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Li J, Han Q, Zhang L, Zhang J, Yin W, Zhong Y. Efficacy of a novel dentifrice containing bioactive glass-ceramic for dentinal hypersensitivity: A double-blind randomized controlled trial in Chinese adults. J Dent 2024; 144:104898. [PMID: 38402943 DOI: 10.1016/j.jdent.2024.104898] [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: 11/23/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 02/27/2024] Open
Abstract
OBJECTIVE To assess the efficacy and safety of a toothpaste containing 7.5 % HX-BGC in combating dentinal hypersensitivity. METHODS A single-center, randomized, double-blind, three-group parallel-controlled design was employed, with Schiff Index and Yeaple Index as measurement indicators. The study evaluated the effectiveness of HX-BGC toothpaste, NovaMin toothpaste, and a negative control toothpaste without desensitizing agents. Eligible subjects underwent baseline examination after a 2-week washout period, and those meeting inclusion criteria and not meeting exclusion criteria entered the study. Participants were randomly assigned to use one of the three toothpastes. Follow-up examinations were conducted immediately after a single use and at 2, 4, and 6 weeks. Intra-group and inter-group comparisons were made for Schiff and Yeaple indices. Safety of the experimental toothpastes was assessed through participant feedbacks and oral soft tissue examinations. RESULTS Subjects in the three groups were balanced in terms of age and gender distribution, with no baseline differences in indicators. Immediately after a single application of toothpaste, Yeaple indices increased, and Schiff indices decreased, with no significant differences among the groups. After 2 weeks of continuous use, Yeaple indices increased in all groups, with significant differences observed between the HX-BGC group and the other two groups. Schiff indices decreased in all groups, with the NovaMin group showing significant differences compared to the negative control group. At weeks 4 and 6, both indices in the HX-BGC group and the NovaMin group were significantly better than those in the negative control group, with the HX-BGC group outperforming the NovaMin group in the Yeaple index. No serious adverse reactions related to the study products were observed or reported by any participants. CLINICAL SIGNIFICANCE This clinical trial confirmed the efficacy of HX-BGC in anti-dentinal hypersensitivity and supported the clinical application of the dentifrice containing HX-BGC. CONCLUSION Compared to the negative control group, both HX-BGC and NovaMin toothpaste groups demonstrated more significant effects in combating dentinal hypersensitivity. No adverse reactions related to the experimental toothpastes were observed.
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Affiliation(s)
- Jia Li
- Clinical Research Department, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China
| | - Qi Han
- Clinical Research Department, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China
| | - Li Zhang
- Department of General Dentistry, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China
| | - Jing Zhang
- Department of General Dentistry, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China
| | - Wei Yin
- Department of General Dentistry, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China
| | - Yisi Zhong
- Department of General Dentistry, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd Section, Renmin South Road, Chengdu, Sichuan 610041, China.
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Kavoor S, Ranjini MA, Aziz NA, Ashok HK, Nadig RR. In vitro evaluation of the effect of addition of biomaterials to carbamide peroxide on the bleaching efficacy and microhardness of enamel. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:310-314. [PMID: 38634034 PMCID: PMC11019809 DOI: 10.4103/jcde.jcde_310_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/19/2024] [Accepted: 02/12/2024] [Indexed: 04/19/2024]
Abstract
Background and Aim Teeth bleaching, although considered safe and conservative, cause microscopic changes in the tooth structure. The aim of this study is to evaluate the bleaching efficacy of carbamide peroxide (CP) bleaching gel when modified with the incorporation of bioactive glass (BG) and hydroxyapatite (HA) and its effect on enamel microhardness. Materials and Methods Forty-five maxillary incisors were decoronated, artificially stained and mounted in acrylic. The samples were divided into three groups of 15 each and subjected to the following bleaching protocol for 8 h/day at 37°C for 2 weeks: Group 1 - 16% CP, Group 2 - CP modified with BG, and Group 3 - CP modified with hydroxyapatite (HA). Spectrophotometric color assessment using CIE L*a*b* system and Vickers microhardness were assessed before and after bleaching. Data were analyzed using Student's paired t-test and one-way ANOVA followed by Tukey's post hoc analysis. Results There was a significant change in color (L*a*b*) in all the three groups when compared to the baseline values. However, no significant difference in the total color change (ΔE) was observed between the three groups. Enamel microhardness reduced significantly in the CP group, whereas it increased in the BG and HA group after bleaching. Scanning electron microscopy images of BG and HA groups showed crystalline deposits suggesting mineral deposition. Conclusion Addition of biomaterials can be a beneficial alternative to bleaching with CP alone, considering the increase in microhardness without hindering the bleaching action.
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Affiliation(s)
- Sowmya Kavoor
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences, Bengaluru, Karnataka, India
| | - M. A. Ranjini
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences, Bengaluru, Karnataka, India
| | - Naval Abdul Aziz
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences, Bengaluru, Karnataka, India
| | - H. K. Ashok
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences, Bengaluru, Karnataka, India
| | - Roopa R. Nadig
- Department of Conservative Dentistry and Endodontics, Dayananda Sagar College of Dental Sciences, Bengaluru, Karnataka, India
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Xie Y, Chen R, Yao W, Ma L, Li B. Synergistic effect of ion-releasing fillers on the remineralization and mechanical properties of resin-dentin bonding interfaces. Biomed Phys Eng Express 2023; 9:062001. [PMID: 37832527 DOI: 10.1088/2057-1976/ad0300] [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: 07/17/2023] [Accepted: 10/13/2023] [Indexed: 10/15/2023]
Abstract
In modern restorative dentistry, adhesive resin materials are vital for achieving minimally invasive, esthetic, and tooth-preserving restorations. However, exposed collagen fibers are found in the hybrid layer of the resin-dentin bonding interface due to incomplete resin penetration. As a result, the hybrid layer is susceptible to attack by internal and external factors such as hydrolysis and enzymatic degradation, and the durability of dentin bonding remains limited. Therefore, efforts have been made to improve the stability of the resin-dentin interface and achieve long-term clinical success. New ion-releasing adhesive resin materials are synthesized by introducing remineralizing ions such as calcium and phosphorus, which continuously release mineral ions into the bonding interface in resin-bonded restorations to achieve dentin biomimetic remineralization and improve bond durability. As an adhesive resin material capable of biomimetic mineralization, maintaining excellent bond strength and restoring the mechanical properties of demineralized dentin is the key to its function. This paper reviews whether ion-releasing dental adhesive materials can maintain the mechanical properties of the resin-dentin bonding interface by supplementing the various active ingredients required for dentin remineralization from three aspects: phosphate, silicate, and bioactive glass.
