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Martens LC, Cauwels RGEC, Van Acker JWG, Joshi KR, Hanet PN, Rajasekharan S. Biodentine™ as a temporary filling in deep carious lesions in permanent teeth: a prospective observational 33-month follow-up study. Eur Arch Paediatr Dent 2024; 25:277-284. [PMID: 38427158 DOI: 10.1007/s40368-024-00869-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 01/11/2024] [Indexed: 03/02/2024]
Abstract
PURPOSE The study aimed to evaluate temporary fillings using Biodentine™ in asymptomatic deep carious lesions after 12, 24, and 36 months in school children from the remote village of Kerung, Nepal. METHODS From November 2018 to November 2019, 91 temporary fillings were placed using Biodentine™ (a hydraulic calcium silicate cement) in permanent molars with deep carious lesions of schoolchildren in the remote district of Kerung, Nepal. These restorations were performed after selective caries removal in a non-dental setting with hand instruments and cotton roll isolation, as electric motors and saliva ejection systems were unavailable. In total, 78 single-surface and 13 multi-surface fillings were placed. Clinical and radiographic follow-up periods encompassed 12, 21, and 33 months, respectively. RESULTS After 12 months, all single-surface fillings (100%) survived, whilst all multi-surface fillings were partially or entirely lost. The survival rate of single-surface restorations after 21 and 33 months was 67.6% and 50%, respectively. Radiographically, no pathology was observed. CONCLUSION This study showed that Biodentine could be used in deep carious lesions as a temporary filling in single-surface lesions for at least up to 1 year and in a substantial number of cases for up to 21 and 33 months.
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Affiliation(s)
- L C Martens
- ELOHA (Equal Lifelong Oral Health for All) Research Group, Department of Paediatric Dentistry, Oral Health Sciences, Ghent University, Corneel Heymanslaan 10 (P8), B-9000, Ghent, Belgium.
| | - R G E C Cauwels
- ELOHA (Equal Lifelong Oral Health for All) Research Group, Department of Paediatric Dentistry, Oral Health Sciences, Ghent University, Corneel Heymanslaan 10 (P8), B-9000, Ghent, Belgium
| | - J W G Van Acker
- ELOHA (Equal Lifelong Oral Health for All) Research Group, Department of Paediatric Dentistry, Oral Health Sciences, Ghent University, Corneel Heymanslaan 10 (P8), B-9000, Ghent, Belgium
| | - K R Joshi
- Consultant Pediatric Dentist at Kanti Children Hospital, Ministry of Health, Govt. of Nepal, Kathmandu, Nepal
| | - P N Hanet
- Initiator of the Kerung Project, Meudon, France
| | - S Rajasekharan
- ELOHA (Equal Lifelong Oral Health for All) Research Group, Department of Paediatric Dentistry, Oral Health Sciences, Ghent University, Corneel Heymanslaan 10 (P8), B-9000, Ghent, Belgium
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Marković L, Ivanišević A, Matijević J, Chan RSM, Tsoi JKH, Šnjarić D, Gjorgievska E. Micro-CT analysis and leakage of bioceramic retrofillings after ultrasonic and Er:YAG laser cavity preparations: an in vitro study. Lasers Med Sci 2023; 38:145. [PMID: 37347307 DOI: 10.1007/s10103-023-03809-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/11/2023] [Indexed: 06/23/2023]
Abstract
The purpose of the study was to determine the influence of preparation techniques on marginal adaptation and sealing of Biodentine™ and TotalFill® RRM bioceramic retrograde fillings. Fifty-two single-root teeth extracted for periodontal reasons were used. Root canals were instrumented using Reciproc Blue #25 and obturated using a single cone technique with an AH Plus® root canal sealer. Retrograde cavities were prepared with Piezomed device (Piezo), Er:YAG laser in short-pulse(SP) and quantum square pulse(QSP) modes and filled with Biodentine™ (BD) or TotalFill® RRM (TF). There were 6 groups (n=8): (1) Piezo BD, (2) Piezo TF, (3) SP BD, (4) SP TF, (5) QSP BD, and (6) QSP TF, and positive and negative controls (n=2). Micro-CT analysis was performed on two samples from each group. Percentage volumes of internal and external voids in apical 1.5 mm were determined. Rhodamine B dye leakage was done on six samples. The samples were cut longitudinally and examined under a stereomicroscope. Digital recordings were analyzed in ImageJ software. The deepest penetration of color in mm was recorded. The data were statistically analyzed using ANOVA and Duncan's test at the level of significance α=0.05. TotalFill® RRM performed significantly better than Biodentine™ in terms of sealing (p<0.05) and marginal adaptation, as evaluated by micro-CT. Sealing was significantly better in SP compared to QSP mode preparations (p<0.05). Differences between Piezomed and laser modes were not significantly different (p>0.05). Sealing was statistically significantly better with TotalFill® RRM compared to Biodentine™ and in Er:YAG SP preparations compared to Er:YAG QSP.
