of composite resin restorations after external tooth bleaching with 10% carbamide peroxide. MATERIALS AND METHODS Buccal cavities were prepared on the surface of 60 intact premolars, which were randomly divided into six groups. All cavities were filled with composite resin. In group 1, teeth were not bleached; in group 2, cavities were filled immediately after bleaching; in group 3, cavities were delay-filled for 3 weeks; in group 4, cavities were treated with sodium ascorbate after bleaching and then filled; in group 5, cavities were treated with sodium ascorbate combined with surfactant after bleaching and then filled; and in group 6, cavities were treated with catalase after bleaching and then filled. Microleakage of the restorations was measured from sections using a stereomicroscope. RESULTS Group 1 displayed the least amount of microleakage, while group 2 showed the greatest amount of microleakage (P < 0.05). Groups 3 and 4 were similar to group 2 (P > 0.05). However, groups 5 and 6 showed a significantly lower amount of microleakage compared to group 2 (P < 0.05). CONCLUSION Microleakage increased significantly after external bleaching with 10% carbamide peroxide, and decreased when the bleached teeth were treated with sodium ascorbate combined with Tween(®) 80, or with catalase. Catalase was more effective in decreasing microleakage, while delayed filling or treatment with sodium ascorbate alone did not effectively decrease the microleakage.
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Affiliation(s)
- Yanyan Han
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Sisu Mo
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Long Jiang
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Yaqin Zhu
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
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Miranda TAM, Moura SK, Amorim VHDO, Terada RSS, Pascotto RC. Influence of exposure time to saliva and antioxidant treatment on bond strength to enamel after tooth bleaching: an in situ study. J Appl Oral Sci 2014; 21:567-74. [PMID: 24473724 PMCID: PMC3891282 DOI: 10.1590/1679-775720130035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 09/12/2013] [Indexed: 11/24/2022] Open
Abstract
Objectives This study evaluated the influence of different exposure times to saliva
in situ in comparison with an antioxidant treatment on
composite resin bond strength to human enamel restored after tooth bleaching. Material and Methods Forty human teeth specimens measuring 5x5 mm were prepared and randomly allocated
into 5 groups with 8 specimens each: Gct (control group, restored on unbleached
enamel); Gbl (restored immediately after bleaching); Gsa (bleached, treated with
10% sodium ascorbate gel for 60 min and restored); G7d (bleached, exposed to
saliva in situ for 7 days and restored); and G14d (bleached,
exposed to saliva in situ for 14 days and restored). Restored
samples were cut into 0.8 mm2 sticks that were tested in microtensile.
Specimens were microscopically analyzed and failure modes were classified as
adhesive, cohesive, or mixed. Pretest and cohesive failures were not considered in
the statistical analysis, which was performed with one-way ANOVA and Tukey's
post-hoc test (α=0.05), with the dental specimen considered as
the experimental unit. Results Mean bond strength results found for Gbl in comparison with Gct indicated that
bleaching significantly reduced enamel adhesiveness (P<0.01). However, no
statistically significant differences were found between Gct, Gsa and G7d
(P>0.05). Bond strength found for G14d was significantly higher than for Gsa
(P<0.01). Fractures modes were predominantly of a mixed type. Conclusions Bonding strength to bleached enamel was immediately restored with the application
of sodium ascorbate and exposure to human saliva in situ for at
least 7 days. Best results were obtained with exposure to human saliva in
situ for 14 days. Treatment with sodium ascorbate gel for 60 min may
be recommended in cases patients cannot wait for at least 7 days for adhesive
techniques to be performed.
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Affiliation(s)
| | - Sandra Kiss Moura
- University North of Paraná, Department of Dentistry, LondrinaPR, Brazil
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Arumugam MT, Nesamani R, Kittappa K, Sanjeev K, Sekar M. Effect of various antioxidants on the shear bond strength of composite resin to bleached enamel: An in vitro study. J Conserv Dent 2014; 17:22-6. [PMID: 24554855 PMCID: PMC3915379 DOI: 10.4103/0972-0707.124113] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 10/14/2013] [Accepted: 11/17/2013] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVE The aim of this in vitro study was to evaluate and compare the effect of 10% sodium ascorbate, 6.5% proanthocyanidin, and 5% lycopene on the bond strength of composite resin to bleached enamel. MATERIALS AND METHODS Labial enamel surfaces of 100 extracted human maxillary central incisors were used in this study. Twenty teeth served as group I (control) and received no bleaching treatment. The remaining 80 teeth were randomly divided into four groups of 20 teeth each, based on the antioxidant used as follows: group II- bleaching with 35% carbamide peroxide gel for 30 min without the use of an antioxidant, group III- bleaching followed by use of 10% sodium ascorbate solution, group IV- bleaching followed by use of 6.5% proanthocyanidin, and group V- bleaching followed by use of 5% lycopene. These groups were further subdivided into two subgroups of 10 teeth each, based on whether composite buildup was done immediately (subgroup A) or after a delay of 2 weeks (subgroup B) post bleaching. Shear bond strength of the specimens was tested under universal testing machine. The data were tabulated and statistically analyzed. RESULTS Significantly higher shear bond strength values were observed in teeth treated with control group prior to bonding, followed by sodium ascorbate group. CONCLUSION Within the limitations of this study, it can be concluded all the antioxidants used in this study increased the bond strength of bleached enamel. Among the antioxidant groups, sodium ascorbate showed significantly higher bond strength compared to proanthocyanidin and lycopene.
