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Mumcu AK, Kurnaz S, Kiraz G, Gündüz MK. Comparative effects of 17% ethylenediaminetetraacetic acid and 9% etidronic acid applied with different irrigant activation techniques on the release of growth factors from dentin: in vitro study. BMC Oral Health 2024; 24:612. [PMID: 38802852 PMCID: PMC11131224 DOI: 10.1186/s12903-024-04336-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/06/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND Growth factors embedded in the extracellular matrix of the dentin play an important role in the migration, proliferation, and differentiation of dental pulp stem cells in regenerative endodontics. In regenerative endodontic treatments, the type of irrigation solution used is crucial for the release of growth factors (GFs) from the dentin matrix. This study evaluated the effectiveness of different irrigant activation techniques (IAT) using two different chelating agents, 17% ethylenediaminetetraacetic acid (EDTA) and 9% etidronic acid (HEDP), in terms of their GF release. METHODS Seventy-two mandibular premolar teeth were prepared to simulate an open apex. The root fragments were irrigated with 20 ml of 1.5% sodium hypochlorite and 20 ml of saline solution. Eight root fragments were randomly separated for the control group, and the remaining 64 fragments were randomly separated into eight groups based on two different chelating agents (17% EDTA and 9% HEDP) and four different IAT ((conventional needle irrigation (CNI), passive ultrasonic irrigation (PUI), sonic activation with EDDY, and XP-endo Finisher (XPF)). TGF-β1, VEGF-A, BMP-7 and IGF-1 release levels were determined using an ELISA, and statistical analysis was performed using the Kolmogorov-Smirnov test, ANOVA, and the Tukey test (p < .05). RESULTS Compared to the control group, the experimental groups showed significantly higher GF release when using EDTA or HEDP. Among the activation groups, the EDDY group triggered the highest GF release, and the CNI group triggered the lowest. CONCLUSIONS IAT with EDTA and HEDP can increase GF release, with EDDY being the most effective IAT method. Using chelating agents with IAT may be beneficial in regenerative endodontic treatments.
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Affiliation(s)
- Arzu Kaya Mumcu
- Department of Endodontics, Faculty of Dentistry, Kutahya Health Sciences University, Kutahya, Türkiye.
| | - Safa Kurnaz
- Department of Endodontics, Faculty of Dentistry, Kutahya Health Sciences University, Kutahya, Türkiye
| | - Gülsen Kiraz
- Department of Endodontics, Faculty of Dentistry, Kutahya Health Sciences University, Kutahya, Türkiye
| | - Meliha Koldemir Gündüz
- Department of Basic Sciences of Engineering, Faculty of Engineering and Natural Sciences, Kutahya Health Sciences University, Kutahya, Türkiye
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Hanafy MS, Abdella Ahmed AK, Salem RG. Impact of using XP-endo finisher and nanobubble water during EDTA dentin conditioning on TGF-β1 release in regenerative endodontic procedures. BMC Oral Health 2024; 24:595. [PMID: 38778321 PMCID: PMC11112901 DOI: 10.1186/s12903-024-04355-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
INTRODUCTION Transforming Growth Factor-Beta 1 (TGF-β1) plays a crucial role in the success of Regenerative Endodontic Procedures (REPs) as they directly impact the proliferation and differentiation of stem cells. TGF-β1 is released by conditioning of the dentin matrix using 17% EDTA. EDTA was found to have deleterious effects on dentin especially in immature teeth with fragile dentin walls. Decreasing the irrigation time was reported to decrease these effects. Accordingly, enhancement and activation of the EDTA solution to maintain its efficiency in TGF-β1 release from dentin and thus compensating the reduction in irrigation time was employed. EDTA solution was enhanced by adding Nanobubble (NB) water which contains oxygen filled cavities less than 200 nm in diameter. Additionally, EDTA was activated with XP-endo Finisher rotary file. The aim of this study was to assess the impact of NB enhancement and/or XP-endo Finisher activation of the EDTA solution on the TGF-β1 release from dentin. METHODS Fifty standardized root segments with open apex were allocated to two main groups according to whether EDTA was enhanced with NB water or not, and within each group whether XP-endo Finisher activation was used or not in addition to a Negative Control group. The concentration of the released TGF-β1 in the root canal was measured using enzyme-linked immunosorbent assay (ELISA). The statistical analysis was done using the Shapiro- Wilk, Kolmogorov Smirnov, ANOVA and Post-hoc Tukey tests. RESULTS All groups released a considerable amount of TGF-β1 with the highest values in the EDTA/NB/XP group, followed by EDTA/NB, EDTA/DW/XP, EDTA/DW and Negative Control groups respectively. CONCLUSIONS The results of this study suggest that NBs can promote the success of REPs since it revealed a significant increase in the TGF-β1 release following its use in the enhancement of the EDTA solution. A comparable effect was obtained by XP-endo finisher activation of the EDTA solution. The combined use of NBs and XP-endo Finisher can be a promising addition in REPs. Accordingly, Enhancement and activation of the EDTA solution may compensate decreasing the EDTA irrigation time attempted to avoid the deleterious effect of EDTA on dentin.
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Affiliation(s)
- Mai Sayed Hanafy
- Endodontic Department, Faculty of Dentistry, Suez University, Suez, Egypt
| | | | - Rana Gehad Salem
- Pediatric Dentistry Department, Faculty of Oral and Dental Medicine, Badr University in Cairo, Cairo, Egypt.
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de Paula KDS, Dos Reis-Prado AH, de Jesus WP, Goto J, de Arantes LC, Verçosa M, Cintra LTA, Ervolino E, Szawka RE, Crovace MC, de Mesquita RA, Benetti F. Final irrigation with bioglass solution in regenerative endodontic procedure induces tissue formation inside the root canals, collagen maturation, proliferation cell and presence of osteocalcin. Int Endod J 2024; 57:586-600. [PMID: 38323923 DOI: 10.1111/iej.14033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 11/01/2023] [Accepted: 01/14/2024] [Indexed: 02/08/2024]
Abstract
AIM To evaluate the influence of an experimental solution of cobalt-doped F18 bioactive glass (F18Co) on tissue repair following regenerative endodontic procedure (REP) in rat molars. METHODOLOGY The F18Co solution was prepared at a ratio of 1:5 F18Co powder to distilled water. The right or left upper first molars of 12 Wistar rats were used, where the pulps were exposed, removed, and irrigated with 2.5% sodium hypochlorite (NaOCl), followed by 17% ethylenediaminetetraacetic acid (EDTA) (5 min each). Subsequently, the molars were divided into two groups (n = 6): REP-SS and REP-F18Co, where they received a final irrigation (5 min) with saline solution (SS) or F18Co solution, respectively. Then, intracanal bleeding was induced, and the tooth was sealed. Untreated molars were used as controls (n = 3). At 21 days, the rats were euthanized, and the specimens were processed for analysis of mineralized tissue and soft tissue formation inside the root canal using haematoxylin-eosin. The presence and maturation of collagen were evaluated by Masson's trichrome and picrosirius red staining. Immunolabelling analyses of proliferating cell nuclear antigen (PCNA) and osteocalcin (OCN) were performed. The data were submitted to the Mann-Whitney U-test (p < .05). RESULTS There was a similar formation of mineralized tissue in thickness and length in REP-SS and REP-F18Co groups (p > .05). Regarding the presence of newly formed soft tissue, most specimens of the REP-F18Co had tissue formation up to the cervical third of the canal, whilst the REP-SS specimens showed formation up to the middle third (p < .05), and there was higher maturation of collagen in REP-F18Co (p < .05). The number of PCNA-positive cells found in the apical third of the root canal was significantly higher in the F18Co group, as well as the OCN immunolabelling, which was severe in most specimens of REP-F18Co, and low in most specimens of REP-SS. CONCLUSION The final irrigation with F18Co bioactive glass solution in REP did not influence mineralized tissue formation but induced soft tissue formation inside the root canals, with higher collagen maturation, and an increase in PCNA-positive cells and OCN immunolabelling.