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Affiliation(s)
| | - Ana Ivanišević
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.
| | - Jurica Matijević
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Rosalind Sin Man Chan
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, SAR, Hong Kong, People's Republic of China
| | - James Kit Hon Tsoi
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, SAR, Hong Kong, People's Republic of China
| | - Damir Šnjarić
- Department for Endodontics and Restorative Dentistry, School of Dental Medicine, University of Rijeka, Rijeka, Croatia
| | - Elizabeta Gjorgievska
- Department of Paediatric and Preventive Dentistry, Faculty of Dental Medicine, University "Ss Cyril and Methodius" Skopje, Skopje, Republic of Macedonia
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Maciel Pires P, Ionescu AC, Pérez-Gracia MT, Vezzoli E, Soares IPM, Brambilla E, de Almeida Neves A, Sauro S. Assessment of the remineralisation induced by contemporary ion-releasing materials in mineral-depleted dentine. Clin Oral Investig 2022; 26:6195-6207. [PMID: 35670863 DOI: 10.1007/s00784-022-04569-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/29/2022] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Evaluate the ability of current ion-releasing materials to remineralise bacteria-driven artificial caries lesions. MATERIALS AND METHODS Standardised class I cavities were obtained in 60 extracted human molars. Specimens underwent a microbiological cariogenic protocol (28 days) to generate artificial caries lesions and then were randomly divided into four restorative groups: adhesive + composite (negative control); glass ionomer cement (GIC); calcium silicate cement (MTA); and resin-modified calcium silicate cement (RMTA). Microhardness analysis (ΔKHN) was performed on 40 specimens (10/group, t = 30 days, 45 days, 60 days in artificial saliva, AS). Micro-CT scans were acquired (3/group, t = 0 days, 30 days, and 90 days in AS). Confocal microscopy was employed for interfacial ultra-morphology analysis (2/group, t = 0 days and 60 days in AS). Additional specimens were prepared and processed for scanning electron microscopy (SEM) and FTIR (n = 3/group + control) to analyse the ability of the tested materials to induce apatite formation on totally demineralised dentine discs (60 days in AS). Statistical analyses were performed with a significance level of 5%. RESULTS Adhesive + composite specimens showed the lowest ΔKHN values and the presence of gaps at the interface when assessed through micro-CT even after storage in AS. Conversely, all the tested ion-releasing materials presented an increase in ΔKHN after storage (p < 0.05), while MTA best reduced the demineralised artificial carious lesions gap at the interface. MTA and RMTA also showed apatite deposition on totally demineralised dentine surfaces (SEM and FTIR). CONCLUSIONS All tested ion-releasing materials expressed mineral precipitation in demineralised dentine. Additionally, calcium silicate-based materials induced apatite precipitation and hardness recovery of artificial carious dentine lesions over time. CLINICAL RELEVANCE Current ion-releasing materials can induce remineralisation of carious dentine. MTA shows enhanced ability of nucleation/precipitation of hydroxyapatite compared to RMTA and GIC, which may be more appropriate to recover severe mineral-depleted dentine.
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Affiliation(s)
- Paula Maciel Pires
- Department of Pediatric Dentistry, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil.,Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Cardenal Herrera-CEU University, CEU Universities, Valencia, Spain
| | - Andrei Cristian Ionescu
- Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical and Dental Sciences, Università Degli Studi Di Milano, Milan, Italy
| | - Maria Teresa Pérez-Gracia
- Microbiology, Departamento de Farmacia, Cardenal Herrera-CEU University, CEU Universities, Valencia, Spain
| | - Elena Vezzoli
- Department of Biomedical Sciences for Health, Università Degli Studi Di Milano, Milan, Italy
| | - Igor Paulino Mendes Soares
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University UNESP, Araraquara, Brazil
| | - Eugenio Brambilla
- Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical and Dental Sciences, Università Degli Studi Di Milano, Milan, Italy
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Salvatore Sauro
- Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Cardenal Herrera-CEU University, CEU Universities, Valencia, Spain.
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Sajini S, Atmeh AR, Banerjee A, Festy F, Cook RJ, Andiappan M, Watson TF. Glass-ionomer and calcium silicate-based cements interactions with human dentine in health and disease: Two-photon fluorescence microscopy and Raman spectroscopy analysis. Dent Mater 2022; 38:1710-1720. [PMID: 36123189 DOI: 10.1016/j.dental.2022.09.001] [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: 05/29/2022] [Revised: 08/31/2022] [Accepted: 09/08/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To investigate the potential mineralising effects of calcium silicate-based dentine replacement material (Biodentine™) in comparison with glass-ionomer cement (GIC) (Fuji IX™) on different human dentine substrates using a multimodal non-invasive optical assessment. METHODS Cements were applied on artificially demineralised or naturally carious dentine and stored for 4 weeks in phosphate-rich media +/- tetracycline used for mineralisation labelling. Interfacial dentine was examined from the same sample and location before and after aging using two-photon fluorescence microscopy, fluorescence lifetime imaging (FLIM) and second harmonic generation (SHG) imaging. Additionally, Raman spectroscopy was used to detect changes in the mineral content of dentine. RESULTS Significant changes in the fluorescence intensity and lifetime were detected in partially demineralised dentine and caries-affected dentine underneath both tested cements, after storage (p < 0.001). This was associated with a significant increase in the mineral content as indicated by the increased intensity of the phosphate Raman peak located at 959 cm-1 (p < 0.0001). Caries-infected dentine showed significant fluorescence changes under Biodentine™ after storage (p < 0.001), but not under GIC (p = 0.44). Tetracycline binding induced a reduction in the fluorescence lifetime with comparable increase in the fluorescence intensity in both cements' groups within the affected dentine (p < 0.001). Significance Two-photon fluorescence microscopy can be used efficiently for non-destructive in-vitro dentine caries characterisation providing a technique for studying the same dentine-cement interface over time and detect changes. Biodentine™ demonstrated comparable remineralising potential to GIC, in addition to inducing remineralisation of caries-infected dentine. This may suggest using Biodentine™ as part of minimally invasive operative dentistry (MID) in caries management.
