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Pugdee K, Klaisiri A, Phumpatrakom P. The viability of human dental pulp cells and apical papilla cells after treatment with conventional calcium hydroxide and nanoparticulate calcium hydroxide at various concentrations. Saudi Dent J 2023; 35:1000-1006. [PMID: 38107041 PMCID: PMC10724347 DOI: 10.1016/j.sdentj.2023.08.001] [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: 04/16/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 12/19/2023] Open
Abstract
Introduction Nanoparticulate Ca(OH)2 had greater antibacterial effect than conventional Ca(OH)2. Conversely, a study reported that nanoparticulate Ca(OH)2 had toxicity against murine fibroblast. However, the study of nanoparticulate Ca(OH)2, involving human dental pulp cells (DPCs) and apical papilla cells (APCs) is lacking. The aim of this study is to compare the effects of conventional Ca(OH)2 and nanoparticulate Ca(OH)2 on the viability of DPCs and APCs. Methods Primary human DPCs/APCs from the 3rd to 5th passage were divided into control and experimental groups. In the control group, cells were cultured in complete media. In the experimental group, cells were cultured in complete media containing 10, 100, or 1000 μg/mL of either conventional Ca(OH)2 or nanoparticulate Ca(OH)2 for 1, 3, 5, and 7 days. After the treatment period, the cells were tested for viability using MTT assay. Results DPCs treated with conventional Ca(OH)2 in all concentrations at day 5 revealed significantly higher proliferation compared to nanoparticulate Ca(OH)2 treated groups. In additions, DPCs treated with 1000 µg/ml nanoparticulate Ca(OH)2 at day7 were significantly lower proliferation compared to DPCs treated with conventional Ca(OH)2. In contrast, APCs treated with 1000 µg/ml nanoparticulated Ca(OH)2 were significantly higher proliferation than APCs treated with 1000 µg/ml conventional Ca(OH)2 at day7. Conclusions Nanoparticulate Ca(OH)2 increased the viability of APCs and can be an alternative choice of intracanal medication for regenerative endodontic procedures. However, Nanoparticulate Ca(OH)2 exerted some effects on DPCs. The use of nanoparticulate Ca(OH)2 has no advantages over the conventional Ca(OH)2 for vital pulp therapy.
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Affiliation(s)
- Kamolparn Pugdee
- Division of Oral Biology, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
| | - Awiruth Klaisiri
- Division of Operative Dentistry, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
| | - Panupat Phumpatrakom
- Division of Endodontics, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
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Amer NA, Badawi MF, Elbeltagi MG, Badr AE. Effect of Boswellic Acid on Viability of Dental Pulp Stem Cells Compared to the Commonly Used Intracanal Medications: An In Vitro Study. J Contemp Dent Pract 2023; 24:957-966. [PMID: 38317393 DOI: 10.5005/jp-journals-10024-3609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
AIM This study was aimed at evaluating the effect of acetyl-11-keto-β-boswellic acid (AKBA) on dental pulp stem cells (DPSCs) viability and proliferation to be used as a potential root canal medicament. MATERIALS AND METHODS Dental pulp stem cells were isolated from human third molars. The phenotypic characterization of DPSCs was verified by flow cytometry analysis. The viability assay was performed using the methyl-thiazoltetrazolium (MTT) assay. Cells were treated with different concentration of triple antibiotic paste (TAP) and calcium hydroxide Ca(OH2) (5, 2.5, 1, 0.5, and 0.25 mg/mL), AKBA (10, 5, 1, 0.1, and 0.01 µM). All experiments were done in separate triplicate experiments. Results: Dental pulp stem cells were characterized by flow cytometry. Cells treated with Ca(OH)2 (1, 2.5, and 5 mg/mL) showed significantly reduced viability compared with the control cells (p < 0.05). Dental pulp stem cells treated with 1, 2.5, and 5 mg/mL TAP resulted in a significant decrease in viability (p < 0.05). Cells treated with AKBA in concentrations (1, 0.1, and 0.01 µM) demonstrated higher viability than the control group (p < 0.05), while AKBA in concentrations (5 and 10 µM) showed equal or decreased viability than the control group. (p > 0.05). Regarding cell density assay, AKBA showed significant increase in cell density after 5 and 7 days compared with cells medicated with TAP and Ca(OH)2 while TAP revealed marked reduction in cell density in all the tested intervals. CONCLUSION Acetyl-11-keto-β-boswellic acid in lower concentrations (0.01, 0.1, and 1 µM) demonstrated superior cell viability than TAP and Ca(OH)2, and it may possess the potential to be an intracanal medicament in regenerative endodontics. CLINICAL SIGNIFICANCE Studying the effect of different potential root canal medicaments and their capability to induce DPSCs proliferation might be of value. The influence of AKBA on the viability and proliferation of DPSCs tested in this study sheds light on its use as a potential intracanal medication especially in regenerative endodontics. How to cite this article: Amer NA, Badawi MF, Elbeltagi MG, et al. Effect of Boswellic Acid on Viability of Dental Pulp Stem Cells Compared to the Commonly Used Intracanal Medications: An In Vitro Study. J Contemp Dent Pract 2023;24(12):957-966.
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Affiliation(s)
- Nouran Ahmad Amer
- Department of Endodontics, Faculty of Dentistry, Mansoura University; Horus University, Egypt, Phone: +201068857871, e-mail: , Orcid: https://orcid.org/0000-0001-6818-8626
| | - Manal Farouk Badawi
- Dental Biomaterials, Faculty of Dentistry, Mansoura University, Egypt, Orcid: https://orcid.org/0000-0001-9979-4354
| | - Mohamed Gamal Elbeltagi
- Urology and Nephrology Center, Mansoura University, Mansoura, Egypt, Orcid: https://orcid.org/0000-0003-3309-4480
| | - Amany Elsaid Badr
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Egypt, Orcid: https://orcid.org/0000-0002-3811-149X
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Ballikaya E, Çelebi-Saltik B. Approaches to vital pulp therapies. AUST ENDOD J 2023; 49:735-749. [PMID: 37515353 DOI: 10.1111/aej.12772] [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: 03/20/2023] [Revised: 06/14/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023]
Abstract
Tooth decay, which leads to pulpal inflammation due to the pulp's response to bacterial components and byproducts is the most common infectious disease. The main goals of clinical management are to eliminate sources of infection, to facilitate healing by regulating inflammation indental tissue, and to replace lost tissues. A variety of novel approaches from tissue engineering based on stem cells, bioactive molecules, and extracellular matrix-like scaffold structures to therapeutic applications, or a combination of all these are present in the literature. Shortcomings of existing conventional materials for pulp capping and the novel approches aiming to preserve pulp vitality highligted the need for developing new targeted dental materials. This review looks at the novel approches for vital pulp treatments after briefly addresing the conventional vital pulp treatment as well as the regenerative and self defense capabilities of the pulp. A narrative review focusing on the current and future approaches for pulp preservation was performed after surveying the relevant papers on vital pulp therapies including pulp capping, pulpotomy, and potential approaches for facilitating dentin-pulp complex regeneration in PubMed, Medline, and Scopus databases.
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Affiliation(s)
- Elif Ballikaya
- Department of Oral and Dental Health Research, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Department of Pediatric Dentistry, Hacettepe University Faculty of Dentistry, Ankara, Turkey
| | - Betül Çelebi-Saltik
- Department of Oral and Dental Health Research, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
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Othman NM, Elhawary YM, Elbeltagy MG, Badr AE. The Effect of Rosmarinus Officinalis as a Potential Root Canal Medication on the Viability of Dental Pulp Stem Cells. J Contemp Dent Pract 2023; 24:623-631. [PMID: 38152933 DOI: 10.5005/jp-journals-10024-3570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
AIM The objective of the current study was to assess and compare the impact of triple antibiotic paste (TAP) and calcium hydroxide (Ca(OH)2) with rosmarinic acid (RA) on the viability of dental pulp stem cells (DPSCs). MATERIALS AND METHODS Dental pulp stem cells were isolated and characterized using flow cytometry. The cells were treated with (0.25, 0.5, 1, 2.5, and 5 mg/mL) concentrations for TAP and Ca(OH)2 and (6.25, 12.5, 25, 50, and 100 µM) concentrations for RA. Cell viability was evaluated after 3 days, with cell proliferation further analyzed over 3, 5, and 7 days utilizing the MTT assay. The optical density (OD) was quantified at 570 nm, subsequently enabling the determination of corrected OD and cell viability. ANOVA followed by the post hoc Tuckey test evaluated the statistical significance at p < 0.05. RESULTS Following the cell viability test, 0.25 and 0.5 mg/mL of TAP and Ca(OH)2 showed no significant difference for DPSCs compared to the control group. While dosages of 1 mg/mL, 2.5 mg/mL, and 5 mg/mL significantly reduced cell viability (p < 0.05). However, 6.25 µM and 12.5 µM concentrations of RA showed a significant increase in cell viability compared to untreated cells, 25 µM and 50 µM concentrations showed no significant difference compared to untreated cells while 100 µM concentration showed a decrease in cell viability (p < 0.05). Moreover, RA at a concentration of 12.5 µM exhibited a significant enhancement in cell proliferation rates after 5 and 7 days. CONCLUSION Rosmarinic acid showed a significant increase in cell viability when used at 6.25 and 12.5 µM concentrations compared to TAP and CA(OH)2. CLINICAL SIGNIFICANCE The assessment of cytotoxicity associated with bioactive compounds like RA, which processes antimicrobial and anti-inflammatory properties, holds importance. This evaluation could pave the way for novel intracanal medicaments that enhance the regenerative potential of DPSCs.