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Affiliation(s)
- Kiani Dos Santos de Paula
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
| | | | - Witalo Pereira de Jesus
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
| | - Juliana Goto
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araçatuba-SP, Brazil
| | - Lara Cancella de Arantes
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
| | - Marina Verçosa
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
| | | | - Edilson Ervolino
- Department of Basic Science, São Paulo State University (UNESP), School of Dentistry, Araçatuba-SP, Brazil
| | - Raphael Escorsim Szawka
- Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte-MG, Brazil
| | - Murilo Camuri Crovace
- Department of Materials Engineering, State University of São Carlos (UFSCar), Bioactive Materials Laboratory (LMBio), São Carlos-SP, Brazil
| | - Ricardo Alves de Mesquita
- Oral Pathology and Surgery, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
| | - Francine Benetti
- Department of Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte-MG, Brazil
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Cao Y, Yang M, Zhang R, Ning X, Zong M, Liu X, Li J, Jing X, Li B, Wu X. Carbon Dot-Based Photo-Cross-Linked Gelatin Methacryloyl Hydrogel Enables Dental Pulp Regeneration: A Preliminary Study. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38657655 DOI: 10.1021/acsami.4c03168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
An essential factor in tooth nutritional deficits and aberrant root growth is pulp necrosis. Removing inflammatory or necrotic pulp tissue and replacing it with an inert material are the most widely used therapeutic concepts of endodontic treatment. However, pulp loss can lead to discoloration, increased fracture risk, and the reinfection of the damaged tooth. It is now anticipated that the pulp-dentin complex will regenerate through a variety of application methods based on human dental pulp stem cells (hDPSC). In order to create a photo-cross-linked gelatinized methacrylate hydrogel, GelMA/EUO-CDs-E (ECE), that is biodegradable and injectable for application, we created a novel nanoassembly of ECE based on eucommia carbon dots (EUO-CDs) and epigallocatechin gallate (EGCG). We then loaded it onto gelatin methacryloyl (GelMA) hydrogel. We have evaluated the material and examined its in vivo and in vitro angiogenesis-promoting potential as well as its dentin differentiation-enabling characteristics. The outcomes of the experiment demonstrated that GelMA/ECE was favorable to cell proliferation and enhanced hDPSC's capacity for angiogenesis and dentin differentiation. The regeneration of vascular-rich pulp-like tissues was found to occur in vivo when hDPSC-containing GelMA/ECE was injected into cleaned human root segments (RS) for subcutaneous implantation in nude mice. This suggests that the injectable bioscaffold is appropriate for clinical use in pulp regenerative medicine.
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Affiliation(s)
- Yuxin Cao
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Mengqi Yang
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Ran Zhang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Xiao Ning
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Mingrui Zong
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Xiaoming Liu
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
| | - Jiadi Li
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Xuan Jing
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Bing Li
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Xiuping Wu
- School and Hospital of Stomatology, Shanxi Medical University, Taiyuan 030001, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
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Yu J, Li Y, Liu X, Huang H, Wang Y, Zhang Q, Li Q, Cao CY. EDTA-functionalized silica nanoparticles as a conditioning agent for dentin bonding using etch-and-rinse technique. J Dent 2023; 134:104528. [PMID: 37105434 DOI: 10.1016/j.jdent.2023.104528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 04/29/2023] Open
Abstract
OBJECTIVE This study investigated the possibility of using ethylenediaminetetraacetic acid functionalized silica nanoparticles (EDTA-SiO2) as a dentin-conditioning agent using etch-and-rinse technique to promote the durability of dentin bonding. METHODS The SiO2-EDTA were synthesized by N- [(3- trimethoxysilyl) propyl] ethylenediamine triacetic acid (EDTA-TMS) and SiO2 (50 nm), then characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The capacity of SiO2-EDTA to chelate calcium ions from dentin was examined by inductively coupled plasma-optic emission spectrometry (ICP-OES). The dentin surfaces conditioned with SiO2-EDTA were detected by field emission scanning electron microscopy (SEM), TEM and microhardness testing. For dentin bonding, dentin surfaces were adopted wet- or dry-bonding technique and bonded with adhesive (AdperTM Single Bond2) and applied composite resin (Filtek Z350) on them. The durability of dentin bonding was evaluated by mircotensile bond strength test, in-situ zymography and nanoleakage testing. RESULTS FTIR, TGA and XPS results showed that SiO2-EDTA contained N element and carboxyl groups. SEM, TEM and microhardness results indicated that SiO2-EDTA group created extrafibrillar demineralization and retained more intrafibrillar minerals within dentin surface. In the dentin bonding experiment, SiO2-EDTA group achieved acceptable bond strength, and reduced the activity of matrix metalloproteinase and nanoleakage along bonding interface. CONCLUSION It was possible to generate a feasible dentin conditioning agent (SiO2-EDTA), which could create dentin extrafibrillar demineralization and improve dentin bond durability. CLINICAL SIGNIFICANCE This study introduces a new dentin conditioning scheme based on SiO2-EDTA to create extrafibrillar demineralization for dentin bonding. This strategy has the potential to be used in clinic to promote the life of restoration bonding.
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Affiliation(s)
- Jianan Yu
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Yuexiang Li
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Xinyuan Liu
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Haowen Huang
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Yu Wang
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Qunlin Zhang
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China; School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
| | - Quanli Li
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Chris Ying Cao
- Stomatologic Hospital & College, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China.