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Affiliation(s)
- Yimeng Xie
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Ruhua Chen
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Wei Yao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Liang Ma
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
| | - Bing Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, People's Republic of China
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Song X, Segura-Egea JJ, Díaz-Cuenca A. Sol-Gel Technologies to Obtain Advanced Bioceramics for Dental Therapeutics. Molecules 2023; 28:6967. [PMID: 37836810 PMCID: PMC10574775 DOI: 10.3390/molecules28196967] [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: 08/24/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
The aim of this work is to review the application of bioceramic materials in the context of current regenerative dentistry therapies, focusing on the latest advances in the synthesis of advanced materials using the sol-gel methodology. Chemical synthesis, processing and therapeutic possibilities are discussed in a structured way, according to the three main types of ceramic materials used in regenerative dentistry: bioactive glasses and glass ceramics, calcium phosphates and calcium silicates. The morphology and chemical composition of these bioceramics play a crucial role in their biological properties and effectiveness in dental therapeutics. The goal is to understand their chemical, surface, mechanical and biological properties better and develop strategies to control their pore structure, shape, size and compositions. Over the past decades, bioceramic materials have provided excellent results in a wide variety of clinical applications related to hard tissue repair and regeneration. Characteristics, such as their similarity to the chemical composition of the mineral phase of bones and teeth, as well as the possibilities offered by the advances in nanotechnology, are driving the development of new biomimetic materials that are required in regenerative dentistry. The sol-gel technique is a method for producing synthetic bioceramics with high purity and homogeneity at the molecular scale and to control the surfaces, interfaces and porosity at the nanometric scale. The intrinsic nanoporosity of materials produced by the sol-gel technique correlates with the high specific surface area, reactivity and bioactivity of advanced bioceramics.
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Affiliation(s)
- Xiaozhe Song
- Materials Science Institute of Seville (ICMS), Joint CSIC-University of Seville Center, 41092 Sevilla, Spain;
| | - Juan J. Segura-Egea
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41009 Seville, Spain;
| | - Aránzazu Díaz-Cuenca
- Materials Science Institute of Seville (ICMS), Joint CSIC-University of Seville Center, 41092 Sevilla, Spain;
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Simila HO, Boccaccini AR. Sol-gel synthesis of lithium doped mesoporous bioactive glass nanoparticles and tricalcium silicate for restorative dentistry: Comparative investigation of physico-chemical structure, antibacterial susceptibility and biocompatibility. Front Bioeng Biotechnol 2023; 11:1065597. [PMID: 37077228 PMCID: PMC10106781 DOI: 10.3389/fbioe.2023.1065597] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 03/14/2023] [Indexed: 04/05/2023] Open
Abstract
Introduction: The sol-gel method for production of mesoporous bioactive glass nanoparticles (MBGNs) has been adapted to synthesize tricalcium silicate (TCS) particles which, when formulated with other additives, form the gold standard for dentine-pulp complex regeneration. Comparison of TCS and MBGNs obtained by sol-gel method is critical considering the results of the first ever clinical trials of sol-gel BAG as pulpotomy materials in children. Moreover, although lithium (Li) based glass ceramics have been long used as dental prostheses materials, doping of Li ion into MBGNs for targeted dental applications is yet to be investigated. The fact that lithium chloride benefits pulp regeneration in vitro also makes this a worthwhile undertaking. Therefore, this study aimed to synthesize TCS and MBGNs doped with Li by sol-gel method, and perform comparative characterizations of the obtained particles.Methods: TCS particles and MBGNs containing 0%, 5%, 10% and 20% Li were synthesized and particle morphology and chemical structure determined. Powder concentrations of 15mg/10 mL were incubated in artificial saliva (AS), Hank’s balanced saline solution (HBSS) and simulated body fluid (SBF), at 37°C for 28 days and pH evolution and apatite formation, monitored. Bactericidal effects against S. aureus and E. coli, as well as possible cytotoxicity against MG63 cells were also evaluated through turbidity measurements.Results: MBGNs were confirmed to be mesoporous spheres ranging in size from 123 nm to 194 nm, while TCS formed irregular nano-structured agglomerates whose size was generally larger and variable. From ICP-OES data, extremely low Li ion incorporation into MBGNs was detected. All particles had an alkalinizing effect on all immersion media, but TCS elevated pH the most. SBF resulted in apatite formation for all particle types as early as 3 days, but TCS appears to be the only particle to form apatite in AS at a similar period. Although all particles had an effect on both bacteria, this was pronounced for undoped MBGNs. Whereas all particles are biocompatible, MBGNs showed better antimicrobial properties while TCS particles were associated with greater bioactivity.Conclusion: Synergizing these effects in dental biomaterials may be a worthwhile undertaking and realistic data on bioactive compounds targeting dental application may be obtained by varying the immersion media.
