1
|
Marcomini N, Albaricci MCDC, Costa JLDSG, Besegato JF, Godoy EF, Dantas AAR, Kuga MC. Effects of alpha-tocopherol antioxidant on fracture strength and adhesion of endodontically treated teeth restored after dental bleaching. Eur J Oral Sci 2024; 132:e12965. [PMID: 38115770 DOI: 10.1111/eos.12965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 11/14/2023] [Indexed: 12/21/2023]
Abstract
This study evaluated the effect of different concentrations of alpha-tocopherol in gel form on fracture strength, hybrid layer formation, and microtensile bond strength of endodontically treated teeth bleached with 40% hydrogen peroxide (H2 O2 ). Sixty bovine incisors were randomized into one of six groups (n = 10 incisors per group) defined by the interventions carried out after endodontic treatment. In the control group, no additional intervention was carried out, while all teeth in the five intervention groups were bleached with 40% H2 O2 and subsequently treated with alpha-tocopherol at concentrations of 15% (15AT), 20% (20AT), or 25% (25AT), with 10% sodium ascorbate (10SA), or with nothing (40HP). Fracture strength was evaluated in a mechanical testing machine, hybrid layer formation was assessed using scanning electron microscopy, and bond strength was determined using microtensile bond-strength testing. Data were analyzed using Kruskal-Wallis and Dunn's tests. No statistically significant difference regarding fracture strength was observed among groups. Hybrid layer formation was greater in the 15AT group than in groups 40HP and 10SA. Teeth in groups 15AT, 20AT, and 25AT demonstrated higher bond strength than teeth in groups 40HP and 10SA. Alpha-tocopherol, preferably at 15%, effectively reverses the deleterious effects, of bleaching, on hybrid layer formation and bond strength to dentin.
Collapse
Affiliation(s)
- Natália Marcomini
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Maria Carolina da Costa Albaricci
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
- Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - João Felipe Besegato
- School of Dentistry, Federal University of Mato Grosso do Sul - UFMS, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Andréa Abi Rached Dantas
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| |
Collapse
|
2
|
Haralur SB, Al-Ibrahim RM, Al-Shahrani FA, Al-Qahtani RA, Chaturvedi S, Alqahtani NM. Efficacy of organic and antioxidant agents to regain bond strength to bleached enamel in different dental adhesive solvents. J Appl Biomater Funct Mater 2023; 21:22808000231198807. [PMID: 38018370 DOI: 10.1177/22808000231198807] [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: 11/30/2023] Open
Abstract
Materials like carbamide peroxide or hydrogen peroxide are commonly used for vital teeth bleaching. However, there have been concerns regarding their effect on composite-to-bleached enamel bonding strength. The study investigated the impact of organic and antioxidant agents on composite bond strength in bleached enamel with different dental adhesive solvents. Human third molar teeth were sectioned into buccal and lingual halves. The two main adhesive solvent groups evaluated were acetone and alcohol. Each main group was divided into six groups. The positive control group received no bleaching, the negative control group consisted of bleaching with no surface deoxidization; and other experimental categories involved post-bleach treatments with 95% ethanol, sodium ascorbate (10%), acetone solution, or sodium fluoride solution (1.1%). Following the surface treatment and enamel bonding procedure, nano-hybrid composite cylinders measuring 3 × 2 mm were directly cured over the bleached enamel substrate. The shear bond test was performed after 24-h storage and 12,000 thermocycles on a universal testing machine. In this study, one-way ANOVA was used along with Tukey's HSD tests at a significance level of 0.05. The negative control groups showed significantly lower bond strength than the positive control group. Ethanol surface treatment had superior mean bonding strength in acetone and alcohol-based adhesive solvent groups. The utilization of sodium ascorbate for surface treatment resulted in a significant enhancement of adhesion between the composite material and bleached enamel surface. Sodium fluoride application showed no significant recovery in shear bond strength in both dental adhesive groups. It was concluded that hydrogen peroxide severely compromised the immediate bond strength of composite resin. Surface treatment of bleached enamel with ethanol, sodium ascorbate, and acetone solutions is an effective option for restoring bond strength.
