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Kuru E, Eronat N, Türkün M, Çoğulu D. Comparison of remineralization ability of tricalcium silicate and of glass ionomer cement on residual dentin: an in vitro study. BMC Oral Health 2024; 24:732. [PMID: 38926776 PMCID: PMC11202387 DOI: 10.1186/s12903-024-04475-4] [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: 03/05/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
OBJECTIVE This study aimed to compare the remineralization effects of a calcium silicate-based cement (Biodentine) and of a glass ionomer cement (GIC: Fuji IX) on artificially demineralized dentin. METHODS Four standard cavities were prepared in dentin discs prepared from 34 extracted sound human third molars. In each disc, one cavity was covered with an acid-resistant varnish before demineralization (Group 1). The specimens were soaked in a chemical demineralization solution for 96 h to induce artificial carious lesions. Thereafter, one cavity each was filled with Biodentine (Group 2) and GIC (Group 3), respectively, and one carious lesion was left unrestored as a negative control (Group 4). Next, specimens were immersed in simulated body fluid (SBF) for 21 days. After cross-sectioning the specimens, the Ca/P ratio was calculated in each specimen by using scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX). Finally, data were analyzed using repeated-measures ANOVA with post-hoc Bonferroni correction. RESULTS Both cement types induced dentin remineralization as compared to Group 4. The Ca/P ratio was significantly higher in Group 2 than in Group 3 (p < 0.05). CONCLUSION The dentin lesion remineralization capability of Biodentine is higher than that of GIC, suggesting the usefulness of the former as a bioactive dentin replacement material. CLINICAL RELEVANCE Biodentine has a higher remineralization ability than that of GIC for carious dentin, and its interfacial properties make it a promising bioactive dentin restorative material.
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Affiliation(s)
- Elif Kuru
- Department of Pediatric Dentistry, Usak University School of Dentistry, Cumhuriyet, Merkez/Usak, 64200, Turkey.
| | - Nesrin Eronat
- Department of Pediatric Dentistry, Ege University School of Dentistry, Erzene, Bornova/İzmir, 35040, Turkey
| | - Murat Türkün
- Department of Restorative Dentistry, Ege University School of Dentistry, Erzene, Bornova / İzmir, 35040, Turkey
| | - Dilşah Çoğulu
- Department of Pediatric Dentistry, Ege University School of Dentistry, Erzene, Bornova/İzmir, 35040, Turkey
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Vilela HS, Resende MCA, Trinca RB, Scaramucci T, Sakae LO, Braga RR. Glass ionomer cement with calcium-releasing particles: Effect on dentin mineral content and mechanical properties. Dent Mater 2024; 40:236-243. [PMID: 37981512 DOI: 10.1016/j.dental.2023.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/25/2023] [Accepted: 11/04/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVE to evaluate the effect a glass ionomer cement (GIC) containing hydroxyapatite (HAp) or calcium silicate (CaSi) particles on mineral content and mechanical properties of demineralized dentin. Ion release and compressive strength (CS) of the cements were also evaluated. METHODS GIC (Fuji 9 Gold Label, GC), GIC+ 5%HAp and GIC+ 5%CaSi (by mass) were evaluated. Ion release was determined by induced coupled plasma optical emission spectroscopy (Ca2+/Sr2+) or ion-specific electrode (F-) (n = 3). A composite (Filtek Z250, 3 M ESPE) was used as control in remineralization tests. Demineralized dentin discs were kept in contact with materials in simulated body fluid (SBF) at 37 °C for eight weeks. Mineral:matrix ratio (MMR) was determined by ATR-FTIR spectroscopy (n = 5). Dentin hardness (H) and elastic modulus (E) were determined by nanoindentation (n = 10). CS was tested after 24 h and 7d in deionized water (n = 12). Data were analyzed by ANOVA/Tukey test (α = 0.05). RESULTS Ca2+ and Sr2+ release was higher for the modified materials (p < 0.05). Only GIC+ 5%HAp showed higher F- release than the control (p < 0.05). All groups showed statistically significant increases in MMR, with no differences among them after 8 weeks (p > 0.05). No differences in dentin H or E were observed among groups (p > 0.05). HAp-modified GIC showed increased initial CS, while adding CaSi had the opposite effect (p < 0.05). After 7 days, GIC+ 5%CaSi presented lower CS in relation to control and GIC+ 5%HAp (p < 0.05). SIGNIFICANCE GIC modification with HAp or CaSi affected CS and increased ion release; however, none of the groups showed evidence of dentin remineralization in comparison to the negative control.
