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Single Cone Obturation versus Cold Lateral Compaction Techniques with Bioceramic and Resin Sealers: Quality of Obturation and Push-Out Bond Strength. Int J Dent 2023; 2023:3427151. [PMID: 36704662 PMCID: PMC9873427 DOI: 10.1155/2023/3427151] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 12/26/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Objectives This study compared the obturation quality and push-out bond strength of single cone obturation (SCO) and cold lateral compaction (CLC) with AH-Plus and Sure Seal Root (SSR). Materials and Methods This in vitro experimental study was conducted on 88 single-rootedsingle-canal teeth with straight roots that were randomly divided into four groups (n = 22). All teeth were decoronated and underwent cleaning and shaping. Obturation was performed with AH-Plus and SCO technique in group 1 (SAH), AH-Plus and CLC technique in group 2 (LAH), SSR and SCO technique in group 3 (SS), and SSR and CLC technique in group 4 (LS). The roots were then sectioned into 3-mm thick slices and underwent digital photography at x25 magnification to assess the quality of obturation in the coronal, middle, and apical thirds by Image J software. The PBS was measured by a universal testing machine. The mode of failure was also determined under a stereomicroscope. Results The PBS was significantly higher in the LSS group than LAH and SAH groups, and also in the SSS group than the SAH group in all sections. The PBS in the LSS group was significantly higher than SSS in the coronal and middle thirds. Voids were significantly lower in LAH than in the SAH group in all sections. In LSS, voids in the coronal third were significantly lower than in LAH. In the middle third, voids in SSS were significantly lower than in SAH. The groups had no significant difference in the mode of failure (P > 0.05). The mean percentage of gutta-percha in the use of AH-Plus sealer was significantly higher than SSR (P < 0.05). The mean percentage of gutta-percha in the coronal third was lower than that in the middle and apical thirds (P < 0.05). Conclusion SSR showed higher PBS and less voids than AH-Plus. High PBS of the CLC/SSR group showed that CLC should still be preferred to SCO, and in the case of using SCO, SSR should be preferred to AH-Plus.
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Kim M, Hayashi M, Yu B, Lee TK, Kim RH, Jo DW. Effects of Fucoidan Powder Combined with Mineral Trioxide Aggregate as a Direct Pulp-Capping Material. Polymers (Basel) 2022; 14:polym14122315. [PMID: 35745892 PMCID: PMC9228542 DOI: 10.3390/polym14122315] [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: 05/14/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022] Open
Abstract
The development of direct pulp-capping materials with favorable biological and structural properties is an important goal in restorative dentistry. Fucoidan is a sulfated, fucose-containing polysaccharide obtained from brown seaweed, with a wide range of applications; however, its use as a direct pulp-capping material has not been examined. This study aimed to evaluate the mechanical, physical, and biological effects of fucoidan combined with conventional mineral trioxide aggregate (MTA) for direct pulp capping. The capping materials were created using Portland cement (80 wt%) and zirconium oxide (20 wt%) as base components, compared with base components plus 5 wt% fucoidan (PZF5) and base components plus 10 wt% fucoidan (PZF10). The initial and final setting time, compressive strength, chemical components, cell viability, adhesion, migration, osteogenesis, and gene expression were analyzed. Fucoidan significantly reduced the initial and final setting time, regardless of quantity. However, the compressive strength was lower for PZF5. Sulfur levels increased with fucoidan. The biological activity improved, especially in the PZF5 group. Cell migration, Alizarin Red S staining, and alkaline phosphatase activity were upregulated in the PZF5 group. Fucoidan is a useful regenerative additive for conventional pulp-capping materials because it reduces the setting time and improves cell migration and osteogenic ability.
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Affiliation(s)
- Mijoo Kim
- UCLA School of Dentistry Restorative Materials and Applied Dental Research Laboratory, Los Angeles, CA 90095, USA; (M.K.); (M.H.); (B.Y.); (T.K.L.); (R.H.K.)
- Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Marc Hayashi
- UCLA School of Dentistry Restorative Materials and Applied Dental Research Laboratory, Los Angeles, CA 90095, USA; (M.K.); (M.H.); (B.Y.); (T.K.L.); (R.H.K.)
- Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Bo Yu
- UCLA School of Dentistry Restorative Materials and Applied Dental Research Laboratory, Los Angeles, CA 90095, USA; (M.K.); (M.H.); (B.Y.); (T.K.L.); (R.H.K.)
- Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Thomas K. Lee
- UCLA School of Dentistry Restorative Materials and Applied Dental Research Laboratory, Los Angeles, CA 90095, USA; (M.K.); (M.H.); (B.Y.); (T.K.L.); (R.H.K.)
- Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Reuben H. Kim
- UCLA School of Dentistry Restorative Materials and Applied Dental Research Laboratory, Los Angeles, CA 90095, USA; (M.K.); (M.H.); (B.Y.); (T.K.L.); (R.H.K.)
- Section of Restorative Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Deuk-Won Jo
- Section of Dentistry, Department of Prosthodontics, Seoul National University Bundang Hospital, Seongnam 13620, Korea
- Correspondence: ; Tel.: +82-31-787-7548
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Antonini LM, Menezes TL, Dos Santos AG, Takimi AS, Villarinho DJ, Dos Santos BP, Camassola M, Marcuzzo JS, de Fraga Malfatti C. Osteogenic differentiation of bone marrow-derived mesenchymal stem cells on anodized niobium surface. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:104. [PMID: 31493056 DOI: 10.1007/s10856-019-6305-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Currently, titanium and its alloys are the most used materials for biomedical applications. However, because of the high costs of these metals, new materials, such as niobium, have been researched. Niobium appears as a promising material due to its biocompatibility, and excellent corrosion resistance. In this work, anodized niobium samples were produced and characterized. Their capacity to support the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BM-MSCs) was also tested. The anodized niobium samples were characterized by SEM, profilometry, XPS, and wettability. BM-MSCs were cultured on the samples during 14 days, and tested for cell adhesion, metabolic activity, alkaline phosphatase activity, and mineralization. Results demonstrated that anodization promotes the formation of a hydrophilic nanoporous oxide layer on the Nb surface, which can contribute to the increase in the metabolic activity, and in osteogenic differentiation of BM-MSCs, as well as to the extracellular matrix mineralization.
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Affiliation(s)
- Leonardo Marasca Antonini
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil.
| | - Tiago Lemos Menezes
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
| | - Adilar Gonçalves Dos Santos
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
| | - Antonio Shigueaki Takimi
- ELETROCORR/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 216, Porto Alegre, RS, 91501-970, Brazil
| | | | - Bruno Paiva Dos Santos
- Laboratory of Tissue Engineering - BioTis, Inserm U1026, University of Bordeaux, 146 Rue Léo Saignat, Bât. 4A, 2ème étage, Bordeaux, 33076, France
| | - Melissa Camassola
- Programa de Pós-graduação em Biologia Celular e Molecular Aplicada à Saúde (PPGBioSaúde), Universidade Luterana do Brasil, Laboratório de Células-Tronco e Engenharia de Tecidos, Av. Farroupilha, São José, Canoas, RS, 92425900, Brazil
| | - Jossano Saldanha Marcuzzo
- INPE, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1.758 - Jardim da Granja, São José dos Campos, SP, 12228-970, Brazil
| | - Célia de Fraga Malfatti
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
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Ali MRW, Mustafa M, Bårdsen A, Bletsa A. Tricalcium silicate cements: osteogenic and angiogenic responses of human bone marrow stem cells. Eur J Oral Sci 2019; 127:261-268. [PMID: 30958908 DOI: 10.1111/eos.12613] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Tricalcium silicate cements (TSCs) are used in endodontic procedures to promote wound healing and hard tissue formation. The aim of this study was to evaluate and compare the effect of commonly used TSCs [mineral trioxide aggregate (MTA), Biodentine, and TotalFill] on cellular metabolism and osteogenic/angiogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs) in vitro. We tested the null hypothesis of no difference between MTA, Biodentine, and TotalFill in stem cell responses. Cells were subjected to eluates of the tested materials for up to 14 d. Cell viability was evaluated using the 3-(4,5-dimethyl-thiazoyl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. Real-time PCR was used to determine the levels of expression of the osteogenic factors alkaline phosphatase (ALP), osteoprotegerin (OPG), osteocalcin (OC), and collagen 1A (COL1A1), and the angiogenic factors vascular endothelial growth factor A (VEGFA) and fibroblast growth factor 1 (FGF1). ELISAs were used to measure the levels of VEGFA and ALP in culture supernatants. Mineralization in vitro of hBMSCs was assessed using Alizarin Red staining. The hBMSCs tolerated exposure to TSCs well, with Biodentine showing the most favorable effect on cell viability. Expression of ALP, COL1A1, OPG, and VEGFA were differentially affected by the materials, with Biodentine and TotalFill inducing earlier changes at gene level. Increased mineralization was observed with time, after exposure to all TSCs tested, with MTA showing the greatest effect. The results revealed different responses of hBMSCs to TSCs in vitro.