Collapse
Affiliation(s)
- Satheesh B Haralur
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | | | | | | | - Saurabh Chaturvedi
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Naseer M Alqahtani
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| |
Collapse
|
3
|
Kahler B. Present status and future directions - Managing discoloured teeth. Int Endod J 2022; 55 Suppl 4:922-950. [PMID: 35188275 PMCID: PMC9790475 DOI: 10.1111/iej.13711] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 12/30/2022]
Abstract
Managing tooth discolouration involves a range of different protocols for clinicians and patients in order to achieve an aesthetic result. There is an increasing public awareness in the appearance of their teeth and management of tooth discolouration may be inter-disciplinary and involve both vital and nonvital teeth. Vital teeth can be easily treated with low concentration hydrogen peroxide products safely and effectively using an external approach and trays. For endodontically treated teeth, the walking bleach technique with hydrogen releasing peroxide products is popular. However, there is an association with external cervical root resorption with higher concentrations of hydrogen peroxide of 30%-35%. There are also regulatory considerations for the use of hydrogen peroxide in certain jurisdictions internationally. Prosthodontic treatments are more invasive and involve loss of tooth structure as well as a life cycle of further treatment in the future. This narrative review is based on searches on PubMed and the Cochrane library. Bleaching endodontically treated teeth can be considered a safe and effective protocol in the management of discoloured teeth. However, the association between bleaching and resorption remains unclear although there is likely to be a relation to prior trauma. It is prudent to avoid thermocatalytic approaches and to use a base/sealer to cover the root filling. An awareness expectations of patients and multidisciplinary treatment considerations is important in achieving the aesthetic result for the patient. It is likely that there will be an increasing demand for aesthetic whitening treatments. Bleaching of teeth has also become increasingly regulated although there are international differences in the use and concentration of bleaching agents.
Collapse
Affiliation(s)
- Bill Kahler
- School of DentistryThe University of QueenslandBrisbaneQueenslandAustralia,The University of Queensland Oral Health CentreHerstonQueenslandAustralia
| |
Collapse
|
4
|
Moradian M, Saadat M, S. Shiri MH, Sohrabniya F. Comparative evaluation of the postbleaching application of sodium ascorbate, alpha-tocopherol, and quercetin on shear bond strength of composite resin to enamel. Clin Exp Dent Res 2022; 8:1598-1604. [PMID: 36106470 PMCID: PMC9760164 DOI: 10.1002/cre2.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/05/2022] [Accepted: 08/18/2022] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVE This study aimed to evaluate and compare the impacts of the postbleaching application of sodium ascorbate, alpha-tocopherol, and quercetin on the shear bond strength (SBS) of composite resin. MATERIAL AND METHODS 60 extracted intact maxillary first premolars were collected and were randomly divided into five experimental groups as follows (n=12): Group A (negative control): no bleaching, Group B (positive control): bleaching with 40% hydrogen peroxide (HP), Group C: HP±10% sodium ascorbate for 10min, Group D: HP±10% alpha-tocopherol for 10min, and Group E: HP±1% quercetin for 10min. Composite bonding was done immediately after bleaching for Groups B-E and without any treatment for Group A. After being stored in distilled water at room temperature for 24h, all specimens were tested for SBS in the universal testing machine. One-way analysis of variance and Tukey's post-hoc test were used to analyze the SBS values of all groups. RESULTS The results showed that the bonding of composite to the unbleached group exhibited the highest mean value of SBS (22.68±2.91MPa). Among the antioxidant-treated groups, the highest SBS value was detected in quercetin-treated specimens (15.45±1.58MPa), which was significantly different from the positive control group (p<.05). CONCLUSION It could be concluded that 10% quercetin applied for 10min increased the bond strength to bleached enamel, but it was not able to reverse it completely.