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Affiliation(s)
- Handially S Vilela
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Mariana C A Resende
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Rafael B Trinca
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Taís Scaramucci
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Leticia O Sakae
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Roberto R Braga
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil.
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Vilela HS, Trinca RB, Alves TVM, Scaramucci T, Sakae LO, Mariano FS, Giannini M, Silva FRO, Braga RR. Effect of a calcium silicate cement and experimental glass ionomer cements containing calcium orthophosphate particles on demineralized dentin. Clin Oral Investig 2024; 28:97. [PMID: 38225525 DOI: 10.1007/s00784-024-05489-6] [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: 10/26/2023] [Accepted: 01/03/2024] [Indexed: 01/17/2024]
Abstract
OBJECTIVE The study aims to evaluate the effect of a glass ionomer cement (GIC; Fuji 9 Gold Label, GC) with added calcium orthophosphate particles and a calcium silicate cement (CSC; Biodentine, Septodont) regarding ion release, degradation in water, mineral content, and mechanical properties of demineralized dentin samples. METHODS GIC, GIC + 5% DCPD (dicalcium phosphate dihydrate), GIC + 15% DCPD, GIC + 5% β-TCP (tricalcium phosphate), GIC + 15% β-TCP (by mass), and CSC were evaluated for Ca2+/Sr2+/F- release in water for 56 days. Cement mass loss was evaluated after 7-day immersion in water. Partially demineralized dentin disks were kept in contact with materials while immersed in simulated body fluid (SBF) at 37 °C for 56 days. The "mineral-to-matrix ratio" (MMR) was determined by ATR-FTIR spectroscopy. Dentin hardness and elastic modulus were obtained by nanoindentation. Samples were observed under scanning and transmission electron microscopy. Data were analyzed by ANOVA/Tukey test (α = 0.05). RESULTS Ca2+ release from CSC and GIC (μg/cm2) were 4737.0 ± 735.9 and 13.6 ± 1.6, respectively. In relation to the unmodified GIC, the addition of DCPD or β-TCP increased ion release (p < 0.001). Only the dentin disks in contact with CSC presented higher MMR (p < 0.05) and mechanical properties than those restored with a resin composite used as control (p < 0.05). Mass loss was similar for GIC and CSC; however, the addition of DCPD or β-TCP increased GIC degradation (p < 0.05). CONCLUSION Despite the increase in ion release, the additional Ca2+ sources did not impart remineralizing capability to GIC. Both unmodified GIC and CSC showed similar degradation in water. CLINICAL RELEVANCE CSC was able to promote dentin remineralization.
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Affiliation(s)
- Handially S Vilela
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
| | - Rafael B Trinca
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
| | - Tarsila V M Alves
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil
| | - Tais Scaramucci
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Leticia O Sakae
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Flávia S Mariano
- Department of Restorative Dentistry, School of Dentistry, University of Campinas, São Paulo, Brazil
| | - Marcelo Giannini
- Department of Restorative Dentistry, School of Dentistry, University of Campinas, São Paulo, Brazil
| | - Flávia R O Silva
- Institute of Energy and Nuclear Research, University of São Paulo, São Paulo, Brazil
| | - Roberto R Braga
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP, 05508-000, Brazil.