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Affiliation(s)
- Mohamed R W Ali
- Faculty of Medicine, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Manal Mustafa
- Oral Health Centre of Expertise in Western Norway, Bergen, Norway
| | - Asgeir Bårdsen
- Faculty of Medicine, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Athanasia Bletsa
- Faculty of Medicine, Department of Clinical Dentistry, University of Bergen, Bergen, Norway.,Oral Health Centre of Expertise in Western Norway, Bergen, Norway
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Silva GF, Guerreiro-Tanomaru JM, da Fonseca TS, Bernardi MIB, Sasso-Cerri E, Tanomaru-Filho M, Cerri PS. Zirconium oxide and niobium oxide used as radiopacifiers in a calcium silicate-based material stimulate fibroblast proliferation and collagen formation. Int Endod J 2017; 50 Suppl 2:e95-e108. [DOI: 10.1111/iej.12789] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 04/27/2017] [Indexed: 01/16/2023]
Affiliation(s)
- G. F. Silva
- Department of Restorative Dentistry; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
| | - J. M. Guerreiro-Tanomaru
- Department of Restorative Dentistry; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
| | - T. S. da Fonseca
- Department of Restorative Dentistry; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
| | - M. I. B. Bernardi
- Grupo Crescimento de Cristais e Materiais Cerâmicos; Physics Institute of São Carlos; University of São Paulo (USP); São Carlos Brazil
| | - E. Sasso-Cerri
- Laboratory of Histology and Embryology; Department of Morphology; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
| | - M. Tanomaru-Filho
- Department of Restorative Dentistry; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
| | - P. S. Cerri
- Laboratory of Histology and Embryology; Department of Morphology; School of Dentistry; São Paulo State University (UNESP); Araraquara Brazil
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Mendes MS, Resende LD, Pinto CA, Raldi DP, Cardoso FG, Habitante SM. Radiopacity of Mineral Trioxide Aggregate with and without Inclusion of Silver Nanoparticles. J Contemp Dent Pract 2017. [PMID: 28621272 DOI: 10.5005/jp-journals-10024-2063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
AIM The aim of this study was to investigate the inclusion of silver nanoparticles (Ag NPs) in the mineral trioxide aggregate (MTA) composition to know which changes will result in the radiopacity of the material. MATERIALS AND METHODS The experiment was performed according to the American National Standard Institute/American Dental Association specification no. 57/2000 and ISO 6876/2001. Five plates with five holes measuring 1 mm in depth and 5 mm in internal diameter were filled according to the different experimental groups as follows: white mineral trioxide aggregate (WMTA) + NP50 - W MTA with liquid Ag NP 50 ppm, WMTA + NP30 - W MTA with liquid Ag NP 30 ppm, WMTA + NP22 - W MTA with liquid Ag NP 22 ppm, WMTA + NPP - white MTA with liquid Ag NP and powder 1%, WMTA (control). After filling the plates, they were kept in an incubator at 37°C in relative humidity for setting. Each sample was positioned along an aluminum step-wedge placed above the Opteo digital sensor system. The image was divided into four quadrants, and three readings were made for each quadrant to render the average of each quadrant. The resulting data were submitted to Kruskal-Wallis and Dunn's tests. RESULTS The results showed statistically significant differences between WMTA + NP30, WMTA + NP22, and WMTA + NPP interactions compared with WMTA (control) (p < 0.05). The radiopacity was in descending order: WMTA + NPP, WMTA + NP22, WMTA + NP30, MTA + NP50, and WMTA. CONCLUSION Silver NPs changed the radiopacity of WMTA, being more evident in WMTA + NP powder at 1% weight. CLINICAL SIGNIFICANCE The low radiopacity of MTA makes it difficult for any radiographic observation. The Ag NPs appear as an alternative, being an excellent radiopacifier as they have excellent antimicrobial property and relatively low toxicity.