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Bai Y, Cheng X, Liu X, Guo Q, Wang Z, Fu Y, He W, Yu Q. Transforming growth factor-β1 promotes early odontoblastic differentiation of dental pulp stem cells via activating AKT, Erk1/2 and p38 MAPK pathways. J Dent Sci 2023; 18:87-94. [PMID: 36643229 PMCID: PMC9831829 DOI: 10.1016/j.jds.2022.06.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 06/30/2022] [Indexed: 01/18/2023] Open
Abstract
Background/purpose TGF-β1 (Transforming growth factor-β1) plays an important role in the regeneration and repair of pulp-dentin complex. However, the biological function of TGF-β1 on odontoblastic differentiation remains unclear, mainly due to the processes of differentiation were controlled by complex signaling pathways. This study aimed to investigate the signaling pathways involved in regulating the early differentiation of dental pulp stem cells (DPSCs) by TGF-β1 and their functional role. Materials and methods DPSCs were treated with 1 ng/mL TGF-β1 and Western blotting was conducted to examine the activation of protein kinase B (AKT), small mothers against decapentaplegic 3 (Smad3), p38 mitogen-activated protein kinase (p38 MAPK), c-Jun N-terminal kinase (JNK) and extracellular signal-regulated kinase 1/2 (Erk1/2). DPSCs were exposed to mineralization medium contained TGF-β1 with/without the specific signaling pathway inhibitors, and early odontogenic differentiation was evaluated by assessing the expression of alkaline phosphatase (ALP), collagen type 1 alpha 1 (COL1A), dentin matrix protein 1 (DMP-1) and runt-related transcription factor 2 (Runx2). Results TGF-β1 stimulated AKT, Smad3, p38 MAPK, Erk1/2 and JNK phosphorylation in DPSCs within 120 min. TGF-β1 enhanced ALP activity and elevated levels of COL1A, DMP-1 and Runx2. LY294002, U0126 and SB203580 attenuated the effect of TGF-β1 on DPSCs, however, the SIS3 and SP600125 treated groups had no significant effect. Conclusion TGF-β1 promotes the early stage of odontoblastic differentiation in DPSCs by activating AKT, Erk1/2 and p38 MAPK signaling pathways, but not by Smad3 and JNK.
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Affiliation(s)
- Yu Bai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China
| | - Xiaogang Cheng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China
| | - Xin Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China
| | - Qian Guo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China
| | - Zhihua Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China
| | - Yi Fu
- Hospital of Stomatology, Zunyi Medical University, Zunyi, PR China
| | - Wenxi He
- Department of Stomatology, Air Force Medical Center, Air Force Medical University, Beijing, PR China,Corresponding author. Department of Stomatology, Air Force Medical Center, Air Force Medical University, 30 Fucheng Road, Beijing, 100142, PR China.
| | - Qing Yu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, Xi'an, PR China,Corresponding author. Department of Operative Dentistry and Endodontics, School of Stomatology, Air Force Medical University, 145 Changle Xi Road, Xi'an, 710032, PR China.
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Dos Reis-Prado AH, Oliveira SDC, Goto J, Silva GAB, Cintra LTA, de Mesquita RA, Szawka RE, Ribeiro-Sobrinho AP, Benetti F. Influence of ethylenediaminetetraacetic acid irrigation on the regenerative endodontic procedure in an immature rat molar model. Int Endod J 2023; 56:69-79. [PMID: 36229181 DOI: 10.1111/iej.13846] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/04/2022] [Accepted: 10/06/2022] [Indexed: 12/24/2022]
Abstract
AIM To analyse the influence of ethylenediaminetetraacetic acid (EDTA) on the repair process in immature rat molars after a regenerative endodontic procedure (REP). METHODOLOGY The lower first molars of 12 4-week-old Wistar rats underwent pulpectomy in the mesial root and were divided into the following groups: sodium hypochlorite (NaOCl; n = 6) - the mesial canals were irrigated with 2.5% NaOCl for 5 min, and NaOCl-EDTA (n = 6) - the canals were irrigated with 2.5% NaOCl, followed by 17% EDTA for 5 min each. After evoking bleeding using a size 10 K-file, the cavities were sealed. Three molars on the untreated side were randomly used as control (control-15 d; n = 3), and three molars from the other three rats untreated were used as immediate control (n = 3). After 15 days (NaOCl, NaOCl-EDTA and control-15 d groups) or immediately (control-immediate), the animals were euthanized, and the teeth were subjected to histologic evaluation of tissue regeneration and presence of collagen fibres. Mann-Whitney U-test was used (p < .05). RESULTS The experimental groups had newly formed cementum-like tissue and increased root length and thickness. Half of the specimens in NaOCl-EDTA group showed apical foramen closure, whilst the NaOCl group had partial apical closure. The experimental groups showed inflammatory infiltrate extending mainly to the medium third of the root canal. These parameters were similar between experimental groups (p > .05). Newly formed connective tissue in the pulp space was significantly higher in the NaOCl-EDTA group than in NaOCl group (p < .05). Regarding the collagen fibres, the NaOCl-EDTA group had more collagen fibres in the root tip, but there was no significant difference compared to NaOCl group, and both groups showed greater amount of immature fibres in this area; in the centre of the apical third of root canal, there was equivalence between mature and immature fibres from both groups (p > .05). CONCLUSIONS Ethylenediaminetetraacetic acid irrigation improved newly formed intracanal connective tissue after REP in immature molars of rats; however, EDTA did not influence cementum-like tissue formation, apical closure, inflammatory infiltrate and maturation of collagen fibres.
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Affiliation(s)
| | - Sabrina de Castro Oliveira
- Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Juliana Goto
- Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | | | | | - Ricardo Alves de Mesquita
- Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Raphael Escorsim Szawka
- Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | | | - Francine Benetti
- Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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The Effects of Transforming Growth Factor-β1 on the Differentiation of Cell Organoids Composed of Gingiva-Derived Stem Cells. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9818299. [PMID: 35872843 PMCID: PMC9303143 DOI: 10.1155/2022/9818299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/17/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022]
Abstract
This study was aimed at evaluating the effects of transforming growth factor-β on the differentiation and mRNA expression of organoids made out of human mesenchymal stem cells. Cell organoids composed of gingiva-derived stem cells were cultured in the presence of transforming growth factor-β1 at concentrations ranging from 0, 1, 10, to 20 ng/ml. Evaluations of the cell morphology of the organoids were performed on days 7, 9, 11, and 14. Quantitative cellular viability was completed on day 14. Alkaline phosphatase activity assays were performed to evaluate the differentiation of stem cells on day 14. Real-time polymerase chain reactions were used to determine the expression levels of TGF-β1, RUNX2, OCN, SOX9, and COL1A1 mRNA on day 14. The stem cells produced well-formed organoids on day 7, and the addition of transforming growth factor-β1 did not result in relevant changes in their shape. The organoids grew in size and became more intact with longer incubation times. On day 14, the diameters were 222.2 ± 9.6, 186.1 ± 4.8, 197.2 ± 9.6, and 211.1 ± 19.2 m for transforming growth factor-β1 at final concentrations of 0, 1, 10, and 20 ng/ml, respectively. Quantitative cell viability results from day 14 exhibited no significant difference between the groups (P > 0.05). There was significantly higher alkaline phosphatase activity with the addition of transforming growth factor-β1 with the highest value for the 1 ng/ml group (P < 0.05). Real-time polymerase chain reaction results demonstrated that the mRNA expression levels of RUNX2, OCN, and SOX were higher in 1 ng/ml but did not reach statistical significance. Treatment with 1 ng/ml of transforming growth factor-β1 significantly increased COL1A1 mRNA expression at day 14. The application of transforming growth factor-β1 increased differentiation, which was confirmed by alkaline phosphatase activity and mRNA expression while maintaining cell viability.