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Wang Q, Luan J, Zhao Z, Kong W, Zhang C, Ding J. Dentin-desensitizing biomaterials. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Occlusion effects of bioactive glass and hydroxyapatite on dentinal tubules: a systematic review. Clin Oral Investig 2022; 26:6061-6078. [DOI: 10.1007/s00784-022-04639-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 07/12/2022] [Indexed: 11/03/2022]
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de Freitas SAA, Ferreira PVC, Carvalho EM, Aldaz MAN, Loguercio AD, Grazziotin-Soares R, Carvalho CN, Pereira ADFV, Bauer J. Experimental pastes containing niobophosphate and 45S5 bioactive glasses for treatment of dentin hypersensitivity: dentin permeability and tubule obliteration. Clin Oral Investig 2022; 26:6397-6407. [PMID: 35767044 DOI: 10.1007/s00784-022-04595-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/21/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This study tested the ability of bioactive pastes containing niobophosphate and 45S5 glasses to reduce dentin permeability and to obliterate dentinal tubules, as a mean of reducing human dentin hypersensitivity. MATERIALS AND METHODS Experimental pastes with concentrations of 10, 20, and 30 wt% of two bioactive glasses (45S5 or niobophosphate [NbG]) were formulated. A paste without bioactive glass (placebo) and a commercial paste (Nano P, FGM) were used as controls. Forty dentin disc specimens were obtained from caries-free extracted third human molars and divided in 8 groups (n = 5). Percentage of permeability (%Lp) was assessed in a dental permeability machine considering hydraulic conductance, immediately after pastes application and at day 7, day 14, and day 21. The precipitates formed on the surface of the dentin discs (and dentinal tubules) were analyzed by SEM/EDS and micro-Raman spectra. Data of dentin permeability (%) 2-way repeated-measures (ANOVA) and Holm-Sidak post-tests (α = 0.05). Dentinal tubule obliteration was visually (and elemental) evaluated and descriptively reported. RESULTS The experimental bioactive glass pastes containing NbG and 45S5, regardless of the concentration, reduced dentin permeability in comparison with pastes without bioactive glasses (P < 0.05). The formulated placebo and commercial paste did not reduce permeability over time (P < 0.05). SEM/EDS and micro-Raman analyses showed that both type of bioactive pastes (NbG or 45S5-based) presented mineral precipitates obliterating the dentinal tubules at day 21. NbG seems to offer a better initial effect than 45S5, while at 21 days there is no difference between both glasses. CONCLUSION Experimental bioactive pastes containing NbG and 45S5 (at concentrations of 10%, 20%, or 30%) have potential to reduce dentin permeability (over time) in comparison with pastes without bioactive glasses; and this occurs on behalf of obliteration of dentinal tubules by microparticle and precipitate formation. CLINICAL RELEVANCE Bioactive pastes containing NbG and 45S5 may benefit patients presenting dentin hypersensitivity, because these pastes can start acting fast after application and maintain their action up to 21 days.
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Affiliation(s)
- Samantha Ariadne Alves de Freitas
- Dentistry Biomaterials Laboratory (Biomma), School of Dentistry, Federal University of Maranhão (UFMA), Av. dos Portugueses, 1966, São Luís, Maranhão, 65080-805, Brazil
| | - Paulo Vitor Campos Ferreira
- Department of Restorative Dentistry, Dental Materials Division, School of Dentistry, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, São Paulo, 13414-903, Brazil
| | - Edilausson Moreno Carvalho
- University Ceuma (UNICEUMA), School of Dentistry, R. Josué Montello, 1, Renascença II, São Luis, , MA, 65075-120, Brazil
| | - Mayra Alejandra Nuñez Aldaz
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa (UEPG), Rua Carlos Cavalcanti, 4748, Campus Uvaranas, Ponta GrossaParaná, 84030-900, Brazil
| | - Alessandro Dourado Loguercio
- Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa (UEPG), Rua Carlos Cavalcanti, 4748, Campus Uvaranas, Ponta GrossaParaná, 84030-900, Brazil
| | - Renata Grazziotin-Soares
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, Saskatchewan, S7N 5E4, Canada
| | - Ceci Nunes Carvalho
- University Ceuma (UNICEUMA), School of Dentistry, R. Josué Montello, 1, Renascença II, São Luis, , MA, 65075-120, Brazil
| | - Adriana de Fátima Vasconcelos Pereira
- Dentistry Biomaterials Laboratory (Biomma), School of Dentistry, Federal University of Maranhão (UFMA), Av. dos Portugueses, 1966, São Luís, Maranhão, 65080-805, Brazil
| | - José Bauer
- Dentistry Biomaterials Laboratory (Biomma), School of Dentistry, Federal University of Maranhão (UFMA), Av. dos Portugueses, 1966, São Luís, Maranhão, 65080-805, Brazil.
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House KL, Pan L, O'Carroll DM, Xu S. Applications of scanning electron microscopy and focused ion beam milling in dental research. Eur J Oral Sci 2022; 130:e12853. [PMID: 35288994 DOI: 10.1111/eos.12853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 01/06/2022] [Indexed: 12/15/2022]
Abstract
The abilities of scanning electron microscopy (SEM) and focused ion beam (FIB) milling for obtaining high-resolution images from top surfaces, cross-sectional surfaces, and even in three dimensions, are becoming increasingly important for imaging and analyzing tooth structures such as enamel and dentin. FIB was originally developed for material research in the semiconductor industry. However, use of SEM/FIB has been growing recently in dental research due to the versatility of dual platform instruments that can be used as a milling device to obtain low-artifact cross-sections of samples combined with high-resolution images. The advent of the SEM/FIB system and accessories may offer access to previously inaccessible length scales for characterizing tooth structures for dental research, opening exciting opportunities to address many central questions in dental research. New discoveries and fundamental breakthroughs in understanding are likely to follow. This review covers the applications, key findings, and future direction of SEM/FIB in dental research in morphology imaging, specimen preparation for transmission electron microscopy (TEM) analysis, and three-dimensional volume imaging using SEM/FIB tomography.