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Affiliation(s)
| | - Ravikumar Nesamani
- Department of Conservative Dentistry, SRM Dental College, Ramapuram, Chennai, India
| | - Karthikeyan Kittappa
- Department of Conservative Dentistry, SRM Dental College, Ramapuram, Chennai, India
| | - Kavitha Sanjeev
- Department of Conservative Dentistry, SRM Dental College, Ramapuram, Chennai, India
| | - Mahalaxmi Sekar
- Department of Conservative Dentistry, SRM Dental College, Ramapuram, Chennai, India
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Moosavi H, Maleknejad F, Hoseinipour Z, Hatami L, Zeynali M. Antioxidant agents and their effects on shear bond strength of bleached enamel. J Contemp Dent Pract 2013; 14:871-875. [PMID: 24685790 DOI: 10.5005/jp-journals-10024-1418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The goal of this study was to fnd a method to eliminate bond strength reduction after vital bleaching. MATERIALS AND METHODS Sixty fat surfaces of enamel central human incisors were prepared by diamond disks. In the frst group, the samples immediately bonded to the tooth after bleaching. For the second group, the bleached samples were treated by sodium ascorbate for 1 hours. In the third and fourth groups the treatment was down using a new antioxidant agent for 1 hour and 15 minutes respectively. For the ffth group no bleaching was done. Cylindrical composite resin (Z 100) with a Single Bond adhesive system was bonded to the enamel with a special metal mold. After thermocycling, the samples were loaded at a crosshead speed of 0.5 mm/min. The mode of failures was inspected by the Dino Lite microscope and the microstructure of the debonding surfaces was observed by SEM. Considering normal data, statistical analysis was conducted by ANOVA and Tukey tests (p = 0.05). RESULTS The fourth group had maximum (21.82), while the frst group had the least (9.0971) shear bond strength. The ANOVA test showed a signifcant difference among the fve groups (p = 0.0002). There was not any signifcant statistical difference between the three types of debonding (p = 0.165). CONCLUSION The usage of sodium ascorbate or sodium ascorbate with detergent after vital bleaching are effective methods for reducing the damaging effects of bleaching agents on the shear bond strength of composite resin restoration to enamel. CLINICAL SIGNIFCANCE: Using antioxidants is necessary post bleaching and before resin bonding.
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Affiliation(s)
- Horieh Moosavi
- Associate Professor, Dental Materials Research Center, Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Khorasan, Iran, e-mail:
| | - Fatemeh Maleknejad
- Professor, Dental Research Center, Department of Operative Dentistry Faculty of Dentistry, Mashhad University of Medical Sciences Khorasan, Iran
| | - Zahra Hoseinipour
- Resident, Dental Materials Research Center, Department of Operative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Khorasan, Iran
| | - Lila Hatami
- Resident, Department of Operative Dentistry, Dental Materials Research Center, Khorasan, Iran
| | - Mahsa Zeynali
- Resident, Department of Operative Dentistry, Dental Material Research Center, Faculty of Dentistry, Mashhad University of Medical Sciences, Khorasan, Iran
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Soares CJ, Pereira JC, Souza SJB, Menezes MS, Armstrong SR. The Effect of Prophylaxis Method on Microtensile Bond Strength of Indirect Restorations to Dentin. Oper Dent 2012; 37:602-9. [PMID: 22616925 DOI: 10.2341/11-459-l] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The aim of this study was to evaluate the effect of different materials used for dentin prophylaxis on the microtensile bond strengths (μTBS) of adhesively cemented indirect composite restorations. Sixty bovine incisors had the buccal surface ground with wet #600-grit silicon carbide abrasive paper to obtain a flat exposed superficial dentin and were submitted to different prophylaxis protocols, as follows: 3% hydrogen peroxide (HydP); 0.12% chlorhexidine (Chlo); sodium bicarbonate jet (SodB); 50-μm aluminum oxide air abrasion (AirA); pumice paste (PumP), and control group–water spray (Cont). After prophylaxis protocols a resin composite block (3.0 mm × 5.0 mm × 5.0 mm) was adhesively cemented using dual resin cement (Rely X ARC). After 24 hours of water storage, specimens were serially sectioned perpendicular to the bonded interface into 1-mm-thick slices. Each specimen was trimmed with a diamond bur to an hourglass shape with a cross-sectional area of approximately 1.0 mm2 at the bonded area. Specimens were tested (μTBS) at 0.5 mm/min using a universal testing machine. Scanning electron microscopy was used to examine the effects of prophylaxis techniques on dentin. Bond strength data (MPa) were analyzed by one-way analysis of variance and failure mode by Fisher test (α=0.05). μTBS data, means (SD), were (different superscripted letters indicate statistically significant differences): AirA, 25.2 (7.2)a; PumP, 24.1 (7.8)a; Chlo, 21.5 (5.6)a; Cont, 20.6 (8.1)a; HydP, 15.5 (7.6)b; and SodB, 11.5 (4.4)c. The use of aluminum oxide air abrasion, pumice paste, and chlorhexidine before acid etching did not significantly affect μTBS to dentin; however, the use of hydrogen peroxide and sodium bicarbonate jet significantly reduced μTBS.