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Dos Reis-Prado AH, Abreu LG, Fagundes RR, Oliveira SC, Bottino MC, Ribeiro-Sobrinho AP, Benetti F. Influence of ethylenediaminetetraacetic acid on regenerative endodontics: a systematic review. Int Endod J 2022; 55:579-612. [PMID: 35305029 DOI: 10.1111/iej.13728] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND The effects of ethylenediaminetetraacetic acid (EDTA) on regenerative endodontic procedures (REPs) are controversial, because, despite releasing growth factors from dentine, some studies show negative effects on cell behaviour. OBJECTIVES To investigate the influence of the use of EDTA in REP on the growth factors' release, cell behaviour, and tissue regeneration. METHODS A systematic search was conducted (PubMed/Medline, Scopus, Cochrane Library, Web of Science, Embase, OpenGrey, and reference lists) up to February 2021. Only in vivo and in vitro studies evaluating the effects of EDTA on the biological factors of dentine, pulp/periapical tissues, and cell behaviour were eligible. Studies without a control group or available full text were excluded. The growth factors' release was the primary outcome. Risk of bias in the in vitro and in vivo studies was performed according to Joanna Briggs Institute's Checklist and SYRCLE's RoB tool, respectively. RESULTS Of the 1848 articles retrieved, 36 were selected. Among these, 32 were in vitro, three animal studies, and one with both models. The EDTA concentrations ranged from 3%-15%, at different times. Regarding growth factors' release (17 studies), 15 studies found significant transforming growth factor (TGF)-β release after dentine conditioning with EDTA, and most found no influence on vascular endothelial growth factor (VEGF) release. Regarding cell behaviour (26 studies), eight studies showed no influence of EDTA-treated dentine on cell viability; whereas, five, nine, and six studies showed higher cell migration, adhesion, and differentiation, respectively. No influence of EDTA conditioning was observed in animal studies. In vitro studies had a low risk of bias, whereas animal studies had high risk of bias. Meta-analysis was unfeasible. DISCUSSION This review found that EDTA increased TGF-β release and improved cell activity. However, well-designed histological analyses using immature teeth models are needed. CONCLUSIONS High quality in vitro evidence suggests that EDTA-treated dentine positively influences TGF-β release, cell migration, attachment, and differentiation; further research to evaluate its influence on tissue regeneration is necessary due to low methodological quality of the animal studies.
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Affiliation(s)
- A H Dos Reis-Prado
- Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - L G Abreu
- Child's and Adolescent's Oral Health, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - R R Fagundes
- Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - S C Oliveira
- Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - M C Bottino
- Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, 48109, USA
| | - A P Ribeiro-Sobrinho
- Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
| | - F Benetti
- Restorative Dentistry, Universidade Federal de Minas Gerais (UFMG), School of Dentistry, Belo Horizonte, MG, Brazil
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Yuan X, Yuan Z, Wang Y, Wan Z, Wang X, Yu S, Han J, Huang J, Xiong C, Ge L, Cai Q, Zhao Y. Vascularized pulp regeneration via injecting simvastatin functionalized GelMA cryogel microspheres loaded with stem cells from human exfoliated deciduous teeth. Mater Today Bio 2022; 13:100209. [PMID: 35198958 PMCID: PMC8841886 DOI: 10.1016/j.mtbio.2022.100209] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/20/2022] [Accepted: 01/27/2022] [Indexed: 12/20/2022] Open
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Effect of Different Root Canal Irrigant Solutions on the Release of Dentin-Growth Factors: A Systematic Review and Meta-Analysis. MATERIALS 2021; 14:ma14195829. [PMID: 34640224 PMCID: PMC8510123 DOI: 10.3390/ma14195829] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/22/2021] [Accepted: 09/29/2021] [Indexed: 01/07/2023]
Abstract
Irrigant solutions are used to promote dentin-growth factors (GF) release for regenerative endodontics. This review aimed to evaluate the reports comparing the release of GFs using different root canal irrigant solutions. Eligible studies compared the in vitro GF release in human teeth after the use of at least two distinct solutions. A search was conducted on Pubmed, Scopus, Web of Science, and Lilacs on 11 August 2021. Risk of bias was assessed using SciRAP. Study characteristics and quantitative data were extracted, and meta-analyses were performed for the mean difference (95% confidence interval) of the release of transforming growth factors Beta 1 (TGF-β1) by EDTA compared to other irrigants. Of sixteen eligible studies, eight were included in quantitative analysis. ELISA assays showed higher TGF-β1 release from 10% EDTA compared to 10% citric acid (p < 0.00001). Immunogold assays showed higher levels of TGF-β1 for 17% EDTA (p < 0.00001) compared to 10% citric acid. GRADE identified a low to very low certainty of evidence. These results point to an increased release of TGF-β1 in dentin treated with EDTA. The high heterogeneity and very low certainty of the evidence demand further studies before EDTA indication as a better irrigant for regenerative endodontics. Registration: CRD42020160871 (PROSPERO).
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12
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Ferrari AR, Cortrezzi S, Borges E, Braga D, Souza MDCBD, Antunes RDA. Evaluation of the Effects of Platelet-Rich Plasma on Follicular and Endometrial Growth: A Literature Review. JBRA Assist Reprod 2021; 25:601-607. [PMID: 34415119 PMCID: PMC8489815 DOI: 10.5935/1518-0557.20210036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Platelet-rich plasma (PRP) has been used in several areas of medicine due to its ability to promote tissue regeneration by growth factors and cytokines. This review addresses the use of PRP to rejuvenate ovarian follicles and increase the thickness of the endometrium to receive an embryo. PRP is obtained from the patient's own blood (autologous blood) - a fact that determines a lower chance of rejection reactions. Alpha granules of platelets provide and release supra physiological amounts of growth factors and cytokines, which provide a regenerative stimulus in tissues with low healing potential. In the ovary, PRP and its growth factors stimulate vascularization and recruitment of available primordial follicles that could no longer be otherwise stimulated. The rejuvenation of the ovary by PRP infusion aims to obtain new oocytes in ovaries with low numbers of follicles or low follicular reserve markers. In the preparation of the endometrium, PRP is used for its several growth factors that allow tissue proliferation and endometrial thickening, especially in cases of endometria that are difficult to prepare or that fail to reach an adequate minimum thickness (>7mm). To date, there are few studies of greater expression in the literature that support the use of PRP with the two purposes described above. Thus, although promising, the technique must still be validated by larger clinical trials.