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Affiliation(s)
- Krystal L House
- Colgate Palmolive Company, Piscataway, New Jersey, USA.,Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, USA
| | - Long Pan
- Colgate Palmolive Company, Piscataway, New Jersey, USA
| | - Deirdre M O'Carroll
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, USA.,Department of Materials Science and Engineering, Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey, USA
| | - Shiyou Xu
- Colgate Palmolive Company, Piscataway, New Jersey, USA
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Sol-gel bioactive glass containing biomaterials for restorative dentistry: A review. Dent Mater 2022; 38:725-747. [PMID: 35300871 DOI: 10.1016/j.dental.2022.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/11/2022] [Accepted: 02/21/2022] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Bioactive glasses (BAGs) have been researched extensively for dentistry due to their favourable biocompatibility and hard tissue bonding ability. However, the specific application of BAGs produced through sol-gel synthesis in restorative dentistry has not been reviewed previously. This review provides a comprehensive account of the principles behind sol-gel derived BAGs and their investigation for dental tissue restoration materials. METHODS A search for in vitro and in vivo studies was performed using the databases Web of Science®, Medline®, Scopus® and Google Scholar®. Articles published over the past 20 years were selected and data on the BAG composition and morphology was extracted. Analysis of the effect of specific BAG additives on the properties of experimental dental materials was also performed. RESULTS A majority of BAG particles investigated were spheres ranging in size from 5 nm to ~650 µm. Sol-gel BAGs are mainly applied in the treatment of hypersensitive dentine and for pulp-dentine tissue engineering, while a handful have been used in target drug delivery. BAG fillers are promising additives that result in improved biological properties, antibacterial effects, hardness, acid buffering and remineralization. Unfortunately, some detrimental effects on optical properties have been observed with BAG addition. Additionally, in vivo data, investigations into radiopacity and standardization of test protocols are identified as areas for improvement and further studies. SIGNIFICANCE Future work should consider the pertinent issues raised in order to improve the quality of available data and expand knowledge in this area of dental biomaterials research and development.
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Freitas SAAD, Oliveira NMAD, de Geus JL, Souza SDFC, Pereira ADFV, Bauer J. Bioactive toothpastes in dentin hypersensitivity treatment: A systematic review. Saudi Dent J 2021; 33:395-403. [PMID: 34803279 PMCID: PMC8589619 DOI: 10.1016/j.sdentj.2021.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 03/12/2021] [Accepted: 04/18/2021] [Indexed: 11/30/2022] Open
Abstract
The use of bioactive materials is a recent proposal in the treatment of dentin hypersensitivity (DH) due to the ability to stimulate the neoformation of a barrier on dentin surface. Questions have arisen about the effectiveness of the materials to reduce DH when compared to the control groups (placebo or non-bioactive substance). Thus, the aim of this systematic review was to evaluate the randomized controlled trials in adult patients for DH treatment with a dentifrice containing bioactive glass, applied either at-home or in-office. Methods: The study was registered in PROSPERO and followed PRISMA guidelines. Searches were carried out in four databases (Pubmed/Medline, CENTRAL, Wbb of Science, LILACS) spanning from February 2020 to March 2020, with no language or publication date restrictions. A supplementary hand-search was performed by checking the list of references. The so-called gray literature of the national and international databases for theses and dissertations, as well as unfinished, in progress and unpublished studies were also searched. Results: After reading the titles and abstracts, articles that were duplicated (74 records) or unrelated to the systematic review (76 records) were excluded. Fifteen studies were evaluated considering seven at low risk of bias, four at high risk and four at moderate risk. Conclusion: The bioactive compounds at low concentrations (2.5–7.5%) can be used as treatment of DH both at-home and in-office.
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Affiliation(s)
| | | | | | | | | | - José Bauer
- School of Dentistry, Federal University of Maranhão (UFMA), São Luís, Maranhão, Brazil
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Mocquot C, Attik N, Pradelle-Plasse N, Grosgogeat B, Colon P. Bioactivity assessment of bioactive glasses for dental applications: A critical review. Dent Mater 2020; 36:1116-1143. [PMID: 32605848 DOI: 10.1016/j.dental.2020.03.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE In the context of minimally invasive dentistry and tissue conservation, bioactive products are valuable. The aim of this review was to identify, clarify, and classify the methodologies used to quantify the bioactive glasses bioactivity. METHODS Specific search strategies were performed in electronic databases: PubMed, Embase, Cochrane Library, and Scopus. Papers were selected after a review of their title, abstract, and full text. The following data were then examined for final selection: BAG investigated, objectives, criteria, methods, and outcomes. RESULTS Sixty-one studies published from 2001 to 2019, were included. The bioactivity of BAG can be evaluated in vitro in contact with solutions, enamel, dentin, or cells. Other studies have conducted in vivo evaluation by BAG contact with dentin and dental pulp. Studies have used various analysis techniques: evaluation of apatite with or without characterization or assessment of mechanical properties. Reprecipitation mechanisms and pulp cell stimulation are treated together through the term 'bioactivity'. SIGNIFICANCE Based on these results, we suggested a classification of methodologies for a better understanding of the bioactive properties of BAG. According to all in vitro studies, BAG appear to be bioactive materials. No consensus has been reached on the results of in vivo studies, and no comparison has been conducted between protocols to assess the bioactivity of other bioactive competitor products.
