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Mendes TAD, Pascoal SCD, Estellita MCA, Lemos MVS, Santiago SL, Mendonça JS. Chemical analysis of n-propyl gallate used as pre-treatment for resin-dentin bond strength: In vitro study. Eur J Oral Sci 2024; 132:e12970. [PMID: 38173083 DOI: 10.1111/eos.12970] [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: 07/18/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
This study aimed to evaluate the effect of n-propyl gallate as pre-treatment for resin-dentin bond strength. The dentin pre-treatments evaluated included propyl gallate of concentrations 0.1% (w/v), 1.0% (w/v), and 10.0% (w/v), as well as glutaraldehyde 5.0% (v/v), and distilled water as a control treatment. Dentin specimens were prepared for Fourier Transformed Infrared Spectroscopy (FT-IR) (n = 3/pre-treatment). Pre-treatments were actively applied to dentin blocks before performing the adhesive procedure to composite resin. Microtensile bond strength to dentin (μTBS) (n = 8/pre-treatment) was determined after 24 h and 6 months of storage. Data were submitted to a two-way ANOVA, followed by Tukey's post hoc test. As for FT-IR, propyl gallate 1%-treated specimens presented higher water, carbonate, collagen, and amide absorbance rates compared to other tested groups, while specimens pre-treated with glutaraldehyde and distilled water presented similar absorbance curves. Regarding μTBS, all concentrations of propyl gallate resulted in statistically significant higher bond strength values than distilled water at 24 h. After 6 months of storage, propyl gallate 0.1% was the only group that maintained μTBS over time. Propyl gallate 0.1% might be a suitable dentinal pre-treatment due to being able to present chemical bonds with demineralized dentin and providing resin-dentin bond stability after 6 months of storage.
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Affiliation(s)
| | | | | | | | - Sérgio Lima Santiago
- Graduate Program in Dentistry, Federal University of Ceará (UFC), Fortaleza, Brazil
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Mancuso E, Durso D, Mazzitelli C, Maravic T, Josic U, D'alessandro C, Generali L, Checchi V, Breschi L, Mazzoni A. Glutaraldehyde-based desensitizers' influence on bonding performances and dentin enzymatic activity of universal adhesives. J Dent 2023; 136:104643. [PMID: 37524197 DOI: 10.1016/j.jdent.2023.104643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023] Open
Abstract
OBJECTIVES To evaluate the influence of two glutaraldehyde-based desensitizers (L: GLUMA Desensitizer, Heraeus Kulzer and G: GLUMA Desensitizer PowerGel) prior to the adhesive procedures on microtensile bond strength (µTBS) to dentin and endogenous enzymatic activity. METHODS Noncarious human third molars (N = 48) were cut to expose middle coronal dentin. Six experimental groups were formed according to the dentin pre-treatment (L or G) and the universal adhesives (IBU - iBond universal, Kulzer or AU - Adhese Universal, Ivoclar Vivadent) used in the self-etch mode (n = 8): 1) L/IBU; 2) G/IBU; 3) IBU; 4) L/AU; 5) G/AU; 6) AU. Specimens were cut into sticks and stressed until failure after 24 h (T0) or 1 yr of aging (T12). Additional 4 teeth were used for in situ zymography evaluation and data were statistically analyzed (α = 0.05). RESULTS Dentin pre-treatment, adhesive and aging statistically influenced bond strength and enzymatic activity (P<0.001). AU demonstrated higher bond strength values than IBU (P<0.001). The L resulted in higher bond strength compared to the G and control groups (P<0.001). aging statistically influenced bonding performance, especially when no dentin pre-treatment was performed (P<0.001). In situ zymography revealed that at baseline the control groups exhibited lower interfacial fluorescence compared to the experimental groups, irrespective of the adhesive used (P<0,001). However, after 1 yr of artificial storage, no differences were found among the groups (P>0.05). CONCLUSIONS Glutharldeadeyde-based products increased bond strength and determined a stabilization of the adhesive interface over time apparently not related to the MMPs inhibition. CLINICAL SIGNIFICANCE The results of this in vitro study suggest that the application of glutaraldehyde-based desensitizers prior to the adhesive procedures when associated with universal adhesives could result in increased bond strength and stabilization of the adhesive interface over time.
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Affiliation(s)
- Edoardo Mancuso
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Diego Durso
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Claudia Mazzitelli
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Tatjana Maravic
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Uros Josic
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Carlo D'alessandro
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
| | - Luigi Generali
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, Unit of Dentistry and Oral-Maxillo-Facial Surgery, University of Modena and Reggio Emilia, Italy
| | - Vittorio Checchi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, Unit of Dentistry and Oral-Maxillo-Facial Surgery, University of Modena and Reggio Emilia, Italy
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy.
| | - Annalisa Mazzoni
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna, Alma Mater Studiorum, Via San Vitale 59, Bologna 40125, Italy
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Shafiei F, Dehghani Z, Tavangar MS. Effect of natural antioxidants on bond strength recovery of resin-modified glass ionomers to the NaOCl-affected pulp chamber dentin. Clin Exp Dent Res 2023; 9:258-262. [PMID: 36519273 PMCID: PMC9932246 DOI: 10.1002/cre2.697] [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: 08/16/2022] [Revised: 11/11/2022] [Accepted: 11/18/2022] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE This study evaluated the effect of two natural antioxidants on the compromised bond strength of a resin-modified glass ionomer (RMGI) to the sodium hypochlorite (NaOCl)-affected pulp chamber dentin. METHODS Forty-two sound third molars were split into halves. The exposed pulp chamber dentin was ground to provide the flat dentin surfaces and divided into seven groups (n = 12), according to the solutions used for immersion: (1) Control, distilled water; (2) NaOCl, 5.25% NaOCl for 20 min; (3) NaOCl/Ethylenediaminetetraacetic acid (EDTA); 5.25% NaOCl for 20 min + 17% EDTA for 1 min; (4) NaOCl/TA, 5.25% NaOCl + 10% tanic acid (TA) for 5 min; (5) NaOCl/EDTA/TA, 5.25% NaOCl + 17% EDTA + 10% TA for 5 min; (6) NaOCl/PA, 5.25% NaOCl+ 10% proanthocyanidin for 5 min; and (7) NaOCl/EDTA/PA, 5.25% NaOCl+ 17% EDTA + 10% PA for 5 min. The RMGI was bonded on the treated dentin using a Tygon tube. After 24 h of storage, microshear bond strength (µSBS) was tested. Data in MPa were submitted to one-way analysis of variance and Tamhane test. RESULTS NaOCl significantly decreased the µSBS; NaOCl/EDTA and NaOCl/TA significantly increased the µSBS, higher than the control group (p < .05); and in the NaOCl/EDTA/TA group, the increased bond strength was at the level of the control group (p > .05). NaOCl/PA and NaOCl/EDTA/PA and NaOCl groups had comparable µSBS. CONCLUSION TA could be suggested to provide effective bonding of RMGI and immediate sealing of the pulp chamber dentin after NaOCl irrigation.
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Affiliation(s)
- Fereshteh Shafiei
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Zahra Dehghani
- Students' Research CommitteeShiraz University of Medical SciencesShirazIran
- Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
| | - Maryam S. Tavangar
- Oral and Dental Disease Research Center, Department of Operative Dentistry, School of DentistryShiraz University of Medical SciencesShirazIran
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Chiang YT, Xiao YB, Hsu SH, Chang SW, Chou CC. Molecular interactions of tannic acid and matrix metalloproteinases 2 and 9. Comput Struct Biotechnol J 2023; 21:2792-2800. [PMID: 37181658 PMCID: PMC10172635 DOI: 10.1016/j.csbj.2023.04.011] [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: 11/08/2022] [Revised: 04/13/2023] [Accepted: 04/13/2023] [Indexed: 05/16/2023] Open
Abstract
Tannic acid (TA) has antibacterial, antioxidant, and anti-inflammatory properties and acts as an adhesive, hemostatic, and crosslinking agent in hydrogels. Matrix metalloproteinases (MMPs), a family of endopeptidase enzymes, play important roles in tissue remodeling and wound healing. TA has been reported to inhibit MMP-2/- 9 activities, thereby improving both tissue remodeling and wound healing. However, the mechanism of interaction of TA with MMP-2 and MMP-9 has not been fully elucidated. In this study, the full atomistic modeling approach was applied to explore the mechanisms and structures of TA binding with MMP-2 and MMP-9. Macromolecular models of the TA-MMP-2/- 9 complex were built by docking based on experimentally resolved MMP structures, and further equilibrium processes were examined by molecular dynamics (MD) simulations to investigate the binding mechanism and structural dynamics of the TA-MMP-2/- 9 complexes. The molecular interactions between TA and MMPs, including H-bond formation and hydrophobic and electrostatic interactions, were analyzed and decoupled to elucidate the dominant factors in TA-MMP binding. TA binds to MMPs mainly at two binding regions, residues 163-164 and 220-223 in MMP-2 and residues 179-190 and 228-248 in MMP-9. Two arms of TA participate in binding MMP-2 with 3.61 hydrogen bonds. On the other hand, TA binds MMP-9 with a distinct configuration involving four arms with 4.75 hydrogen bonds, resulting in a tighter binding conformation. Understanding the binding mechanism and structural dynamics of TA with these two MMPs provides crucial and fundamental knowledge regarding the inhibitory and stabilizing effects of TA on MMPs.
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Affiliation(s)
- Ya-Tang Chiang
- Institute of Polymer Science and Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
| | - Yu-Bai Xiao
- Department of Civil Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
| | - Shan-hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
- Corresponding authors.
| | - Shu-Wei Chang
- Department of Civil Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
- Department of Biomedical Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
- Corresponding author at: Department of Civil Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan.
| | - Chia-Ching Chou
- Institute of Applied Mechanics, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Section 4, 10617 Taipei, Taiwan
- Corresponding authors.