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Affiliation(s)
| | - Sylvia Cortrezzi
- Fertility - Centro de Fertilização Assistida, São Paulo, SP, Brazil
| | - Edson Borges
- Fertility - Centro de Fertilização Assistida, São Paulo, SP, Brazil
| | - Daniela Braga
- Fertility - Centro de Fertilização Assistida, São Paulo, SP, Brazil
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Srisuwan T, Wattanapakkavong K. Direct effect of transforming growth factor-beta 1 (TGF-β1) on human apical papilla cell proliferation and mineralisation. AUST ENDOD J 2021; 48:322-330. [PMID: 34596309 DOI: 10.1111/aej.12572] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/27/2021] [Accepted: 09/19/2021] [Indexed: 01/30/2023]
Abstract
Firstly, this study investigated the direct effect of Transforming Growth Factor-beta 1 at 10, 5, 2.5 and 1.25 ng mL-1 on human apical papilla cell proliferation and mineralisation. Cell proliferation was examined at 0, 2, 4, 6, 24, 48, 72, 96 and 120 h using Alamar BlueTM assay. Cell mineralisation was examined at day 21 with a quantitative Alizarin Red S staining. Secondly, the study aimed to estimate the amount of Transforming Growth Factor-beta 1 (TGF-β1) released from the dentin after root canal irrigation. The solution collected from a root canal after rinsing with various protocols (normal saline solution, ethylenediaminetetraacetic acid or chlorhexidine) was analysed with an enzyme-linked immunosorbent assay. Data were statistically analysed using a one-way analysis of variance. The results, from the first part, revealed cell proliferation reduction in all experimental groups presented with TGF-β1. The higher concentration generated more deteriorating effects. Cell mineralisation was highest in a group with TGF-β1 at 1.25 ng mL-1 (P < 0.05). For the growth factor released from dentin, the highest amount was detected only when ethylenediaminetetraacetic acid was associated with the irrigation (P < 0.05). In summary, the direct effects of TGF-β1 on cell proliferation and differentiation were diverse, depending on concentration. The release of TGF-β1 from root dentin can be achieved after rinsing with ethylenediaminetetraacetic acid.
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Affiliation(s)
- Tanida Srisuwan
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
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14
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Virdee SS, Bashir N, Camilleri J, Cooper PR, Tomson P. Exploiting dentine matrix proteins in cell-free approaches for periradicular tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:707-732. [PMID: 34309453 PMCID: PMC9419954 DOI: 10.1089/ten.teb.2021.0074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The recent discovery of mesenchymal stem cells within periapical lesions (PL-MSC) has presented novel opportunities for managing periradicular diseases in adult teeth by way of enhancing tissue regeneration. This discovery coincides with the current paradigm shift toward biologically driven treatment strategies in endodontics, which have typically been reserved for non-vital immature permanent teeth. One such approach that shows promise is utilizing local endogenous non-collagenous dentine extracellular matrix components (dECM) to recruit and upregulate the intrinsic regenerative capacity of PL-MSCs in situ. At picogram levels, these morphogens have demonstrated tremendous ability to enhance the cellular activities in in vitro and in vivo animal studies that would otherwise be necessary for periradicular regeneration. Briefly, these include proliferation, viability, migration, differentiation, and mineralization. Therefore, topical application of dECMs during ortho- or retrograde root canal treatment could potentially enhance and sustain the regenerative mechanisms within diseased periapical tissues that are responsible for attaining favorable clinical and radiographic outcomes. This would provide many advantages when compared with conventional antimicrobial-only therapies for apical periodontitis (AP), which do not directly stimulate healing and have had stagnant success rates over the past five decades despite significant advances in operative techniques. The aim of this narrative review was to present the novel concept of exploiting endogenous dECMs as clinical tools for treating AP in mature permanent teeth. A large scope of literature was summarized to discuss the issues associated with conventional treatment modalities; current knowledge surrounding PL-MSCs; composition of the dECM; inductive potentials of dECM morphogens in other odontogenic stem cell niches; how treatment protocols can be adapted to take advantage of dECMs and PL-MSCs; and finally, the challenges currently impeding successful clinical translation alongside directions for future research.
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Affiliation(s)
- Satnam Singh Virdee
- University of Birmingham, 1724, School of Dentistry, Birmingham, West Midlands, United Kingdom of Great Britain and Northern Ireland;
| | - Nasir Bashir
- University of Birmingham, 1724, School of Dentistry, Birmingham Dental Hospital and School of Dentistry, 5 Mill Pool Way, Edgbaston, Birmingham, United Kingdom of Great Britain and Northern Ireland, B5 7SA;
| | - Josette Camilleri
- University of Birmingham, 1724, School of Dentistry, Birmingham, West Midlands, United Kingdom of Great Britain and Northern Ireland;
| | - Paul R Cooper
- University of Otago, 2495, Faculty of Dentistry, Dunedin, New Zealand;
| | - Phillip Tomson
- University of Birmingham College of Medical and Dental Sciences, 150183, School of Dentistry, Institute of Clinical Sciences, 5 Mill Pool Way, Edgbaston, Birmingham, Birmingham, Birmingham, United Kingdom of Great Britain and Northern Ireland, B5 7EG.,University of Birmingham;
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Grawish ME, Saeed MA, Sultan N, Scheven BA. Therapeutic applications of dental pulp stem cells in regenerating dental, periodontal and oral-related structures. World J Meta-Anal 2021; 9:176-192. [DOI: 10.13105/wjma.v9.i2.176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/13/2021] [Accepted: 04/23/2021] [Indexed: 02/06/2023] Open
Abstract
Dental pulp stem cells (DPSCs) have emerged as a promising tool with great potential for use in tissue regeneration and engineering. Some of the main advantages of these cells are their multifaceted differentiation capacity, along with their high proliferation rate, a relative simplicity of extraction and culture that enables obtaining patient-specific cell lines for their use in autologous cell therapy. PubMed, Scopus and Google Scholar databases were searched for relevant articles related to the use of DPSCs in regeneration of dentin-pulp complex (DPC), periodontal tissues, salivary gland and craniomaxillofacial bone defects. Few studies were found regarding the use of DPSCs for regeneration of DPC. Scaffold-based combined with DPSCs isolated from healthy pulps was the strategy used for DPC regeneration. Studies involved subcutaneous implantation of scaffolds loaded with DPSCs pretreated with odontogenic media, or performed on human tooth root model as a root slice. Most of the studies were related to periodontal tissue regeneration which mainly utilized DPSCs/secretome. For periodontal tissues, DPSCs or their secretome were isolated from healthy or inflamed pulps and they were used either for preclinical or clinical studies. Regarding salivary gland regeneration, the submandibular gland was the only model used for the preclinical studies and DPSCs or their secretome were isolated only from healthy pulps and they were used in preclinical studies. Likewise, DPSCs have been studied for craniomaxillofacial bone defects in the form of mandibular, calvarial and craniofacial bone defects where DPSCs were isolated only from healthy pulps for preclinical and clinical studies. From the previous results, we can conclude that DPSCs is promising candidate for dental and oral tissue regeneration.