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Affiliation(s)
- Caroline Mocquot
- Université de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5615, Laboratoire des Multimatériaux et Interfaces, 69372 Lyon Cedex 08, France; Assistance Publique-Hôpitaux de Paris, Hôpital Rothschild, Service d'Odontologie, Université de Paris, Faculté dentaire, France.
| | - Nina Attik
- Université de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5615, Laboratoire des Multimatériaux et Interfaces, 69372 Lyon Cedex 08, France; Université de Lyon, Université Claude Bernard Lyon 1, Faculté d'Odontologie, 69008 Lyon, France.
| | - Nelly Pradelle-Plasse
- Université de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5615, Laboratoire des Multimatériaux et Interfaces, 69372 Lyon Cedex 08, France; Assistance Publique-Hôpitaux de Paris, Hôpital Rothschild, Service d'Odontologie, Université de Paris, Faculté dentaire, France
| | - Brigitte Grosgogeat
- Université de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5615, Laboratoire des Multimatériaux et Interfaces, 69372 Lyon Cedex 08, France; Université de Lyon, Université Claude Bernard Lyon 1, Faculté d'Odontologie, 69008 Lyon, France; Hospices civils de Lyon, Service d'Odontologie, 69007 Lyon, France
| | - Pierre Colon
- Université de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5615, Laboratoire des Multimatériaux et Interfaces, 69372 Lyon Cedex 08, France; Assistance Publique-Hôpitaux de Paris, Hôpital Rothschild, Service d'Odontologie, Université de Paris, Faculté dentaire, France
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Crystal growth in dentinal tubules with bio-calcium carbonate-silica sourced from equisetum grass. J Formos Med Assoc 2020; 119:1835-1841. [PMID: 32192793 DOI: 10.1016/j.jfma.2020.02.010] [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: 01/15/2020] [Revised: 02/19/2020] [Accepted: 02/23/2020] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND/PURPOSE One effective way to deal with dentin hypersensitivity is to develop materials to seal the tubules. The porous bio-calcium carbonate-silica (BCCS) contained well-dispersed CaCO3 would form calcium phosphates to seal the dentinal tubules when mixed with an acidic solution. The acidic hydrothermal treatment and calcination to isolate the BCCS from the agricultural waste like equisetum grass was used, which would be more environmentally friendly than chemically synthesized mesoporous biomaterials. The aim of this study was to develop mesoporous materials from natural resources to occlude the dentinal tubules which could be more environmentally-friendly. METHODS Dentin disc samples were prepared and treated with different methods as follows: (1) BCCS mixed with H3PO4; (2) BCCS mixed with KH2PO4; (3) Seal & Protect® was used as a comparison group. Sealing efficacy was evaluated by measuring the depths and percentages of precipitate occlusion in dentinal tubules with SEM. RESULTS The N2 adsorption-desorption isotherm of the BCCS demonstrated a pore size of around 15.0 nm and a surface area of 61 m2g-1. From the results of occlusion percentage and depth, the BCCS treated with H3PO4 or KH2PO4 demonstrated promising sealing efficacy than the commercial product. CONCLUSION This synthetic process used the agricultural waste equisetum grass to produce bio-calcium carbonate-silica would be environmentally friendly, which has great potential in treating exposed dentin related diseases.
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Anthoney D, Zahid S, Khalid H, Khurshid Z, Shah AT, Chaudhry AA, Khan AS. Effectiveness of Thymoquinone and Fluoridated Bioactive Glass/Nano-Oxide Contained Dentifrices on Abrasion and Dentine Tubules Occlusion: An Ex Vivo Study. Eur J Dent 2020; 14:45-54. [PMID: 32168531 PMCID: PMC7069742 DOI: 10.1055/s-0040-1703418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Objectives
Dentin hypersensitivity (DH) is mainly due to the loss and replenishment of minerals from tooth structure, where the lost minerals can be rehabilitated with a biomimetic approach. The objectives were to determine the relative dentin abrasivity (RDA) of experimental (EXT) dentifrices and to determine the efficacy to occlude dentinal tubules.
Materials and Methods
Experimental dentifrices contained nano-fluoridated bioactive glass (n-FBG: 1.5 wt.% [EXT-A], 2.5 wt.% [EXT-B], and 3.5 wt.% [EXT-C]), nano-zinc oxide (n-ZnO), and thymoquinone as active agents. Bovine dentin blocks were subjected to brushing treatments as per groups, that is, distilled water; commercial dentifrice (control, CT); EXT toothpastes; and EXT-D without active agents. Samples were tested for three-dimensional (3D) abrasion analysis according to ISO-11609:2010 (International Organization for Standardization [ISO]). The roughness average (Ra), RDA, surface topography, and elemental compositions were investigated.
Statistical Analysis
One-way analysis of variance (ANOVA) with post-hoc Tukey’s and Tamhane’s test was performed for characterizations using Statistical Package for the Social Sciences (SPSS) version 21. The result was considered significant with
p
-value ≤ 0.05.
Results
Comparisons of Ra differed significantly between all groups with
p
< 0.05 except CT and EXT-A. The RDA values of EXT-A, EXT-B, and EXT-C were calculated as 74.04, 84.26, and 116.24, respectively, which were well within the acceptable limit set by international standards. All n-FBG containing dentifrices demonstrated uniform occlusion of dentinal tubules; however, highly concentrated EXT dentifrices showed more occlusion.
Conclusions
Acceptable range of RDA and superior occlusion of tubules by novel dentifrices suggest that it may be recommended for treating DH.