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Wang Q, Luan J, Zhao Z, Kong W, Zhang C, Ding J. Dentin-desensitizing biomaterials. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Greiffer L, Liebau E, Herrmann FC, Spiegler V. Condensed tannins act as anthelmintics by increasing the rigidity of the nematode cuticle. Sci Rep 2022; 12:18850. [PMID: 36344622 PMCID: PMC9640668 DOI: 10.1038/s41598-022-23566-2] [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: 09/02/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
Tannins and tanniferous plant extracts have been discussed as sustainable means for helminth control in the past two decades in response to a dramatic increase of resistances towards standard anthelmintics. While their bioactivities have been broadly investigated in vitro and in vivo, less is known about their mode of action in nematodes, apart from their protein binding properties. In the current study we therefore investigated the impact of a phytochemically well characterized plant extract from Combretum mucronatum, known to contain procyanidins as the active compounds, on the model organism Caenorhabditis elegans. By different microscopic techniques, the cuticle was identified as the main binding site for tannins, whereas underlying tissues did not seem to be affected. In addition to disruptions of the cuticle structure, molting defects occurred at all larval stages. Finally, an increased rigidity of the nematodes' cuticle due to binding of tannins was confirmed by force spectroscopic measurements. This could be a key finding to explain several anthelmintic activities reported for tannins, especially impairment of molting or exsheathment as well as locomotion.
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Affiliation(s)
- Luise Greiffer
- grid.5949.10000 0001 2172 9288Institute for Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Eva Liebau
- grid.5949.10000 0001 2172 9288Institute of Integrative Cell Biology and Physiology, University of Münster, Münster, Germany
| | - Fabian C. Herrmann
- grid.5949.10000 0001 2172 9288Institute for Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Verena Spiegler
- grid.5949.10000 0001 2172 9288Institute for Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
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Hardan L, Daood U, Bourgi R, Cuevas-Suárez CE, Devoto W, Zarow M, Jakubowicz N, Zamarripa-Calderón JE, Radwanski M, Orsini G, Lukomska-Szymanska M. Effect of Collagen Crosslinkers on Dentin Bond Strength of Adhesive Systems: A Systematic Review and Meta-Analysis. Cells 2022; 11:cells11152417. [PMID: 35954261 PMCID: PMC9368291 DOI: 10.3390/cells11152417] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 07/22/2022] [Accepted: 07/29/2022] [Indexed: 02/01/2023] Open
Abstract
This study aimed to identify the role of crosslinking agents in the resin–dentin bond strength (BS) when used as modifiers in adhesives or pretreatments to the dentin surface through a systematic review and meta-analysis. This paper was conducted according to the directions of the PRISMA 2020 statement. The research question of this review was: “Would the use of crosslinkers agents improve the BS of resin-based materials to dentin?” The literature search was conducted in the following databases: Embase, PubMed, Scielo, Scopus, and Web of Science. Manuscripts that reported the effect on the BS after the use of crosslinking agents were included. The meta-analyses were performed using Review Manager v5.4.1. The comparisons were performed by comparing the standardized mean difference between the BS values obtained using the crosslinker agent or the control group. The subgroup comparisons were performed based on the adhesive strategy used (total-etch or self-etch). The immediate and long-term data were analyzed separately. A total of 50 articles were included in the qualitative analysis, while 45 articles were considered for the quantitative analysis. The meta-analysis suggested that pretreatment with epigallocatechin-3-gallate (EGCG), carbodiimide, ethylenediaminetetraacetic acid (EDTA), glutaraldehyde, and riboflavin crosslinking agents improved the long-term BS of resin composites to dentin (p ≤ 0.02). On the other hand, the use of proanthocyanidins as a pretreatment improved both the immediate and long-term BS values (p ≤ 0.02). When incorporated within the adhesive formulation, only glutaraldehyde, riboflavin, and EGCG improved the long-term BS to dentin. It could be concluded that the application of different crosslinking agents such as carbodiimide, EDTA, glutaraldehyde, riboflavin, and EGCG improved the long-term BS of adhesive systems to dentin. This effect was observed when these crosslinkers were used as a separate step and when incorporated within the formulation of the adhesive system.
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Affiliation(s)
- Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon
| | - Umer Daood
- Clinical Dentistry, Restorative Division, Faculty of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia
| | - Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon
| | - Carlos Enrique Cuevas-Suárez
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Circuito Ex Hacienda La Concepción S/N, San Agustín Tlaxiaca 42160, Mexico
- Correspondence: (C.E.C.-S.); (M.L.-S.); Tel.: +52-(771)-72000 (C.E.C.-S.); +48-42-675-74-61 (M.L.-S.)
| | | | - Maciej Zarow
- “NZOZ SPS Dentist” Dental Clinic and Postgraduate Course Centre, pl. Inwalidow 7/5, 30-033 Cracow, Poland
| | - Natalia Jakubowicz
- “NZOZ SPS Dentist” Dental Clinic and Postgraduate Course Centre, pl. Inwalidow 7/5, 30-033 Cracow, Poland
| | - Juan Eliezer Zamarripa-Calderón
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Circuito Ex Hacienda La Concepción S/N, San Agustín Tlaxiaca 42160, Mexico
| | - Mateusz Radwanski
- Department of Endodontics, Chair of Conservative Dentistry and Endodontics, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
| | - Giovana Orsini
- Department of Clinical Sciences and Stomatology, School of Medicine, Polytechnic University of Marche, Via Tronto 10, 60126 Ancona, Italy
| | - Monika Lukomska-Szymanska
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
- Correspondence: (C.E.C.-S.); (M.L.-S.); Tel.: +52-(771)-72000 (C.E.C.-S.); +48-42-675-74-61 (M.L.-S.)
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Rey YCD, Palma-Dibb RG, França R, Paula-Silva FWG, Guedes DFC, Fiuza C, Fernandes ACBCJ, Faraoni JJ, Roselino LMR. Phosphoric acid containing proanthocyanidin enhances bond stability of resin/dentin interface. Braz Dent J 2022; 33:62-70. [PMID: 36043570 DOI: 10.1590/0103-6440202203941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 02/27/2021] [Indexed: 11/22/2022] Open
Abstract
Proanthocyanidin (PA) is a promising dentin biomodifier due to its ability to stabilize collagen fibrils against degradation by matrix metalloproteinases (MMPs); however, the most effective protocol to incorporate PA into bonding procedures is still unclear. This study evaluated the effect of dentin biomodification with a PA acid etchant on MMP activity, adhesive interface morphology and resin-dentin microtensile bond strength. Sound extracted human molars were flattened to expose dentin and acid-etched for 15 s according to the groups: EXP - experimental phosphoric acid; EXP+PA - experimental phosphoric acid 10% PA; TE - total-etching system; SE - self-etching system. Samples were restored with composite resin and stored in distilled water (37ºC). MMP activity and interface morphology were analyzed after 24 h by in situ zymography (n=6) and scanning electron microscopy (n=3), respectively. The resin-dentin microtensile bond strength (μTBS) was evaluated after 24 h and 6 months storage (n=6). Significantly higher MMP activity was detected in etched dentin compared with untreated dentin (p<0.05), but no difference among acid groups was found. Resin tags and microtags, indicative of proper adhesive system penetration in dentinal tubules and microtubules, were observed along the hybrid layer in all groups. There was no difference in μTBS between 24 h and 6 months for EXP+PA; moreover, it showed higher long-term μTBS compared with TE and EXP (p<0.05). The results suggest that 15 s of biomodification was not sufficient to significantly reduce MMP activity; nonetheless, EXP+PA was still able to improve resin-dentin bond stability compared with total- and self-etching commercial systems.
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Affiliation(s)
- Yumi C Del Rey
- Departmento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Regina G Palma-Dibb
- Departmento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Rodrigo França
- Department of Restorative Dentistry, Faculty of Dentistry, University of Manitoba, Winnipeg, MB, Canada
| | - Francisco W G Paula-Silva
- Departmento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Débora F C Guedes
- Departmento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Cristina Fiuza
- Department of Restorative Dentistry, Faculty of Dentistry, University of Manitoba, Winnipeg, MB, Canada
| | - Ana C B C J Fernandes
- Department of Oral Biology, Faculty of Dentistry, University of Manitoba, Winnipeg, MB, Canada
| | - Juliana J Faraoni
- Departmento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Lourenço M R Roselino
- Departmento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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Kulakowski D, Phansalkar RM, Leme-Kraus AA, McAlpine J, Chen SN, Pauli GF, Ravindran S, Bedran-Russo AK. Galloylated proanthocyanidins in dentin matrix exhibit biocompatibility and induce differentiation in dental stem cells. J BIOACT COMPAT POL 2022; 37:220-230. [PMID: 37465414 PMCID: PMC10353770 DOI: 10.1177/08839115221095154] [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: 07/20/2023]
Abstract
Aim Grape seed extract contains a complex mixture of proanthocyanidins (PACs), a plant biopolymer used as a biomaterial to improve reparative and preventive dental therapies. Co-polymerization of PACs with type I collagen mechanically reinforces the dentin extracellular matrix. This study assessed the biocompatibility of PACs from grape seed extract on dental pulp stem cells (DPSCs) in a model simulating leaching through dentin to the pulp cavity. The aim was to determine the type of PACs (galloylated vs. non-galloylated) within grape seed extract that are most compatible with dental pulp tissue. Methodology Human demineralized dentin was treated with selectively-enriched dimeric PACs prepared from grape seed extract using liquid-liquid chromatography. DPSCs were cultured within a 2D matrix and exposed to PAC-treated dentin extracellular matrix. Cell proliferation was measured using the MTS assay and expression of odontoblastic genes was analyzed by qRT-PCR. Categorization of PACs leaching from dentin was performed using HPLC-MS. Results Enriched dimeric fractions containing galloylated PACs increased the expression of certain odontoblastic genes in DPSCs, including Runt-related transcription factor 2 (RUNX2), vascular endothelial growth factor (VEGF), bone morphogenetic protein 2 (BMP2), basic fibroblast growth factor (FGF2), dentin sialophosphoprotein (DSPP) and collagen, type I, alpha 1 (COLI). Galloylated dimeric PACs also exhibited minor effects on DPSC proliferation, resulting in a decrease compared to control after five days of treatment. The non-galloylated dimer fraction had no effect on these genes or on DPSC proliferation. Conclusions Galloylated PACs are biocompatible with DPSCs and may exert a beneficial effect on cells within dental pulp tissue. The observed increase in odontoblastic genes induced by galloylated PACs together with a decrease in DPSC proliferation is suggestive of a shift toward cell differentiation. This data supports the use of dimeric PACs as a safe biomaterial, with galloylated dimeric PACs exhibiting potential benefits to odontoblasts supporting dentin regeneration.