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Affiliation(s)
- Shara Sajini
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK; Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Amre R Atmeh
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK; Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, United Arab Emirates.
| | - Avijit Banerjee
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | | | - Richard J Cook
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Manoharan Andiappan
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Timothy F Watson
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
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ToF-SIMS Analysis of Demineralized Dentin Biomodified with Calcium Phosphate and Collagen Crosslinking: Effect on Marginal Adaptation of Class V Adhesive Restorations. MATERIALS 2021; 14:ma14164535. [PMID: 34443059 PMCID: PMC8398264 DOI: 10.3390/ma14164535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/06/2021] [Accepted: 08/09/2021] [Indexed: 12/05/2022]
Abstract
This study aimed to assess the effect of biomodification before adhesive procedures on the tooth-restoration interface of class V restorations located in caries-simulated vs. sound dentin, and the quality of dentin surface by time-of-flight secondary ion mass spectrometry (ToF-SIMS). Class V cavities located on cervical dentin were prepared on the buccal surfaces of extracted human molars under the simulation of intratubular fluid flow. Two dentin types, i.e., sound and demineralized by formic-acid, were biomodified with 1% riboflavin and calcium phosphate (CaP) prior to the application of a universal adhesive (Clearfil Universal Bond) in etch and rinse or self-etch mode, and a conventional micro hybrid composite (Clearfil APX). Restorations were subjected to thermo mechanical fatigue test and percentages of continuous margins (% CM) before/after fatigue were compared. Bio modification of dentin surfaces at the molecular level was analyzed by Time-of-Flight Secondary Mass Spectometry (ToF-SIMS). % CM were still significantly higher in tooth-restoration interfaces on sound dentin. Meanwhile, biomodification with riboflavin and CaP had no detrimental effect on adhesion and in carious dentin, it improved the % CM both before and after loading. Etching carious dentin with phosphoric acid provided with the lowest results, leading even to restoration loss. The presence of molecule fragments of riboflavin and CaP were detected by ToF-SIMS, evidencing dentin biomodification. The adhesive interface involving carious dentin could be improved by the use of a collagen crosslinker and CaP prior to adhesive procedures.
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Yeh CL, Bhorade R, Hsu TT, Chen CY, Lin CP. Mechanical assessment and odontogenic behavior of a 3D-printed mesoporous calcium silicate/calcium sulfate/poly-ε-caprolactone composite scaffold. J Formos Med Assoc 2021; 121:510-518. [PMID: 34266707 DOI: 10.1016/j.jfma.2021.06.025] [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: 06/08/2021] [Revised: 06/18/2021] [Accepted: 06/24/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND/PURPOSE Tissue engineering in dentistry has fundamentally changed the way endodontists assess treatment options. Our previous study found that quercetin-contained mesoporous calcium silicate/calcium sulfate (MSCSQ) could induce hard tissue defect region regeneration. This study focused on whether the MSCSQ scaffold could also be effective in regulating odontogenesis and dentin regeneration. METHODS In this study, we fabricated MSCSQ composite scaffolds using the 3D printing technique. The characteristics of the MSCSQ scaffold were examined by scanning electron microscope (SEM), and mechanical properties were also assessed. In addition, we evaluated the cell viability, cell proliferation, odontogenic-related protein expression, and mineralization behavior of human dental pulp stem cells (hDPSCs) cultured on different scaffolds. RESULTS We found the precipitation of spherical-apatite on the scaffold surface rapidly in short periods. The in-vitro results for cell behavior revealed that hDPSCs with an MSCSQ scaffold were significantly higher in cell viability as followed time points. In addition, the specific makers of odontogenesis, such as DSPP and DMP-1 proteins, were induced obviously after culturing the hDPSCs on the MSCSQ scaffold. CONCLUSION Our results demonstrated that MSCSQ scaffolds could enhance physicochemical and biological behaviors compared to mesoporous calcium silicate/calcium sulfate (MSCS) scaffolds. In addition, MSCSQ scaffolds also enhanced odontogenic and immuno-suppressive properties compared to MSCS scaffolds. These results indicated that MSCSQ scaffolds could be considered a potential bioscaffold for clinical applications and dentin regeneration.