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Affiliation(s)
- Daud Anthoney
- Department of Science of Dental Materials, Postgraduate Medical Institute, Lahore, Pakistan
| | - Shahreen Zahid
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan.,Department of Dental Materials, Avicenna Dental College, Lahore, Pakistan
| | - Hina Khalid
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan.,Department of Dental Materials, Rashid Latif Dental College, Lahore, Pakistan
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, College of Dentistry, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Asma Tufail Shah
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Abdul Samad Khan
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Wu Q, Mei ML, Wu X, Shi S, Xu Y, Chu CH, Chen Y. Remineralising effect of 45S5 bioactive glass on artificial caries in dentine. BMC Oral Health 2020; 20:49. [PMID: 32046691 PMCID: PMC7014937 DOI: 10.1186/s12903-020-1038-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/06/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND This study investigated the remineralisation effect of bioactive glass on artificial dentine caries. METHODS Dentine disks with artificial caries were treated with bioactive glass (group BAG), casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) (group CPP-ACP), sodium fluoride glycerol (group F) or deionized water (group W). All disks were subjected to pH cycling for 28 days subsequently. The topography, microhardness and remineralisation depth of the dentine carious lesion were assessed by atomic force microscopy (AFM), microhardness testing and confocal laser scanning microscope (CLSM), respectively. RESULTS AFM images indicated mineral depositions on the surface of the carious lesion in group BAG. The changes of Vickers hardness number (ΔVHN, mean ± SD) after pH cycling were 9.67 ± 3.60, 6.06 ± 3.83, 5.00 ± 2.19 and - 1.90 ± 2.09 (p < 0.001) in group BAG, group CPP-ACP, group F and group W, respectively. The remineralisation depth (mean ± SD) of the carious lesion in group BAG, group CPP-ACP, group F and group W were 165 ± 11 μm, 111 ± 11 μm, 75 ± 6 μm and 0 μm (p < 0.001), respectively. CONCLUSION Bioactive glass possessed a promising remineralisation effect on artificial dentine caries and could be a therapeutic choice for caries management.
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Affiliation(s)
- Qiong Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China.,Department of Polyclinics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - May Lei Mei
- Faculty of Dentistry, University of Otago, Dunedin, 9054, New Zealand.
| | - Xin Wu
- Department of Stomatology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Shuya Shi
- Department of Stomatology, Affiliated hospital of Jiangnan University, Wuxi, China
| | - Yuting Xu
- Stomatological Hospital Affiliated to Soochow University, Suzhou, China
| | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Yaming Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China. .,Department of Polyclinics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
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16
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Gul H, Nayyer M, Gilani M, Aman N, Azad AA, Shah AT, Chaudhry AA, Kaleem M, Khan AS. Comparative Fluoride Release and Antimicrobial Analysis of Commercial and Experimental Bioactive Glass/Nano-Oxide-Based Dentifrices. Eur J Dent 2020; 14:38-44. [PMID: 32018280 PMCID: PMC7069735 DOI: 10.1055/s-0040-1701292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES The objectives were to measure fluoride release and assess the antimicrobial behavior of fluoride-doped nano bioactive glass (F-nBG) and nano zinc oxide (ZnO)-enriched novel dentifrices. MATERIALS AND METHODS Experimental dentifrices were synthesized by incorporating ZnO nanoparticles and F-nBG (1.5 wt% and 4 wt%) as active ingredients. The fluoride release behavior of suspensions and elutes of samples were analyzed by ion selective electrode. Antimicrobial activity and minimum bactericidal concentration against Streptococcus mutans and Lactobacillus casei were evaluated. Microbial stability against contamination was also assessed by a challenge test. RESULTS The fluoride release behavior of experimental dentifrices was higher than that of commercial dentifrices and was dependent on filler loading. The fluoride release was more from suspensions than elutes. Zones of inhibition (ZOIs) and minimum bactericidal concentration values for novel dentifrices showed direct proportionality with filler loading, and effectiveness was exhibited against both strains. Experimental dentifrices exhibited effective antibacterial potential, which could possibly be due to release of sufficient fluoride and zinc ions in aqueous media from F-nBG and ZnO present in their formulations. CONCLUSION Combination of F-nBG and ZnO may provide a multi-benefit approach for simultaneously treating early white spot lesions, reducing bacterial growth, and providing core plaque control.
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Affiliation(s)
- Hashmat Gul
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Maleeha Nayyer
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Mehreen Gilani
- Department of Microbiology, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Nadia Aman
- Department of Operative Dentistry, Foundation University Medical College, Islamabad, Pakistan
| | - Azad Ali Azad
- Department of Prosthodontics, Armed Forces Institute of Dentistry, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Asma Tufail Shah
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Muhammad Kaleem
- Department of Dental Materials, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Abdul Samad Khan
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Waiyawat J, Kongsema M, Sinthuvanich C, Chienthavorn O, Teanchai C, Akkarachaneeyakorn K. Fabrication of calcium phosphate composite polymer/SLS-stabilized emulsion-based bioactive gels and their application for dentine tubule occlusion. J Oral Biosci 2019; 62:64-71. [PMID: 31857200 DOI: 10.1016/j.job.2019.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 11/09/2019] [Accepted: 11/14/2019] [Indexed: 11/20/2022]
Abstract
OBJECTIVES Calcium phosphate/SLS/P123 composite bioactive gels were prepared to achieve dentine tubule occlusion. METHODS Gels containing calcium phosphate particles were prepared in a water-in-oil microemulsion system with a mixture of triblock copolymer pluronic (P123) as a co-surfactant and sodium lauryl sulfate (SLS) as a surfactant in cyclohexane. Subsequently, calcium chloride dihydrate and sodium hydrogen phosphate aqueous solutions were added in a water phase. Finally, slow evaporation of the oil phase at room temperature was performed to produce a hybrid gel. The obtained gels were investigated for their toxicity by the sulforhodamine B (SRB) assay and applied on human dentine specimens to examine their ability to occlude dentine tubules. RESULTS The size and morphology of the calcium phosphate particles embedded in the gel depended on the concentration of P123 and SLS, which were used as a template for mineral precipitation. The prepared calcium phosphate particles (200-500 nm in diameter) with the maximum polymer and surfactant content exhibited spherical shapes. Further, on reducing their content twice and tenfold yields micro-particles with flower-like shapes. These bioactive gels were able to occlude into dentine tubules after 3 days of application with a plugging rate of 79.22% when using the smallest particles. In addition, calcium phosphate nanorods were transformed into dentine tubules with a maximum depth of 6 μm on increasing the amount of gel. CONCLUSIONS The bioactive gels were effectively used as bioactive fillers to occlude exposed human dentine tubules.