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Affiliation(s)
- Nesma Mohamed Othman
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Phone: +201000011044, e-mail: , https://orcid.org/0009-0007-9756-7079
| | - Yousry Mahmoud Elhawary
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, https://orcid.org/0000-0001-7182-9551
| | - Mohamed G Elbeltagy
- Department of Stem Cells Research, Urology and Nephrology Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt, https://orcid.org/0000-0003-3309-4480
| | - Amany Elsaid Badr
- Department of Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, https://orcid.org/0000-0002-3811-149X
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Ngai P, Lee AHC, Xu J, Chang JWW, Liu J, Hu M, Sun Z, Neelakantan P, Li X, Zhang C. Effects of L-Chg 10-Teixobactin on Viability, Proliferation, and Osteo/Odontogenic Differentiation of Stem Cells from Apical Papilla. J Endod 2023; 49:162-168. [PMID: 36592717 DOI: 10.1016/j.joen.2022.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Intracanal medicament is one of the essential steps for ensuring success in regenerative endodontic procedures. L-Chg10-teixobactin is a novel antimicrobial agent that exhibited potent antibacterial and antibiofilm effects against Enterococcusfaecalis at low concentrations compared with ampicillin. At the same time, its cytotoxicity on dental stem cells has not been studied. This study aimed to investigate the effects of L-Chg10-teixobactin on the viability, proliferation, migration, and osteo/odontogenic differentiation of stem cells from apical papilla (SCAPs). MATERIALS AND METHODS SCAPs isolated from immature human third molars were treated with various concentrations of L-Chg10-teixobactin, calcium hydroxide, and dimethyl sulfoxide. The viability and proliferation of SCAPs were assessed using the LIVE/DEAD Viability/Cytotoxicity Kit and Cell Counting Kit-8. A scratch wound healing test was used to evaluate the lateral migration capacity of SCAPs. Alkaline phosphatase (ALP) activity, calcium mineralization ability tests -ie, ALP staining and alizarin red S staining, and quantitative real-time polymerase chain reaction were performed to assess the osteo /odontogenic differentiation of SCAPs. RESULTS The tested concentrations of L-Chg10-teixobactin (0.01, 0.02, and 0.03 mg/mL), 1 mg/mL calcium hydroxide, and 0.03% dimethyl sulfoxide had no significant cytotoxic effect on SCAPs at any time point (P > .05). Besides, there were no significant differences between the control and experimental groups in SCAPs' viability, proliferation, and migration. L-Chg10-teixobactin upregulated the gene expression of osteo/odontogenic markers in SCAPs, while no significant difference was found in the ALP activity and alizarin red S staining. CONCLUSIONS L-Chg10-teixobactin demonstrated excellent biocompatibility on SCAPs at concentrations from 0.01 to 0.03 mg/mL and potentially enhance the osteo/odontogenic differentiation of SCAPs; suggesting its promising role as root canal medicament for regenerative endodontic procedures.
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Affiliation(s)
- Ping Ngai
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Angeline Hui Cheng Lee
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Jian Xu
- Department of Dentistry, Longgang ENT Hospital, Shenzhen Longgang Institute of Stomatology, Shenzhen, P. R. China
| | - Jeffrey Wen Wei Chang
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Junqing Liu
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Mingxin Hu
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Zhenquan Sun
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Prasanna Neelakantan
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China
| | - Xuechen Li
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, SAR, P. R. China.
| | - Chengfei Zhang
- Restorative Dental Sciences, Endodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, P. R. China.
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Liu Y, Liu N, Na J, Li C, Yue G, Fan Y, Zheng L. Wnt/β-catenin plays a dual function in calcium hydroxide induced proliferation, migration, osteogenic differentiation and mineralization in vitro human dental pulp stem cells. Int Endod J 2023; 56:92-102. [PMID: 36229421 DOI: 10.1111/iej.13843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 12/14/2022]
Abstract
AIM Calcium hydroxide is the gold standard material for pulp capping and has been widely used in clinical dentistry. Calcium hydroxide promotes proliferation, migration and osteogenic differentiation of dental pulp stem cells (DPSCs). However, the underlying mechanism is not clear. Our study investigated the role of Wnt/β-catenin pathway in calcium hydroxide-induced proliferation, migration, osteogenic differentiation and mineralization of human DPSCs. METHODOLOGY Protein and gene expression was detected by western blot (WB), immunofluorescence staining and quantitative real-time PCR (qPCR). Cell viability was analysed using the Cell Counting Kit-8 (CCK-8) assay. Wound-healing assay was used to analyse cell migration. The expression of alkaline phosphatase (ALP) was detected using ALP staining. Mineralization was analysed by alizarin red staining. RESULTS Calcium hydroxide increased the protein expression of phosphorylated-GSK3β/GSK3β, β-catenin and the gene expression of LEF-1. Inhibition of Wnt/β-catenin abolished calcium hydroxide-induced proliferation and migration of DPSCs in 24 h. However, incubation with calcium hydroxide for 7 days and 14 days reduced Wnt/β-catenin signalling. Inhibition of Wnt/β-catenin promoted calcium hydroxide-induced osteogenic differentiation and mineralization in DPSCs. CONCLUSION Wnt/β-catenin pathway plays a dual role in calcium hydroxide-regulated DPSC behaviour. Incubation with calcium hydroxide promoted rapid proliferation and migration of DPSCs, while prolonged incubation negatively regulated osteogenic differentiation and mineralization.
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Affiliation(s)
- Yu Liu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Nan Liu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Jing Na
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Chiyu Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Gan Yue
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Lisha Zheng
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
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Silver Nanoparticles Alone or in Combination with Calcium Hydroxide Modulate the Viability, Attachment, Migration, and Osteogenic Differentiation of Human Mesenchymal Stem Cells. Int J Mol Sci 2022; 24:ijms24010702. [PMID: 36614148 PMCID: PMC9821315 DOI: 10.3390/ijms24010702] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/18/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
This study aimed to evaluate the effect of silver nanoparticles (AgNPs) alone or in combination with calcium hydroxide (Ca(OH)2) on the proliferation, viability, attachment, migration, and osteogenic differentiation of human mesenchymal stem cells (hMSCs). Different concentrations of AgNPs alone or mixed with Ca(OH)2 were prepared. Cell proliferation was measured using AlamarBlue, and hMSCs attachment to dentin disks was evaluated using scanning electron microscopy. Live-dead imaging was performed to assess apoptosis. Wound healing ability was determined using the scratch-migration assay. To evaluate osteogenic differentiation, the expression of Runt-related transcription factor (RUNX2), Transforming growth factor beta-1 (TGF-β1), Alkaline Phosphatase (ALP), and Osteocalcin (OCN) were measured using real-time reverse transcriptase polymerase chain reaction. ALP staining and activity were also performed as indicators of osteogenic differentiation. AgNPs alone seemed to favor cell attachment. Lower concentrations of AgNPs enhanced cell proliferation. AgNP groups showed markedly less apoptosis. None of the medicaments had adverse effects on wound closure. The expression of TGF-β1 was significantly upregulated in all groups, and OCN was highly expressed in the AgNP groups. AgNPs 0.06% showed the most enhanced ALP gene expression levels, activity, and marked cytochemical staining. In conclusion, AgNPs positively affect hMSCs, making them a potential biomaterial for various clinical applications.
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Zeater B, Abboud S, Hanafi L. Comparison of the Effects of TheraCal LC and Mineral Trioxide Aggregate on Direct Pulp Capping (DPC) Based on Histological Findings. Cureus 2022; 14:e25326. [PMID: 35761914 PMCID: PMC9231647 DOI: 10.7759/cureus.25326] [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] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Direct pulp capping can conserve its vitality by placing materials that promote dentin bridge (DB) formation at the exposure site. This study aimed to determine whether TheraCal LC could produce a layer of reparative dentin. It also compared the histological differences between treatment with mineral trioxide aggregate (MTA) and TheraCal LC. Material and methods: A sample of 20 maxillary and mandibular premolars, which had previously been indicated for extraction in orthodontic therapy, was taken from 10 patients and randomly divided into two halves, a TheraCal LC, and an MTA group. Pulpal exposure was achieved by similar class I preparations, which were restored with a resin-modified glass-ionomer and extracted after ten weeks, noting that these interventions have been performed on live teeth in the oral cavities. The newly formed dentin bridge thickness, the inflammation degree within the pulp tissue, and odontoblast function were thoroughly examined histologically and compared between the two groups using the Mann-Whitney test and an analysis software SPSS (statistical package for the social sciences, v.26, IBM, New York, N, USA), at a significance level of a=0.05. Results: Dentin bridge composition in the TheraCal group had 80% effective tubules and 20% defective tubules, while in the MTA group, the proportions were 90% and 10%, respectively. Dentin bridge thickness in the TheraCal group was greater than 0.25 mm in 60%, and 0.1-0.25 mm in 40% of the sample compared to the MTA group, which had 70% greater than 0.25 mm, and 30% between 0.1 and 0.25 mm in dentin bridge thickness. Statistically, there was no significant difference between both groups (P=0.739). Conclusion: Statistically insignificant differences in dentin bridge composition and thickness produced by both TheraCal and MTA materials render them similar in their effectiveness in treating pulp exposures through pulp capping.
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Kim JY, Park HH, Yong TS, Jeon SH. Lithium chloride inhibits the migration and invasion of osteosarcoma cells by blocking nuclear translocation of phospho-Erk. Biochem Biophys Res Commun 2021; 581:74-80. [PMID: 34656851 DOI: 10.1016/j.bbrc.2021.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 11/30/2022]
Abstract
Lithium chloride (LiCl) is an important mood-stabilizing therapeutic agent for bipolar disorders, which has also been shown to inhibit cancer cell metastasis. Investigations of LiCl-induced signaling have focused mainly on extracellular signal regulated kinase 1/2 (ERK1/2) and glycogen synthase kinase 3 (GSK-3). However, little is known about the differences in cellular activities resulting from specific signaling via each of these pathways. In this study, we investigated the difference in responses between the Wnt/β-catenin and ERK pathways by LiCl or epidermal growth factor (EGF) treatment of osteosarcoma cells. In particular, we analyzed the mechanisms responsible for differences in cell mobility and cell proliferation when pERK or β-catenin is activated. In osteosarcoma cells treated with LiCl or EGF, active β-catenin and p-ERK protein levels were significantly increased compared to those in the control group. However, in wound healing and transwell invasion assays, U2OS and SaOS2 cell migration was significantly reduced by LiCl treatment but increased by EGF treatment. In addition, the proliferation of U2OS cells was reduced by LiCl treatment but increased by EGF treatment. Using immunofluorescence microscopy, we observed nuclear accumulation of phosphorylated ERK (pERK) with EGF treatment, but pERK was restricted to the perinuclear area with LiCl treatment. These results were confirmed using immunoblot assays after subcellular fractionation. Together, these data suggest that LiCl interferes with the translocation of pERK from the cytoplasm to the nucleus.
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Affiliation(s)
- Ju Yeong Kim
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Hun Hee Park
- Department of Clinical Laboratory Science, Ansan University, Gyeonggi-do, 15328, South Korea
| | - Tai-Soon Yong
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, 03722, South Korea.
| | - Soung-Hoo Jeon
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, 03722, South Korea.