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Affiliation(s)
- Chun-Liang Yeh
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Rupali Bhorade
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Tuan-Ti Hsu
- X-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan
| | - Cheng-Yu Chen
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chun-Pin Lin
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
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Lindblad RM, Lassila LVJ, Vallittu PK, Tjäderhane L. The effect of chlorhexidine and dimethyl sulfoxide on long-term sealing ability of two calcium silicate cements in root canal. Dent Mater 2020; 37:328-335. [PMID: 33341245 DOI: 10.1016/j.dental.2020.11.031] [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: 07/27/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To evaluate the long-term effect of chlorhexidine (CHX) and dimethyl sulfoxide (DMSO) on the sealing ability and biomineralization of two different calcium silicate cements (CSC) in root canal. METHODS Sixty human third molar root canals were obturated with ProRoot MTA or Biodentine. Before obturation the canals were irrigated with saline (control), 2% CHX or 5% DMSO. Microleakage was tested after three days and after six months. After additional six months (12 months after root filling) the roots were cut into 2 mm thick dentine discs. The discs were stored in artificial saliva for one year. The bond strength was measured with the push-out method, and the failure mode was evaluated with a stereomicroscope. The most apical disc of each tooth was used for Vickers hardness test. RESULTS No significant differences between the groups was found in initial microleakage. The leakage increased significantly during the 6-month storage in all groups except in Biodentine-CHX group and Biodentine-DMSO group. CHX and DMSO irrigation significantly increased the leakage with ProRoot MTA with time, but there was no statistically significant difference compared to the ProRoot MTA-control group at six months' time point. CHX significantly reduced the push-out bond strength of ProRoot MTA. With Biodentine irrigation with CHX or DMSO resulted with significantly higher push-out strength compared to the Biodentine control group. Fracture analysis showed statistically significant difference in the distribution of the fractures between the groups, but neither CHX nor DMSO change the fracture pattern statistically significantly. With Vickers hardness test ProRoot MTA with and without DMSO as the final irrigant showed significantly higher dentin hardness than any Biodentine-group. SIGNIFICANCE Considering that aging increased the leakage in all groups except with Biodentine-DMSO and the differences in the push-out strength and surface microhardness data, it appears that the time-related biomineralizing effect of MTA and Biodentine does not improve sealing to dentin. CHX significantly reduced ProRoot MTA bond strength and increased pure adhesive failures with both cements.
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Affiliation(s)
- R M Lindblad
- City of Helsinki Health Centre, University Dental Clinic, Helsinki, Finland
| | - L V J Lassila
- Department of Biomaterials Science and Turku Clinical Biomaterials Centre-TCBC, Institute of Dentistry, University of Turku, Turku, Finland
| | - P K Vallittu
- Department of Biomaterials Science and Turku Clinical Biomaterials Centre-TCBC, Institute of Dentistry, University of Turku, Turku, Finland; City of Turku, Welfare Division, Turku, Finland
| | - L Tjäderhane
- Department of Oral and Maxillofacial Diseases, University of Helsinki, and Helsinki University Hospital, Helsinki, Finland, Research Unit of Oral Health Sciences, and Medical Research Center Oulu (MRC Oulu), Oulu University Hospital and University of Oulu, Oulu, Finland.
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Wu IT, Kao PF, Huang YR, Ding SJ. In vitro and in vivo osteogenesis of gelatin-modified calcium silicate cement with washout resistance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111297. [DOI: 10.1016/j.msec.2020.111297] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 07/04/2020] [Accepted: 07/21/2020] [Indexed: 12/11/2022]
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Chen R, Jin R, Li X, Fang X, Yuan D, Chen Z, Yao S, Tang R, Chen Z. Biomimetic remineralization of artificial caries dentin lesion using Ca/P-PILP. Dent Mater 2020; 36:1397-1406. [DOI: 10.1016/j.dental.2020.08.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/19/2020] [Accepted: 08/29/2020] [Indexed: 10/23/2022]
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Kermanshah H, Saeedi R, Ahmadi E, Ranjbar Omrani L. Efficacy of cavity liners with/without atmospheric cold helium plasma jet for dentin remineralization. Biomater Investig Dent 2020; 7:120-125. [PMID: 32939456 PMCID: PMC7470099 DOI: 10.1080/26415275.2020.1803074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Aim: This study aimed to assess the efficacy of cavity liners with/without the atmospheric cold plasma jet (ACPJ) for dentin remineralization.
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Affiliation(s)
- Hamid Kermanshah
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.,Restorative Dentistry Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Saeedi
- School of Dentistry, Shahid Sadoughi University of Medical Sciences, Tehran, Iran
| | - Elham Ahmadi
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.,Restorative Dentistry Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Ladan Ranjbar Omrani
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.,Restorative Dentistry Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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11
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Tu MG, Lee AKX, Lin YH, Huang TH, Ho CC, Shie MY. Caffeic Acid-coated Nanolayer on Mineral Trioxide Aggregate Potentiates the Host Immune Responses, Angiogenesis, and Odontogenesis. J Endod 2020; 46:1455-1464. [PMID: 32668309 DOI: 10.1016/j.joen.2020.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 06/08/2020] [Accepted: 07/01/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION The aim of this study was to investigate whether mineral trioxide aggregate (MTA) can be modified with caffeic acid (CA) to form caffeic acid/mineral trioxide aggregate (CAMTA) cement and to evaluate its physicochemical and biological properties as well as its capability in immune suppression and angiogenesis. METHODS MTA was immersed in trishydroxymethyl aminomethane buffer with CA to allow coating onto MTA powders. X-ray diffractometry and tensile stress-strain tests were conducted to assess for physical characteristics of CAMTA and to evaluate for successful modification of MTA. Then, the CAMTA cement was immersed in simulated body fluid to evaluate its hydroxyapatite formation capabilities and Si release profiles. In addition, RAW 264.7 cells and human dental pulp stem cells were used to evaluate CAMTA's immunosuppressive capabilities and cell responses, respectively. hDPSCs were also used to assess CAMTA's angiogenic capabilities. RESULTS The X-ray diffractometry results showed that CA can be successfully coated onto MTA without disrupting or losing MTA's original structural properties, thus allowing us to retain the initial advantages of MTA. CAMTA was shown to have higher mechanical properties compared with MTA and had rougher pitted surfaces, which were hypothesized to lead to enhanced adhesion, proliferation, and secretion of angiogenic- and odontogenic-related proteins. In addition, it was found that CAMTA was able to enhance hydroxyapatite formation and immunosuppressive capabilities compared with MTA. CONCLUSIONS CAMTA cements were found to have improved physicochemical and biological characteristics compared with their counterpart. In addition, CAMTA cements had enhanced odontogenic, angiogenic, and immunosuppressive properties compared with MTA. All of the results of this study proved that CAMTA cements could be a biomaterial for future clinical applications and tissue engineering use.