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Hegde KR, Ray K, Szmacinski H, Sorto S, Puche AC, Lengyel I, Thompson RB. Two-Photon Excited Fluorescence Lifetime Imaging of Tetracycline-Labeled Retinal Calcification. SENSORS (BASEL, SWITZERLAND) 2023; 23:6626. [PMID: 37514920 PMCID: PMC10386431 DOI: 10.3390/s23146626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/14/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023]
Abstract
Deposition of calcium-containing minerals such as hydroxyapatite and whitlockite in the subretinal pigment epithelial (sub-RPE) space of the retina is linked to the development of and progression to the end-stage of age-related macular degeneration (AMD). AMD is the most common eye disease causing blindness amongst the elderly in developed countries; early diagnosis is desirable, particularly to begin treatment where available. Calcification in the sub-RPE space is also directly linked to other diseases such as Pseudoxanthoma elasticum (PXE). We found that these mineral deposits could be imaged by fluorescence using tetracycline antibiotics as specific stains. Binding of tetracyclines to the minerals was accompanied by increases in fluorescence intensity and fluorescence lifetime. The lifetimes for tetracyclines differed substantially from the known background lifetime of the existing natural retinal fluorophores, suggesting that calcification could be visualized by lifetime imaging. However, the excitation wavelengths used to excite these lifetime changes were generally shorter than those approved for retinal imaging. Here, we show that tetracycline-stained drusen in post mortem human retinas may be imaged by fluorescence lifetime contrast using multiphoton (infrared) excitation. For this pilot study, ten eyes from six anonymous deceased donors (3 female, 3 male, mean age 83.7 years, range 79-97 years) were obtained with informed consent from the Maryland State Anatomy Board with ethical oversight and approval by the Institutional Review Board.
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Affiliation(s)
- Kavita R Hegde
- Department of Natural Sciences, Coppin State University, Baltimore, MD 21216, USA
| | - Krishanu Ray
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Henryk Szmacinski
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Sharon Sorto
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Adam C Puche
- Department of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Imre Lengyel
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Richard B Thompson
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Pires PM, Rosa TDC, Ribeiro-Lages MB, Duarte ML, Cople Maia L, Neves ADA, Sauro S. Bioactive Restorative Materials Applied over Coronal Dentine-A Bibliometric and Critical Review. Bioengineering (Basel) 2023; 10:731. [PMID: 37370661 DOI: 10.3390/bioengineering10060731] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
The objective of the research was to examine the scientific literature concerning restorative materials with bioactive properties for the purpose of covering dentin. Searches were performed in various databases including MEDLINE, Scopus, Web of Science, Cochrane Library, Lilacs/BBO, and Embase. Inclusion criteria involved studies that utilized the terms "dentin" and "bioactive", along with "ion-releasing", "smart materials", "biomimetic materials" and "smart replacement for dentin". The information extracted included the title, authors, publication year, journal and the country of affiliation of the corresponding author. The studies were categorized based on their study design, type of material, substrate, analytical method, and bioactivity. A total of 7161 records were recovered and 159 were included for data extraction. Most of the publications were in vitro studies (n = 149), testing different types of materials in sound dentine (n = 115). Most studies were published in Dental Materials (n = 29), and an increase in publications could be observed after the year 2000. Most of the articles were from the USA (n = 34), followed by Brazil (n = 28). Interfacial analysis was the most investigated (n = 105), followed by bond strength (n = 86). Bioactivity potential was demonstrated for most tested materials (n = 148). This review presents insights into the current trends of bioactive materials development, clearly showing a severe lack of clinical studies.
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Affiliation(s)
- Paula Maciel Pires
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
- Dental Biomaterials & Minimally Invasive Dentistry, Departamento de Odontologia, CEU Cardenal Herrera University, 46115 Valencia, Spain
| | - Thamirys da Costa Rosa
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Mariana Batista Ribeiro-Lages
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Maysa Lannes Duarte
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Salvatore Sauro
- Dental Biomaterials & Minimally Invasive Dentistry, Departamento de Odontologia, CEU Cardenal Herrera University, 46115 Valencia, Spain
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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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Sajini SI, Alshawi BA, Alharbi LM. Assessment of remineralisation potentials of bioactive dental composite using an in-vitro demineralised dentine model. J Taibah Univ Med Sci 2022; 17:640-647. [PMID: 35983447 PMCID: PMC9356364 DOI: 10.1016/j.jtumed.2021.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/20/2021] [Accepted: 12/01/2021] [Indexed: 11/22/2022] Open
Abstract
Objective Minimally invasive dentistry encourages conservative caries excavation and remineralisation of the remaining dental tissues. However, dentine remineralisation is more difficult than enamel remineralisation due to the differences in their composition. This study aims to assess the remineralisation potential of Activa BioActive-Restorative and Beautifil II restoration on demineralised dentine samples, and compares it with glass-ionomer (GIC) restoration using energy dispersive X-ray (EDX) and Knoop hardness number (KHN). Methods Non-carious extracted molar teeth were used, a total number of ten teeth were sectioned into halves and partially demineralised using 37.0% phosphoric acid for 60 s. All samples are assessed using EDX and KHN prior to restorations. The samples are then subdivided into four groups (n = 5). Group 1 was restored with Activa BioActive-Restorative, Group 2 received Beautifil II, Group 3 was restored with GIC, and the last group was used as a negative control. After storage, the samples were analysed using EDX and KHN. Results The demineralisation protocol with 37.0% phosphoric acid significantly decreased the calcium:phosphate (Ca:P) ratio and KHN. Remineralisation occurred in all groups, but the highest percentage change in Ca:P ratio and KHN was observed in the Activa BioActive-Restorative group (20.7%, 82.0%, respectively), followed by the Beautifil II group, glass ionomer group, and the control group, in that order. Conclusion Activa BioActive-Restorative restoration presents superior remineralisation compared to Beautifil II and glass-ionomer dental restorations.