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Affiliation(s)
- Daniel Kulakowski
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Rasika M. Phansalkar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Ariene A Leme-Kraus
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - James McAlpine
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Shao-Nong Chen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Guido F. Pauli
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Sriram Ravindran
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Ana K. Bedran-Russo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee, Wisconsin 53233, United States
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Kong W, Du Q, Qu Y, Shao C, Chen C, Sun J, Mao C, Tang R, Gu X. Tannic acid induces dentin biomineralization by crosslinking and surface modification. RSC Adv 2022; 12:3454-3464. [PMID: 35425384 PMCID: PMC8979257 DOI: 10.1039/d1ra07887a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/16/2022] [Indexed: 11/21/2022] Open
Abstract
It is currently known that crosslinking agents can effectively improve the mechanical properties of dentin by crosslinking type I collagen. However, few scholars have focused on the influence of crosslinking agents on the collagen-mineral interface after crosslinking. Analysis of the Fourier transform infrared spectroscopy (FTIR) results showed that hydrogen bonding occurs between the tannic acid (TA) molecule and the collagen. The crosslinking degree of TA to collagen reached a maximum 41.28 ± 1.52. This study used TA crosslinked collagen fibers to successfully induce dentin biomineralization, and the complete remineralization was achieved within 4 days. The crosslinking effect of TA can improve the mechanical properties and anti-enzyme properties of dentin. The elastic modulus (mean and standard deviation) and hardness values of the remineralized dentin pretreated with TA reached 19.1 ± 1.12 GPa and 0.68 ± 0.06 GPa, respectively, which were close to those of healthy dentin measurements, but significantly higher than those of dentin without crosslinking (8.91 ± 1.82 GPa and 0.16 ± 0.01 GPa). The interface energy between the surface of collagen fibers and minerals decreased from 10.59 mJ m-2 to 4.19 mJ m-2 with the influence of TA. The current work reveals the importance of tannic acid crosslinking for dentin remineralization while providing profound insights into the interfacial control of biomolecules in collagen mineralization.
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Affiliation(s)
- Weijing Kong
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University Hangzhou P. R. China
| | - Qiaolin Du
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou P. R. China
| | - Yinan Qu
- Real Dental Guangzhou P. R. China
| | - Changyu Shao
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University Hangzhou P. R. China
| | - Chaoqun Chen
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou P. R. China
| | - Jian Sun
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou P. R. China
| | - Caiyun Mao
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou P. R. China
| | - Ruikang Tang
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University Hangzhou P. R. China
| | - Xinhua Gu
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou P. R. China
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WANG R, STANLEY T, YAO X, LIU H, WANG Y. Collagen stabilization by natural cross-linkers: A qualitative and quantitative FTIR study on ultra-thin dentin collagen model. Dent Mater J 2022; 41:440-450. [DOI: 10.4012/dmj.2021-247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Rong WANG
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City
| | - Tyler STANLEY
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City
| | - Xiaomei YAO
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City
| | - Hang LIU
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City
| | - Yong WANG
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City
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12
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Push Out Bond Strength of a Glass Fibre Post to Root Dentine Pretreated with Proanthocyanidin and Phytosphingosine - An In Vitro Study. Eur Endod J 2021; 6:230-234. [PMID: 34650018 PMCID: PMC8461486 DOI: 10.14744/eej.2021.22931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To evaluate the push out bond strength of a glass fibre post to root dentine pretreated with 6.5% proanthocyanidin (PAC) and 0.02% phytosphingosine (PHS). METHODS Thirty-three freshly extracted single rooted human teeth were decoronated to a length of 14 mm. Root canals were prepared using rotary NiTi files and obturated with gutta percha and resin sealer. Post space was prepared using peeso reamers, retaining 5 mm of apical gutta percha. Following smear layer removal and acid etching of the post space, samples were randomly assigned to 3 groups based on the dentine pretreatment, namely the control (no pretreatment) group, 6.5% PAC group, and 0.02% PHS group. A glass fibre post was luted using a dual cure adhesive and luting cement. 1 mm thick root slices were sectioned from coronal, middle and apical levels of the post and their push out bond strength was evaluated using a universal testing machine. Data was analysed with one-way ANOVA and Games-Howell post hoc test (P<0.05). RESULTS At all levels, PHS showed higher push out bond strength than PAC and control groups, with a significant difference between the experimental groups at the middle and apical thirds (P<0.05). The push out bond strength of PAC group was significantly higher than the control group in the coronal and apical thirds (P<0.05). CONCLUSION Both PAC and PHS improved the push out bond strength of a glass fibre post to dentine.
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Influence of Dentin Priming with Tannin-Rich Plant Extracts on the Longevity of Bonded Composite Restorations. ScientificWorldJournal 2021; 2021:1614643. [PMID: 34220363 PMCID: PMC8221859 DOI: 10.1155/2021/1614643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/06/2021] [Indexed: 02/06/2023] Open
Abstract
Objective This in vitro study evaluated the influence of bioactive plant extracts as dentin biomodifying agents to improve the longevity of bonded restorations. For that, plant extracts were applied to the dentin surface prior to the adhesive system. Materials and Methods Bovine incisors were ground flat to obtain 2 mm thick slices in which conical preparations were made (N = 10). Tannin-containing plant extracts were applied to dentin before the application of the restorative system, as follows: control group (untreated, CTL), chlorhexidine 0.12% (CHX), mastruz (Dysphania ambrosioides, MTZ), cat's claw (Uncaria tomentosa, CTC), guarana (Paullinia cupana, GUA), galla chinensis (Rhus chinensis, GCH), and tannic acid (extracted from Acacia decurrens, TNA). The push-out bond strength test was conducted (0.5 mm/min). Dentin biomodification was assessed by the modulus of elasticity and mass change in bovine tooth sections (0.5 × 1.7 × 7.0 mm). The dentin staining after extract treatments of dentin slices was compared. The dentin surface wettability was also evaluated by means of the contact angles of the adhesive system with the dentin surface and compared with the untreated control group. Data were subjected to ANOVA/Tukey's test (α = 0.05). Results The bond strength of the restoratives to dentin was not significantly improved by the plant extracts, irrespective of the evaluation time (p > 0.05). Except for TNA, the elastic modulus of demineralized dentin significantly reduced after treatment with the plant extracts (p < 0.05). The dentin staining correlated with the tannin content of the extracts. The contact angle was significantly reduced when treated with CTC, GCH, and TNA. Conclusions The tannin-containing extracts had a questionable effect on the longevity of bonded restorations. The dentin modulus was negatively affected by the extract treatments. Although some of the extracts changed the contact angle, which seems to improve the adhesive monomer permeation, the tannin-rich plant extract application prior to adhesive application was proven to be clinically unfeasible due to dentin staining.
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Li K, Zhang Z, Sun Y, Yang H, Tsoi JKH, Huang C, Yiu CKY. In vitro evaluation of the anti-proteolytic and cross-linking effect of mussel-inspired monomer on the demineralized dentin matrix. J Dent 2021; 111:103720. [PMID: 34119610 DOI: 10.1016/j.jdent.2021.103720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/30/2021] [Accepted: 06/02/2021] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES To evaluate the anti-proteolytic and cross-linking effect of N-(3,4-dihydroxyphenethyl)methacrylamide (DMA) on the demineralized dentin matrix in vitro. METHODS Four experimental solutions were selected: 50% ethanol/water solution (Control); 1, 5, and 10 mmol/L DMA dissolved in 50% ethanol/water solution. Sound human molars were sectioned to produce dentin beams with dimension of 1×1×6 mm. The dentin beams were demineralized with 10% phosphoric acid for 8 h to remove the apatite. The demineralized specimens were randomly separated into four groups and immersed in the four experimental solutions for 1 h. After the treatment, the ultimate tensile strength (UTS), loss of dry mass and the release of hydroxyproline by storing the treated specimens in 0.1 mg/mL collagenase solution for 24 h were assessed. The swelling ratio of another ten specimens from each group were evaluated. The interaction between DMA with dentin matrix was observed under Field Emission Scanning Electron Microscopy (FESEM). UTS data was analyzed by two-way ANOVA followed by Tukey test, and the other data was analyzed by one-way ANOVA followed by Tukey test (α = 0.05). RESULTS The two-way ANOVA factors, different solutions (p < 0.001), collagenase degradation (p < 0.001) and their interactions (p < 0.001) all significantly affected the UTS. The 10 mM DMA treatment significantly decreased the percentage of loss of dry mass, release of hydroxyproline and swelling ratio of demineralized dentin matrix compared to other treatment groups (p < 0.05). The FESEM observation depicted that with increasing concentration of DMA, the structure of dentin matrix was protected and the porosity within dentin collagen network was decreased. CONCLUSIONS The treatment by 10 mM DMA/ethanol solution for 1 hour is capable of enhancing the mechanical properties of demineralized dentin matrix against collagenase degradation and may be clinically useful to improve the durability of hybrid layer. CLINICAL SIGNIFICANCE The 10 mM DMA/ethanol primer may offer an alternative choice for dentists to strengthen the mechanical properties of demineralized dentin matrix and resist its degradation by collagenase.
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Affiliation(s)
- Kang Li
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 2nd Floor, Prince Philip Dental Hospital 34 Hospital Road, Sai Ying Pun, Hong Kong, PR China
| | - Zhongni Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, #237 Luoyu Road, Hongshan District, Wuhan 430079, China
| | - Yuhong Sun
- Center of Stomatology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Hongye Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, #237 Luoyu Road, Hongshan District, Wuhan 430079, China
| | - James Kit Hon Tsoi
- Dental Materials Science, Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Sai Ying Pun, Hong Kong, PR China
| | - Cui Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, #237 Luoyu Road, Hongshan District, Wuhan 430079, China.
| | - Cynthia Kar Yung Yiu
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 2nd Floor, Prince Philip Dental Hospital 34 Hospital Road, Sai Ying Pun, Hong Kong, PR China.
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Kharouf N, Zghal J, Addiego F, Gabelout M, Jmal H, Haikel Y, Bahlouli N, Ball V. Tannic acid speeds up the setting of mineral trioxide aggregate cements and improves its surface and bulk properties. J Colloid Interface Sci 2021; 589:318-326. [PMID: 33472151 DOI: 10.1016/j.jcis.2020.12.115] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/01/2020] [Accepted: 12/29/2020] [Indexed: 12/18/2022]
Abstract
HYPOTHESIS The setting time and mechanical properties of cements are a major technical concern for a long time in civil engineering. More recently those practical problems became a major concern for biomedical applications -in bone surgery and in dentistry- in particular concerning the setting time which should be minimized. The possibility to add organic additives to interact with the different constituting ions in cements constitutes a way to modify the setting kinetics. We made the assumption that a hydrolysable polyphenol like tannic acid could modify the setting time and the physical properties of Mineral Trioxide Aggregate (MTA). EXPERIMENTS Tannic acid is added in variable proportions to the water used to set MTA. The formation of the hybrid organic-mineral cements is investigated using a combination of structural, chemical and mechanical methods. X-ray tomography was also used to investigate the changes in porosity and pore size distribution upon incorporation of tannic acid in MTA based cements. The hydrophilicity of the cements was evaluated by measuring the permeation kinetics of small water droplets. FINDINGS We found that tannic acid allowed to reduce markedly the setting time of MTA based cements. The obtained cements have an increased hydrophilicity and display excellent resistance to compression. The number of pores but not the average pore size is also affected. The possible roles of tannic acid in modifying the cement properties are discussed.