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Effect of Magnesium on Dentinogenesis of Human Dental Pulp Cells. Int J Biomater 2021; 2021:6567455. [PMID: 34840576 PMCID: PMC8616686 DOI: 10.1155/2021/6567455] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 10/27/2021] [Indexed: 11/23/2022] Open
Abstract
Introducing therapeutic ions into pulp capping materials has been considered a new approach for enhancing regeneration of dental tissues. However, no studies have been reported on its dentinogenic effects on human dental pulp cells (HDPCs). This study was designed to investigate the effects of magnesium (Mg2+) on cell attachment efficiency, proliferation, differentiation, and mineralization of HDPCs. HDPCs were cultured with 0.5 mM, 1 mM, 2 mM, 4 mM, and 8 mM concentrations of supplemental Mg2+ and 0 mM (control). Cell attachment was measured at 4, 8, 12, 16, and 20 hours. Cell proliferation rate was evaluated at 3, 7, 10, 14, and 21 days. Crystal violet staining was used to determine cell attachment and proliferation rate. Alkaline phosphatase (ALP) activity was assessed using the fluorometric assay at 7, 10, and 14 days. Mineralization of cultures was measured by Alizarin red staining. Statistical analysis was done using multiway analysis of variance (multiway ANOVA) with Wilks' lambda test. Higher cell attachment was shown with 0.5 mM and 1 mM at 16 hours compared to control (P < 0.0001). Cells with 0.5 mM and 1 mM supplemental Mg2+ showed significantly higher proliferation rates than control at 7, 10, 14, and 21 days (P < 0.0001). However, cell proliferation rates decreased significantly with 4 mM and 8 mM supplemental Mg2+ at 14 and 21 days (P < 0.0001). Significantly higher levels of ALP activity and mineralization were observed in 0.5 mM, 1 mM, and 2 mM supplemental Mg2+ at 10 and 14 days (P < 0.0001). However, 8 mM supplemental Mg2+ showed lower ALP activity compared to control at 14 days (P < 0.0001), while 4 mM and 8 mM supplemental Mg2+showed less mineralization compared to control (P < 0.0001). The study indicated that the optimal (0.5–2 mM) supplemental Mg2+ concentrations significantly upregulated HDPCs by enhancing cell attachment, proliferation rate, ALP activity, and mineralization. Magnesium-containing biomaterials could be considered for a future novel dental pulp-capping additive in regenerative endodontics.
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Yoshida S, Sugii H, Itoyama T, Kadowaki M, Hasegawa D, Tomokiyo A, Hamano S, Ipposhi K, Yamashita K, Maeda H. Development of a novel direct dental pulp-capping material using 4-META/MMA-TBB resin with nano hydroxyapatite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112426. [PMID: 34702511 DOI: 10.1016/j.msec.2021.112426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 01/09/2023]
Abstract
In the case of dental pulp exposure, direct pulp capping is often performed to preserve vital dental pulp tissue. Numerous studies regarding the development of direct pulp-capping materials have been conducted, but materials with an appropriate sealing ability, which induce dense reparative dentin formation, have not been developed. Although nano hydroxyapatite (naHAp) is a bone-filling material with bioactivity and biocompatibility, the inductive effects of naHAp on reparative dentin formation remain unclear. In the present study, the effects of dental adhesive material 4-methacryloxyethyl trimellitate anhydride/methyl methacrylate tri-n-butylborane [4-META/MMA-TBB or Super-bond (SB)], which included 10%, 30%, and 50% naHAp (naHAp/SB) on odontoblastic differentiation of dental pulp stem cells (DPSCs) and reparative dentin formation were investigated. Scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer analysis were performed to verify the existence of naHAp particles on the surface of naHAp/SB discs. The tensile adhesive strength of naHAp/SB was measured using a universal testing machine. As a result, 10% naHAp/SB and 30% naHAp/SB showed almost the same tensile adhesive strength as SB but 50% naHAp/SB showed significantly lower than the other experimental group. WST-1 proliferation assay and SEM analysis revealed that naHAp/SB did not affect the proliferation of DPSCs. Calcium release assay, quantitative RT-PCR, and western blotting analysis demonstrated that naHAp/SB did not release calcium ion but 30% naHAp/SB increased the expression of calcium-sensing receptor (CaSR) in DPSCs. Additionally, quantitative RT-PCR, western blotting analysis, Alizarin Red S- and von Kossa staining revealed that 30% naHAp/SB induced odontoblastic differentiation of DPSCs, which was inhibited by a MEK/ERK inhibitor and CaSR antagonist. Furthermore, 30% naHAp/SB promoted dense reparative dentin formation in an experimentally-formed rat dental pulp exposure model. These findings suggest that 30% naHAp/SB can be used as an ideal direct pulp capping material.
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Affiliation(s)
- Shinichiro Yoshida
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Hideki Sugii
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Tomohiro Itoyama
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masataka Kadowaki
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Daigaku Hasegawa
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Atsushi Tomokiyo
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; OBT Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Keita Ipposhi
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kozue Yamashita
- Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hidefumi Maeda
- Division of Endodontology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Endodontology and Operative Dentistry, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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12
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Tavsan O, Simsek N. The effects of root canal perforation repair materials on the bond strength of fiber posts. J Appl Biomater Funct Mater 2021; 19:22808000211027050. [PMID: 34615407 DOI: 10.1177/22808000211027050] [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: 11/17/2022] Open
Abstract
INTRODUCTION This study aimed to evaluate the effect of calcium hydroxide and bioceramics used in perforation repair on the bonding strength of fiber posts via a push-out test. METHODOLOGY This study used 106 extracted single-rooted human mandibular premolar teeth. Root canal preparations were performed with a rotary file system and perforations were created in the middle third of each tooth. The samples were randomized into two main experimental groups, one with calcium hydroxide and one without. Each group had four subgroups in which different bioceramic cements were applied (n = 11) and a control group (n = 9). The root canals perforations were repaired using MTA, Biodentine, Bioaggregate, and Endosequence BC root repair material. A fiber post was applied to each tooth and a push-out test was performed. The samples were examined at 40× magnification with a digital microscope in order to identify fracture type. RESULTS Bonding strength was calculated in MPa. A statistical analysis showed that the calcium hydroxide had no effect on the bonding strength of the fiber posts. A comparison of the perforation repair materials revealed that Biodentine in the calcium hydroxide group and Bioaggregate in both groups decreased the bonding strength compared to the other materials (p < 0.05). The most common failure type was adhesive failure between the dentin and resin cement (38.16%). CONCLUSIONS The use of different perforation repair materials can affect the bonding strength of fiber posts. Therefore, the choice of perforation repair material should be made on an individual basis.
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Affiliation(s)
- Oğuz Tavsan
- Department of Endodontics, Faculty of Dentistry, Usak University, Usak, Turkey
| | - Neslihan Simsek
- Department of Endodontics, Faculty of Dentistry, Inonu University, Malatya, Turkey
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13
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Peng W, Huan Z, Pei G, Li J, Cao Y, Jiang L, Zhu Y. Silicate bioceramics elicit proliferation and odonto-genic differentiation of human dental pulp cells. Dent Mater J 2021; 41:27-36. [PMID: 34408120 DOI: 10.4012/dmj.2021-042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to investigate the effects of silicates on the proliferation and odontogenic differentiation of human dental pulp cells (hDPCs) in vitro. HDPCs were cultured in the presence of calcium silicate (CS) extracts, while calcium hydroxide (CH) extracts and culture medium without CH or CS were used as the control groups. The calcium and phosphorus ion concentrations in the CS were similar to those in the control groups, but the concentration of silicon ions in the CS extracts was higher than that in the control groups. HDPCs cultured with CS and CH extracts at dilution of 1/128 proliferated significantly more than those cultured with the control treatments. CS extracts promoted cell migration, enhanced the expression of odontogenic marker genes and conspicuously increased odontogenesis-related protein production and the release of cytokines, suggesting that CS bioactive ceramics possess excellent biocompatibility and bioactivity and have the potential for application as pulp-capping agents.
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Affiliation(s)
- Weiwei Peng
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Zhiguang Huan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
| | - Ge Pei
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences.,College of Chemistry and Materials Science, Shanghai Normal University
| | - Jinheng Li
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Ying Cao
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Long Jiang
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
| | - Yaqin Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology
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Amin LE, Montaser M. Comparative evaluation of pulpal repair after direct pulp capping using stem cell therapy and biodentine: An animal study. AUST ENDOD J 2020; 47:11-19. [PMID: 33179382 DOI: 10.1111/aej.12463] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/30/2020] [Accepted: 10/21/2020] [Indexed: 11/26/2022]
Abstract
The response of the dentin-pulp complex in rat teeth was investigated after direct capping with biodentine with or without bone marrow-derived stem cells (BMDSCs). Following mechanical exposure, pulps were randomly capped with one of the followings materials: calcium hydroxide, biodentine or 1 × 105 BMDSCs mL-1 + biodentine. Histological examination was performed by light microscopy after 1, 3 and 5 weeks. Inflammatory reaction, necrotic tissue formation and calcific bridge formation were scored. Analysis showed that compared with the effects of calcium hydroxide or biodentine, BMDSCs + biodentine substantially reduced inflammatory reaction and necrotic tissue while promoting calcified tissue formation. Therefore, the combination of biodentine and BMDSCs could potentially stimulate pulp tissue regeneration after direct pulp capping.
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Affiliation(s)
- Laila E Amin
- Faculty of Dentistry, Mansoura University, Mansoura, Egypt.,Faculty of Dentistry, Horus University, Dumyat, Egypt
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15
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Biomimetic Aspects of Oral and Dentofacial Regeneration. Biomimetics (Basel) 2020; 5:biomimetics5040051. [PMID: 33053903 PMCID: PMC7709662 DOI: 10.3390/biomimetics5040051] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 12/12/2022] Open
Abstract
Biomimetic materials for hard and soft tissues have advanced in the fields of tissue engineering and regenerative medicine in dentistry. To examine these recent advances, we searched Medline (OVID) with the key terms “biomimetics”, “biomaterials”, and “biomimicry” combined with MeSH terms for “dentistry” and limited the date of publication between 2010–2020. Over 500 articles were obtained under clinical trials, randomized clinical trials, metanalysis, and systematic reviews developed in the past 10 years in three major areas of dentistry: restorative, orofacial surgery, and periodontics. Clinical studies and systematic reviews along with hand-searched preclinical studies as potential therapies have been included. They support the proof-of-concept that novel treatments are in the pipeline towards ground-breaking clinical therapies for orofacial bone regeneration, tooth regeneration, repair of the oral mucosa, periodontal tissue engineering, and dental implants. Biomimicry enhances the clinical outcomes and calls for an interdisciplinary approach integrating medicine, bioengineering, biotechnology, and computational sciences to advance the current research to clinics. We conclude that dentistry has come a long way apropos of regenerative medicine; still, there are vast avenues to endeavour, seeking inspiration from other facets in biomedical research.