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Affiliation(s)
- CJ Soares
- Carlos José Soares, DDS, MS, PhD, professor and chairman, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - JC Pereira
- Janaína Carla Pereira, DDS, MS, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - SJB Souza
- Murilo Souza Menezes, DDS, MS, PhD, Professor, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - MS Menezes
- Murilo Souza Menezes, DDS, MS, PhD, Professor, Biomechanics Research Group, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - SR Armstrong
- Steven R Armstrong, DDS, PhD, professor and chairman, Department of Operative Dentistry, University of Iowa College of Dentistry, Iowa City, IA, USA
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Carvalho RM, Tjäderhane L, Manso AP, Carrilho MR, Carvalho CAR. Dentin as a bonding substrate. ACTA ACUST UNITED AC 2012. [DOI: 10.1111/j.1601-1546.2012.00274.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Garcia EJ, Oldoni TLC, Alencar SMD, Reis A, Loguercio AD, Grande RHM. Antioxidant activity by DPPH assay of potential solutions to be applied on bleached teeth. Braz Dent J 2012; 23:22-7. [DOI: 10.1590/s0103-64402012000100004] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 07/28/2011] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to assess, using the DPPH assay, the antioxidant activity of several substances that could be proposed to immediately revert the problems caused by bleaching procedures. The percentage of antioxidant activity (AA%) of 10% ascorbic acid solution (AAcidS), 10% ascorbic acid gel (AAcidG), 10% sodium ascorbate solution (SodAsS), 10% sodium ascorbate gel (SodAsG), 10% sodium bicarbonate (Bicarb), Neutralize® (NE), Desensibilize® (DES), catalase C-40 at 10 mg/mL (CAT), 10% alcohol solution of alpha-tocopherol (VitE), Listerine® (LIS), 0.12% chlorhexidine (CHX), Croton Lechleri (CL), 10 % aqueous solution of Uncaria Tomentosa (UT), artificial saliva (ArtS) and 0.05% sodium fluoride (NaF) was assessed in triplicate by 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) free radical assay. All substances exhibited antioxidant activity, except for CL. AAcidS, AAcidG and VitE exhibited the highest AA% (p<0.05). On the contrary, CHX, NE, LIS and NaF showed the lowest AA% (p<0.05). In conclusion, AAcidS, AAcidG, SodAsS, SodAsG and VitE presented the highest antioxidant activity among substances tested in this study. The DPPH assay provides an easy and rapid way to evaluate potential antioxidants.
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Souza-Gabriel AE, Vitussi LOC, Milani C, Alfredo E, Messias DCF, Silva-Sousa YTC. Effect of bleaching protocols with 38% hydrogen peroxide and post-bleaching times on dentin bond strength. Braz Dent J 2011; 22:317-21. [DOI: 10.1590/s0103-64402011000400010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 05/10/2011] [Indexed: 11/22/2022] Open
Abstract
This study assessed the effect of bleaching protocols with 38% hydrogen peroxide (HP) and post-bleaching times on shear bond strength of a composite resin to dentin. One-hundred slabs of intracoronary dentin were included and randomly assigned into 2 groups according to the bleaching protocol: HP (2 applications of 10 min each) and HP activated by LED laser (2 applications of 10 min each/45 s of light activation). Groups were subdivided according to the post-bleaching time (n=10): 1 day, 3 days, 7 days, 10 days and 14 days. The control group was unbleached and restored (n=10). The specimens were restored with Single Bond adhesive system/Filtek Z250 resin using a polytetrafluorethylene matrix and were submitted to the shear bond strength testa after 24 h,. Data were analyzed by ANOVA and Tukey's test (α=0.05). Unbleached group (0.283 ± 0.134) had the highest bond strength and was statistically similar (p>0.05) to HP/10 days (0.278 ± 0.064), HP + LED laser/10 days (0.280 ± 0.078), HP/14 days (0.281 ± 0.104), HP + LED laser/14 days (0.277 ± 0.093). Lower bond strength were verified in HP/1 day (0.082 ± 0.012), HP/3 days (0.079 ± 0.013), HP + LED laser/1 day (0.073 ± 0.018) and HP + LED laser/3 days (0.080 ± 0.015), which were statistically similar (p>0.05). HP/7 days (0.184 ± 0.154) and HP + LED laser/7 days (0.169 ± 0.102) had intermediate values (p<0.05). The restorative procedure of intracoronary dentin bleached with 38% HP with or without the use of light source should be performed after at least 10 days after the bleaching treatment.
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