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Affiliation(s)
- Mariana Ss Mendes
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil
| | - Leonardo D Resende
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil
| | - Cláudia A Pinto
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil
| | - Denise P Raldi
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil
| | - Flavia Gr Cardoso
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil
| | - Sandra M Habitante
- Endodontic Division, Department of Odontology, University of Taubaté, Taubaté, São Paulo, Brazil, Phone: +0036254149, e-mail:
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Samiei M, Janani M, Asl-Aminabadi N, Ghasemi N, Divband B, Shirazi S, Kafili K. Effect of the TiO2 nanoparticles on the selected physical properties of mineral trioxide aggregate. J Clin Exp Dent 2017; 9:e191-e195. [PMID: 28210434 PMCID: PMC5303316 DOI: 10.4317/jced.53166] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/29/2016] [Indexed: 12/28/2022] Open
Abstract
Background Some of the efforts to improve the properties of Mineral Trioxide Aggregate (MTA) include incorporation of some nanoparticles such as Titanium dioxide (TiO2). The aim of this study was to evaluate the effect of TiO2 nanoparticles on the setting time, working time, push-out bond strength and compressive strength of MTA. Material and Methods The physical properties to be evaluated were determined using the ISO 6786:2001 and 9917 specifications. Fifteen samples of each material (MTA or MTA with 1% weight ratio of TiO2 Nanoparticles) were prepared for any evaluated physical property. Data were analyzed using descriptive statistics and T-test. Statistical significance was set at P<0.05. Results There was the significant effect of the material type (presence and absence of TiO2 nanoparticles) on the push-out bond strength, compressive strength, working time and setting time, with significantly higher values achieved in the group with TiO2 nanoparticles than the group without these particles (P=0.01 for the setting time and compressive strength, P=0.03 for the working time and P=0.001 for the bond strength). Conclusions Based on the findings of this in vitro study, incorporation of the TiO2 nanoparticles with weight ratio of 1% increased the setting time, working time, compressive strength and push out bond strength of MTA. Key words:Mineral trioxide aggregate, nanoparticles, physical properties, titanium dioxide.
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Affiliation(s)
- Mohammad Samiei
- Associate Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Maryam Janani
- Assistant Professor, Department of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Naser Asl-Aminabadi
- Professor, Department of Pediatric Dentistry, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Negin Ghasemi
- Assistant Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Baharak Divband
- Assistant Professor, Department of Chemistry, Tabriz University , Tabriz, Iran
| | - Sajjad Shirazi
- Research Assistant, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
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Guerreiro-Tanomaru JM, Vázquez-García FA, Bosso-Martelo R, Bernardi MIB, Faria G, Tanomaru M. Effect of addition of nano-hydroxyapatite on physico-chemical and antibiofilm properties of calcium silicate cements. J Appl Oral Sci 2016; 24:204-10. [PMID: 27383700 PMCID: PMC5022225 DOI: 10.1590/1678-775720150422] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 02/15/2016] [Indexed: 11/22/2022] Open
Abstract
Objective Mineral Trioxide Aggregate (MTA) is a calcium silicate cement composed of Portland cement (PC) and bismuth oxide. Hydroxyapatite has been incorporated to enhance mechanical and biological properties of dental materials. This study evaluated physicochemical and mechanical properties and antibiofilm activity of MTA and PC associated with zirconium oxide (ZrO2) and hydroxyapatite nanoparticles (HAn). Material and Methods White MTA (Angelus, Brazil); PC (70%)+ZrO2 (30%); PC (60%)+ZrO2 (30%)+HAn (10%); PC (50%)+ZrO2 (30%)+HAn (20%) were evaluated. The pH was assessed by a digital pH-meter and solubility by mass loss. Setting time was evaluated by using Gilmore needles. Compressive strength was analyzed by mechanical test. Samples were radiographed alongside an aluminum step wedge to evaluate radiopacity. For the antibiofilm evaluation, materials were placed in direct contact with E. faecalis biofilm induced on dentine blocks. The number of colony-forming units (CFU mL-1) in the remaining biolfilm was evaluated. The results were submitted to ANOVA and the Tukey test, with 5% significance. Results There was no difference in pH levels of PC+ZrO2, PC+ZrO2+HAn (10%) and PC+ZrO2+HAn (20%) (p>0.05) and these cements presented higher pH levels than MTA (p<0.05). The highest solubility was observed in PC+ZrO2+HAn (10%) and PC+ZrO2+HAn (20%) (p<0.05). MTA had the shortest initial setting time (p<0.05). All the materials showed radiopacity higher than 3 mmAl. PC+ZrO2 and MTA had the highest compressive strength (p<0.05). Materials did not completely neutralize the bacterial biofilm, but the association with HAn provided greater bacterial reduction than MTA and PC+ZrO2 (p<0.05) after the post-manipulation period of 2 days. Conclusions The addition of HAn to PC associated with ZrO2 harmed the compressive strength and solubility. On the other hand, HAn did not change the pH and the initial setting time, but improved the radiopacity (HAn 10%), the final setting time and the E. faecalis antibiofilm activity of the cement.