Collapse
Affiliation(s)
- Marzieh Moradian
- Department of Operative Dentistry, Oral and Dental Disease Research Center, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Maryam Saadat
- Department of Operative Dentistry, Oral and Dental Disease Research Center, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Mohammad Hossein S. Shiri
- Student Research Committee, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Fatemeh Sohrabniya
- Student Research Committee, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| |
Collapse
|
5
|
Srivastava M, Yeluri R. The effect of 10% alpha-tocopherol solution and 5% grape seed extract on the microhardness and shear bond strength to bleached dentin. Dent Res J (Isfahan) 2021; 18:54. [PMID: 34497689 PMCID: PMC8404561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 10/02/2020] [Accepted: 01/23/2021] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND The aim of the study was to evaluate the effect of 10% alpha-tocopherol and 5% grape seed extract on the microhardness and shear bond strength (SBS) to bleached human dentin. MATERIALS AND METHODS This in vitro study was done on 200 extracted premolars which were decoronated and grinded to get flat dentin surface occlusaly. They were divided into four groups: (a) bleaching, (b) bleaching and application of alpha-tocopherol, (c) bleaching and application of grape seed extract, and (d) control. Groups were further subdivided into Subgroups I and II (n = 30) based on storage period before building with composite and were then tested for microhardness and SBS determination. The data thus obtained was subjected to statistical analysis which was performed using ANOVA test and post hoc Tukey's test. The significance for the entire statistical test was predetermined at P < 0.05. RESULTS The results showed that the microhardness values were minimum in Group A (immediately after bleaching) and maximum in control group. Comparison of data using one-way ANOVA showed that the P value was highly significant (P < 0.001) among the groups. The intergroup comparison of SBS using post hoc Tukey's tests revealed that the P value was significant (P < 0.05) when the comparison was done between the Group A and Group C and Group B with Group D immediately after bleaching. CONCLUSION Adverse effects of bleaching can be reversed with the application of 10% alpha-tocopherol and 5% grape seed extract over the dentinal surface microhardness and SBS.
Collapse
Affiliation(s)
- Manvi Srivastava
- Department of Pedodontics and Preventive Dentistry, K.D. Dental College and Hospital, Mathura, Uttar Pradesh, India,Address for correspondence: Dr. Manvi Srivastava, Department of Pedodontics and Preventive Dentistry, K.D. Dental College and Hospital, Mathura, Uttar Pradesh, India. E-mail:
| | - Ramakrishna Yeluri
- Department of Pedodontics and Preventive Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| |
Collapse
|
6
|
Olmedo DERP, Kury M, Resende BA, Cavalli V. Use of antioxidants to restore bond strength after tooth bleaching with peroxides. Eur J Oral Sci 2021; 129:e12773. [PMID: 33724583 DOI: 10.1111/eos.12773] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 11/09/2020] [Accepted: 01/14/2021] [Indexed: 11/29/2022]
Abstract
This review compiles the literature on the antioxidants used after tooth bleaching with either low or high-concentrated carbamide and hydrogen peroxide to recover the bond strength. Antioxidants used in bleached teeth are mainly natural and non-enzymatic, except for catalase. Commonly, antioxidants are applied to remove any reactive oxygen species (ROS) residues left from bleaching gels, which adversely affect adhesive procedures, such as restorations or orthodontic brackets bonding. Even though sodium ascorbate, the most thoroughly investigated antioxidant, showed the most efficient bond strength recovery at 10% concentration, its performance depends on the type of solution and the application time. Natural extracts, such as proanthocyanidins and green tea, showed satisfactory results in the reversal of bond strength at 5% and 10% concentrations, respectively. Sodium ascorbyl phosphate, α-tocopherol, and catalase exhibited promising results, but further research is required. The adhesive system type plays an important role in the outcome of enamel bond strength after the antioxidant application. The postponement of either restorations or orthodontic brackets cementation following bleaching procedures seems to be efficiently replaced by antioxidant application prior to bonding procedures. However, the efficacy of using an antioxidant to recover bond strength depends on its type and application time.