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Affiliation(s)
- Mohammed E Grawish
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura 35516, Egypt
- Department of Oral Biology, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Mansoura 11152, Egypt
| | - Mahmoud A Saeed
- Department of Oral Biology, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Mansoura 11152, Egypt
| | - Nessma Sultan
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura 35516, Egypt
| | - Ben A Scheven
- School of Dentistry, Oral Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B5 7EG, United Kingdom
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17
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Grawish ME, Saeed MA, Sultan N, Scheven BA. Therapeutic applications of dental pulp stem cells in regenerating dental, periodontal and oral-related structures. World J Meta-Anal 2021; 9:175-191. [DOI: 10.13105/wjma.v9.i2.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Khan JA, Hasan A, Dossa S, Ali B. Effect of Natural and Artificial Dentin Conditioners on the Release of Vascular Endothelial Growth Factor. J Endod 2021; 47:800-805. [PMID: 33581196 DOI: 10.1016/j.joen.2021.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/15/2020] [Accepted: 02/04/2021] [Indexed: 12/21/2022]
Abstract
INTRODUCTION The purpose of this study was to observe the release of vascular endothelial growth factor (VEGF) after conditioning with etidronic acid (also known as 1-hydroxyethylidene-1 and 1-bisphosphonate [HEDP]) and phytic acid (inositol hexakisphosphate [IP6]) in comparison with EDTA on human dentin disks and cylinders. METHODS Human dentin disks were disinfected and prepared by the standardized method. Seventeen percent EDTA, 9% HEDP, 1% IP6, and distilled water (5 minutes) were used to immerse dentin disks. The dentin cylinders were prepared by following disinfection and the standardized preparation method to achieve a truncated cone-shaped canal with a 1-mm open apex. The dentin cylinder samples were irrigated with sodium hypochlorite (5 mL/5 minutes) and then rinsed with 17% EDTA, 9% HEDP, 1% IP6 and distilled water (5 mL/5 min). Enzyme-linked immunosorbent essay was performed to measure VEGF release. One-way analysis of variance was used to compare the mean release of VEGF between study groups and controls at a significance level of .05. A post hoc Tukey test was used for multiple comparisons between study groups. RESULTS Among conditioners, HEDP released more VEGF from both disks and cylinders. In cylinders, VEGF release by HEDP was significantly greater than the other conditioners, whereas in disks the release of VEGF was similar with all conditioners. CONCLUSIONS The release of VEGF by 9% HEDP and 1% IP6 was comparable with 17% EDTA from dentin disks; however, HEDP demonstrated more release from dentin cylinders than EDTA and IP6.
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Affiliation(s)
- Javeria Ali Khan
- Department of Operative Dentistry, Dow Dental College, Dow University of Health Sciences, Karachi, Sindh, Pakistan
| | - Arshad Hasan
- Department of Operative Dentistry, Dow Dental College, Dow University of Health Sciences, Karachi, Sindh, Pakistan.
| | - Sumaiya Dossa
- Department of Operative Dentistry, Dow Dental College, Advanced Research Laboratory, Laboratory Animal Sciences, Dow University of Health Sciences, Karachi, Sindh, Pakistan
| | - Batool Ali
- Department of Orthodontics, Dow Dental College, Dow University of Health Sciences, Karachi, Sindh, Pakistan
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Retana-Lobo C, Guerreiro-Tanomaru JM, Tanomaru-Filho M, Mendes de Souza BD, Reyes-Carmona J. Sodium Hypochlorite and Chlorhexidine Downregulate MMP Expression on Radicular Dentin. Med Princ Pract 2021; 30:470-476. [PMID: 34153965 PMCID: PMC8562034 DOI: 10.1159/000517887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 06/15/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Matrix metalloproteinases (MMPs) are present in radicular dentin and can convert structural matrix proteins into signaling molecules; thus, these enzymes play an essential role in dentin biomineralization and tissue regeneration therapies. Their expression on radicular dentin may be affected by the irrigation solutions used during root canal treatments. This study aimed to evaluate the effects of the most common irrigants on radicular dentin MMP expression. MATERIALS AND METHODS The experimental solutions were distilled water (control), 5% sodium hypochlorite (NaOCl), 18% ethylenediaminetetraacetic acid (EDTA), and 2% chlorhexidine (CHX). Samples were prepared from extracted human teeth. For zymography analysis, root sections were powderized, and dentin proteins were extracted to observe gelatinolytic activity. Root dentin slices were treated with the experimental solutions for immunohistochemical analysis using anti-MMP-2 and anti-MMP-9 antibodies. ANOVA and the Tukey test were performed. RESULTS Zymograms revealed the presence of MMP-2, MMP-8, and MMP-20 in the control group and the EDTA-treated group. Immunohistochemistry confirmed the presence of MMP-2 and MMP-9 mainly associated with the dentinal tubule lumens and occasionally with intertubular dentin. NaOCl- and CHX-treated groups showed lower expression of MMPs than the control group. Immuno-staining for both proteinases in the EDTA-treated group showed higher expression compared to the other experimental groups. CONCLUSION Our results showed that most common irrigants affect MMP expression on radicular dentin. Treatment with NaOCl and chlorhexidine resulted in lower expression of MMPs, while EDTA increased their expression in root canal dentin.
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Affiliation(s)
| | | | - Mario Tanomaru-Filho
- Department of Restorative Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | | | - Jessie Reyes-Carmona
- Department of Endodontics, University of Costa Rica, San Jose, Costa Rica
- *Jessie Reyes-Carmona,
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Ferreira LN, Puppin-Rontani RM, Pascon FM. Effect of Intracanal Medicaments and Irrigants on the Release of Transforming Growth Factor Beta 1 and Vascular Endothelial Growth Factor from Cervical Root Dentin. J Endod 2020; 46:1616-1622. [PMID: 32795548 DOI: 10.1016/j.joen.2020.07.034] [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: 04/27/2020] [Revised: 07/13/2020] [Accepted: 07/24/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION This study aimed to evaluate (1) the effect of irrigating solutions and intracanal medicaments on the release of transforming growth factor beta 1 (TGF-β1) and vascular endothelial growth factor (VEGF) from cervical root dentin and (2) the effect of associating triple antibiotic paste (TAP) and calcium hydroxide paste (CH) with 2% chlorhexidine (CHX) on TGF-β1 release. METHODS First, 119 specimens from roots (cervical thirds) were obtained and were distributed into 5 groups: 2% CHX, 2.5% sodium hypochlorite, TAP, CH, and 10% EDTA by each growth factor (TGF-β1 [n = 8] and VEGF [n = 8]). Then, specimens were distributed as follows (n = 13): TAP + 2% CHX, CH + 2% CHX, and 10% EDTA and treated with irrigating solutions and intracanal medicaments. After the treatments, the specimens were immersed in 10% EDTA (20 minutes), and the solution was analyzed using the enzyme-linked immunosorbent assay. The data were submitted to normality, homogeneity of variance, and Mann-Whitney tests (P < .05). RESULTS Significant differences were found between the irrigating solutions (P < .05) and intracanal medicaments for TGF-β1 (P < .05). No VEGF release was detected for any group. Our results showed no significant differences among the TAP + 2% CHX and EDTA groups for TGF-β1 but a significant difference between CH + 2% CHX and the other groups (P < .05). CONCLUSIONS The use of 2% CHX as the irrigating solution, CH as the intracanal medicament, and 10% EDTA as the final irrigation provides higher TGF-β1 release from the cervical root dentin, whereas VEGF was not detected. Moreover, TAP and 2% CHX with 10% EDTA as the final irrigation resulted in greater TGF-β1 release from cervical root dentin than CH + 2% CHX.