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Affiliation(s)
- Shara I. Sajini
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, KSA
- Corresponding address: Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, P.O.Box 80209, Jeddah, 21589, KSA.
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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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Atmeh AR. Investigating the effect of bicarbonate ion on the structure and strength of calcium silicate-based dental restorative material—Biodentine. Clin Oral Investig 2020; 24:4597-4606. [DOI: 10.1007/s00784-020-03328-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/05/2020] [Indexed: 11/28/2022]
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Chapman NR, Jones SB, Bahal P, He T, Drake P, Zou Y, West NX. The ability of a potassium oxalate gel strip to occlude human dentine tubules; a Novel in vitro: In situ Study. J Dent 2020; 100:103437. [PMID: 32736082 DOI: 10.1016/j.jdent.2020.103437] [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: 06/10/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES To determine if an oxalate strip reduced fluid flow in dentine samples and whether this reduction was maintained following a 14 day intra-oral period. METHODS Dentine tubule fluid flow was measured by a modified Pashley cell in 40 acid-etched dentine discs 1 mm thick, diameter >10 mm, with an acquired pellicle, pre-equilibrated with Hartmann's solution and conditioned by toothbrushing, pre and post treatment (10 min) with an oxalate (3.14 %) gel strip or no treatment. One control and one test sample were exposed in-situ for 14 days to the oral environment in 20 healthy adult volunteers, and fluid flow re-measured. The appliance containing the two samples was removed for brushing with water after mealtimes when the participant brushed their teeth and for a 2 min daily soak in chlorhexidine. RESULTS Fluid flow rate was reduced significantly immediately following treatment with the oxalate strip compared to baseline flow rate by 58 %. Following 14 days in-situ oral environment phase, a significant further reduction in fluid flow compared to baseline was identified in both control and oxalate strip treated samples, both (p < 0.0001), but the reduction was greater in the test samples, 94 % vs 87 %, p < 0.01. CONCLUSIONS This novel investigation is the first to show fluid flow measurement using the Pashley model in dentine samples that have been housed in the mouth for 14 days. Treatment with an oxalate strip designed for dentine hypersensitivity alleviation reduced dentine fluid flow more than control providing evidence that the oxalate treatment withstood the oral environment over a prolonged time. CLINICAL SIGNIFICANCE This study demonstrated the efficacy and durability of the oxalate precipitate over a 14 day period in achieving and maintaining dentine tubule occlusion when participants had no dietary restrictions. This demonstrates the suitability of the oxalate strip for the treatment of patients suffering from dentine hypersensitivity pain.
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Affiliation(s)
- Nicholas R Chapman
- Clinical Trials Unit, Bristol Dental Hospital, Lower Maudlin Street, Bristol, BS1 2LY, United Kingdom.
| | - Siân Bodfel Jones
- Clinical Trials Unit, Bristol Dental Hospital, Lower Maudlin Street, Bristol, BS1 2LY, United Kingdom.
| | - Priya Bahal
- Clinical Trials Unit, Bristol Dental Hospital, Lower Maudlin Street, Bristol, BS1 2LY, United Kingdom.
| | - Tao He
- Procter & Gamble, Mason, Ohio, USA.
| | | | | | - Nicola X West
- Clinical Trials Unit, Bristol Dental Hospital, Lower Maudlin Street, Bristol, BS1 2LY, United Kingdom.