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Affiliation(s)
- Ming-Gene Tu
- School of Dentistry, China Medical University, Taichung City, Taiwan; Department of Dentistry, China Medical University Hospital, Taichung City, Taiwan
| | - Alvin Kai-Xing Lee
- School of Medicine, China Medical University, Taichung City, Taiwan; x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung City, Taiwan
| | - Yen-Hong Lin
- x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung City, Taiwan; The PhD Program for Medical Engineering and Rehabilitation Science, China Medical University, Taichung City, Taiwan
| | - Tsui-Hsien Huang
- School of Dentistry, Chung Shan Medical University Hospital, Taichung City, Taiwan; Department of Stomatology, Chung Shan Medical University Hospital, Taichung City, Taiwan
| | - Chia-Che Ho
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung City, Taiwan; 3D Printing Medical Research Institute, Asia University, Taichung City, Taiwan
| | - Ming-You Shie
- School of Dentistry, China Medical University, Taichung City, Taiwan; x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung City, Taiwan; Department of Bioinformatics and Medical Engineering, Asia University, Taichung City, Taiwan.
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12
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Daneshpoor N, Pishevar L. Comparative evaluation of bioactive cements on biomimetic remineralization of dentin. J Clin Exp Dent 2020; 12:e291-e299. [PMID: 32190201 PMCID: PMC7071542 DOI: 10.4317/jced.56500] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/08/2020] [Indexed: 12/18/2022] Open
Abstract
Background This study was designed to quantitatively compare the presence of apatite peaks on demineralized dentin to induced bio-mimetically by bioactive commercial materials.
Material and Methods Dentin slice specimens (n=6) were prepared and demineralized by by17% EDTA for 2 hours. Each disks materials (Theracal, Biodentine, CPP-ACP) were freshly prepared and was maintained in close contact with a demineralized dentin specimen immersed in PBS solution during one week. To evaluation of bioactivity, cements disks (n=6) were prepared from each material and immersed in PBS solution for one week. The bioactivity and remineralization ability was evaluated using FTIR spectroscopy and Scanning Electron Microscopy. The Ca/P ratio of the surface of dentin and cements disks were compared with one -way ANOVA, independent T test and Duncan test (α=0.05).
Results Ca/P weight ratio of Biodentine (187.5) was significantly higher than Theracal (10.10) and Theracal higher than CPP-ACP (0.37) (P=0.008). Demineralized dentin in contact with Test materials, indicated Ca and P peak after 7 days, but not showed statistically differences between the groups (P=0.08).
Conclusions The outcome revealed that bioactive cements and CPP-ACP had bioactivity capability during one week. Biodentine had higher bioactivity between others. Demineralized dentin could be remineralized with bioactive materials. Key words:Bioactive, cements, fourier transform infrared spectroscopy, scanning electron microscopy, tooth remineralization.
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Affiliation(s)
| | - Leila Pishevar
- Department of operative dentistry, faculty of dentistry, Isfahan (khorasgan) branch, Islamic Azad university, Isfahan, Iran
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Kunert M, Lukomska-Szymanska M. Bio-Inductive Materials in Direct and Indirect Pulp Capping-A Review Article. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1204. [PMID: 32155997 PMCID: PMC7085085 DOI: 10.3390/ma13051204] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/25/2022]
Abstract
The article is aimed at analyzing the available research and comparing the properties of bio-inductive materials in direct and indirect pulp capping procedures. The properties and clinical performances of four calcium-silicate cements (ProRoot MTA, MTA Angelus, RetroMTA, Biodentine), a light-cured calcium silicate-based material (TheraCal LC) and an enhanced resin-modified glass-ionomer (ACTIVA BioACTIVE) are widely discussed. A correlation of in vitro and in vivo data revealed that, currently, the most validated material for pulp capping procedures is still MTA. Despite Biodentine's superiority in relatively easier manipulation, competitive pricing and predictable clinical outcome, more long-term clinical studies on Biodentine as a pulp capping agent are needed. According to available research, there is also insufficient evidence to support the use of TheraCal LC or ACTIVA BioACTIVE BASE/LINER in vital pulp therapy.