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Affiliation(s)
- Naji Kharouf
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Sainte Elisabeth, 67000 Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 11 rue Humann, 67085 Strasbourg Cedex, France
| | - Jihed Zghal
- ICube Laboratory, University of Strasbourg- CNRS, 2 rue Boussingault, 67000 Strasbourg, France; ECAM Strasbourg Europe, 2 Rue de Madrid, 67300 Schiltigheim, France
| | - Frédéric Addiego
- Luxembourg Institute of Science and Technology (LIST), Department Materials Research and Technology (MRT), ZAE Robert Steichen, 5 Rue Bommel, L-4940 Hautcharage, Luxembourg
| | - Manon Gabelout
- R&D/Innovation, ITENA CLINICAL, 31 Avenue Georges Clemenceau, 93420 Villepinte, France
| | - Hamdi Jmal
- ICube Laboratory, University of Strasbourg- CNRS, 2 rue Boussingault, 67000 Strasbourg, France
| | - Youssef Haikel
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Sainte Elisabeth, 67000 Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 11 rue Humann, 67085 Strasbourg Cedex, France
| | - Nadia Bahlouli
- ICube Laboratory, University of Strasbourg- CNRS, 2 rue Boussingault, 67000 Strasbourg, France
| | - Vincent Ball
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Sainte Elisabeth, 67000 Strasbourg, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1121, 11 rue Humann, 67085 Strasbourg Cedex, France.
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Nagpal M, Taneja S, Kumar M, Dudeja C. Evaluation of the effect of natural versus synthetic matrix metalloproteinase silencers in preservation of dentin collagen and long-term bond strength of total etch adhesive. J Conserv Dent 2020; 23:221-226. [PMID: 33551589 PMCID: PMC7861083 DOI: 10.4103/jcd.jcd_91_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/29/2020] [Accepted: 08/25/2020] [Indexed: 11/04/2022] Open
Abstract
Aim This study investigated the effect of various synthetic (galardin [Gal] and benzalkonium chloride [BAC]) and natural agents (hesperidin [HES] and epigallocatechin gallate) on the stability of dentin collagen matrix to resist collagenase degradation and improve long-term microtensile bond strength. Materials and Methods Ten sound-impacted third molars were collected and manual removal of pulp, periodontal ligament, cementum, and enamel was done. Remaining dentin fragments were pulverized under liquid nitrogen to obtain dentin powder. 2 mg aliquot of dentin powder was allocated to each of the test solutions and subjected to hydroxyproline assay. Another 60 sound human third molars were collected and occlusal enamel was ground flat to reach dentinoenamel junction. Class I cavities were prepared in dentin, followed by etching using 37% phosphoric acid for 15 s. Samples were then subjected to surface treatment with different agents for 60 s, followed by application of Optibond S and restoration with P 60 composite resin. Samples of all groups except control were subject to thermocycling. Samples were sectioned to 1 mm thick slabs which were subject to universal testing machine to determine ultimate tensile strength. One-way analysis of variance and Bonferroni post hoc test with a significance level of P < 0.05 were used to analyze data. Results HES resulted in maximum resistance to collagen degradation, followed by epigallocatechin gallate (EGCG), Gal, and BAC with a significant difference among the groups. Samples of Gal group showed the highest microtensile bond strength values, followed by HES, EGCG, BAC with a significant difference between the groups except HES and EGCG where the difference was nonsignificant. Conclusion The use of matrix metalloproteinase silencers could improve the mechanical properties of collagen and resist enzymatic degradation, leading to an improved long-term intimate restoration.
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Affiliation(s)
| | - Sonali Taneja
- Department of Conservative Dentistry & Endodontics, ITS Dental College and Hospital, Ghaziabad, Uttar Pradesh, India
| | - Mohit Kumar
- Department of Conservative Dentistry & Endodontics, ITS Dental College and Hospital, Ghaziabad, Uttar Pradesh, India
| | - Chetna Dudeja
- Department of Conservative Dentistry & Endodontics, ITS Dental College and Hospital, Ghaziabad, Uttar Pradesh, India
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Fu C, Deng S, Koneski I, Awad M, Akram Z, Matinlinna J, Pichika MR, Daood U, Fawzy A. Multiscale in-vitro analysis of photo-activated riboflavin incorporated in an experimental universal adhesive. J Mech Behav Biomed Mater 2020; 112:104082. [DOI: 10.1016/j.jmbbm.2020.104082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/31/2020] [Accepted: 09/07/2020] [Indexed: 11/25/2022]
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Curuțiu C, Dițu LM, Grumezescu AM, Holban AM. Polyphenols of Honeybee Origin with Applications in Dental Medicine. Antibiotics (Basel) 2020; 9:E856. [PMID: 33266173 PMCID: PMC7761219 DOI: 10.3390/antibiotics9120856] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/22/2020] [Accepted: 11/27/2020] [Indexed: 12/30/2022] Open
Abstract
Honeybee products are a great source of polyphenols with recognized applications in dental medicine. Although their biological mechanisms in oral diseases are not fully understood, numerous in vitro, in vivo and clinical studies have reported promising results in the prevention and treatment of oral diseases. Bioactivities, such as antibacterial, antiviral, antiparasite, anticancer, anti-inflammatory and anti-oxidant properties, recommend their future study in order to develop efficient alternatives in the management of widespread oral conditions, such as dental caries and periodontitis. The most investigated mechanisms of polyphenols in oral health rely on their ability to strengthen the dental enamel, decrease the development of dental plaque formation, inhibit the progression of dental caries and development of dental pathogens and show anti-inflammatory properties. These features recommend them as useful honeybee candidates in the management of emerging oral diseases.
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Affiliation(s)
- Carmen Curuțiu
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania; (C.C.); (L.M.D.); (A.M.H.)
| | - Lia Mara Dițu
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania; (C.C.); (L.M.D.); (A.M.H.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 90-92 Panduri Road, 050657 Bucharest, Romania
| | - Alina Maria Holban
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania; (C.C.); (L.M.D.); (A.M.H.)
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Polyphenols in Dental Applications. Bioengineering (Basel) 2020; 7:bioengineering7030072. [PMID: 32645860 PMCID: PMC7552636 DOI: 10.3390/bioengineering7030072] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/29/2020] [Accepted: 07/03/2020] [Indexed: 12/15/2022] Open
Abstract
(1) Background: polyphenols are a broad class of molecules extracted from plants and have a large repertoire of biological activities. Biomimetic inspiration from the effects of tea or red wine on the surface of cups or glass lead to the emergence of versatile surface chemistry with polyphenols. Owing to their hydrogen bonding abilities, coordination chemistry with metallic cations and redox properties, polyphenols are able to interact, covalently or not, with a large repertoire of chemical moieties, and can hence be used to modify the surface chemistry of almost all classes of materials. (2) Methods: the use of polyphenols to modify the surface properties of dental materials, mostly enamel and dentin, to afford them with better adhesion to resins and improved biological properties, such as antimicrobial activity, started more than 20 years ago, but no general overview has been written to our knowledge. (3) Results: the present review is aimed to show that molecules from all the major classes of polyphenolics allow for low coast improvements of dental materials and engineering of dental tissues.
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Antibacterial Efficacy of the Grape Seed Extract as an Irrigant for Root Canal Preparation. Eur Endod J 2020; 5:35-39. [PMID: 32342036 PMCID: PMC7183804 DOI: 10.14744/eej.2019.85057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/21/2019] [Indexed: 01/15/2023] Open
Abstract
Objective: The purpose of this research was to compare relative effectiveness of sodium hypochlorite 5.25% (NaOCl), 2% chlorhexidine gel (CHX) and 6.5 % grape seed extract (GSE) against Enterococcus faecalis using instrument Reciproc R25 in root canal preparation. Methods: Forty-five mesiobuccal root canals from extracted human maxillary molars were collected and infected with Enterococcus faecalis. The samples were divided into five groups according to the different types of irrigants: saline (positive control) (n=5); in the other groups were used 10 root canals for each group: NaOCl+EDTA; CHX gel+EDTA; GSE solution+EDTA; GSE gel+EDTA. All the groups were prepared with reciprocating instruments Reciproc R25. Bacterial reduction was measured by two-way ANOVA (P<0.001) followed by Tukey HSD post-hoc tests, from the counting of colony forming units (CFUs) from samples collected before instrumentation and after. The significance level established at 5% (P<0.05). Results: The group prepared with the NaOCl resulted in highest antimicrobial capacity among of all (P>0.05), followed by CHX and GSE gel (P<0.05). Control and GSE solution showed similar results (P<0.05) and resulted in the lowest percentage of the reduction of the microorganism into the root canals. Conclusion: NaOCl had the higher elimination capacity of Enterococcus faecalis than GSE and CHX.
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Xia Y, Yang ZY, Li YH, Zhou Z. The Effects of a Toothpaste Containing the Active Ingredients of Galla chinensis and Sodium Fluoride on Dentin Hypersensitivity and Sealing of Dentinal Tubules: An In Vitro Study and an Eight-Week Clinical Study in 98 Patients. Med Sci Monit 2020; 26:e920776. [PMID: 32307404 PMCID: PMC7191947 DOI: 10.12659/msm.920776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND This study aimed to evaluate the desensitizing effect of toothpaste containing the active ingredients of an extract of Galla chinensis, both in vitro and in patients with dentin hypersensitivity. MATERIAL AND METHODS Ninety-eight patients with dentin hypersensitivity were divided into two study groups and given toothpaste containing either the active ingredients of Galla chinensis extract and sodium fluoride, or a control toothpaste containing only sodium fluoride. Assessments included the tactile stimulation test and the Schiff cold air sensitivity scale, which were conducted at the baseline examination and after 4 and 8 weeks of dental brushing. Twenty-five intact human premolars from 24 patients with dentin hypersensitivity were prepared and randomly divided into four groups, the untreated baseline group, the study group, the positive control group, and the control group. After brushing with different toothpaste for 7 days, the effects on dentinal tubule sealing in each group was determined by scanning electron microscopy (SEM), and the degree of dentinal tubule plugging and diameter of the open dentinal tubules were calculated. RESULTS Toothpaste containing the active ingredients of Galla chinensis and sodium fluoride significantly reduced the degree of dentin hypersensitivity when compared with toothpaste containing sodium fluoride alone after 4 weeks and 8 weeks of use. Toothpaste containing the active ingredients of Galla chinensis significantly reduced the number and diameter of the open dentinal tubules. CONCLUSIONS Toothpaste that contained the active ingredients of Galla chinensis and sodium fluoride reduced the symptoms of dentin hypersensitivity by sealing the dentinal tubules.