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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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13
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Karadas M, Atıcı MG. Bond strength and adaptation of pulp capping materials to dentin. Microsc Res Tech 2020; 83:514-522. [DOI: 10.1002/jemt.23440] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/17/2019] [Accepted: 12/27/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Muhammet Karadas
- Department of Restorative Dentistry, Faculty of DentistryRecep Tayyip Erdogan University Rize Turkey
| | - Makbule Gamze Atıcı
- Department of Restorative Dentistry, Faculty of DentistryRecep Tayyip Erdogan University Rize Turkey
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14
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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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15
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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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16
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Rajasekharan S, Martens LC, Cauwels RGEC, Anthonappa RP. Biodentine™ material characteristics and clinical applications: a 3 year literature review and update. Eur Arch Paediatr Dent 2018; 19:1-22. [PMID: 29372451 DOI: 10.1007/s40368-018-0328-x] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 01/11/2018] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Biodentine™ has frequently been acknowledged in the literature as a promising material and serves as an important representative of tricalcium silicate based cements used in dentistry. AIM To provide an update on the physical and biological properties of Biodentine™ and to compare these properties with those of other tricalcium silicate cements namely, different variants of mineral trioxide aggregate (MTA) such as ProRoot MTA, MTA Angelus, Micro Mega MTA (MM-MTA), Retro MTA, Ortho MTA, MTA Plus, GCMTA, MTA HP and calcium enriched mixture (CEM), Endosequence and Bioaggregate™. STUDY DESIGN A comprehensive literature search for publications from November 20, 2013 to November 20, 2016 was performed by two independent reviewers on Medline (PubMed), Embase, Web of Science, CENTRAL (Cochrane), SIGLE, SciELO, Scopus, Lilacs and clinicaltrials.gov. Electronic and hand search was carried out to identify randomised control trials (RCTs), case control studies, case series, case reports, as well as in vitro and animal studies published in the English language. CONCLUSIONS The enhanced physical and biologic properties of Biodentine™ could be attributed to the presence of finer particle size, use of zirconium oxide as radiopacifier, purity of tricalcium silicate, absence of dicalcium silicate, and the addition of calcium chloride and hydrosoluble polymer. Furthermore, as Biodentine™ overcomes the major drawbacks of MTA it has great potential to revolutionise the different treatment modalities in paediatric dentistry and endodontics especially after traumatic injuries. Nevertheless, high quality long-term clinical studies are required to facilitate definitive conclusions.
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Affiliation(s)
- S Rajasekharan
- Department of Paediatric Dentistry and special care, PAECOMEDIS Research Cluster, Ghent University, 9000, Ghent, Belgium.
| | - L C Martens
- Department of Paediatric Dentistry and special care, PAECOMEDIS Research Cluster, Ghent University, 9000, Ghent, Belgium
| | - R G E C Cauwels
- Department of Paediatric Dentistry and special care, PAECOMEDIS Research Cluster, Ghent University, 9000, Ghent, Belgium
| | - R P Anthonappa
- Paediatric Oral Health Research Group, School of Dentistry, The University of Western Australia, Perth, Australia
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Meraji N, Camilleri J. Bonding over Dentin Replacement Materials. J Endod 2017; 43:1343-1349. [DOI: 10.1016/j.joen.2017.03.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/12/2017] [Accepted: 03/17/2017] [Indexed: 10/19/2022]
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Re-mineralizing dentin using an experimental tricalcium silicate cement with biomimetic analogs. Dent Mater 2017; 33:505-513. [DOI: 10.1016/j.dental.2017.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/15/2017] [Accepted: 02/16/2017] [Indexed: 02/04/2023]
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19
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How effectively do hydraulic calcium-silicate cements re-mineralize demineralized dentin. Dent Mater 2017; 33:434-445. [DOI: 10.1016/j.dental.2017.01.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 01/04/2017] [Accepted: 01/31/2017] [Indexed: 11/22/2022]
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