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Pedano MS, Li X, Camargo B, Hauben E, De Vleeschauwer S, Yoshihara K, Van Landuyt K, Yoshida Y, Van Meerbeek B. Injectable phosphopullulan-functionalized calcium-silicate cement for pulp-tissue engineering: An in-vivo and ex-vivo study. Dent Mater 2020; 36:512-526. [PMID: 32061443 DOI: 10.1016/j.dental.2020.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 12/04/2019] [Accepted: 01/14/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To evaluate, by means of an ex-vivo human tooth-culture model and in-vivo minipig animal study, the pulpal inflammatory reaction and reparative dentin-formation capacity of an injectable phosphopullulan-based calcium-silicate cement (GC, Tokyo, Japan) upon pulp capping, this in comparison with the commercial reference material Biodentine (Septodont). METHODS For the ex-vivo tooth model, 9 freshly-extracted teeth from 3 different patients were pulp-capped with the experimental biomaterial (n = 3), Biodentine (n = 3) or left uncapped (control; n = 3). The teeth were kept in fresh culture medium for 4 weeks and, upon fixation three-dimensional Micro-CT and histology were performed. For the in-vivo animal study, 40 teeth from 3 minipigs were exposed and pulp capped with the experimental biomaterial containing phosphopullulan (n = 24) or Biodentine (n = 16) for 7 or 70 days. The inflammatory reaction and the tissue-regenerative potential was qualitatively and semi-quantitatively characterized using three-dimensional micro-CT and histology. RESULTS Ex vivo, the treatment with the experimental phosphopullulan-based calcium-silicate cement and Biodentine stimulated the formation of fibrous tissue and mineralized foci. In vivo, early inflammatory reaction and regeneration of the pulp-tissue interface was promoted by both bioceramic materials after 7 and 70 days, respectively. SIGNIFICANCE Our findings bring new insights into calcium-silicate-mediated dental pulp repair and regeneration. The novel ready-to-use and self-adhering functionalized calcium-silicate cement revealed effective pulpal repair potential.
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Affiliation(s)
- Mariano Simón Pedano
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - Xin Li
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium; Wuhan University, School and Hospital of Stomatology, Ministry of Education, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Wuhan, PR China
| | - Bernardo Camargo
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium; Federal University of Rio de Janeiro, Nuclear Engineering Program, Rio de Janeiro, Brazil
| | - Esther Hauben
- UZ Leuven (University Hospitals Leuven), Laboratory for Pathology & KU Leuven (University of Leuven), Department of Imaging and Pathology, Translational Cell and Tissue Research, Leuven, Belgium
| | | | - Kumiko Yoshihara
- Okayama University Hospital, Center for Innovative Clinical Medicine, Okayama, Japan; National Institute of Advanced Industrial Science and Technology (AIST), Health Research Institute, Takamatsu, Japan
| | - Kirsten Van Landuyt
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - Yasuhiro Yoshida
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Bart Van Meerbeek
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium.
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15
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Sadoon NY, Fathy SM, Osman MF. Effect of Using Biomimetic Analogs on Dentin Remineralization with Bioactive Cements. Braz Dent J 2020; 31:44-51. [DOI: 10.1590/0103-6440202003083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/20/2019] [Indexed: 11/22/2022] Open
Abstract
Abstract This study evaluated the impact of using biomimetic analogs (poly-acrylic acid and sodium tri-meta-phosphate) on dentin remineralization using two cement materials, the first is calcium silicate based and the second is calcium hydroxide based materials. Two standardized occlusal cavities (mesial and distal) were prepared within dentin after removal of occlusal enamel. Artificial demineralized dentin was induced through pH cycling (8 h in demineralizing and 16 h in remineralizing solutions). Demineralized cavities were divided into four groups; two groups received cement materials. The other groups were first treated with biomimetic analogs then restored with pulp cement materials. Teeth were sectioned buccolingually into two halves. Treated cavities with analogs were stored in simulated body fluid containing poly-acrylic acid. Untreated cavities were stored in simulated body fluid only. Ground unstained sections of demineralized dentin were examined using light microscope. Specimens were examined after 1, 6 and 12 weeks of storage using energy dispersive X-ray Spectroscopy (EDX) and Vickers microhardness was evaluated. Two-way ANOVA was used to analyze data statistically. Calcium silicate-based cement group with biomimetic analogs showed the highest statistically significant calcium and phosphorous wt% in addition to highest surface hardness values after 12 weeks of storage. Demineralized dentin ground sections showed increase in light zones after total period of storage. Calcium silicate-based cement showed the best ability to enrich the artificial carious dentin with ions for remineralization. Using biomimetic analogs had a significant impact on demineralized dentin surface hardness improvement.