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Affiliation(s)
- Lívia Nazareth Ferreira
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, Faculdade de Odontologia de Piracicaba, University of Campinas, Piracicaba, Brazil
| | - Regina Maria Puppin-Rontani
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, Faculdade de Odontologia de Piracicaba, University of Campinas, Piracicaba, Brazil
| | - Fernanda Miori Pascon
- Department of Health Sciences and Pediatric Dentistry, Piracicaba Dental School, Faculdade de Odontologia de Piracicaba, University of Campinas, Piracicaba, Brazil.
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Kucukkaya Eren S, Bahador Zırh E, Zeybek ND, Askerbeyli Örs S, Aksel H, Parashos P. Effect of benzalkonium chloride addition to EDTA on attachment and proliferation of dental pulp stem cells on dentin and on transforming growth factor-β1 release. Odontology 2020; 109:313-320. [PMID: 32770280 DOI: 10.1007/s10266-020-00545-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/29/2020] [Indexed: 12/15/2022]
Abstract
To investigate the effect of benzalkonium chloride (BAC) addition to ethylenediaminetetraacetic acid (EDTA) on transforming growth factor-β1 (TGF-β1) release, as well as attachment and proliferation of dental pulp stem cells (DPSCs) on dentin. A total of standard 268 human dentin disks were prepared and immersed in 1.5% sodium hypochlorite (NaOCl) for 5 min. The disks were rinsed with distilled water and randomly divided into seven groups. In control group, the disks received no further treatment. The remaining disks were immersed in following solutions: 17% EDTA or 17% EDTA + 0.008% BAC for 1, 5 or 10 min and rinsed with distilled water. DPSCs were seeded in part of the disks since the TGF-β1 release assay was performed with disks with and without cells. The attachment and proliferation of DPSCs on dentin disks were analyzed using lactate dehydrogenase activity and WST-1 assays, respectively. The cell morphology was observed by scanning electron microscopy. The release of TGF-β1 was quantified using ELISA. Data were analyzed using three- and two-way analysis of variance with Bonferroni corrections. Both EDTA solutions increased the attachment and proliferation of DPSCs (p < .05) while there was no significant difference between them (p > .05). The exposure time of both EDTA solutions had no influence on cell attachment, proliferation and TGF-β1 release (p > .05). There was no significant difference in TGF-β1 release between the control and experimental groups (p > .05). The amount of released TGF-β1 from dentin disks was similar whether or not they were seeded with cells (p > .05). Dentin treatment with either of the EDTA solutions had no effect on the amount of TGF-β1 release while both EDTA solutions improved cell attachment and proliferation on dentin surface regardless of exposure time.
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Affiliation(s)
- Selen Kucukkaya Eren
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, 06100, Ankara, Turkey.
| | - Elham Bahador Zırh
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Naciye Dilara Zeybek
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Sevinc Askerbeyli Örs
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, 06100, Ankara, Turkey
| | - Hacer Aksel
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, 06100, Ankara, Turkey.,Department of Periodontics and Endodontics, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA
| | - Peter Parashos
- Melbourne Dental School, University of Melbourne, Melbourne, VIC, Australia
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Removal of Composite Restoration from the Root Surface in the Cervical Region Using Er: YAG Laser and Drill-In Vitro Study. MATERIALS 2020; 13:ma13133027. [PMID: 32645864 PMCID: PMC7372447 DOI: 10.3390/ma13133027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/24/2020] [Accepted: 07/03/2020] [Indexed: 12/13/2022]
Abstract
Background: Recently, the defects of the tooth surface in the cervical region are often restored using composite filling materials. It should meet the needs of the patients regarding esthetics and material stability. The aim of the study was to analyze the tooth root surface at the cervical region after the removal of the composite filling material by means of the Erbium-doped Yttrium Aluminium Garnet (Er: YAG) laser or drill using the scanning electron microscopy (SEM) and fluorescence microscopy. Materials and Methods: For the purposes of this study, 14 premolar teeth (n = 14) were removed due to orthodontic reasons. The rectangular shape cavities with 3 mm in width and 1.5 mm in height were prepared with a 0.8 mm bur on high-speed contra-angle in the tooth surface just below cemento-enamel junction (CEJ) and filled with the composite material. The composite material was removed with the Er: YAG laser at a power of 3.4 W, energy 170 mJ, frequency 20 Hz, pulse duration 300 μs, tip diameter 0.8 mm, air/fluid cooling 3 mL/s, and time of irradiation: 6 sec, at a distance from teeth of 2 mm (G1 group, n = 7) or a high-speed contra-angle bur (G2 group, n = 7). After the removal of composite material, the surfaces of teeth were examined using the scanning electron microscopy (SEM) and fluorescence microscopy. Results: The Er: YAG irradiation allowed to remove completely the composite material from the tooth cavity. The study confirmed, that the ends of collagen fibers were only partially denatured after the Er: YAG laser application. Conclusion: It has been proved that using the Er: YAG laser is an effective and safe method of composite removal for the dentin surface.
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Liu Y, Qiu Y, Ni S, Zhang X, Sun H, Song W, Li X. Mussel-Inspired Biocoating for Improving the Adhesion of Dental Pulp Stem Cells in Dental Pulp Regeneration. Macromol Rapid Commun 2020; 41:e2000102. [PMID: 32483838 DOI: 10.1002/marc.202000102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 05/03/2020] [Indexed: 12/21/2022]
Abstract
Dental pulp engineering possesses a promising perspective to replacing lost pulp in the root canal and restoring its functions. Stable adhesion of dental pulp stem cells (DPSCs) on the root canal dentin wall is a key element required for reconstruction of a functional odontoblast layer in dental pulp regeneration. To address this challenge, dopamine-modified hyaluronic acid (DA-HA) is coated on dentin to obtain a stable adhesion of DPSCs. The dopamine segment provides adhesion ability to the coating, and the hyaluronic acid increases the biocompatibility. The results show that DPSCs can adhere on the DA-HA coated dentin slice better than those without coating. Simultaneously, DPSCs proliferation can be further promoted on the prepared coating. Therefore, the DA-HA coating may provide a possible way to immobilize odontoblast cell onto dentin surface for pulp regeneration.