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Affiliation(s)
- Juliane Maria Guerreiro-Tanomaru
- - Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | - Fernando Antonio Vázquez-García
- - Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | - Roberta Bosso-Martelo
- - Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | | | - Gisele Faria
- - Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | - Mario Tanomaru
- - Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
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Gomes-Cornélio AL, Rodrigues EM, Salles LP, Mestieri LB, Faria G, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Bioactivity of MTA Plus, Biodentine and an experimental calcium silicate-based cement on human osteoblast-like cells. Int Endod J 2016; 50:39-47. [PMID: 26610093 DOI: 10.1111/iej.12589] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/20/2015] [Indexed: 01/16/2023]
Abstract
AIM To compare the bioactivity of Biodentine (BIO, Septodont), MTA Plus (MTA P, Avalon) and calcium silicate experimental cement (CSC) with resin (CSCR) associated with zirconium (CSCR ZrO2 ) or niobium (CSCR Nb2 O5 ) oxide as radiopacifiers. METHODOLOGY According to the relevance of osteoblastic cell response for mineralized tissue repair, human osteoblastic cells (Saos-2) were exposed to test materials and assessed for viability (MTT), cell proliferation, gene expression of alkaline phosphatase (ALP) osteogenic marker by real-time PCR (RT-qPCR), ALP activity assay and alizarin red staining (ARS) to detect mineralization nodule deposition in osteogenic medium. Unexposed cells acted as the control group (C). Statistical analysis was carried out using ANOVA and the Bonferroni post-test (P < 0.05). RESULTS All tested cements showed dose-dependent responses in cell viability (MTT). Exposed cells revealed good viability (80-130% compared to the control group) in the highest dilutions of all types of cement. MTA P, BIO and CSCR ZrO2 significantly increased the velocity of cell proliferation after three days of cell exposure in the wound-healing assay (P < 0.05), which corroborated MTT data. On day 3, the ALP transcript level increased, especially to CSCR Nb2 O5 (P < 0.05). All cements exhibited suitable ALP enzyme activity, highlighting the 7-day period of cell exposure. ARS, CSCR Nb2 O5 , revealed a significant potential to induce mineralization in vitro. CONCLUSIONS All materials had suitable biocompatibility and bioactivity. The MTA P, BIO and CSCR ZrO2 groups had the highest viability rates and velocity of proliferation whilst the CSCR Nb2 O5 group produced more mineralized nodules.
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Affiliation(s)
- A L Gomes-Cornélio
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - E M Rodrigues
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - L P Salles
- Cellular Biology Department, Institute of Biological Sciences, University of Brasília, Distrito Federal, Brazil
| | - L B Mestieri
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - G Faria
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - J M Guerreiro-Tanomaru
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
| | - M Tanomaru-Filho
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
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GARCIA LDFR, SANTOS ADD, MORAES JCS, COSTA CADS. Cytotoxic effects of new MTA-based cement formulations on fibroblast-like MDPL-20 cells. Braz Oral Res 2016; 30:S1806-83242016000100224. [DOI: 10.1590/1807-3107bor-2016.vol30.0028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 11/11/2015] [Indexed: 11/22/2022] Open
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