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Affiliation(s)
- Jutharat Waiyawat
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Mesayamas Kongsema
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Chomdao Sinthuvanich
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Orapin Chienthavorn
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Chayada Teanchai
- Faculty of Dentistry, Mahidol University, Bangkok, 10400, Thailand
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Lee EMR, Borges R, Marchi J, Paula Eduardo C, Marques MM. Bioactive glass and high‐intensity lasers as a promising treatment for dentin hypersensitivity: An in vitro study. J Biomed Mater Res B Appl Biomater 2019; 108:939-947. [DOI: 10.1002/jbm.b.34446] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/20/2019] [Accepted: 06/28/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Ester M. R. Lee
- Department of Restorative Dentistry, School of DentistryUniversity of Sao Paulo São Paulo SP Brazil
| | - Roger Borges
- Center for Natural Sciences and HumanitiesFederal University of ABC Santo André SP Brazil
| | - Juliana Marchi
- Center for Natural Sciences and HumanitiesFederal University of ABC Santo André SP Brazil
| | - Carlos Paula Eduardo
- Department of Restorative Dentistry, School of DentistryUniversity of Sao Paulo São Paulo SP Brazil
| | - Márcia M. Marques
- Post Graduation Program, School of DentistryUniversidade Ibirapuera São Paulo SP Brazil
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19
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Novel calcium encapsulated mesocellular siliceous foams for crystal growth in dentinal tubules. J Dent 2019; 83:61-66. [PMID: 30825570 DOI: 10.1016/j.jdent.2019.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/06/2019] [Accepted: 02/13/2019] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate the novel mesocellular siliceous foams (MCF) containing CaCO3 nanoparticles (denoted as CMCF) combined with phosphoric acid could occlude dentinal tubules through the formation of biomimetic crystal barrier. METHODS Ultrastructures of MCF and CMCF were examined by transmission electron microscopy (TEM). Elemental components were analyzed with energy dispersive X-ray spectrometry (EDX). CMCF was mixed with distilled water, 10%, 20% and 30% phosphoric acid then applied on dentine discs. Crystals were characterized by X-ray powder diffractometry (XRD). The sealing efficacy of the dentinal tubules was examined by scanning electron microscopy. RESULTS TEM images showed MCF presented a pore size of approximately 30.0 nm and CMCF contained abundant nano-CaCO3. Sealing efficacy showed that CMCF, when reacted with 30% phosphoric acid, would form crystals in the dentinal tubules to a depth of 83.2 ± 17.6 μm at an occlusion percentage of 75.6 ± 12.8% on average; both occlusion percentage and depth were higher than those obtained with 10% or 20% phosphoric acid (p < 0.05). The results of XRD and EDS indicated that the crystal growth in the dentinal tubules could be transformed into the biomimetic crystals. CONCLUSION This study showed that the CMCF with 30% phosphoric acid could effectively occlude the dentinal tubules through the formation of biomimetic crystal barrier. CLINICAL SIGNIFICANCE The novel CMCF combined with phosphoric acid may have potential for the treatment of dentine hypersensitivity.
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20
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Durgalakshmi D, Ajay Rakkesh R, Kesavan M, Ganapathy S, Ajithkumar TG, Karthikeyan S, Balakumar S. Highly reactive crystalline-phase-embedded strontium-bioactive nanorods for multimodal bioactive applications. Biomater Sci 2018; 6:1764-1776. [PMID: 29808842 DOI: 10.1039/c8bm00362a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In the present work, a crystallization-induced strontium-bioactive material, with a composition similar to Bioglass 45S5 system, was obtained using a sol-gel-assisted microwave method with nanorod morphologies of 30-80 nm in size. The effect of crystallization induced in the glass network, and its influence on the bioactivity and mechanical properties of bone and dentin regeneration, were the main novel findings of this work. Rietveld analysis of X-ray diffraction spectra showed the best fit with sodium (combeite, Na2Ca2Si3O9) and calcium (clinophosinaite, Ca2Na6O14P2Si2; calcium strontium silicate, Ca1.5O4SiSr0.5; and calcium carbonate, CaCO3) enriched crystal systems. Multinuclear solid-state NMR studies provided detailed atomistic insight into the presence of crystalline mineral phases in the bioactive material. The dentin matrix and antibacterial studies showed good results for 5% strontium-substituted calcium compared with basic 45S5 composition due to its smaller particle size (30 nm), which suggested applications to dentin regeneration. Simulation studies have been demonstrated with clinophosinaite crystal data from the XRD spectra, with the glycoprotein salivary metabolites also showing that 5% strontium-substituted calcium has a higher binding affinity for the salivary compound, which is suitable for dentin regeneration applications. In vitro apatite formation studies showed that this material is suitable for bone regeneration applications.
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Affiliation(s)
- D Durgalakshmi
- National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai, India.