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Affiliation(s)
- Yu Xia
- The College of Stomatology, Chongqing Medical University, Chongqing, China (mainland).,Chongqing Key Laboratory for Oral Diseases and Biomedical Science, Chongqing, China (mainland).,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China (mainland)
| | - Zheng-Yan Yang
- The College of Stomatology, Chongqing Medical University, Chongqing, China (mainland).,Chongqing Key Laboratory for Oral Diseases and Biomedical Science, Chongqing, China (mainland).,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China (mainland)
| | - Yue-Heng Li
- The College of Stomatology, Chongqing Medical University, Chongqing, China (mainland).,Chongqing Key Laboratory for Oral Diseases and Biomedical Science, Chongqing, China (mainland).,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China (mainland)
| | - Zhi Zhou
- The College of Stomatology, Chongqing Medical University, Chongqing, China (mainland).,Chongqing Key Laboratory for Oral Diseases and Biomedical Science, Chongqing, China (mainland).,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China (mainland)
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Jiménez N, Ballard N, Asua JM. Hydrogen Bond-Directed Formation of Stiff Polymer Films Using Naturally Occurring Polyphenols. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01694] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nerea Jiménez
- POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas, University of the Basque Country UPV/EHU, Joxe Mari Korta zentroa, Tolosa Hiribidea 72, Donostia-San Sebastián 20018, Spain
| | - Nicholas Ballard
- POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas, University of the Basque Country UPV/EHU, Joxe Mari Korta zentroa, Tolosa Hiribidea 72, Donostia-San Sebastián 20018, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao 48013, Spain
| | - José M. Asua
- POLYMAT and Departamento de Química Aplicada, Facultad de Ciencias Químicas, University of the Basque Country UPV/EHU, Joxe Mari Korta zentroa, Tolosa Hiribidea 72, Donostia-San Sebastián 20018, Spain
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Aydin B, Leme-Kraus AA, Vidal CMP, Aguiar TR, Phansalkar RS, Nam JW, McAlpine JB, Chen SN, Pauli GF, Bedran-Russo AK. Evidence to the role of interflavan linkages and galloylation of proanthocyanidins at sustaining long-term dentin biomodification. Dent Mater 2018; 35:328-334. [PMID: 30580969 DOI: 10.1016/j.dental.2018.11.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 06/13/2018] [Accepted: 11/23/2018] [Indexed: 01/05/2023]
Abstract
OBJECTIVES The interactivity of proanthocyanidins (PACs) with collagen modulates dentin matrix biomechanics and biostability. Herein, PAC extracts selected based on structural diversity were investigated to determine key PAC features driving sustained effects on dentin matrices over a period of 18months. METHODS The chemical profiles of PAC-rich plant sources, Pinus massoniana (PM), Cinnamomum verum (CV) and Hamamelis virginiana (HV) barks, as well as Vitis vinifera (VV) seeds, were obtained by diol HPLC analysis after partitioning of the extracts between methyl acetate and water. Dentin matrices (n=15) were prepared from human molars to determine the apparent modulus of elasticity over 18months of aging. Susceptibility of the dentin matrix to degradation by endogenous and exogenous proteases was determined by presence of solubilized collagen in supernatant, and resistance to degradation by bacterial collagenase, respectively. Data were analyzed using ANOVA and Games-Howell post hoc tests (α=0.05). RESULTS After 18months, dentin matrices modified by PM and CV extracts, containing only non-galloylated PACs, were highly stable mechanically (p<0.05). Dentin matrices treated with CV exhibited the lowest degradation by bacterial collagenase after 1h and 18months of aging (p<0.05), while dentin matrices treated with PM showed the least mass loss and collagen solubilization by endogenous enzymes over time (p<0.05). SIGNIFICANCE Resistance against long-term degradation was observed for all experimental groups; however, the most potent and long-lasting dentin biomodification resulted from non-galloylated PACs.
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Affiliation(s)
- Berdan Aydin
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Ariene A Leme-Kraus
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Cristina M P Vidal
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Thaiane R Aguiar
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Rasika S Phansalkar
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Joo-Won Nam
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - James B McAlpine
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA; Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Shao-Nong Chen
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA; Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Guido F Pauli
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA; Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Ana K Bedran-Russo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA; Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA.
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24
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dos Santos AF, Pacheco JM, Silva PAO, Bedran-Russo AK, Rezende TMB, Pereira PNR, Ribeiro APD. Direct and transdentinal biostimulatory effects of grape seed extract rich in proanthocyanidin on pulp cells. Int Endod J 2018; 52:424-438. [DOI: 10.1111/iej.13019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 09/19/2018] [Indexed: 12/29/2022]
Affiliation(s)
- A. F. dos Santos
- Department of Dentistry; Faculty of Health Sciences; University of Brasília; Brasilia Brazil
| | - J. M. Pacheco
- Department of Dentistry; Faculty of Health Sciences; University of Brasília; Brasilia Brazil
| | - P. A. O. Silva
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia; Universidade Católica de Brasília; Brasilia Brazil
| | - A. K. Bedran-Russo
- Department of Restorative Dentistry; UIC College of Dentistry; Chicago IL USA
| | - T. M. B. Rezende
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia; Universidade Católica de Brasília; Brasilia Brazil
| | - P. N. R. Pereira
- Department of Restorative Dental Sciences; College of Dentistry; University of Florida; Gainesville FL USA
| | - A. P. D. Ribeiro
- Department of Restorative Dental Sciences; College of Dentistry; University of Florida; Gainesville FL USA
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25
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Cisne R, Souza AMT, Pereira-Sampaio MA, Babinski MA, Gorniak SL, Papa PC. Tannic Acid Solution: A Better Fixative Solution Than Formalin for Elastin and Collagen-Toxic and Morphological Assessment. Anat Rec (Hoboken) 2018; 301:1544-1550. [DOI: 10.1002/ar.23894] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 02/02/2018] [Accepted: 02/21/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Rafael Cisne
- Department of Morphology, Biomedical Center; Fluminense Federal University; Niterói RJ Brazil
| | - Alessandra M. T. Souza
- Laboratory of Molecular Modeling and QSAR (ModMolQSAR), Faculty of Pharmacy, Center of Health Sciences; Federal University of Rio de Janeiro (UFRJ), 21941-590; Rio de Janeiro RJ Brazil
| | | | - Marcio A. Babinski
- Department of Morphology, Biomedical Center; Fluminense Federal University; Niterói RJ Brazil
| | - Silvana L. Gorniak
- Research Center for Veterinary Toxicology (CEPTOX), Department of Pathology; School of Veterinary Medicine, University of São Paulo; São Paulo Brazil
| | - Paula C. Papa
- Department of Surgery, School of the Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
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26
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Bridi E, Leme-Kraus A, Aydin B, Basting R, Bedran-Russo A. Long-term evaluation of the stability of dentin matrix following treatments with aqueous solutions of titanium tetrafluoride at different concentrations. Arch Oral Biol 2018; 91:51-56. [DOI: 10.1016/j.archoralbio.2018.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 04/05/2018] [Accepted: 04/08/2018] [Indexed: 12/21/2022]
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27
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Guo J, Sun W, Kim JP, Lu X, Li Q, Lin M, Mrowczynski O, Rizk EB, Cheng J, Qian G, Yang J. Development of tannin-inspired antimicrobial bioadhesives. Acta Biomater 2018; 72:35-44. [PMID: 29555464 PMCID: PMC6328059 DOI: 10.1016/j.actbio.2018.03.008] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/03/2018] [Accepted: 03/05/2018] [Indexed: 12/25/2022]
Abstract
Tissue adhesives play an important role in surgery to close wounds, seal tissues, and stop bleeding, but existing adhesives are costly, cytotoxic, or bond weakly to tissue. Inspired by the water-resistant adhesion of plant-derived tannins, we herein report a new family of bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. The oxidized polyphenol groups of tannic acid enable wet tissue adhesion through catecholamine-like chemistry, while both tannic acid and silver nanoparticles reduced from silver nitrate provide antimicrobial sources inherent within the polymeric network. These tannin-inspired gelatin bioadhesives are low-cost and readily scalable and eliminate the concerns of potential neurological effect brought by mussel-inspired strategy due to the inclusion of dopamine; variations in gelatin source (fish, bovine, or porcine) and tannic acid feeding ratios resulted in tunable gelation times (36 s-8 min), controllable degradation (up to 100% degradation within a month), considerable wet tissue adhesion strengths (up to 3.7 times to that of fibrin glue), excellent cytocompatibility, as well as antibacterial and antifungal properties. The innate properties of tannic acid as a natural phenolic crosslinker, molecular glue, and antimicrobial agent warrant a unique and significant approach to bioadhesive design. STATEMENT OF SIGNIFICANCE This manuscript describes the development of a new family of tannin-inspired antimicrobial bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. Our strategy is new and can be easily extended to other polymer systems, low-cost and readily scalable, and eliminate the concerns of potential neurological effect brought by mussel-inspired strategy due to the inclusion of dopamine. The tannin-inspired gelatin bioadhesives hold great promise for a number of applications in wound closure, tissue sealant, hemostasis, antimicrobial and cell/drug delivery, and would be interested to the readers from biomaterials, tissue engineering, and drug delivery area.
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Affiliation(s)
- Jinshan Guo
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Wei Sun
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Jimin Peter Kim
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xili Lu
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Institute of Materials Processing and Intelligent Manufacturing, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Qiyao Li
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Min Lin
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Emergency Center, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, China
| | - Oliver Mrowczynski
- Department of Neurosurgery, College of Medicine, The Pennsylvania State University, Hershey 17033, USA
| | - Elias B Rizk
- Department of Neurosurgery, College of Medicine, The Pennsylvania State University, Hershey 17033, USA
| | - Juange Cheng
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Guoying Qian
- Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China.