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16
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Wang W, Yuan C, Liu Z, Geng T, Li X, Wei L, Niu W, Wang P. Characteristic comparison between canine and human dental mesenchymal stem cells for periodontal regeneration research in preclinical animal studies. Tissue Cell 2020; 67:101405. [PMID: 32835938 DOI: 10.1016/j.tice.2020.101405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 07/04/2020] [Accepted: 07/04/2020] [Indexed: 12/19/2022]
Abstract
The effectiveness of stem cell-based periodontal tissue engineering need to be assessed by preclinical animal studies. Dog models are widely used animal models; however, there are not sufficient data on characterization of canine dental mesenchymal stem cells. Therefore, we aimed to compare the characteristics among canine and human periodontal ligament stem cells and canine and human dental pulp stem cells. Canine periodontal ligament stem cells and dental pulp stem cells showed significantly weaker clonogenic capability, and proliferation and migration capacity, and they displayed lower positive rates for CD90, CD73, CD105, and STRO-1. All of these canine and human cells showed multilineage differentiation potential. After osteogenic induction, the expression of alkaline phosphatase was obviously upregulated in human dental mesenchymal stem cells, but it was not upregulated in canine dental pulp stem cells. Other osteogenic genes, such as runt-related transcription factor 2 and bone morphogenetic protein 2, were upregulated in all induced canine and human cells, but their upregulation occurred later in canine cells. These results confirmed the stem cell properties of canine mesenchymal stem cells, but also suggested that more attention should be paid to the choice of appropriate research approaches, osteogenic gene markers, and time points for the utilization of canine dental mesenchymal stem cells due to their distinct characteristics.
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Affiliation(s)
- Wen Wang
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Changyong Yuan
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Zongxiang Liu
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Tengyu Geng
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Xingjia Li
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Luming Wei
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China
| | - Wenzhi Niu
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China.
| | - Penglai Wang
- Xuzhou Stomatological Hospital, No. 130 Huaihai West Road, Xuzhou, 221000, Jiangsu, China; Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu, China.
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Couto RSD, Rodrigues MFSD, Ferreira LS, Diniz IMA, Silva FDS, Lopez TCC, Lima RR, Marques MM. Evaluation of Resin-Based Material Containing Copaiba Oleoresin ( Copaifera Reticulata Ducke): Biological Effects on the Human Dental Pulp Stem Cells. Biomolecules 2020; 10:biom10070972. [PMID: 32605172 PMCID: PMC7407412 DOI: 10.3390/biom10070972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/20/2020] [Accepted: 06/23/2020] [Indexed: 01/08/2023] Open
Abstract
The purpose of this study was to analyze in vitro the biological effects on human dental pulp stem cells triggered in response to substances leached or dissolved from two experimental cements for dental pulp capping. The experimental materials, based on extracts from Copaifera reticulata Ducke (COP), were compared to calcium hydroxide [Ca(OH)2] and mineral trioxide aggregate (MTA), materials commonly used for direct dental pulp capping in restorative dentistry. For this, human dental pulp stem cells were exposed to COP associated or not with Ca(OH)2 or MTA. Cell cytocompatibility, migration, and differentiation (mineralized nodule formation (Alizarin red assay) and gene expression (RT-qPCR) of OCN, DSPP, and HSP-27 (genes regulated in biomineralization events)) were evaluated. The results showed that the association of COP reduced the cytotoxicity of Ca(OH)2. Upregulations of the OCN, DSPP, and HSP-27 genes were observed in response to the association of COP to MTA, and the DSPP and HSP-27 genes were upregulated in the Ca(OH)2 + COP group. In up to 24 h, cell migration was significantly enhanced in the MTA + COP and Ca(OH)2 + COP groups. In conclusion, the combination of COP with the currently used materials for dental pulp capping [Ca(OH)2 and MTA] improved the cell activities related to pulp repair (i.e., cytocompatibility, differentiation, mineralization, and migration) including a protective effect against the cytotoxicity of Ca(OH)2.
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Affiliation(s)
- Roberta Souza D’Almeida Couto
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
- School of Dentistry, Federal University of Pará, Belém, PA 66075-110, Brazil
- Correspondence: ; Tel.: +55-091-3201-7637
| | | | - Leila Soares Ferreira
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
| | - Ivana Márcia Alves Diniz
- Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizionte, MG 31270-901, Brazil;
| | - Fernando de Sá Silva
- Departamento de Ciências da Vida, Federal University of Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil;
| | - Talita Christine Camilo Lopez
- Postgraduation Program in Biophotonics Applied to Health Sciences, Nove de Julho University, São Paulo, SP 02112-000, Brazil; (M.F.S.D.R.); (T.C.C.L.)
| | - Rafael Rodrigues Lima
- Institute of Biological Sciences, Federal University of Pará, Belém, PA 66075-110, Brazil;
| | - Márcia Martins Marques
- Department of Restorative Dentistry, School of Dentistry, University of Sao Paulo, São Paulo, SP 05508-060, Brazil; (L.S.F.); (M.M.M.)
- Post graduation course in Dentistry, Ibirapuera University, São Paulo, SP 04661-100, Brazil
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18
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Therapeutic Functions of Stem Cells from Oral Cavity: An Update. Int J Mol Sci 2020; 21:ijms21124389. [PMID: 32575639 PMCID: PMC7352407 DOI: 10.3390/ijms21124389] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/14/2020] [Accepted: 06/17/2020] [Indexed: 12/11/2022] Open
Abstract
Adult stem cells have been developed as therapeutics for tissue regeneration and immune regulation due to their self-renewing, differentiating, and paracrine functions. Recently, a variety of adult stem cells from the oral cavity have been discovered, and these dental stem cells mostly exhibit the characteristics of mesenchymal stem cells (MSCs). Dental MSCs can be applied for the replacement of dental and oral tissues against various tissue-damaging conditions including dental caries, periodontitis, and oral cancers, as well as for systemic regulation of excessive inflammation in immune disorders, such as autoimmune diseases and hypersensitivity. Therefore, in this review, we summarized and updated the types of dental stem cells and their functions to exert therapeutic efficacy against diseases.
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19
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USP1 inhibitor ML323 enhances osteogenic potential of human dental pulp stem cells. Biochem Biophys Res Commun 2020; 530:418-424. [PMID: 32546349 DOI: 10.1016/j.bbrc.2020.05.095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/14/2020] [Indexed: 12/17/2022]
Abstract
LIM homeobox 8 (LHX8) is expressed during embryonic development of craniofacial tissues, including bone and teeth. In a previous study, the overexpression of LHX8 inhibited osteodifferentiation of human dental pulp stem cells (DPSCs). In this study, a cDNA microarray analysis was performed to reveal the molecular changes which occur in response to LHX8 overexpression in DPSCs and discover possible targets for an osteoinductive agent. There were 345 differentially expressed genes (DEGs) in response to osteoinductive signaling and 53 DEGs in response to LHX8 overexpression and osteoinductive signaling, respectively. Thirty-eight genes were common in both conditions, and among these, genes upregulated in LHX8 DPSCs but downregulated in osteodifferentiated DPSCs were chosen. Five of them had commercial inhibitors available. Among the tested inhibitors, ML323, which target DNA-binding protein inhibitor ID-1, promoted osteodifferentiation of DPSCs. In conclusion, inhibition of ID-1 led to increased osteogenesis of human DPSCs.
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20
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Haugen HJ, Basu P, Sukul M, Mano JF, Reseland JE. Injectable Biomaterials for Dental Tissue Regeneration. Int J Mol Sci 2020; 21:E3442. [PMID: 32414077 PMCID: PMC7279163 DOI: 10.3390/ijms21103442] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 05/08/2020] [Indexed: 12/17/2022] Open
Abstract
Injectable biomaterials scaffolds play a pivotal role for dental tissue regeneration, as such materials are highly applicable in the dental field, particularly when compared to pre-formed scaffolds. The defects in the maxilla-oral area are normally small, confined and sometimes hard to access. This narrative review describes different types of biomaterials for dental tissue regeneration, and also discusses the potential use of nanofibers for dental tissues. Various studies suggest that tissue engineering approaches involving the use of injectable biomaterials have the potential of restoring not only dental tissue function but also their biological purposes.
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Affiliation(s)
- Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Odontology, University of Oslo, 0317 Oslo, Norway; (P.B.); (M.S.); (J.E.R.)
| | - Poulami Basu
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Odontology, University of Oslo, 0317 Oslo, Norway; (P.B.); (M.S.); (J.E.R.)
| | - Mousumi Sukul
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Odontology, University of Oslo, 0317 Oslo, Norway; (P.B.); (M.S.); (J.E.R.)
| | - João F Mano
- CICECO – Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Janne Elin Reseland
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Odontology, University of Oslo, 0317 Oslo, Norway; (P.B.); (M.S.); (J.E.R.)
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Zaen El-Din AM, Hamama HH, Abo El-Elaa MA, Grawish ME, Mahmoud SH, Neelakantan P. The effect of four materials on direct pulp capping: An animal study. AUST ENDOD J 2020; 46:249-256. [PMID: 32129919 DOI: 10.1111/aej.12400] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2020] [Indexed: 01/08/2023]
Abstract
The aim of this study was to investigate the outcomes of direct pulp capping performed with two types of tricalcium silicate-based materials (mineral trioxide aggregate/MTA and Biodentine/BD); nano-hydroxyapatite (nHAP) crystals or calcium hydroxide (CH) in dogs. Following mechanical exposure, the pulps were randomly capped with one of the four materials. Histological analyses were performed to examine the outcomes after 7 days or 3 months. At 7 days, BD and nHAP showed significantly less inflammatory cell response than MTA and CH. At 3 months, the inflammatory cell response and tissue necrosis were significantly higher in the CH group. There was no significant difference between the tested materials in the calcific bridge formation after 7 days; however, a significant difference was noticed at the 3-month period. Tricalcium silicate-based cements and nHAP are potential alternatives to CH in vital pulp therapy following accidental pulp exposure.