Collapse
Affiliation(s)
- Dorcas E R P Olmedo
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Matheus Kury
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Bruna A Resende
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Vanessa Cavalli
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| |
Collapse
|
7
|
Srivastava M, Yeluri R. The effect of 10% alpha-tocopherol solution and 5% grape seed extract on the microhardness and shear bond strength to bleached dentin. Dent Res J (Isfahan) 2021. [DOI: 10.4103/1735-3327.321865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
8
|
Zhang H, Shao S, Du A, Wang Y, Cheng B, Zhang Z. Comparative Evaluation of Two Antioxidants on Reversing the Immediate Bond Strength of Bleached Enamel: In Vitro Study. Med Sci Monit 2020; 26:e920481. [PMID: 32086431 PMCID: PMC7051100 DOI: 10.12659/msm.920481] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Tooth bleaching causes a significant decrease in the bonding strength between the resin and human enamel. Nevertheless, the effects of different antioxidant types on the immediate bonding strength of resin and bleached enamel were significantly different. Therefore, the objective of this study was to compare the effects of 2 antioxidants for enhancing the bond strength of the resin to bleached enamel. Material/Methods There were 48 enamel blocks performed from 48 recently extracted maxillary central incisors. There were 8 groups: NC (negative control, no bleached specimens restored without antioxidants); NA (no antioxidant, bleached specimens bonded immediately without any antioxidants); SA30, SA60, and SA120 (bleached specimens accepted the management of 10% sodium ascorbate (SA) for 30 minutes, 60 minutes, and 120 minutes, respectively, before restored); PC30, PC60, and PC120 (bleached specimens received treatment of 5% proanthocyanidins (PC) for 30 minutes, 60 minutes, and 120 minutes, respectively, before restored). We measured the micro-tensile bond strength of specimens and used 2-way ANOVA to analyze the data. Results The mean±standard deviation bond strength measured were: NC, 29.99±4.00; NA, 14.90±1.97; SA30, 18.60±2.20; SA60, 22.57±2.71; SA120, 26.15±3.85; PC30, 16.78±2.29; PC60, 19.13±2.24, PC120, 23.90±2.01 MPa. In addition, the fracture types were mainly of an adhesive mode (88.75%), followed by mixed (7.5%), and cohesive (3.75%). Conclusions 10% sodium ascorbate provided a comparatively more promising improvement for immediate bond strength than 5% proanthocyanidins when the same duration of antioxidant was applied.
Collapse
Affiliation(s)
- Hong Zhang
- School and Hospital of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Siqi Shao
- Shenzhen Stomatology Hospital, Shenzhen, Guangdong, China (mainland)
| | - Aobo Du
- School and Hospital of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Ying Wang
- School and Hospital of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Boqun Cheng
- School and Hospital of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Zhimin Zhang
- School and Hospital of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| |
Collapse
|
9
|
Scribante A, Poggio C, Gallo S, Riva P, Cuocci A, Carbone M, Arciola CR, Colombo M. In Vitro Re-Hardening of Bleached Enamel Using Mineralizing Pastes: Toward Preventing Bacterial Colonization. MATERIALS 2020; 13:ma13040818. [PMID: 32054090 PMCID: PMC7079603 DOI: 10.3390/ma13040818] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/30/2020] [Accepted: 02/07/2020] [Indexed: 12/14/2022]
Abstract
The search for materials able to remineralize human hard tissues is a modern medical challenge. In this study, the protective effect on the enamel microhardness by a paste based on hydroxyapatite and sodium fluoride (Remin Pro) was evaluated after two different enamel bleaching procedures. Forty sound human incisors were randomly assigned to different treatments: bleaching with an in-office agent (Perfect Bleach Office+); bleaching with an at-home agent (Perfect Bleach); bleaching with the in-office agent followed by the prophylaxis paste; bleaching with the at-home agent followed by the prophylaxis paste; no treatment (control). Bleaching was performed at 0, 8, 24 and 32 h, followed by a 3-min re-mineralizing treatment in the subgroups designed to receive it. Specimens underwent a micro-hardness tester and a mean Vickers Hardness number was considered for each specimen. ANOVA exhibited significant differences among groups. Post-hoc Tukey testing showed significant micro-hardness decrease after the application of both the two bleaching agents. The treatment with prophylaxis paste significantly increased the micro-hardness values of bleached enamel.
Collapse
Affiliation(s)
- Andrea Scribante
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
| | - Claudio Poggio
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
- Correspondence: (C.P.); (S.G.); (C.R.A.)
| | - Simone Gallo
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
- Correspondence: (C.P.); (S.G.); (C.R.A.)
| | - Paolo Riva
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
| | - Antonella Cuocci
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
| | - Manuel Carbone
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
| | - Carla Renata Arciola
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, via San Giacomo 14, 40126 Bologna, Italy
- Correspondence: (C.P.); (S.G.); (C.R.A.)
| | - Marco Colombo
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences-Section of Dentistry, University of Pavia, 27100 Pavia, Italy; (A.S.); (P.R.); (A.C.); (M.C.)