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
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28
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Bharti N, Chandra A, Tikku AP, Verma P, Bharti R, Shakya VK, Bains R. An ex vivo evaluation of effect of dentin pretreatment with various agents for varying time intervals on the shear bond strength of resin. JOURNAL OF CONSERVATIVE DENTISTRY : JCD 2018; 21:37-41. [PMID: 29628645 PMCID: PMC5852933 DOI: 10.4103/jcd.jcd_227_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: This article highlights the contribution of collagen structure/stability to the bond strength. We hypothesize that induction of cross-linking in dentin collagen fibrils improves dentin collagen stability and thus bond strength with composite also improves. Aims: The aim of the study was to evaluate the effect of collagen cross-linking agents on the shear bond strength of composite resins. Subjects and Methods: One hundred human permanent teeth were randomly divided into three groups: Group I (n = 20) – no dentin pretreatment done, Group II – dentin pretreatment with 10% sodium ascorbate for 5 min (IIa) and 10 min (IIb), and Group III – dentin pretreatment with 6.5% proanthocyanidin (PA) for 5 min (IIIa) and 10 min (IIIb). A composite resin was bonded on prepared surfaces and cured. Thermocycling was done, and shear bond strength of the prepared samples was tested using a universal testing machine. Results: Values of Group I (control) were lowest whereas that of Group II (sodium ascorbate) were highest. The following order of shear bond strength was observed: IIb > IIa > IIIb ~ IIIa > I. Results for sodium ascorbate were found to be time dependent, whereas for PA, differences were nonsignificant. Conclusions: Treatment of dentinal surfaces with collagen cross-linking agent increases the shear bond strengths.
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Affiliation(s)
- Nidhi Bharti
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Anil Chandra
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - A P Tikku
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Promila Verma
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ramesh Bharti
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Vijay Kumar Shakya
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Rhythm Bains
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
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Choi D, Komeda M, Heo J, Hong J, Matsusaki M, Akashi M. Vascular Endothelial Growth Factor Incorporated Multilayer Film Induces Preangiogenesis in Endothelial Cells. ACS Biomater Sci Eng 2018; 4:1833-1842. [DOI: 10.1021/acsbiomaterials.8b00100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daheui Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Misaki Komeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jiwoong Heo
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Michiya Matsusaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoaka, Suita, Osaka 565-0871, Japan
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30
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Cai J, Palamara JEA, Burrow MF. Effects of Collagen Crosslinkers on Dentine: A Literature Review. Calcif Tissue Int 2018; 102:265-279. [PMID: 29058055 DOI: 10.1007/s00223-017-0343-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/09/2017] [Indexed: 11/30/2022]
Abstract
This aim of this review is to explore the current research related to crosslinking agents used on dentine. A systematic search of publications in PubMed and Web of Science databases was performed. Further retrieval was conducted using the search terms of specific names of crosslinkers. Reviews, conference abstracts, dissertation and theses, non-English articles, studies of intrinsic crosslinking of dentine, studies of adhesives without specific crosslinker components, studies of crosslinker applications in other collagenous tissues or tooth-like structures and irrelevant studies were excluded. Manual screening was conducted on the bibliographies of remaining papers to identify other relevant articles. One hundred and one articles were included in this systematic review and full texts were retrieved. Both synthetic and naturally derived crosslinkers have been found to exhibit significant effects in biomodification of dentine via their multiple interactions with the dentine matrix. A stable matrix network or a durable hybrid layer in dentine bonding could be achieved, where the dentine collagen fibrils show improved biochemical and biomechanical properties and enzymatic biodegradation is reduced. Although no crosslinkers have been tested in clinical trials, extensive research has been conducted in laboratory studies to investigate their potential applicability for inhibition of demineralisation and/or promotion of remineralisation, caries prevention as well as improvement of bonding performance of adhesive systems. Further studies are needed to develop the feasibility for clinical use, reduce side effects as well as explore mechanisms of action and long-term effectiveness.
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Affiliation(s)
- J Cai
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
| | - J E A Palamara
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
| | - M F Burrow
- Melbourne Dental School, University of Melbourne, Melbourne, Australia.
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Rd, Sai Ying Pun, Hong Kong, SAR, China.
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31
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Bridgeman CJ, Nguyen TU, Kishore V. Anticancer efficacy of tannic acid is dependent on the stiffness of the underlying matrix. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:412-427. [PMID: 29285987 DOI: 10.1080/09205063.2017.1421349] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tannic acid (TA) has been previously shown to have anticancer potential for breast cancer but its effects on melanoma have not yet been investigated. Similarly, stiffness of the tumor microenvironment is known to have a profound effect on breast cancer metastasis, but little is known about its role on melanoma. The goal of the current study is to investigate the synergistic effects of TA and matrix stiffness on melanoma progression. A375 melanoma cells with metastatic potential were cultured on TA crosslinked uncompacted (UC; soft) and electrochemically compacted (ECC; stiff) collagen gels and the effects of TA on gel morphology, mechanical properties, and cellular response (i.e. morphology and proliferation) were evaluated. SEM results showed that TA crosslinking induced merging of collagen fibrils that resulted in decrease in pore size of both UC and ECC collagen gels. Tensile testing showed that TA crosslinking significantly (p < 0.05) improved the mechanical properties of ECC collagen gels. Results from Alamar blue assay showed that TA preferentially inhibited the proliferation of A375 melanoma cells compared to the non-cancerous NIH 3T3 fibroblasts on UC collagen gels. However, on ECC collagen gels, preferential effect of TA was not prevalent as proliferation of both cell types was inhibited to a similar extent. When comparing the two gel types, inhibition of A375 melanoma cell proliferation was more pronounced on TA crosslinked UC collagen gels compared to TA crosslinked ECC collagen gels. Overall, these results suggest that TA incorporated into UC collagen gels may more selectively inhibit the proliferation of melanoma cells, and that matrix stiffness is an important driver of tumor proliferation and progression.
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Affiliation(s)
- Christopher J Bridgeman
- a Department of Biomedical Engineering , Florida Institute of Technology , Melbourne , FL , USA
| | - Thuy-Uyen Nguyen
- b Department of Chemical Engineering , Florida Institute of Technology , Melbourne , FL , USA
| | - Vipuil Kishore
- a Department of Biomedical Engineering , Florida Institute of Technology , Melbourne , FL , USA.,b Department of Chemical Engineering , Florida Institute of Technology , Melbourne , FL , USA
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32
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Effect of photoactivated riboflavin on the biodegradation-resistance of root-dentin collagen. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 177:18-23. [DOI: 10.1016/j.jphotobiol.2017.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 10/05/2017] [Accepted: 10/07/2017] [Indexed: 11/18/2022]
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Kaczmarek B, Sionkowska A. Chitosan/collagen blends with inorganic and organic additive-A review. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21912] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- B. Kaczmarek
- Department of Chemistry of Biomaterials and Cosmetics; Faculty of Chemistry; Nicolaus Copernicus University in Toruń; Toruń Poland
| | - A. Sionkowska
- Department of Chemistry of Biomaterials and Cosmetics; Faculty of Chemistry; Nicolaus Copernicus University in Toruń; Toruń Poland
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34
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Lee J, Yeo M, Kim W, Koo Y, Kim GH. Development of a tannic acid cross-linking process for obtaining 3D porous cell-laden collagen structure. Int J Biol Macromol 2017; 110:497-503. [PMID: 29054525 DOI: 10.1016/j.ijbiomac.2017.10.105] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/28/2017] [Accepted: 10/16/2017] [Indexed: 10/18/2022]
Abstract
Cell-printing is an emerging technique that enables to build a customized structure using biomaterials and living cells for various biomedical applications. In many biomaterials, alginate has been widely used for rapid gelation, low cost, and relatively high processability. However, biocompatibilities enhancing cell adhesion and proliferation were limited, so that, to overcome this problem, an outstanding alternative, collagen, has been extensively investigated. Many factors remain to be proven for cell-printing applications, such as printability, physical sustainability after printing, and applicability of in vitro cell culture. This study proposes a cell-laden collagen scaffold fabricated via cell-printing and tannic acid (TA) crosslinking process. The effects of the crosslinking agent (0-3wt% TA) in the cell-laden collagen scaffolds on physical properties and cellular activities using preosteoblasts (MC3T3-E1) were presented. Compared to the cell-laden collagen scaffold without TA crosslinking, the scaffold with TA crosslinking was significantly enhanced in mechanical properties, while reasonable cellular activities were observed. Concisely, this study introduces the possibility of a cell-printing process using collagen and TA crosslinking and in vitro cell culture for tissue regeneration.
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Affiliation(s)
- JiUn Lee
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea
| | - Miji Yeo
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea
| | - WonJin Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea
| | - YoungWon Koo
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea
| | - Geun Hyung Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea.
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35
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Efficacy of new natural biomodification agents from Anacardiaceae extracts on dentin collagen cross-linking. Dent Mater 2017; 33:1103-1109. [DOI: 10.1016/j.dental.2017.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/07/2017] [Accepted: 07/08/2017] [Indexed: 12/14/2022]
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36
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Zhang Z, Beitzel D, Majd H, Mutluay M, Tezvergil-Mutluay A, Tay FR, Pashley DH, Arola D. Fatigue resistance of dentin bonds prepared with two- vs. three-step adhesives: Effect of carbodiimide. Dent Mater 2017; 33:1340-1350. [PMID: 28942948 DOI: 10.1016/j.dental.2017.08.192] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 08/10/2017] [Accepted: 08/31/2017] [Indexed: 11/15/2022]
Abstract
The application of a cross-linker to demineralized dentin is reportedly effective at extending the durability of dentin bonds. OBJECTIVE To compare the effect of a cross-linker pretreatment on the fatigue crack growth resistance of resin-dentin bonds prepared with a two- vs. three-step adhesive system. METHODS Bonded interface Compact Tension (CT) specimens were prepared using commercial two- and three-step etch-and-rinse adhesives and compatible hybrid resin-composite. For the treated groups, adhesive bonding was preceded by a 1min application of an experimental carbodiimide (EDC) conditioner to the acid-etched dentin. The control groups received no such treatment. The fatigue crack growth resistance was examined after storage in artificial saliva at 37°C for 0, 3 and 6 months. RESULTS There was no significant difference in the immediate fatigue crack growth resistance the control and EDC-treated groups at 0 months for either adhesive system. After 3 and 6 months of storage, the EDC-treated groups exhibited significantly greater (p≤0.05) fatigue crack growth resistance than the controls. Although the EDC treatment was equally effective in deterring degradation for both adhesives, bonds prepared with the three-step system exhibited the lowest resistance to fatigue crack growth overall. SIGNIFICANCE An EDC treatment applied during dentin bonding could help maintain the durability of bonds prepared with two or three-step adhesive bonding systems.