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Affiliation(s)
- Ahmed M Zaen El-Din
- Faculty of Dentistry, Delta University for Science and Technology, Gamasa, Egypt
| | - Hamdi H Hamama
- Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | | | - Mohammed E Grawish
- Faculty of Dentistry, Mansoura University, Mansoura, Egypt.,Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Gamasa, Egypt
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Mandakhbayar N, El-Fiqi A, Lee JH, Kim HW. Evaluation of Strontium-Doped Nanobioactive Glass Cement for Dentin–Pulp Complex Regeneration Therapy. ACS Biomater Sci Eng 2019; 5:6117-6126. [DOI: 10.1021/acsbiomaterials.9b01018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nandin Mandakhbayar
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, South Korea
| | - Ahmed El-Fiqi
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, South Korea
- Glass Research Department, National Research Centre, Cairo 12622, Egypt
| | - Jung-Hwan Lee
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, South Korea
- Glass Research Department, National Research Centre, Cairo 12622, Egypt
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan 330-714, South Korea
| | - Hae-Won Kim
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, South Korea
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan 330-714, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan 31116, Republic of Korea
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Bhargav A, Min KS, Wen Feng L, Fuh JYH, Rosa V. Taguchi's methods to optimize the properties and bioactivity of 3D printed polycaprolactone/mineral trioxide aggregate scaffold: Theoretical predictions and experimental validation. J Biomed Mater Res B Appl Biomater 2019; 108:629-637. [PMID: 31112004 DOI: 10.1002/jbm.b.34417] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/31/2019] [Accepted: 04/25/2019] [Indexed: 12/14/2022]
Abstract
Mineral trioxide aggregate (MTA) can provide bioactivity to poly-caprolactone (PCL), which is an inert polymer used to print scaffolds. However, testing all combinations of scaffold characteristics (e.g., composition, pore size, and distribution) to optimize properties of scaffolds is time-consuming and costly. The Taguchi's methods can identify characteristics that have major influences on the properties of complex designs, hence decreasing the number of combinations to be tested. The objective was to assess the potential of Taguchi's methods as a predictive tool for the optimization of bioactive scaffold printed using electro-hydro dynamic jetting. A three-level approach assessed the influence of PCL/MTA proportion, pore size, fiber dimension and number of layers in pH, degradation rate, porosity, yield strength, and Young's modulus. Data were analyzed using Tukey's honest significant difference test, analysis of mean and signal-to-noise ratio (S/N) test. Cytocompatibility and differentiation potential were assessed for 5 and 30 days using dental pulp stem cells and analyzed with one-way analysis of variance (proliferation) or Mann-Whitney (qPCR). The S/N ratio and analysis of mean showed that fiber diameter and composition were the most influential characteristics in all properties. The experimental data confirmed that the addition of MTA to PCL increased the pH and scaffold degradation. Only PCL and PCL with 4% MTA allowed cell proliferation. The latter increased the genetic expression of ALP, COL-1, OCN, and MSX-1. The theoretical predictions were confirmed by the experiments. The Taguchi's identified the inputs that can be disregarded to optimize 3D printed meshed bioactive scaffolds.
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Affiliation(s)
- Aishwarya Bhargav
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Kyung-San Min
- Department of Conservative Dentistry, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea
| | - Lu Wen Feng
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Jerry Ying Hsi Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Vinicius Rosa
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
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Cytotoxicity and Genotoxicity of a New Intracanal Medicament, 2-hydroxyisocaproic Acid–An In Vitro Study. J Endod 2019; 45:578-583. [DOI: 10.1016/j.joen.2019.01.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/09/2019] [Accepted: 01/14/2019] [Indexed: 12/18/2022]
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Braun A, Hagelauer FJP, Wenzler J, Heimer M, Frankenberger R, Stein S. Microcrack Analysis of Dental Hard Tissue After Root Canal Irradiation with a 970-nm Diode Laser. Photomed Laser Surg 2018; 36:621-628. [DOI: 10.1089/pho.2018.4470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Andreas Braun
- Department of Operative Dentistry and Endodontology, University of Marburg, Marburg, Germany
| | | | - Johannes Wenzler
- Department of Operative Dentistry and Endodontology, University of Marburg, Marburg, Germany
| | - Matthias Heimer
- Department of Operative Dentistry and Endodontology, University of Marburg, Marburg, Germany
| | - Roland Frankenberger
- Department of Operative Dentistry and Endodontology, University of Marburg, Marburg, Germany
| | - Steffen Stein
- Department of Orthodontics, University of Marburg, Marburg, Germany
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Xue W, Yu J, Chen W. Plants and Their Bioactive Constituents in Mesenchymal Stem Cell-Based Periodontal Regeneration: A Novel Prospective. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7571363. [PMID: 30175141 PMCID: PMC6098897 DOI: 10.1155/2018/7571363] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 06/12/2018] [Accepted: 07/04/2018] [Indexed: 12/24/2022]
Abstract
Periodontitis is a common chronic inflammatory disease, which causes the destruction of both the soft and mineralized tissues. However, current treatments such as bone graft materials, barrier membranes, and protein products all have difficulties in regenerating the complete periodontal tissue structure. Stem cell-based tissue engineering has now emerged as one of the most effective treatments for the patients suffering from periodontal diseases. Plants not only can be substrates for life processes, but also contain hormones or functional molecules. Numbers of preclinical studies have revealed that products from plant can be successfully applied in modulating proliferation and differentiation of human mesenchymal stem cells. Plant-derived substances can induce stem cells osteogenic differentiation, and they also possess angiogenic potency. Furthermore, in the field of tissue engineering, plant-derived compounds or plant extracts can be incorporated with biomaterials or utilized as biomaterials for cell transplantation. So it is speculated that botanical products may become a new perspective in stem cell-based periodontal regeneration. However, the lack of achieving predict clinical efficacy and quality control has been the major impediment to its extensive application. This review gives an overview of the prospect of applying different plant-derived substances in various human mesenchymal stem cells-based periodontal regeneration.
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Affiliation(s)
- Wenqing Xue
- Key Laboratory of Oral Diseases of Jiangsu Province and Stomatological Institute of Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu 210029, China
- Department of Periodontics, School of Stomatology, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu 210029, China
| | - Jinhua Yu
- Key Laboratory of Oral Diseases of Jiangsu Province and Stomatological Institute of Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu 210029, China
- Department of Endodontics, School of Stomatology, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu 210029, China
| | - Wu Chen
- Key Laboratory of Oral Diseases of Jiangsu Province and Stomatological Institute of Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu 210029, China
- Department of Periodontics, School of Stomatology, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu 210029, China
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Nemoto A, Chosa N, Kyakumoto S, Yokota S, Kamo M, Noda M, Ishisaki A. Water-soluble factors eluated from surface pre-reacted glass-ionomer filler promote osteoblastic differentiation of human mesenchymal stem cells. Mol Med Rep 2018; 17:3448-3454. [PMID: 29257332 PMCID: PMC5802126 DOI: 10.3892/mmr.2017.8287] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/21/2017] [Indexed: 12/11/2022] Open
Abstract
Surface pre-reacted glass‑ionomer (S‑PRG)-containing dental materials, including composite and coating resins have been used for the restoration and/or prevention of dental cavities. S‑PRG is known to have the ability to release aluminum, boron, fluorine, silicon, and strontium ions. Aluminum ions are known to be inhibitors whereas boron, fluorine, silicon, and strontium ions are known to be promoters of mineralization, via osteoblasts. However, it remains to be clarified how an aqueous eluate obtained from S‑PRG containing these ions affects the ability of mesenchymal stem cells (MSCs), which are known to be present in dental pulp and bone marrow, to differentiate into osteogenic cell types. The present study demonstrated that 200‑ to 1,000‑fold‑diluted aqueous eluates obtained from S‑PRG significantly upregulated the mRNA expression level of the osteogenic differentiation marker alkaline phosphatase in human MSCs (hMSCs) without exhibiting the cytotoxic effect. In addition, the 500‑ to 1,000‑fold‑diluted aqueous eluates obtained from S‑PRG significantly and clearly promoted mineralization of the extracellular matrix of hMSCs. It was additionally demonstrated that hMSCs cultured on the cured resin composites containing S‑PRG fillers exhibited osteogenic differentiation in direct correlation with the weight percent of S‑PRG fillers. These results strongly suggested that aqueous eluates of S‑PRG fillers promoted hard tissue formation by hMSCs, implicating that resins containing S‑PRG may act as a useful biomaterial to cover accidental exposure of dental pulp.
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Affiliation(s)
- Akira Nemoto
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
- Division of Operative Dentistry and Endodontics, Department of Conservative Dentistry, Iwate Medical University, Iwate 020-8505, Japan
| | - Naoyuki Chosa
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
| | - Seiko Kyakumoto
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
| | - Seiji Yokota
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
| | - Masaharu Kamo
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
| | - Mamoru Noda
- Division of Operative Dentistry and Endodontics, Department of Conservative Dentistry, Iwate Medical University, Iwate 020-8505, Japan
| | - Akira Ishisaki
- Division of Cellular Biosignal Sciences, Department of Biochemistry, Iwate Medical University, Iwate 028-3694, Japan
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Li J, Xu SQ, Zhang K, Zhang WJ, Liu HL, Xu Z, Li H, Lou JN, Ge LH, Xu BH. Treatment of gingival defects with gingival mesenchymal stem cells derived from human fetal gingival tissue in a rat model. Stem Cell Res Ther 2018; 9:27. [PMID: 29402326 PMCID: PMC5800013 DOI: 10.1186/s13287-017-0751-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/13/2017] [Accepted: 12/18/2017] [Indexed: 12/26/2022] Open
Abstract
Background The study aimed to evaluate the efficacy and safety of gingival mesenchymal stem cells (GMSCs) from human fetal gingival tissue used for treating gingival defects in a rat model. Methods GMSCs were isolated from human fetal gingival tissue and identified by flow cytometry for nestin, Oct4, vimentin, NANOG, CD105, and CD90. The immunogenicity of GMSCs was analyzed by mixed lymphocyte reactions; the tumorigenicity of GMSCs was evaluated by xenotransplanting into nude mice. The gingival defect animal model was established by mechanical resection in rats. GMSCs were transplanted into the defective area, and the regeneration of gingival tissue was observed twice weekly. Four weeks after transplantation, the gingival tissue was surgically cut down, and the graft was analyzed by immunohistochemistry staining for human mitochondrial antigens and rat CD3 and CD20. Results GMSCs from human fetal gingival tissue positively expressed nestin, Oct4, vimentin, NANOG, CD105, and CD90. There was no cell aggregation after mixed lymphocyte reactions, and interleukin-2 did not increase. Inoculation of GMSCs into nude mice for 6 months showed no tumor formation. GMSCs were transplanted into the gingiva defects of rats. One week after transplantation, the defect area was reduced, and after 3 weeks the morphology and color of local gingival tissue was similar to normal gingival tissue, and gingival height was the same as the normal control group. Conclusions Using GMSCs from human fetal gingival tissue to treat gingival defects is a safe and effective innovative treatment method.
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Affiliation(s)
- Jing Li
- Dental Medical Center, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Shi-Qing Xu
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Kai Zhang
- Dental Medical Center, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Wen-Jian Zhang
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Hong-Lin Liu
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Zhen Xu
- Dental Medical Center, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Hong Li
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Jin-Ning Lou
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Li-Hong Ge
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, People's Republic of China
| | - Bao-Hua Xu
- Dental Medical Center, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China.