| |
Collapse
|
10
|
Nagi SM, Hassan SN, Abd El-Alim SH, Elmissiry MM. Remineralization potential of grape seed extract hydrogels on bleached enamel compared to fluoride gel: An in vitro study. J Clin Exp Dent 2019; 11:e401-e407. [PMID: 31275511 PMCID: PMC6599700 DOI: 10.4317/jced.55556] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 04/01/2019] [Indexed: 11/17/2022] Open
Abstract
Background Remineralizing of bleached enamel is a common procedure that aims to compensate enamel mineral lose. This study aimed to evaluate the remineralization effectiveness of experimentally prepared grape seed extract hydrogels (GSE) compared to fluoride gel on bleached enamel. Material and Methods Thirty extracted maxillary incisor were bleached using white smile bleaching agent. Bleached specimens were divided into three groups (10/group) according to the remineralizing agents tested: [GSE 6%, GSE 10%, or fluoride gel]. After bleaching and remineralization procedure, the specimens were stored in artificial saliva at 37°C. Micro-hardness and Energy-Dispersive X-ray and ultra-morphological evaluation were tested at baseline, after bleaching and after remineralization. Results Statistical significant decrease on mean micro-hardness values had resulted after bleaching procedure compared to baseline, followed by a significant increase in GSE (10%) and fluoride groups. GSE (6%) application showed the least statistical significant mean micro-hardness, which was statistically insignificant different compared to bleaching procedure. Elemental analysis results revealed a statistical significant decrease on Ca, and Ca/P ratios (At%) values after bleaching compared to baseline, followed by a significant increase after treatment with all tested remineralizing gels. SEM photomicrograph of sound enamel shows smooth uniform appearance with few pores. Bleached enamel showed irregular pitted disorganized enamel surface. Bleached enamel exposed to GSE and fluoride gel showed occlusion of enamel surface porosities and precipitates of different sizes. Conclusions The specially prepared GSE hydrogels has positive effects on the remineralization process of bleached enamel making it an effective natural agent with remineralizing potential. Key words:Remineralization, bleaching, grape seed extract, fluoride, enamel.
Collapse
Affiliation(s)
- Shaymaa M Nagi
- Assistant Researcher Professor in Restorative and Dental Materials Department, Oral and Dental Research division, National Research Centre, Egypt
| | - Shahinaz N Hassan
- Researcher in Restorative and Dental Materials Department, Oral and Dental Research division, National Research Centre, Egypt
| | - Sameh H Abd El-Alim
- Assistant Researcher Professor in Pharmaceutical Technology Department, Pharmaceutical Industries Research Division, National Research Centre, Giza, Egypt
| | - Mostafa M Elmissiry
- Researcher Professor in Phytochemistry Department, Pharmaceutical Industries Research Division, National Research centre, Giza, Egypt
| |
Collapse
|
11
|
Nari-Ratih D, Widyastuti A. Effect of antioxidants on the shear bond strength of composite resin to enamel following extra-coronal bleaching. J Clin Exp Dent 2019; 11:e126-e132. [PMID: 30805116 PMCID: PMC6383909 DOI: 10.4317/jced.55359] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/21/2019] [Indexed: 11/18/2022] Open
Abstract
Background Recently patients need faster treatments, and delaying restoration is not possible following bleaching treatment. The purpose of this study was to determine the effect of antioxidants, namely 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extract on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Material and Methods Seventy premolars were randomly assigned into 7 groups of 10 each. Group 1: bleaching treatment and no antioxidants application. Group 2: composite was built-up immediately after bleaching. Group 3: bleached specimens received composite build-up delayed by 2 weeks. Group 4, 5, 6 and 7: bleached specimens received an application of 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea, and 10% Aloe vera before composite build-up. Specimens were immersed in artificial saliva, stored in an incubator 37°C (24 hours), thermocycling, and tested using a universal testing machine. Data were analyzed by one-way ANOVA and Tukey’s test with 95% level of significance. Results Bleaching caused significantly reduced shear bond strength (p<0.05), and application of 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera produced significantly greater shear bond strength compared to bleached group (P <0.05). However, no significant differences occurred between antioxidant groups (P >0.05). Conclusions Application of antioxidants increased the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extracts produced the same effect on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Key words:Antioxidants, shear bond strength, composite resin, extra-coronal bleaching.