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Affiliation(s)
- Zihou Zhang
- Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - Dylan Beitzel
- Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - Hessam Majd
- Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - Mustafa Mutluay
- Adhesive Dentistry Research Group, Department of Cariology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Arzu Tezvergil-Mutluay
- Adhesive Dentistry Research Group, Department of Cariology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Franklin R Tay
- Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA; Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - David H Pashley
- Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Dwayne Arola
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Departments of Oral Health Sciences and Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA USA.
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Tomaszewska E, Dobrowolski P, Winiarska-Mieczan A, Kwiecień M, Muszyński S, Tomczyk A. The effect of tannic acid on bone mechanical and geometric properties, bone density, and trabecular histomorphometry as well as the morphology of articular and growth cartilages in rats co-exposed to cadmium and lead is dose dependent. Toxicol Ind Health 2017; 33:855-866. [DOI: 10.1177/0748233717718973] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cadmium (Cd) and lead (Pb) are toxic elements that accumulate to the largest extent in bones. Rats were used to investigate whether tannic acid (TA; 0.5%, 1.0%, 1.5%. 2.0%, or 2.5%) would have a protective effect on the structure and properties of bones in the case of exposure to Cd and Pb (diet: 7 mg Cd/kg and 50 mg Pb/kg) for 6 weeks. The effects of administration of TA in Cd- and Pb-poisoned rats on bone characteristics and the morphology of articular and growth cartilages were determined. All the rats administered Cd and Pb had an enhanced Cd and Pb concentration in blood plasma and bone and reduced bone Ca content irrespective of the TA administration. Cd and Pb alone reduced the mechanical endurance and histomorphometric parameters of trabecular bone and the thickness of the growth plate and articular cartilage. Tannic acid improved cancellous bone parameters in the rat exposed to Cd and Pb. A diet rich in TA improved articular cartilage constituents in heavy metal-poisoned rats. These results suggest that alimentary TA supplementation can counteract in a dose-dependent manner some of the destructive changes evoked by Cd and Pb possibly by reducing the exposure.
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Affiliation(s)
- Ewa Tomaszewska
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Piotr Dobrowolski
- Department of Comparative Anatomy and Anthropology, Maria Curie-Skłodowska University, Lublin, Poland
| | - Anna Winiarska-Mieczan
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Lublin, Poland
| | - Małgorzata Kwiecień
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Lublin, Poland
| | - Siemowit Muszyński
- Department of Physics, Faculty of Production Engineering, University of Life Sciences in Lublin, Lublin, Poland
| | - Agnieszka Tomczyk
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
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Münchow EA, Bottino MC. Recent Advances in Adhesive Bonding - The Role of Biomolecules, Nanocompounds, and Bonding Strategies in Enhancing Resin Bonding to Dental Substrates. CURRENT ORAL HEALTH REPORTS 2017; 4:215-227. [PMID: 29177123 PMCID: PMC5697773 DOI: 10.1007/s40496-017-0146-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE OF REVIEW To present an overview on the main agents (i.e., biomolecules and nanocompounds) and/or strategies currently available to amplify or stabilize resin-dentin bonding. RECENT FINDINGS According to studies retrieved for full text reading (2014-2017), there are currently six major strategies available to overcome resin-dentin bond degradation: (i) use of collagen crosslinking agents, which may form stable covalent bonds with collagen fibrils, thus strengthening the hybrid layer; (ii) use of antioxidants, which may allow further polymerization reactions over time; (iii) use of protease inhibitors, which may inhibit or inactivate metalloproteinases; (iv) modification of the bonding procedure, which may be performed by using the ethanol wet-bonding technique or by applying an additional adhesive (hydrophobic) coating, thereby strengthening the hybrid layer; (v) laser treatment of the substrate prior to bonding, which may cause specific topographic changes in the surface of dental substrates, increasing bonding efficacy; and (vi) reinforcement of the resin matrix with inorganic fillers and/or remineralizing agents, which may positively enhance physico-mechanical properties of the hybrid layer. SUMMARY With the present review, we contributed to the better understanding of adhesion concepts and mechanisms of resin-dentin bond degradation, showing the current prospects available to solve that problematic. Also, adhesively-bonded restorations may be benefited by the use of some biomolecules, nanocompounds or alternative bonding strategies in order to minimize bond strength degradation.
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Affiliation(s)
- Eliseu A. Münchow
- Department of Dentistry, Health Science Institute, Federal University of Juiz de Fora, Governador Valadares, MG 35010, Brazil
| | - Marco C. Bottino
- Department of Biomedical and Applied Sciences, Division of Dental Biomaterials, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
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Maravic T, Mazzoni A, Comba A, Scotti N, Checchi V, Breschi L. How Stable is Dentin As a Substrate for Bonding? ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40496-017-0149-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kong K, Hiraishi N, Nassar M, Otsuki M, Yiu CK, Tagami J. Effect of phytic acid etchant on resin–dentin bonding: Monomer penetration and stability of dentin collagen. J Prosthodont Res 2017; 61:251-258. [DOI: 10.1016/j.jpor.2016.10.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 09/29/2016] [Accepted: 10/03/2016] [Indexed: 10/20/2022]
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Kulakowski D, Leme-Kraus AA, Nam JW, McAlpine J, Chen SN, Pauli GF, Ravindran S, Bedran-Russo AK. Oligomeric proanthocyanidins released from dentin induce regenerative dental pulp cell response. Acta Biomater 2017; 55:262-270. [PMID: 28365481 DOI: 10.1016/j.actbio.2017.03.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/01/2017] [Accepted: 03/28/2017] [Indexed: 01/04/2023]
Abstract
Proanthocyanidins (PACs) are plant-derived, multifunctional compounds that possess high interactivity with extracellular matrix (ECM) components. The documented affinity of PACs for type-I collagen is directly correlated with their structural features and degree of polymerization. In this investigation, centrifugal partition chromatography (CPC) was used to sequentially deplete less active monomeric and polymeric PACs from a crude Pinus massoniana bark extract to create refined mixtures enriched in oligomeric PACs. The ability of these oligomeric PACs to modify the mechanical properties of the dentin collagen matrix and their biocompatibility with dental pulp cells (DPCs) was evaluated in an innovative biomimetic environment. The refined mixtures displayed high interactivity with dentin collagen as demonstrated by a significant increase (>5-fold) in the modulus of elasticity of the dentin matrix. In a simplified model of the dentin-DPC complex, DPCs embedded within their native ECM in the presence of PAC-treated dentin exhibited increased proliferation. Quantitative gene expression analyses indicated that exposure to PAC-treated dentin increased the expression of key biomineralization and odontogenic differentiation regulators, including RUNX2, BMP2, OCN, and DSPP. LC-MS/MS analysis revealed that PACs two to four units long (dimers, trimers, and tetramers) were being released from dentin into media, influencing cell behavior. Overall, the results suggested that PAC dimers, trimers, and tetramers are not only biocompatible, but enhance the differentiation of DPCs towards a phenotype that favors biomineralization. PAC-enriched refined mixtures can influence the field of biomaterials and regeneration by serving as renewable, non-cytotoxic agents that can increase the mechanical properties of biomaterials. STATEMENT OF SIGNIFICANCE Pine bark extract is a renewable source of structurally diverse proanthocyanidins (PACs), multifunctional compounds whose interaction with collagen can be tailored to specific purposes by enrichment of selected PACs from the complex mixture. Oligomeric PACs were enriched from the extract and were shown here to sustain desired tissue modification and were thus assessed for cellular response in a model of the dentin-pulp interface. This model was developed to mimic leaching of potentially reactive compounds into pulp tissue. Dental pulp cells exposed to PAC-treated dentin showed increased proliferation and expression of genes necessary for extracellular matrix deposition and biomineralization, processes crucial for forming new dentin. Thus, collagen-interactive PACs may also enhance tissue regeneration and have broad impact in tissue engineering.
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Affiliation(s)
- Daniel Kulakowski
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Ariene A Leme-Kraus
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Joo-Won Nam
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States; College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
| | - James McAlpine
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Shao-Nong Chen
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Guido F Pauli
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Sriram Ravindran
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States.
| | - Ana K Bedran-Russo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
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Tomaszewska E, Dobrowolski P, Winiarska-Mieczan A, Kwiecień M, Tomczyk A, Muszyński S. The effect of tannic acid on the bone tissue of adult male Wistar rats exposed to cadmium and lead. ACTA ACUST UNITED AC 2017; 69:131-141. [DOI: 10.1016/j.etp.2016.12.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/07/2016] [Accepted: 12/06/2016] [Indexed: 12/01/2022]
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Arola D. Fatigue testing of biomaterials and their interfaces. Dent Mater 2017; 33:367-381. [PMID: 28222907 DOI: 10.1016/j.dental.2017.01.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 01/20/2017] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The objective of this article is to describe the importance of fatigue to the success of restorative dentistry, with emphasis on the methods for evaluating the fatigue properties of materials in this field, and the durability of their bonded interfaces. METHODS The stress-life fatigue and fatigue crack growth approaches for evaluating the fatigue resistance of dental biomaterials are introduced. Emphasis is placed on in vitro studies of the hard tissue foundation, restorative materials and their bonded interfaces. The concept of durability is then discussed, including the effects of conventional "mechanical" fatigue combined with pervasive threats of the oral environment, including variations in pH and the activation of endogenous dentin proteases. RESULTS There is growing evidence that fatigue is a principal contributor to the failure of restorations and that measures of static strength, used in qualifying new materials and practices, are not reflective of the fatigue performance. Results of selected studies show that the fundamental steps involved in the placement of restorations, including the cutting of preparations and etching, cause a significant reduction to the fatigue strength of the hard tissue foundation. In regards to the bonded interface, results of studies focused on fatigue resistance highlight the importance of the hybridization of resin tags, and that a reduction in integrity of the dentin collagen is detrimental to the durability of dentin bonds. SIGNIFICANCE Fatigue should be a central concern in the development of new dental materials and in assessing the success of restorative practices. A greater recognition of contributions from fatigue to restoration failures, and the development of approaches with closer connection to in vivo conditions, will be essential for extending the definition of lifelong oral health.