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Araújo LB, Cosme-Silva L, Fernandes AP, Oliveira TMD, Cavalcanti BDN, Gomes Filho JE, Sakai VT. Effects of mineral trioxide aggregate, BiodentineTM and calcium hydroxide on viability, proliferation, migration and differentiation of stem cells from human exfoliated deciduous teeth. J Appl Oral Sci 2018; 26:e20160629. [PMID: 29412365 PMCID: PMC5777405 DOI: 10.1590/1678-7757-2016-0629] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 08/07/2017] [Indexed: 11/22/2022] Open
Abstract
The aim of the study was to evaluate the effects of the capping materials mineral trioxide aggregate (MTA), calcium hydroxide (CH) and BiodentineTM (BD) on stem cells from human exfoliated deciduous teeth (SHED) in vitro. SHED were cultured for 1 - 7 days in medium conditioned by incubation with MTA, BD or CH (1 mg/mL), and tested for viability (MTT assay) and proliferation (SRB assay). Also, the migration of serum-starved SHED towards conditioned media was assayed in companion plates, with 8 μm-pore-sized membranes, for 24 h. Gene expression of dentin matrix protein-1 (DMP-1) was evaluated by reverse-transcription polymerase chain reaction. Regular culture medium with 10% FBS (without conditioning) and culture medium supplemented with 20% FBS were used as controls. MTA, CH and BD conditioned media maintained cell viability and allowed continuous SHED proliferation, with CH conditioned medium causing the highest positive effect on proliferation at the end of the treatment period (compared with BD and MTA) (p<0.05). In contrast, we observed increased SHED migration towards BD and MTA conditioned media (compared with CH) (p<0.05). A greater amount of DMP-1 gene was expressed in MTA group compared with the other groups from day 7 up to day 21. Our results show that the three capping materials are biocompatible, maintain viability and stimulate proliferation, migration and differentiation in a key dental stem cell population.
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Affiliation(s)
- Leandro Borges Araújo
- Universidade Federal de Alfenas, Faculdade de Odontologia, Departamento de Clínica e Cirurgia, Alfenas, Minas Gerais, Brasil
| | - Leopoldo Cosme-Silva
- Universidade Federal de Alfenas, Faculdade de Odontologia, Departamento de Clínica e Cirurgia, Alfenas, Minas Gerais, Brasil.,Univ. Estadual Paulista, Faculdade de Odontologia, Departamento de Odontologia Restauradora, Araçatuba, São Paulo, Brasil
| | - Ana Paula Fernandes
- Universidade Federal de Alfenas, Faculdade de Odontologia, Departamento de Clínica e Cirurgia, Alfenas, Minas Gerais, Brasil.,Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Thais Marchini de Oliveira
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Odontopediatria, Ortodontia e Saúde Coletiva, Bauru, São Paulo, Brasil
| | | | - João Eduardo Gomes Filho
- Univ. Estadual Paulista, Faculdade de Odontologia, Departamento de Odontologia Restauradora, Araçatuba, São Paulo, Brasil
| | - Vivien Thiemy Sakai
- Universidade Federal de Alfenas, Faculdade de Odontologia, Departamento de Clínica e Cirurgia, Alfenas, Minas Gerais, Brasil
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Mandakhbayar N, El-Fiqi A, Dashnyam K, Kim HW. Feasibility of Defect Tunable Bone Engineering Using Electroblown Bioactive Fibrous Scaffolds with Dental Stem Cells. ACS Biomater Sci Eng 2018; 4:1019-1028. [DOI: 10.1021/acsbiomaterials.7b00810] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Nandin Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, South Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, South Korea
| | - Ahmed El-Fiqi
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, South Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, South Korea
- Glass Research Department, National Research Center, Cairo 12622, Egypt
| | - Khandmaa Dashnyam
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, South Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, South Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, South Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, South Korea
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan 330-714, South Korea
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Liu Z, Chen T, Han Q, Chen M, You J, Fang F, Peng L, Wu B. HDAC inhibitor LMK‑235 promotes the odontoblast differentiation of dental pulp cells. Mol Med Rep 2017; 17:1445-1452. [PMID: 29138868 PMCID: PMC5780081 DOI: 10.3892/mmr.2017.8055] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 08/18/2017] [Indexed: 01/07/2023] Open
Abstract
The role of dental pulp cells (DPCs) in hard dental tissue regeneration had received increasing attention because DPCs can differentiate into odontoblasts and other tissue‑specific cells. In recent years, epigenetic modifications had been identified to serve an important role in cell differentiation, and histone deacetylase (HDAC) inhibitors have been widely studied by many researchers. However, the effects of HDAC4 and HDAC5 on the differentiation of DPCs and the precise molecular mechanisms remain unclear. The present study demonstrated that LMK‑235, a specific human HDAC4 and HDAC5 inhibitor, increased the expression of specific odontoblastic gene expression levels detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) in dental pulp cells, and did not reduce cell proliferation tested by MTT assay after 3 days in culture at a low concentration. In addition, the mRNA and protein expression levels of dentin sialophosphoprotein, runt‑related transcription factor 2, alkaline phosphatase (ALP) and osteocalcin were evaluated by RT‑qPCR and western blotting, respectively. The increased gene and protein expression of specific markers demonstrated, indicating that LMK‑235 promoted the odontoblast induction of DPCs. ALP activity and mineralised nodule formation were also enhanced due to the effect of LMK‑235, detected by an ALP activity test and Alizarin Red S staining, respectively. Additionally, the vascular endothelial growth factor (VEGF)/RAC‑gamma serine/threonine‑protein kinase (AKT)/mechanistic target of rapamycin (mTOR) signalling pathway was tested to see if it takes part in the differentiation of DPCs treated with LMK‑235, and it was demonstrated that the mRNA expression levels of VEGF, AKT and mTOR were upregulated. These findings indicated that LMK‑235 may serve a key role in the proliferation and odontoblast differentiation of DPCs, and could be used to accelerate dental tissue regeneration.
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Affiliation(s)
- Zhao Liu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Ting Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Qianqian Han
- Department of Periodontics, Stomatology Hospital of Guangdong Province, Guangzhou, Guangdong 510260, P.R. China
| | - Ming Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jie You
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Fuchun Fang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Ling Peng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Buling Wu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Biocompatibility of New Pulp-capping Materials NeoMTA Plus, MTA Repair HP, and Biodentine on Human Dental Pulp Stem Cells. J Endod 2017; 44:126-132. [PMID: 29079052 DOI: 10.1016/j.joen.2017.07.017] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/23/2017] [Accepted: 07/24/2017] [Indexed: 01/09/2023]
Abstract
INTRODUCTION The aim of the present study was to evaluate the in vitro cytotoxicity of MTA Repair HP, NeoMTA Plus, and Biodentine, new bioactive materials used for dental pulp capping, on human dental pulp stem cells (hDPSCs). METHODS Biological testing was carried out in vitro on hDPSCs. Cell viability and cell migration assays were performed using eluates of each capping material. To evaluate cell morphology and cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy. The chemical composition of the pulp-capping materials was determined by energy-dispersive X-ray and eluates were analyzed by inductively coupled plasma-mass spectrometry. Statistical differences were assessed by analysis of variance and Tukey test (P < .05). RESULTS Cell viability was moderate after 24 and 48 hours in the presence of MTA Repair HP and NeoMTA Plus, whereas at 48 and 72 hours, Biodentine showed higher rates of cell viability than MTA Repair HP and NeoMTA Plus (P < .001). A cell migration assay revealed adequate cell migration rates for MTA Repair HP and NeoMTA Plus, both similar to the control group rates, meanwhile the highest cell migration rate was observed in the presence of Biodentine (P < .001). Scanning electron microscope studies showed a high degree of cell proliferation and adhesion on Biodentine disks but moderate rates on MTA Repair HP and NeoMTA Plus disks. Energy-dispersive X-ray pointed to similar weight percentages of C, O, and Ca in all 3 materials, whereas other elements such as Al, Si, and S were also found. CONCLUSIONS The new pulp-capping materials MTA Repair HP, NeoMTA Plus, and Biodentine showed a suitable degree of cytocompatibility with hDPSCs, and good cell migration rates, although Biodentine showed higher rates of proliferation time-dependent.
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Mizumachi H, Yoshida S, Tomokiyo A, Hasegawa D, Hamano S, Yuda A, Sugii H, Serita S, Mitarai H, Koori K, Wada N, Maeda H. Calcium-sensing receptor-ERK signaling promotes odontoblastic differentiation of human dental pulp cells. Bone 2017; 101:191-201. [PMID: 28506888 DOI: 10.1016/j.bone.2017.05.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 01/09/2023]
Abstract
Activation of the G protein-coupled calcium-sensing receptor (CaSR) has crucial roles in skeletal development and bone turnover. Our recent study has identified a role for activated CaSR in the osteogenic differentiation of human periodontal ligament stem cells. Furthermore, odontoblasts residing inside the tooth pulp chamber play a central role in dentin formation. However, it remains unclear how CaSR activation affects the odontoblastic differentiation of human dental pulp cells (HDPCs). We have investigated the odontoblastic differentiation of HDPCs exposed to elevated levels of extracellular calcium (Ca) and strontium (Sr), and the contribution of CaSR and the L-type voltage-dependent calcium channel (L-VDCC) to this process. Immunochemical staining of rat dental pulp tissue demonstrated that CaSR was expressed at high levels in the odontoblastic layer, moderate levels in the sublayer, and low levels in the central pulp tissue. Although normal HDPCs expressed low levels of CaSR, stimulation with Ca or Sr promoted both CaSR expression and odontoblastic differentiation of HDPCs along with increased expression of odontoblastic makers. These effects were inhibited by treatment with a CaSR antagonist, whereas treatment with an L-VDCC inhibitor had no effect. Additionally, knockdown of CaSR with siRNA suppressed odontoblastic differentiation of Ca- and Sr-treated HDPCs. ERK1/2 phosphorylation was observed in Ca- and Sr-treated HDPCs, whereas CaSR antagonist treatment or CaSR knockdown blocked ERK1/2 phosphorylation. Furthermore, inhibition of ERK1/2 suppressed mineralization of Ca- and Sr-treated HDPCs. These results suggest that elevated concentrations of extracellular Ca and Sr induce odontoblastic differentiation of HDPCs through CaSR activation and the ERK1/2 phosphorylation.
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Affiliation(s)
- Hiroyuki Mizumachi
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Shinichiro Yoshida
- Division of Endodontology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Atsushi Tomokiyo
- Division of Endodontology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Daigaku Hasegawa
- Division of Endodontology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Sayuri Hamano
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Asuka Yuda
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Hideki Sugii
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Suguru Serita
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Hiromi Mitarai
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Katsuaki Koori
- Division of Endodontology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Naohisa Wada
- Division of General Dentistry, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Hidefumi Maeda
- Department of Endodontology and Operative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan; Division of Endodontology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan.