Collapse
Affiliation(s)
- Diatri Nari-Ratih
- MDSc., MClinDent (Endodontist), Ph.D. Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Andina Widyastuti
- MClinDent (Endodontis). Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| |
Collapse
|
12
|
Atalayin C, Tezel H, Ergucu Z, Unlu N, Armagan G, Dagci T, Kose T. The improvement of biocompatibility of adhesives : The effects of resveratrol on biocompatibility and dentin micro-tensile bond strengths of self-etch adhesives. Clin Oral Investig 2018; 23:3213-3218. [PMID: 30415440 DOI: 10.1007/s00784-018-2745-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/06/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The aim of this in vitro study is to evaluate the effects of resveratrol (RES) addition on the cytotoxicity and microtensile bond strength (μTBS) of different adhesives. MATERIALS AND METHODS Five self-etching adhesives (G-aenial Bond-GC, Optibond All in One-Kerr, Gluma Self Etch-Kulzer, Clearfil S3 Bond-Kuraray, and Nova Compo-B Plus-Imicryl) were tested. They were applied to L-929 cell culture by the extract method. In the test groups, 0.5 μM RES (Sigma-Aldrich) was added into the medium. Cell viability was assessed by MTT assay after 24 h. Human extracted third molars were used for μTBS test (n = 7). The adhesives with or without 0.5 μM RES addition were applied on dentin surfaces. A composite build-up was constructed. Then, the specimens were sectioned into multiple beams with the non-trimming version of the microtensile test and subjected to microtensile forces. Statistical analysis was performed using ANOVA and post hoc Tukey test (p ˂ 0.05). RESULTS The extracts of all adhesives decreased the cell viability. However, RES addition increased the cell viability in all groups (p ˂ 0.05). RES addition did not cause any decrease in μTBS values of the adhesives compared to baseline. Optibond All in One showed the highest μTBS after RES addition. It was followed by Clerafil S3 Bond and Nova Compo-B Plus. No difference was determined between the Optibond All in One and Clearfil S3 Bond. There was difference between Optibond All in One and Nova Compo-B Plus (p ˂ 0.05). CONCLUSION RES addition may improve the biocompatibility without causing negative influence on μTBS of the adhesives. CLINICAL RELEVANCE RES addition has clinical applicable potential to overcome the adverse biocompatibility of adhesives.
Collapse
Affiliation(s)
- Cigdem Atalayin
- Department of Restorative Dentistry, Ege University School of Dentistry, 35100, Izmir, Turkey.
| | - Huseyin Tezel
- Department of Restorative Dentistry, Ege University School of Dentistry, 35100, Izmir, Turkey
| | - Zeynep Ergucu
- Department of Restorative Dentistry, Ege University School of Dentistry, 35100, Izmir, Turkey
| | - Nimet Unlu
- Department of Restorative Dentistry, Selcuk University School of Dentistry, Konya, Turkey
| | - Guliz Armagan
- Department of Biochemistry, Ege University Faculty of Pharmacy, Izmir, Turkey
| | - Taner Dagci
- Department of Physiology, Ege University School of Medicine, Izmir, Turkey
| | - Timur Kose
- Department of Biostatistics and Medical Informatics, Ege University School of Medicine, Izmir, Turkey
| |
Collapse
|
13
|
Cortez TV, Ziotti IR, Scatolin RS, Milori Corona SA, Souza-Gabriel AE. Protocols for sodium ascorbate application on intracoronary dentin bleached with high-concentrated agent. JOURNAL OF CONSERVATIVE DENTISTRY : JCD 2018; 21:26-31. [PMID: 29628643 PMCID: PMC5852931 DOI: 10.4103/jcd.jcd_80_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose: Composite resin restorations are normally replaced after the internal bleaching of endodontically treated-teeth because the bleaching agent does not alter the color of the restorative material. This study evaluated the effect of 10% sodium ascorbate (SA) applied at different protocols on bleached dentin. Materials and Methods: One-hundred slabs of intracoronary bovine dentin were divided into 5 groups: 2 controls-GI without bleaching (positive), GII bleached with 35% hydrogen peroxide (HP) (negative); and 3 experimentals – GIII. 35% HP + SA at protocol 1 (dripping, washing and drying the solution), GIV. 35% HP + SA at protocol 2 (dripping and aspirating the solution) and GV. 35% HP + SA at protocol 3 (dripping, rubbing and aspirating the solution). Sixty fragments were restored and subjected to shear bond strength test (n = 12). Forty fragments (n = 8) were prepared for chemical analysis (energy dispersive X-ray spectrometry) and surface morphology (scanning electron microscopy). Data were analyzed by ANOVA and Tukey test (P < 0.05). Results: GI (3.169 ± 1.510a) had the highest means values, similar to GIV (2.752 ± 0.961a) and GV (2.981 ± 1.185a) (P < 0.05). Inferior values were obtained in GII (1.472 ± 0.342b) and GIII (2.037 ± 0.742ab) had intermediate values (P > 0.05). Oxygen concentration was reduced in groups treated with SA, and the surface exhibited residual granules of the solution. Conclusion: The 10% SA solution reestablishes the bond strength of restorative material to bleached dentin, especially if active protocols of application and aspiration were used.