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Affiliation(s)
- Yanan Liu
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130023, P. R. China.,Department of Endodontics, School of Stomatology, Jilin University, Changchun, 130021, P. R. China.,Department of Pathology, School of Stomatology, Jilin University, Changchun, 130021, P. R. China.,ENT Department, Baoding No. 1 Central Hospital, Baoding, 071000, P. R. China
| | - Ying Qiu
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Shilei Ni
- Department of Pathology, School of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Xuewei Zhang
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130023, P. R. China
| | - Hongchen Sun
- Department of Pathology, School of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Wenlong Song
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130023, P. R. China
| | - Xiangwei Li
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, 130021, P. R. China
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Bracks IV, Espaladori MC, Barros P, de Brito LCN, Vieira LQ, Ribeiro Sobrinho AP. Effect of ethylenediaminetetraacetic acid irrigation on immune-inflammatory response in teeth submitted to regenerative endodontic therapy. Int Endod J 2019; 52:1457-1465. [PMID: 31046128 DOI: 10.1111/iej.13136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 04/29/2019] [Indexed: 12/28/2022]
Abstract
AIM To analyse longitudinally the immune-inflammatory response in teeth of mice that underwent a regenerative protocol with or without the use of ethylenediaminetetraacetic acid (EDTA) to irrigate the root canal system. METHODOLOGY First maxillary molars of mice were devitalized using size 10 and 15 files. Teeth were divided into the following groups: Empty - the canals were left empty; Blood Clot (BC) - the canals were filled with a blood clot; and EDTA + Blood - the canals were irrigated with 0.06 mL of 17% EDTA for 1 min and filled with a blood clot. Access cavities were restored with Coltosol® . Animals were sacrificed at 7, 14 or 21 days after the operative procedures, and teeth were collected. RNA was extracted, mRNA expression of the cytokines IGF, NGF, IL-1α, IL-10, TGF and VEGF was assessed using real-time PCR, and the anova Kruskal-Wallis test was used. RESULTS IL-1 mRNA expression was significantly higher in the EDTA + BC group than in the Empty and BC groups at the 7th and 14th days of evaluation (P < 0.05). IL-10 mRNA expression was similar across the three groups at all time periods. TGF-β mRNA expression in the EDTA + BC group was significantly higher on the 7th and 21st days than on the 14th (P < 0.05); at day 21, TGF-β mRNA expression was similar between the BC and EDTA + BC groups but significantly higher than in the Empty group (P < 0.05). IGF mRNA expression was significantly higher in the EDTA + BC group than in the other groups at all time periods. VEGF mRNA expression remained unchanged throughout the experimental period in all groups (P > 0.05). NGF mRNA expression was similar amongst all groups at the 7th and 21st days (P > 0.05). At the 14th day, however, there was a significant increase in NGF mRNA expression in the EDTA + Blood group (P < 0.05) when compared with the expression in the other groups. CONCLUSION EDTA promoted increased expression of factors that have the potential to improve the outcome of regenerative endodontic treatment.
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Affiliation(s)
- I V Bracks
- Department of Operative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M C Espaladori
- Department of Operative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - P Barros
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - L C N de Brito
- Department of Endodontics, School of Dentistry, Itaúna University, Itaúna, MG, Brazil
| | - L Q Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - A P Ribeiro Sobrinho
- Department of Operative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Pelissari C, Paris AFC, Mantesso A, Trierveiler M. Apical Papilla Cells Are Capable of Forming a Pulplike Tissue with Odontoblastlike Cells without the Use of Exogenous Growth Factors. J Endod 2019; 44:1671-1676. [PMID: 30409448 DOI: 10.1016/j.joen.2018.08.005] [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: 05/10/2018] [Revised: 08/04/2018] [Accepted: 08/12/2018] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Dental pulp is a complex tissue with highly differentiated cells, which makes its reconstruction a challenging task. The apical papilla is an undifferentiated tissue considered as the remnant of the dental papilla that forms the dentin-pulp complex. Aiming to analyze morphologic features of the tissue formed in an in vivo pulp model, we used human apical papilla as a cell source without the use of exogenous growth factors. METHODS A construct was built using newborn mice molar crowns treated with TrypLE (Fisher Scientific, Loughborough, UK) and EDTA. The crowns were filled with PuraMatrix (Corning Inc, Corning, NY) and a pool population of human apical papilla cells. As a control, we used crowns filled only with PuraMatrix and empty crowns. The constructs were transplanted under severe combined immunodeficient mice kidney capsules. Immunohistochemistry for lamin A, dentin sialophosphoprotein, and dentin matrix protein 1 was performed. RESULTS Morphologic analysis of all transplanted crowns showed the formation of a loose connective tissue of variable cellularity with the presence of well-formed functional vessels. In the study group, lamin A-positive cells represented the majority of cells within the pulp chamber and a few cells in the vessel lining. We also found positivity for dentin sialophosphoprotein and dentin matrix protein 1, an indicator of odontoblast differentiation. CONCLUSIONS In our study model, human transplanted apical papilla cells mixed with the host cells and formed a vascularized viable tissue, and these cells were able to differentiate into odontoblastlike cells without the use of exogenous growth factors.
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Affiliation(s)
- Cibele Pelissari
- Laboratory of Stem Cell Biology in Dentistry-LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Adriana F C Paris
- Laboratory of Stem Cell Biology in Dentistry-LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Andrea Mantesso
- Laboratory of Stem Cell Biology in Dentistry-LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Marília Trierveiler
- Laboratory of Stem Cell Biology in Dentistry-LABITRON, Oral and Maxillofacial Pathology Department, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil.
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Deniz Sungur D, Aksel H, Ozturk S, Yılmaz Z, Ulubayram K. Effect of dentine conditioning with phytic acid or etidronic acid on growth factor release, dental pulp stem cell migration and viability. Int Endod J 2019; 52:838-846. [DOI: 10.1111/iej.13066] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 12/12/2018] [Indexed: 11/28/2022]
Affiliation(s)
- D. Deniz Sungur
- Department of Endodontics Hacettepe University Faculty of Dentistry Ankara Turkey
| | - H. Aksel
- Department of Endodontics Hacettepe University Faculty of Dentistry Ankara Turkey
- Department of Periodontics and Endodontics School of Dental Medicine University at Buffalo Buffalo NY USA
| | - S. Ozturk
- Bioengineering Department Gebze Technical University KocaeliTurkey
- Bioengineering Division Institute for Graduate Studies in Science and Engineering Hacettepe University AnkaraTurkey
| | - Z. Yılmaz
- Department of Endodontics Hacettepe University Faculty of Dentistry Ankara Turkey
| | - K. Ulubayram
- Bioengineering Division Institute for Graduate Studies in Science and Engineering Hacettepe University AnkaraTurkey
- Department of Basic Pharmaceutical Sciences Faculty of Pharmacy Hacettepe University Ankara Turkey
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Biomimetic Conditioning of Human Dentin Using Citric Acid. J Endod 2019; 45:45-50. [DOI: 10.1016/j.joen.2018.09.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 09/20/2018] [Accepted: 09/23/2018] [Indexed: 12/27/2022]
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Chae Y, Yang M, Kim J. Release of TGF-β1 into root canals with various final irrigants in regenerative endodontics: an in vitro
analysis. Int Endod J 2018; 51:1389-1397. [DOI: 10.1111/iej.12951] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 05/12/2018] [Indexed: 10/16/2022]
Affiliation(s)
- Y. Chae
- Private Practice; Baltimore MD USA
| | - M. Yang
- Regenerative Health Research Laboratory; Philadelphia PA USA
- Department of Endodontology; Maurice H. Kornberg School of Dentistry; Temple University; Philadelphia PA USA
| | - J. Kim
- Department of Endodontology; Maurice H. Kornberg School of Dentistry; Temple University; Philadelphia PA USA
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