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Characterization of Chlorhexidine-Loaded Calcium-Hydroxide Microparticles as a Potential Dental Pulp-Capping Material. Bioengineering (Basel) 2017; 4:bioengineering4030059. [PMID: 28952538 PMCID: PMC5615305 DOI: 10.3390/bioengineering4030059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 12/02/2022] Open
Abstract
This study explores the delivery of novel calcium hydroxide [Ca(OH)2] microparticles loaded with chlorhexidine (CHX) for potential dental therapeutic and preventive applications. Herein, we introduce a new approach for drug-delivery to deep dentin-surfaces in the form of drug-loaded microparticles. Unloaded Ca(OH)2 [Ca(OH)2/Blank] and CHX-loaded/Ca(OH)2 microparticles were fabricated by aqueous chemical-precipitation technique. The synthesized-microparticles were characterized in vitro for determination of surface-morphology, crystalline-features and thermal-properties examined by energy-dispersive X-ray scanning and transmission electron-microscopy (EDX-SEM/TEM), Fourier-transform infrared-spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning-calorimetry (DSC). Time-related pH changes, initial antibacterial/biofilm-abilities and cytotoxicity of CHX-loaded/Ca(OH)2 microparticles were evaluated. Microparticles were delivered to dentin-surfaces with subsequent SEM examination of treated dentin-substrates. The in vitro and ex vivo CHX-release profiles were characterized. Ca(OH)2/Blank were hexagonal-shaped with highest z-average diameter whereas CHX-inclusion evidenced micro-metric spheres with distinguishable surface “rounded deposits” and a negative-shift in diameter. CHX:Ca(OH)2/50 mg exhibited maximum encapsulation-efficiency with good antibacterial and cytocompatible properties. SEM examination revealed an intact layer of microparticles on exposed dentin-surfaces with retention of spherical shape and smooth texture. Microparticles loaded on dentin-surfaces showed prolonged release of CHX indicating substantial retention on dentin-substrates. This study validated the inherent-applicability of this novel drug-delivery approach to dentin-surfaces using micro-metric CHX-loaded/Ca(OH)2 microparticles.
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Lu Y, Lin T, Liu Y, Bao L, Wu Y. [Effect of bone morphogenetic protein 2 and dexamethason on proliferation and differentiation of human dental pulp cells in vitro]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2017; 31:738-744. [PMID: 29798658 DOI: 10.7507/1002-1892.201701072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To investigate the effect of bone morphogenetic protein 2 (BMP-2) and dexamethason (DXM) on proliferation and differentiation of human dental pulp cells in vitro. Methods Primary human dental pulp cells were cultured in vitro by tissue culture method. The 3rd generation cells were used to identify cell phenotype for vimentin and cytokeratin by immunocytochemistry staining. The 3-5 generations of human dental pulp cells were randomly divided into 4 groups: 100 ng/mL BMP-2 (group A), 1×10 -8 mol/L DXM (group B), and both 100 ng/mL BMP-2 and 1×10 -8 mol/L DXM (group C) were added; neither BMP-2 nor DXM was added in group D as control group. The cell growth curve was drawn at 1, 3, 5, and 7 days after culture. The expressions of osteo/dentanogenic genes including alkaline phosphatase (ALP), dentin sialophoshoprotein (DSPP), and dentin matrix protein 1 (DMP-1) were detected by RT-PCR analysis at 5 and 7 days after culture, the ratio between the positive staining area and the total area by ALP staining at 14 days, and absorbance ( A) value at 562 nm by alizarin red staining at 21 days after culture. Results Human dental pulp cells were successfully isolated and cultured, which were long fusiform and showed a positive reaction for vimentin and a negative reaction for cytokeratin. The growth curve indicated that cells increased with the extending of incubation time, reached a peak at 5 days, then reduced at 7 days to the level at 3 days. At 5 days after culture, the cells were significantly more in groups A, B, and C than group D ( P<0.05), in group C than group A ( P<0.05), and in group A than group B ( P<0.05). RT-PCR analysis showed that the mRNA expressions of ALP, DSPP, and DMP-1 at 5 days were significantly higher in groups A, B, and C than group D ( P<0.05), and in group C than groups A and B ( P<0.05), but no significant difference was found between groups A and B ( P>0.05); the mRNA expression of DSPP in groups A, B, and C was significantly higher than that in group D ( P<0.05), but there was no significant difference in mRNA expressions between other groups at 7 days ( P>0.05). At 14 days, positive staining in varying degrees was observed in each group, especially in group C; the ratio between the positive staining area and the total area was significantly higher in group C than groups A, B, and D ( P<0.05), and in groups A and B than group D ( P<0.05), but there was no significant difference between groups A and B ( P>0.05). At 21 days, there were a variety of mineralized nodules in groups A, B, and C in nonuniformly scattered or clustered distribution, but no mineralized nodules were observed in group D. The A values of mineralized nodules showed significant difference between groups ( P<0.05). Conclusion BMP-2 may be more effective in promoting proliferation of human dental pulp cells than DXM. Combined application of BMP-2 and DXM can remarkably promote the proliferation and differentiation of human dental pulp cells.
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Affiliation(s)
- Yanling Lu
- Guangxi Medical University, Nanning Guangxi, 530021, P.R.China
| | - Tian Lin
- Guangxi Medical University, Nanning Guangxi, 530021, P.R.China
| | - Yuying Liu
- Guangxi Medical University, Nanning Guangxi, 530021, P.R.China
| | - Lirong Bao
- Guangxi Medical University, Nanning Guangxi, 530021, P.R.China
| | - Yu Wu
- Pediatric Dentistry Department, College of Stomatology, Guangxi Medical University, Nanning Guangxi, 530021,
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Hierarchically Micro- and Nanopatterned Topographical Cues for Modulation of Cellular Structure and Function. IEEE Trans Nanobioscience 2016; 15:835-842. [PMID: 28026780 DOI: 10.1109/tnb.2016.2631641] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Living cells receive biochemical and physical information from the surrounding microenvironment and respond to this information. Multiscale hierarchical substrates with micro- and nanogrooves have been shown to mimic the native extracellular matrix (ECM) better than conventional nanopatterned substrates; therefore, substrates with hierarchical topographical cues are considered suitable for investigating the role of physical factors in tissue functions. In this study, precisely controllable, multiscale hierarchical substrates that could mimic the micro- and nanotopography of complex ECMs were fabricated and used to culture various cell types, including fibroblasts, endothelial cells, osteoblasts, and human mesenchymal stem cells. These substrates had both microscale wrinkles and nanoscale patterns and enhanced the alignment and elongation of all the cells tested. In particular, the nanotopography on the microscale wrinkles promoted not only the adhesion, but also the functions of the cells. These findings suggest that the hierarchical multiscale substrates effectively regulated cellular structure and functions and that they can be used as a platform for tissue engineering and regenerative medicine.
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Javed F, Kellesarian SV, Abduljabbar T, Gholamiazizi E, Feng C, Aldosary K, Vohra F, Romanos GE. Role of laser irradiation in direct pulp capping procedures: a systematic review and meta-analysis. Lasers Med Sci 2016; 32:439-448. [DOI: 10.1007/s10103-016-2077-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 09/12/2016] [Indexed: 12/26/2022]
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Calcium Hydroxide–induced Proliferation, Migration, Osteogenic Differentiation, and Mineralization via the Mitogen-activated Protein Kinase Pathway in Human Dental Pulp Stem Cells. J Endod 2016; 42:1355-61. [DOI: 10.1016/j.joen.2016.04.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/13/2016] [Accepted: 04/20/2016] [Indexed: 12/17/2022]
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Saghiri MA, Asatourian A, Garcia-Godoy F, Sheibani N. Effect of biomaterials on angiogenesis during vital pulp therapy. Dent Mater J 2016; 35:701-709. [PMID: 27546854 DOI: 10.4012/dmj.2015-332] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This review intended to provide an overview of the effects of dental materials, used in dentin-pulp complex and dental pulp regeneration, on angiogenesis processes during regenerative endodontic procedures. An electronic search was performed in PubMed and MEDLINE databases via OVID using the keywords mentioned in the PubMed and MeSH headings for English language published articles from January 2005-April 2014 that evaluated the angiogenic properties of different dental materials used in regenerative endodontic procedures. Of the articles identified in an initial search, only 40 articles met the inclusion criteria set for this review. Vital pulp therapy materials might have positive effects on angiogenesis events, while most of the canal irrigating solutions and antibiotic pastes have anti-angiogenic activity except for EDTA. Future clinical studies will be helpful in defining the mechanisms of action for dental materials that promote or inhibit angiogenesis events at applied areas.
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Affiliation(s)
- Mohammad Ali Saghiri
- Departments of Ophthalmology and Visual Science and Biomedical Engineering, University of Wisconsin, School of Medicine and Public Health
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Antibiofilm efficacy of photoactivated curcumin, triple and double antibiotic paste, 2% chlorhexidine and calcium hydroxide against Enterococcus fecalis in vitro. Sci Rep 2016; 6:24797. [PMID: 27097667 PMCID: PMC4838845 DOI: 10.1038/srep24797] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 04/05/2016] [Indexed: 01/12/2023] Open
Abstract
Root canal disinfection is one of the most important factors governing success of root canal treatment, especially when regenerative strategies are used. This study evaluated the efficacy of 5 intracanal medicaments against mature biofilms of Enterococcus fecalis in vitro: Light activated curcumin, triple antibiotic paste (TAP), double antibiotic paste (DAP), chlorhexidine, calcium hydroxide. Untreated teeth with biofilms served as controls. Confocal microscopy was used to analyse the biofilm mass and percentage of live/dead bacteria within the root canal as well as dentinal tubules. Dentinal shavings obtained from the root canal walls (at 200 and 400 microns depth) were used to quantify the colony forming units/mL. The results showed that light activated curcumin and triple antibiotic paste brought about complete disruption of the biofilm structure (P < 0.05) while chlorhexidine and calcium hydroxide were not significantly different from the control (P > 0.05). Light activated curcumin brought about the highest percentage of dead cells at both depths, but this was not significantly different from triple antibiotic paste (P > 0.05). Curcumin, TAP and DAP brought about a significant reduction of CFU/mL at both depths compared to the control and other groups (P < 0.05). Light activated curcumin brought about a 7 log reduction of bacteria at both depths.