Collapse
Affiliation(s)
- Thiago Vinicius Cortez
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Isabella Rodrigues Ziotti
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Renata Siqueira Scatolin
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Silmara Aparecida Milori Corona
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Aline Evangelista Souza-Gabriel
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| |
Collapse
|
14
|
Cavalli V, Sebold M, Shinohara MS, Pereira PNR, Giannini M. Dentin bond strength and nanoleakage of the adhesive interface after intracoronal bleaching. Microsc Res Tech 2018; 81:428-436. [DOI: 10.1002/jemt.22995] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 12/18/2017] [Accepted: 01/06/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Vanessa Cavalli
- Department of Restorative Dentistry, Operative Dentistry Division, Piracicaba Dental School; University of Campinas; Bairro Areião, Piracicaba SP, 13414-018 Brazil
| | - Maicon Sebold
- Department of Restorative Dentistry, Operative Dentistry Division, Piracicaba Dental School; University of Campinas; Bairro Areião, Piracicaba SP, 13414-018 Brazil
| | - Mirela Sanae Shinohara
- Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School; University of Campinas; Bairro Areião, Piracicaba SP, 13414-018 Brazil
| | - Patrícia Nóbrega Rodrigues Pereira
- Department of Restorative Dental Sciences, Operative Dentistry Division, College of Dentistry; University of Florida; Gainesville Florida 32610
| | - Marcelo Giannini
- Department of Restorative Dentistry, Operative Dentistry Division, Piracicaba Dental School; University of Campinas; Bairro Areião, Piracicaba SP, 13414-018 Brazil
| |
Collapse
|
15
|
Kiomarsi N, Arjmand Y, Kharrazi Fard MJ, Chiniforush N. Effects of Erbium Family Laser on Shear Bond Strength of Composite to Dentin After Internal Bleaching. J Lasers Med Sci 2017; 9:58-62. [PMID: 29399313 DOI: 10.15171/jlms.2018.12] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: The aim of this study was to assess the effect of surface treatment with erbium: yttrium-aluminum-garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) lasers on shear bond strength of composite resin to recently bleached dentin. Methods: In this study, 40 extracted human premolars were selected. The teeth were cut 4 mm apical to the cusp tip and were randomly divided into four groups (n=10 in each group) for shear bond strength testing. For bleaching, 35% hydrogen peroxide (H2 o2 ) gel (Opalescence Endo, Ultradent, South Jordan, UT, USA) was applied to dentin surfaces of all specimens for 10 days. Before etching and bonding, in Er,Cr:YSGG and Er:YAG laser groups, dentin surfaces were irradiated with Er,Cr:YSGG and Er:YAG lasers, respectively. In Er,Cr:YSGG group, Er:YAG group and control group, composite restoration was performed immediately after bleaching while in common procedure group, composite restoration was performed after seven days. The teeth were then subjected to shear bond strength testing machine. The data were statistically analyzed using analysis of variance (ANOVA) and Tukey test. Results: The mean and standard deviation (SD) of shear bond strength was 4.3 ± 1.4 MPa for control group, 6.7 ± 2.0 Mpa for Er,Cr:YSGG group, 14.4 ± 3.7 Mpa for Er:YAG group and 19.4 ± 2.6 Mpa for common procedure group. Conclusion: The shear strength of composite to Er:YAG laser-treated bleached dentin was significantly higher than control group while significantly lower than common procedure.