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Bioactivity potential of Portland cement in regenerative endodontic procedures: From clinic to lab. Dent Mater 2019; 35:1342-1350. [PMID: 31345561 DOI: 10.1016/j.dental.2019.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/09/2019] [Accepted: 07/10/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the bioactivity potential of an hydraulic calcium-silicate cement, Pure Portland Cement Med-PZ (Medcem, Weinfelden, Switzerland: 'MPC'), applied in a tooth extracted because of failed regenerative endodontic procedures (REP) and by means of ex vivo (EV) specimens. METHODS Ten EV cylindrical dentin cavities were prepared and filled with MPC and stored for 1 month in distilled water (DW), Hank's balanced salt solution (HBSS), Dulbecco's phosphate-buffered saline (DPBS), simulated body fluid (SBF), versus no media (NM) serving as control. Six additional EV specimens were filled with MPC and exposed for 2 weeks to leucocyte-and-platelet-rich fibrin (LPRF)-clot (C), LPRF-membrane (M) and LPRF-exudate (E). MPC in the EV specimens and in the coronal part of the REP tooth was analyzed by means of micro-Raman spectroscopy (MR), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). RESULTS SEM showed rough crystallite surfaces for the EV samples and a porous surface for the REP tooth. EDS of the EV samples revealed prominent peaks for Ca, Si and O. Storage in HBSS, DPBS, SBF, exposure to LPRF and the REP tooth showed considerable amounts of P as well. MR exhibited vibrations of phosphate (DPBS, SBF), carbonated hydroxyapatite (DPBS, SBF), calcium carbonate (DW, HBSS, NM, REP-tooth, LPRF-E), oxidized (ferric) proteins (LPRF-E/C/M) and the amide III band (all samples). Hence, only storage of MPC in DPBS and SBF for 1 month revealed bioactivity. SIGNIFICANCE The environmental conditions, namely the laboratory and clinical settings, affect the bioactivity potential of MPC.
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Fathy SM. Remineralization ability of two hydraulic calcium-silicate based dental pulp capping materials: Cell-independent model. J Clin Exp Dent 2019; 11:e360-e366. [PMID: 31110616 PMCID: PMC6522110 DOI: 10.4317/jced.55689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/21/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND This study aimed to evaluate remineralizing ability of two hydraulic calcium-silicate cements (Biodentine and TheraCal LC). MATERIAL AND METHODS Artificial carious lesions were introduced into the pulpal floors (1-1.5 mm) and axial walls of occlusal prepared cavity halves through pH cycling. Cycling was made through demineralizing solution (pH 3), for 8 hours and remineralizing solution (pH 7) for 16 hours. The total period of pH cycling was 14 days. Prepared cavities with the tested materials seated directly on the pulpal floor and in contact with the axial walls were stored in phosphate buffer solutions (PBS) (pH 7.2-7.4). The changes in the weight percentages (wt%) of calcium (Ca) and phosphorus (P) were detected using SEM and energy dispersive X-ray spectroscopy with reference to sound dentin after three intervals (one week, 3 and 6 months). Data were statistically analyzed using two-way ANOVA and Tukey's post hoc test. RESULTS Demineralized dentin, next to Biodentine, showed statistically higher intensities of Ca and P wt% after the three periods of incubation (p< 0.05). Surface mapping of both tested cements and their adjacent demineralized dentin showed increase in overall distribution of previous ions. SEM of subsurface layer under both materials showed filling of most intra-tubular areas with rod-like mineralized structure without significant difference. CONCLUSIONS Biodentine has a higher ability to enrich the artificial carious dentin with significantly higher mineral contents available for remineralization. Both pulp-capping materials have significantly induced remineralization of demineralized dentin beneath them after total period of incubation. Key words:Artificial Caries, Hydraulic Cements, pH Cycling, Remineralization.
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Affiliation(s)
- Salma M Fathy
- Dental Biomaterials Dept., Faculty of Oral and Dental Medicine, Zagazig University, Egypt
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Neves AB, Bergstrom TG, Fonseca-Gonçalves A, dos Santos TMP, Lopes RT, de Almeida Neves A. Mineral density changes in bovine carious dentin after treatment with bioactive dental cements: a comparative micro-CT study. Clin Oral Investig 2018; 23:1865-1870. [DOI: 10.1007/s00784-018-2644-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 09/11/2018] [Indexed: 10/28/2022]
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Meraji N, Nekoofar MH, Yazdi KA, Sharifian MR, Fakhari N, Camilleri J. Bonding to caries affected dentine. Dent Mater 2018; 34:e236-e245. [DOI: 10.1016/j.dental.2018.05.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/29/2018] [Accepted: 05/21/2018] [Indexed: 11/17/2022]
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Jardim Del Monaco R, Tavares de Oliveira M, de Lima AF, Scarparo Navarro R, Zanetti RV, de Fátima Teixeira da Silva D, Horliana ACRT. Influence of Nd:YAG laser on the penetration of a bioceramic root canal sealer into dentinal tubules: A confocal analysis. PLoS One 2018; 13:e0202295. [PMID: 30133509 PMCID: PMC6104986 DOI: 10.1371/journal.pone.0202295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/31/2018] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The aim of this in vitro study, is to evaluate the penetration of a bioceramic root canal sealer into dentinal tubules at 3 mm and 5 mm from the apex after Nd:YAG laser irradiation. METHODS Forty freshly extracted human mandibular premolars were prepared using Reciproc® and irrigated with 17% ethylenediaminetetraacetic acid (EDTA). Teeth were divided into 4 groups: group 1, obturated with control sealer (AH Plus®); group 2, obturated with bioceramic sealer (Endosequence BC Sealer®); group 3, Nd:YAG laser + control sealer (AH Plus®); and group 4, Nd:YAG laser + bioceramic sealer (Endosequence BC Sealer®). The samples were transversely sectioned 3 mm and 5 mm from the apex and examined using confocal laser scanning microscopy. Two parameters were measured: 1) sealer penetration into dentinal tubules of the root canal and 2) sealer penetration into the perimeter of the root canal walls. RESULTS Penetration analysis showed that bioceramic sealer had a higher penetration at depths of 3 and 5 mm than that of the control sealer, regardless of laser use (p <0.05). Perimeter analysis showed that there was no difference between both sealers at a depth of 3 mm (p <0.05), regardless of laser use. At a depth of 5 mm, bioceramic sealer and laser showed a greater perimeter of penetration (p <0.05) than the control sealer. CONCLUSION The use of Nd:YAG laser did not compromise the penetration of bioceramic sealer into dentinal tubules of root canals at 3 mm and 5 mm from the apex.