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Cryopreservation and Banking of Dental Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 951:199-235. [DOI: 10.1007/978-3-319-45457-3_17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Gładysz D, Hozyasz KK. Stem cell regenerative therapy in alveolar cleft reconstruction. Arch Oral Biol 2015; 60:1517-32. [PMID: 26263541 DOI: 10.1016/j.archoralbio.2015.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 05/23/2015] [Accepted: 07/04/2015] [Indexed: 12/17/2022]
Abstract
Achieving a successful and well-functioning reconstruction of craniofacial deformities still remains a challenge. As for now, autologous bone grafting remains the gold standard for alveolar cleft reconstruction. However, its aesthetic and functional results often remain unsatisfactory, which carries a long-term psychosocial and medical sequelae. Therefore, searching for novel therapeutic approaches is strongly indicated. With the recent advances in stem cell research, cell-based tissue engineering strategies move from the bench to the patients' bedside. Successful stem cell engineering employs a carefully selected stem cell source, a biodegradable scaffold with osteoconductive and osteoinductive properties, as well as an addition of growth factors or cytokines to enhance osteogenesis. This review highlights recent advances in mesenchymal stem cell tissue engineering, discusses animal models and case reports of stem cell enhanced bone regeneration, as well as ongoing clinical trials.
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Affiliation(s)
- Dominika Gładysz
- Department of Pediatrics, Institute of Mother and Child, Warsaw, Poland
| | - Kamil K Hozyasz
- Department of Pediatrics, Institute of Mother and Child, Warsaw, Poland.
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Ishimoto K, Hayano S, Yanagita T, Kurosaka H, Kawanabe N, Itoh S, Ono M, Kuboki T, Kamioka H, Yamashiro T. Topical application of lithium chloride on the pulp induces dentin regeneration. PLoS One 2015; 10:e0121938. [PMID: 25812134 PMCID: PMC4374937 DOI: 10.1371/journal.pone.0121938] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/06/2015] [Indexed: 12/23/2022] Open
Abstract
We herein describe a novel procedure for dentin regeneration that mimics the biological processes of tooth development in nature. The canonical Wnt signaling pathway is an important regulator of the Dentin sialophosphoprotein (Dspp) expression. Our approach mimics the biological processes underlying tooth development in nature and focuses on the activation of canonical Wnt signaling to trigger the natural process of dentinogenesis. The coronal portion of the dentin and the underlying pulp was removed from the first molars. We applied lithium chloride (LiCl), an activator of canonical Wnt signaling, on the amputated pulp surface to achieve transdifferentiation toward odontoblasts from the surrounding pulpal cells. MicroCT and microscopic analyses demonstrated that the topical application of LiCl induced dentin repair, including the formation of a complete dentin bridge. LiCl-induced dentin is a tubular dentin in which the pulp cells are not embedded within the matrix, as in primary dentin. In contrast, a dentin bridge was not induced in the control group treated with pulp capping with material carriers alone, although osteodentin without tubular formation was induced at a comparatively deeper position from the pulp exposure site. We also evaluated the influence of LiCl on differentiation toward odontoblasts in vitro. In the mDP odontoblast cell line, LiCl activated the mRNA expression of Dspp, Axin2 and Kallikrein 4 (Klk4) and downregulated the Osteopontin (Osp) expression. These results provide a scientific basis for the biomimetic regeneration of dentin using LiCl as a new capping material to activate dentine regeneration.
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Affiliation(s)
- Kazuya Ishimoto
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Satoru Hayano
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takeshi Yanagita
- Department of Orthodontics, Okayama University Hospital, Okayama, Japan
| | - Hiroshi Kurosaka
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Noriaki Kawanabe
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Shinsuke Itoh
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Mitsuaki Ono
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Hiroshi Kamioka
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
| | - Takashi Yamashiro
- Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical sciences, Okayama, Japan
- * E-mail:
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Cementum and Periodontal Ligament Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 881:207-36. [PMID: 26545752 DOI: 10.1007/978-3-319-22345-2_12] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The unique anatomy and composition of the periodontium make periodontal tissue healing and regeneration a complex process. Periodontal regeneration aims to recapitulate the crucial stages of wound healing associated with periodontal development in order to restore lost tissues to their original form and function and for regeneration to occur, healing events must progress in an ordered and programmed sequence both temporally and spatially, replicating key developmental events. A number of procedures have been employed to promote true and predictable regeneration of the periodontium. Principally, the approaches are based on the use of graft materials to compensate for the bone loss incurred as a result of periodontal disease, use of barrier membranes for guided tissue regeneration and use of bioactive molecules. More recently, the concept of tissue engineering has been integrated into research and applications of regenerative dentistry, including periodontics, to aim to manage damaged and lost oral tissues, through reconstruction and regeneration of the periodontium and alleviate the shortcomings of more conventional therapeutic options. The essential components for generating effective cellular based therapeutic strategies include a population of multi-potential progenitor cells, presence of signalling molecules/inductive morphogenic signals and a conductive extracellular matrix scaffold or appropriate delivery system. Mesenchymal stem cells are considered suitable candidates for cell-based tissue engineering strategies owing to their extensive expansion rate and potential to differentiate into cells of multiple organs and systems. Mesenchymal stem cells derived from multiple tissue sources have been investigated in pre-clinical animal studies and clinical settings for the treatment and regeneration of the periodontium.
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Pulp revascularization of immature permanent teeth: a review of the literature and a proposal of a new clinical protocol. ScientificWorldJournal 2014; 2014:737503. [PMID: 25383384 PMCID: PMC4212590 DOI: 10.1155/2014/737503] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/21/2014] [Indexed: 12/29/2022] Open
Abstract
Tissue engineering is a growing field. In the near future, it will probably be possible to generate a complete vital tooth from a single stem cell. Pulp revascularization is dependent on the ability of residual pulp and apical and periodontal stem cells to differentiate. These cells have the ability to generate a highly vascularized and a conjunctive rich living tissue. This one is able to colonize the available pulp space. Revascularization is a new treatment method for immature necrotic permanent teeth. Up to now, apexification procedures were applied for these teeth, using calcium dihydroxide or MTA to produce an artificial apical barrier. However, the pulp revascularization allows the stimulation of the apical development and the root maturation of immature teeth. Two pulp revascularization techniques are used in the literature, one using calcium dihydroxide and the second using a triple antibiotic paste. Based on these two different pulp revascularization protocols, which obtain the desired therapeutic success, the literature will be reviewed and analyzed according to the relevance of their choice of materials. Based on the literature, we propose a new relevant protocol and a new mixture of antibiotics.
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Phenotypic and proteomic characteristics of human dental pulp derived mesenchymal stem cells from a natal, an exfoliated deciduous, and an impacted third molar tooth. Stem Cells Int 2014; 2014:457059. [PMID: 25379041 PMCID: PMC4212660 DOI: 10.1155/2014/457059] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 09/03/2014] [Accepted: 09/18/2014] [Indexed: 12/14/2022] Open
Abstract
The level of heterogeneity among the isolated stem cells makes them less valuable for clinical use. The purpose of this study was to understand the level of heterogeneity among human dental pulp derived mesenchymal stem cells by using basic cell biology and proteomic approaches. The cells were isolated from a natal (NDPSCs), an exfoliated deciduous (stem cells from human exfoliated deciduous (SHED)), and an impacted third molar (DPSCs) tooth of three different donors. All three stem cells displayed similar features related to morphology, proliferation rates, expression of various cell surface markers, and differentiation potentials into adipocytes, osteocytes, and chondrocytes. Furthermore, using 2DE approach coupled with MALDI-TOF/TOF, we have generated a common 2DE profile for all three stem cells. We found that 62.3 ± 7% of the protein spots were conserved among the three mesenchymal stem cell lines. Sixty-one of these conserved spots were identified by MALDI-TOF/TOF analysis. Classification of the identified proteins based on biological function revealed that structurally important proteins and proteins that are involved in protein folding machinery are predominantly expressed by all three stem cell lines. Some of these proteins may hold importance in understanding specific properties of human dental pulp derived mesenchymal stem cells.
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Berkhoff JA, Chen PB, Teixeira FB, Diogenes A. Evaluation of Triple Antibiotic Paste Removal by Different Irrigation Procedures. J Endod 2014; 40:1172-7. [DOI: 10.1016/j.joen.2013.12.027] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 11/08/2013] [Accepted: 12/29/2013] [Indexed: 11/28/2022]
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Li Y, Shu LH, Yan M, Dai WY, Li JJ, Zhang GD, Yu JH. Adult stem cell-based apexogenesis. World J Methodol 2014; 4:99-108. [PMID: 25332909 PMCID: PMC4202485 DOI: 10.5662/wjm.v4.i2.99] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 01/04/2014] [Accepted: 03/14/2014] [Indexed: 02/06/2023] Open
Abstract
Generally, the dental pulp needs to be removed when it is infected, and root canal therapy (RCT) is usually required in which infected dental pulp is replaced with inorganic materials (paste and gutta percha). This treatment approach ultimately brings about a dead tooth. However, pulp vitality is extremely important to the tooth itself, since it provides nutrition and acts as a biosensor to detect the potential pathogenic stimuli. Despite the reported clinical success rate, RCT-treated teeth are destined to be devitalized, brittle and susceptible to postoperative fracture. Recently, the advances and achievements in the field of stem cell biology and regenerative medicine have inspired novel biological approaches to apexogenesis in young patients suffering from pulpitis or periapical periodontitis. This review mainly focuses on the benchtop and clinical regeneration of root apex mediated by adult stem cells. Moreover, current strategies for infected pulp therapy are also discussed here.
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Differences of isolated dental stem cells dependent on donor age and consequences for autologous tooth replacement. Arch Oral Biol 2014; 59:559-67. [DOI: 10.1016/j.archoralbio.2014.02.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/28/2014] [Accepted: 02/24/2014] [Indexed: 01/09/2023]
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Labban N, Yassen GH, Windsor LJ, Platt JA. The direct cytotoxic effects of medicaments used in endodontic regeneration on human dental pulp cells. Dent Traumatol 2014; 30:429-34. [DOI: 10.1111/edt.12108] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Nawaf Labban
- Department of Prosthetic Dental Science; King Saud University; Riyadh Saudi Arabia
- Department of Oral Biology; Indiana University School of Dentistry; Indianapolis IN USA
| | - Ghaeth H. Yassen
- Department of Pediatric; Orthodontic and Preventive Dentistry; Mosul University School of Dentistry; Mosul Iraq
- Department of Restorative Dentistry; Division of Dental Biomaterials; Indiana University School of Dentistry; Indianapolis IN USA
| | - L. Jack Windsor
- Department of Oral Biology; Indiana University School of Dentistry; Indianapolis IN USA
| | - Jeffrey A. Platt
- Department of Restorative Dentistry; Division of Dental Biomaterials; Indiana University School of Dentistry; Indianapolis IN USA
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