Collapse
Affiliation(s)
- Nazanin Kiomarsi
- Department of Operative Dentistry, Dental faculty, Tehran University of Medical Sciences, International Campus, Tehran, Iran
| | - Yasaman Arjmand
- Tehran University of Medical Sciences, International Campus, Tehran, Iran
| | | | - Nasim Chiniforush
- Laser Research Center of Dentistry (LRCD), Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
16
|
Lima AF, Marques MR, Soares DG, Hebling J, Marchi GM, de Souza Costa CA. Antioxidant therapy enhances pulpal healing in bleached teeth. Restor Dent Endod 2016; 41:44-54. [PMID: 26877990 PMCID: PMC4751206 DOI: 10.5395/rde.2016.41.1.44] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/13/2015] [Indexed: 01/18/2023] Open
Abstract
Objectives The purpose of this study was to evaluate the histopathological effects of an antioxidant therapy on the pulp tissue of rat teeth exposed to a bleaching gel with 35% hydrogen peroxide. Materials and Methods Forty rats were subjected to oral ingestion by gavage of distilled water (DW) or ascorbic acid (AA) 90 min before the bleaching therapy. For the bleaching treatment, the agent was applied twice for 5 min each to buccal surfaces of the first right mandibular molars. Then, the animals were sacrificed at 6 hr, 24 hr, 3 day, or 7 day post-bleaching, and the teeth were processed for microscopic evaluation of the pulp tissue. Results At 6 hr, the pulp tissue showed moderate inflammatory reactions in all teeth of both groups. In the DW and AA groups, 100% and 80% of teeth exhibited pulp tissue with significant necrosis and intense tissue disorganization, respectively. At 24 hr, the AA-treated group demonstrated a greater regenerative capability than the DW group, with less intense inflammatory reaction and new odontoblast layer formation in 60% of the teeth. For up to the 7 day period, the areas of pulpal necrosis were replaced by viable connective tissue, and the dentin was underlined by differentiated odontoblast-like cells in most teeth of both groups. Conclusions A slight reduction in initial pulpal damage during post-bleaching was promoted by AA therapy. However, the pulp tissue of AA-treated animals featured faster regenerative potential over time.
Collapse
Affiliation(s)
- Adriano Fonseca Lima
- Dental Research Division, School of Dentistry, Paulista University, Sao Paulo, SP, Brazil
| | - Marcelo Rocha Marques
- Department of Morphology, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Diana Gabriela Soares
- Department of Physiology and Pathology, Araraquara School of Dentistry, University Estadual Paulista, Araraquara, SP, Brazil
| | - Josimeri Hebling
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Giselle Maria Marchi
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology, Araraquara School of Dentistry, University Estadual Paulista, Araraquara, SP, Brazil
| |
Collapse
|
17
|
JORDÃO-BASSO KCF, KUGA MC, DANTAS AAR, TONETTO MR, LIMA SNL, BANDÉCA MC. Effects of alpha-tocopherol on fracture resistance after endodontic treatment, bleaching and restoration. Braz Oral Res 2016; 30:S1806-83242016000100258. [DOI: 10.1590/1807-3107bor-2016.vol30.0069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 03/06/2016] [Indexed: 11/22/2022] Open
|
18
|
Resin Bonding of Self-Etch Adhesives to Bovine Dentin Bleached from Pulp Chamber. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1313586. [PMID: 27747220 PMCID: PMC5056244 DOI: 10.1155/2016/1313586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/30/2016] [Indexed: 11/21/2022]
Abstract
This study evaluated the microtensile bond strength (μTBS) of 1-step self-etch adhesives (1-SEAs) and 2-step self-etch adhesives (2-SEAs) to pulp chamber dentin immediately after bleaching with 2 types of common bleaching techniques. Pulp chamber dentin of bovine teeth was bleached using 30% hydrogen peroxide (H2O2) solution with quartz-tungsten-halogen light-curing unit (Group 1) and 3.5% H2O2-containing titanium dioxide (TiO2) (Pyrenees®) activated with 405-nm violet diode laser for 15 min (Group 2). Unbleached specimens were placed in distilled water for 15 min and used as controls. After treatment, dentin was bonded with resin composite using 1-SEA or 2-SEA and stored in water at 37°C for 24 h. Each specimen was sectioned and trimmed to an hourglass-shape and μTBS was measured. Fractured specimens were examined under a scanning electron microscope to determine fracture modes. All specimens in Group 1 failed before proper bonding tests. In Group 2, the μTBS of 2-SEA was significantly greater (with no failed specimens) than 1-SEA (where 21 out of 36 failed). These results indicate that 2-SEA is a better adhesive system than 1-SEA on bleached dentin. Our results also demonstrated that application of H2O2 significantly decreases bond strength of resin to dentin; however, in the case of nonvital tooth bleaching, Pyrenees® is a better alternative to the conventional 30% H2O2 bleaching.
Collapse
|