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Affiliation(s)
- Dwayne Arola
- Department of Materials Science and Engineering, University of Washington Seattle, WA, USA; Departments of Oral Health Sciences, School of Dentistry, University of Washington, Seattle, WA, USA; Departments of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA, USA.
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Ebrahimi M, Sarraf Shirazi A, Abdolhoseinpour F, Abdollahi M. Effect of Tannic Acid on Bond Strength of Etch and Rinse and Self-etch Adhesive Systems in Dentin of Primary Teeth. J Contemp Dent Pract 2017; 18:34-38. [PMID: 28050982 DOI: 10.5005/jp-journals-10024-1984] [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: 11/23/2022]
Abstract
INTRODUCTION One of the possible mechanisms for the gradual destruction of bond strength in dentin-resin interface, could be due to the demineralized unstable collagen matrix. Use of protease inhibitors, such as tannic acid (TA) could prevent destruction of collagen fibers. The aim of this study was to compare the TA effect on bond strength of etch and rinse and self-etch adhesive systems in the dentin of primary teeth. MATERIALS AND METHODS This in vitro study was done on 40 extracted primary molar teeth. The teeth were sectioned in the mesiodistal direction, and enamel of buccal and lingual surfaces was removed. Samples were randomly divided into four groups: Single bond (SB) + TA, SB, Clearfil SE Bond (CSB) + TA, and CSB. Then, Z250 and Clearfil AP-X composites were cured on the surfaces of SB and CSB groups respectively. After that, all samples were divided into aging and non-aging groups. For 3 months, samples were placed under 1,000 thermal cycles in aging group. Subsequently, the shear bond strengths of all groups were measured by the International testing machine, and failure mode was evaluated by an optical stereomicroscope. Data were analyzed with paired t-test and independent t-test. RESULTS Tannic acid induced a significant reduction in the immediate bond strength of adhesive SB. Meanwhile, TA had no significant effect on shear bond strength of the CSB system. CONCLUSION Based on our findings, use of TA is not recommended with SB and CSB adhesives on primary teeth. CLINICAL SIGNIFICANCE Tannic acid may not be considered in resin restorations of primary teeth.
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Affiliation(s)
- Masoumeh Ebrahimi
- Department of Pediatric Dentistry, Dental Research Center and Dental School of Mashhad University of Medical Sciences Mashhad, Islamic Republic of Iran
| | - Alireza Sarraf Shirazi
- Department of Pediatric Dentistry, Dental Research Center School of Dentistry, Mashhad University of Medical Sciences Mashhad, Islamic Republic of Iran
| | - Faraneh Abdolhoseinpour
- Department of Pediatric Dentistry, School of Dentistry, Dental Branch, Islamic Azad University, Tehran, Islamic Republic of Iran, e-mail:
| | - Mojtaba Abdollahi
- Department of Pedodontics, Private Practice, Mashhad, Islamic Republic of Iran
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Degradation in the fatigue crack growth resistance of human dentin by lactic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:716-725. [PMID: 28183665 DOI: 10.1016/j.msec.2016.12.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/18/2016] [Accepted: 12/13/2016] [Indexed: 01/08/2023]
Abstract
The oral cavity frequently undergoes localized changes in chemistry and level of acidity, which threatens the integrity of the restorative material and supporting hard tissue. The focus of this study was to evaluate the changes in fatigue crack growth resistance of dentin and toughening mechanisms caused by lactic acid exposure. Compact tension specimens of human dentin were prepared from unrestored molars and subjected to Mode I opening mode cyclic loads. Fatigue crack growth was achieved in samples from mid- and outer-coronal dentin immersed in either a lactic acid solution or neutral conditions. An additional evaluation of the influence of sealing the lumens by dental adhesive was also conducted. A hybrid analysis combining experimental results and finite element modeling quantified the contribution of the toughening mechanisms for both environments. The fatigue crack growth responses showed that exposure to lactic acid caused a significant reduction (p≤0.05) of the stress intensity threshold for cyclic crack extension, and a significant increase (p≤0.05) in the incremental fatigue crack growth rate for both regions of coronal dentin. Sealing the lumens had negligible influence on the fatigue resistance. The hybrid analysis showed that the acidic solution was most detrimental to the extrinsic toughening mechanisms, and the magnitude of crack closure stresses operating in the crack wake. Exposing dentin to acidic environments contributes to the development of caries, but it also increases the chance of tooth fractures via fatigue-related failure and at lower mastication forces.
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Lee J, Sabatini C. Glutaraldehyde collagen cross-linking stabilizes resin-dentin interfaces and reduces bond degradation. Eur J Oral Sci 2016; 125:63-71. [DOI: 10.1111/eos.12317] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Joshua Lee
- Department of Restorative Dentistry; School of Dental Medicine; University at Buffalo; Buffalo NY USA
| | - Camila Sabatini
- Department of Restorative Dentistry; School of Dental Medicine; University at Buffalo; Buffalo NY USA
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Hiraishi N, Maruno T, Tochio N, Sono R, Otsuki M, Takatsuka T, Tagami J, Kobayashi Y. Hesperidin interaction to collagen detected by physico-chemical techniques. Dent Mater 2016; 33:33-42. [PMID: 27771138 DOI: 10.1016/j.dental.2016.09.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Dentin collagen can be modified by some plant-derived flavonoids to improve properties of dentin organic matrix. Hesperidin (HPN), a hesperetin-7-O-rutinoside flavonoid, has a potential of dentin modification for being based on evidence that a treatment with HPN may resist collagenase degradation and arrest demineralization of human dentin. In this study, biophysical and molecular-level information on the interaction of HPN and collagen was investigated. METHODS HPN is extracted from citrus fruits. Sample collagenous solution was prepared using atelocollagen (ATCL) as a triple-helical peptide model. We have performed circular dichroism spectroscopic analysis, sedimentation velocity measurement by ultracentrifuge and saturation transfer difference measurement (STD) by NMR on HPN-collagen in solution state. RESULTS The circular dichroism and sedimentation velocity measurement showed the evidence for the molecular interaction between ATCL and HPN, while HPN did not induce any conformational change of ATCL. The STD-NMR study further confirmed this interaction and suggested that HPN interacted with ATCL through its aromatic part, not through its disaccharide moiety. SIGNIFICANCE These findings indicated that HPN is weakly bound to ATCL not causing structural modification of collagen. This interaction may contribute to the preservation of collagen by protecting from collagenase degradation.
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Affiliation(s)
- Noriko Hiraishi
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
| | - Takahiro Maruno
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naoya Tochio
- Reseach Center for the Mathematics on Chromatin Live Dynamics, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-852, Japan
| | - Ryohei Sono
- Sunstar Inc. 3-1 Asahi-machi, Takatsuki, Osaka 569-1195, Japan
| | - Masayuki Otsuki
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | | | - Junji Tagami
- Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - Yuji Kobayashi
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Christopher SR, Mathai V, Nair RS, Angelo JMC. The effect of three different antioxidants on the dentinal tubular penetration of Resilon and Real Seal SE on sodium hypochlorite-treated root canal dentin: An in vitro study. J Conserv Dent 2016; 19:161-5. [PMID: 27099424 PMCID: PMC4815546 DOI: 10.4103/0972-0707.178702] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE The effect of 10% ascorbic acid, 10% tannic acid, and 10% gallic acid on the dentinal tubular penetration of Resilon and Real Seal SE on sodium hypochlorite-treated root canal dentin was evaluated. MATERIALS AND METHODS Fifty human premolars were decoronated to attain 14-mm root length and divided into five groups of 10 teeth each. Biomechanical preparation was done with rotary instruments. Group I specimens were irrigated with saline and 17% ethylenediaminetetraacetic acid (EDTA). Specimens from groups II, III, IV, and V were irrigated with 5.25% sodium hypochlorite and 17% EDTA. Specimens from groups III, IV, and V underwent additional irrigation with antioxidants-10% ascorbic acid, 10% tannic acid, and 10% gallic acid, respectively. Following obturation with Resilon and Real Seal SE, scanning electron microscope (SEM) analysis was done to note the maximum dentinal tubular penetration at the cervical, middle, and apical thirds of each specimen. The data were statistically analyzed using one-way analysis of variance (ANOVA), Post hoc and Dunnett's test. RESULTS Maximum dentinal tubular penetration of Resilon and Real Seal SE was obtained following irrigation with 10% gallic acid. CONCLUSION 10% gallic acid was superior among the antioxidant irrigants that enabled the increased dentinal tubular penetration of Resilon and Real Seal SE.
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Affiliation(s)
- Sarah Renjelina Christopher
- Department of Conservative Dentistry and Endodontics, Sree Mookambika Institute of Dental Sciences, Kanyakumari, Tamil Nadu, India
| | - Vijay Mathai
- Department of Conservative Dentistry and Endodontics, Sree Mookambika Institute of Dental Sciences, Kanyakumari, Tamil Nadu, India
| | - Rajesh Sasidharan Nair
- Department of Conservative Dentistry and Endodontics, Sree Mookambika Institute of Dental Sciences, Kanyakumari, Tamil Nadu, India
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Mechanisms of degradation of the hybrid layer in adhesive dentistry and therapeutic agents to improve bond durability—A literature review. Dent Mater 2016; 32:e41-53. [DOI: 10.1016/j.dental.2015.11.007] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 10/19/2015] [Accepted: 11/30/2015] [Indexed: 12/25/2022]
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Asadi E, Abdouss M, Leblanc RM, Ezzati N, Wilson JN, Azodi-Deilami S. In vitro/in vivo study of novel anti-cancer, biodegradable cross-linked tannic acid for fabrication of 5-fluorouracil-targeting drug delivery nano-device based on a molecular imprinted polymer. RSC Adv 2016. [DOI: 10.1039/c6ra03704f] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structure of a 5-fluorouracil carrier and fluorescent image of an animal after injection under a magnetic field.
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Affiliation(s)
- Ebadullah Asadi
- Department of Chemistry
- Amirkabir University of Technology
- Tehran
- Iran
| | - Majid Abdouss
- Department of Chemistry
- Amirkabir University of Technology
- Tehran
- Iran
| | | | - Noushin Ezzati
- Young Researchers and Elite Club
- Saveh Branch
- Islamic Azad University
- Saveh
- Iran
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