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Affiliation(s)
- Rodrigo Jardim Del Monaco
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, São Paulo, SP, Brazil
| | | | | | - Ricardo Scarparo Navarro
- Department of Postgraduate Program in Bioengineering and Biomedical Engineering, University Brazil, São Paulo, SP, Brazil
| | - Raquel Virgínia Zanetti
- Postgraduate Program in Prosthetic Dentistry, São Leopoldo Mandic University, Campinas, SP, Brazil
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TheraCal LC: From Biochemical and Bioactive Properties to Clinical Applications. Int J Dent 2018; 2018:3484653. [PMID: 29785184 PMCID: PMC5892295 DOI: 10.1155/2018/3484653] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/07/2018] [Accepted: 02/14/2018] [Indexed: 12/11/2022] Open
Abstract
Background Direct pulp capping is a popular treatment modality among dentists. TheraCal LC is a calcium silicate-based material that is designed as a direct/indirect pulp capping material. The material might be very attractive for clinicians because of its ease of handling. Unlike other calcium silicate-based materials, TheraCal LC is resin-based and does not require any conditioning of the dentine surface. The material can be bonded with different types of adhesives directly after application. There has been considerable research performed on this material since its launching; however, there are no review articles that collates information and data obtained from these studies. This review discusses the various characteristics of the material with the aim of establishing a better understanding for its clinical use. Methods A search was conducted using search engines (PubMed and Cochrane databases) in addition to reference mining of the articles that was used to locate other papers. The process of searching for the relevant studies was performed using the keywords pulp protection, pulp capping, TheraCal, and calcium silicates. Only articles in English published in peer-reviewed journals were included in the review. Conclusion This review underlines the fact that further in vitro and in vivo studies are required before TheraCal LC can be used as a direct pulp capping material.
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Fathy SM, Swain MV. In-vitro wear of natural tooth surface opposed with zirconia reinforced lithium silicate glass ceramic after accelerated ageing. Dent Mater 2018; 34:551-559. [DOI: 10.1016/j.dental.2017.12.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/01/2017] [Accepted: 12/21/2017] [Indexed: 10/18/2022]
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Taddei P, Prati C, Gandolfi MG. A poly(2-hydroxyethyl methacrylate)-based resin improves the dentin remineralizing ability of calcium silicates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:755-764. [PMID: 28532089 DOI: 10.1016/j.msec.2017.04.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/30/2017] [Accepted: 04/01/2017] [Indexed: 11/19/2022]
Abstract
Bioactive polymeric composites have received great attention for their capability to remineralize the dentin tissue. This study was aimed at evaluating if a poly(HEMA-co-TEGDMA) resin (HEMA: 2-hydroxyethyl methacrylate; TEGDMA: triethyleneglycol dimethacrylate) may increase the in vitro apatite forming ability of a calcium silicate cement (CaSi), in view of developing a hydrophilic light-curable composite bio-remineralizing restorative material (R-CaSi). To this purpose, the following experiments were carried out: (1) In vitro apatite forming ability of R-CaSi and CaSi was comparatively assessed by micro-Raman spectroscopy after immersion of the cement disks in Dulbecco's Phosphate Buffered Saline (DPBS) at 37°C for 1-28days; (2) Previously demineralized human dentin slices were soaked for 7days in close contact with the CaSi and R-CaSi cements as well as poly(HEMA), poly(TEGDMA) and poly(HEMA-co-TEGDMA), and then were comparatively analyzed by IR spectroscopy. Micro-Raman spectroscopy showed that in calcium phosphate nucleation tests, the B-type carbonated apatite deposit formed on R-CaSi was thicker than that on CaSi; therefore, the poly(HEMA-co-TEGDMA) resin proved able to increase the in vitro apatite forming ability of the calcium silicate-based cement. Both cements were found to induce dentin remineralization, R-CaSi to a higher extent, in agreement with the calcium phosphate nucleation tests. This result may be ascribed to the positive role played by the polymeric component, which was found to interact with collagen and to chelate calcium ions. Upon remineralization, collagen underwent conformational rearrangements and the formed apatite phase, rather than a simple deposit, was intimately bound to the collagen matrix, thanks to the calcium ions chelated by it.
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Affiliation(s)
- Paola Taddei
- Department of Biomedical and Neuromotor Sciences, Biochemistry Unit, University of Bologna, Via Belmeloro 8/2, 40126 Bologna, Italy.
| | - Carlo Prati
- Endodontic Clinical Section, Unit of Odontostomatological Sciences, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
| | - Maria Giovanna Gandolfi
- Laboratory of Biomaterials and Oral Pathology, Unit of Odontostomatological Sciences, Department of Biomedical and Neuromotor Sciences, University of Bologna, Via San Vitale 59, 40125 Bologna, Italy
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