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21
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Effect of different sizes of bioactive glass-coated mesoporous silica nanoparticles on dentinal tubule occlusion and mineralization. Clin Oral Investig 2018; 23:2129-2141. [DOI: 10.1007/s00784-018-2658-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 09/20/2018] [Indexed: 10/28/2022]
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22
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Bioactive glass for dentin remineralization: A systematic review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1369-1377. [DOI: 10.1016/j.msec.2017.03.083] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/06/2017] [Accepted: 03/12/2017] [Indexed: 11/19/2022]
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23
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Corral Nuñez C, Covarrubias C, Fernandez E, Oliveira OBD. Enhanced bioactive properties of BiodentineTM modified with bioactive glass nanoparticles. J Appl Oral Sci 2017; 25:177-185. [PMID: 28403358 PMCID: PMC5393538 DOI: 10.1590/1678-77572016-0209] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 12/15/2016] [Indexed: 11/21/2022] Open
Abstract
Objective To prepare nanocomposite cements based on the incorporation of bioactive glass nanoparticles (nBGs) into BiodentineTM (BD, Septodent, Saint-Maur-des-Fosses Cedex, France) and to assess their bioactive properties. Material and Methods nBGs were synthesised by the sol-gel method. BD nanocomposites (nBG/BD) were prepared with 1 and 2% nBGs by weight; unmodified BD and GC Fuji IX (GIC, GC Corporation, Tokyo, Japan) were used as references. The in vitro ability of the materials to induce apatite formation was assessed in SBF by X-ray diffraction (XRD), attenuated total reflectance with Fourier transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis. BD and nBG/BD were also applied to dentine discs for seven days; the morphology and elemental composition of the dentine-cement interface were analysed using SEM-EDX. Results One and two percent nBG/BD composites accelerated apatite formation on the disc surface after short-term immersion in SBF. Apatite was detected on the nBG/BD nanocomposites after three days, compared with seven days for unmodified BD. No apatite formation was detected on the GIC surface. nBG/BD formed a wider interfacial area with dentine than BD, showing blockage of dentine tubules and Si incorporation, suggesting intratubular precipitation. Conclusions The incorporation of nBGs into BD improves its in vitro bioactivity, accelerating the formation of a crystalline apatite layer on its surface after immersion in SBF. Compared with unmodified BD, nBG/BD showed a wider interfacial area with greater Si incorporation and intratubular precipitation of deposits when immersed in SBF.
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Affiliation(s)
- Camila Corral Nuñez
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Restauradora, Santiago, Chile.,Universidade Estadual Paulista - UNESP, Faculdade de Odontologia, Departmento de Odontologia Restauradora, Araraquara, Brazil
| | - Cristian Covarrubias
- Universidad de Chile, Facultad de Odontología, Instituto de Investigación en Ciencias Odontológicas, Laboratorio de Nanobiomateriales, Santiago, Chile
| | - Eduardo Fernandez
- Universidad de Chile, Facultad de Odontología, Departamento de Odontología Restauradora, Santiago, Chile
| | - Osmir Batista de Oliveira
- Universidade Estadual Paulista - UNESP, Faculdade de Odontologia, Departmento de Odontologia Restauradora, Araraquara, Brazil
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Comparison of in vitro dentinal tubule occluding efficacy of two different methods using a nano-scaled bioactive glass-containing desensitising agent. J Dent 2017; 60:63-69. [DOI: 10.1016/j.jdent.2017.03.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 02/23/2017] [Accepted: 03/01/2017] [Indexed: 12/29/2022] Open
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Jones DKF, Andrews GP, Jones DS. Strontium-containing, carbohydrate-based polymer networks as tooth-adherent systems for the treatment of dentine hypersensitivity. Carbohydr Polym 2017; 157:400-408. [PMID: 27987944 DOI: 10.1016/j.carbpol.2016.09.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 09/20/2016] [Accepted: 09/20/2016] [Indexed: 11/27/2022]
Abstract
This study describes the design/physicochemical properties of strontium-containing, mucoadhesive carbohydrate polymeric platforms, designed as treatments for dentine hypersensitivity. Interactive networks were composed of strontium chloride (10% w/w), one of two base polymers (sodium carboxymethylcellulose, NaCMC or hydroxyethylcellulose, HEC), polycarbophil (PC) and, when required, polyvinylpyrrolidone (PVP). The physicochemical properties were characterised using oscillatory and flow rheometry, texture profile analysis, mucoadhesion analysis and, additionally, the strontium release properties were examined. All platforms exhibited pseudoplastic flow. Increasing polymer concentrations increased network viscoelasticity, consistency, hardness, compressibility, gel strength, adhesiveness, mucoadhesion and, retarded strontium release. Principally zero-order strontium release was observed from all platforms. Incorporation of strontium reduced the network elasticity, consistency, hardness, compressibility, gel strength and mucoadhesion; HEC-based platforms being affected to a greater extent than NaCMC platforms. NaCMC-based platforms containing 10% strontium chloride, PVP (3% w/w) and PC (3% w/w) potentially displayed the correct balance of physicochemical properties for the treatment of dentine sensitivity.
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Affiliation(s)
- Dary K F Jones
- School of Pharmacy, Queen's University of Belfast, Belfast, Antrim, Northern Ireland, UK
| | - Gavin P Andrews
- School of Pharmacy, Queen's University of Belfast, Belfast, Antrim, Northern Ireland, UK
| | - David S Jones
- School of Pharmacy, Queen's University of Belfast, Belfast, Antrim, Northern Ireland, UK.
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Wang C, Zhu F, Cui Y, Ren H, Xie Y, Li A, Ji L, Qu X, Qiu D, Yang Z. An easy-to-use wound dressing gelatin-bioactive nanoparticle gel and its preliminary in vivo study. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:10. [PMID: 27915402 DOI: 10.1007/s10856-016-5823-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Beyond promoting hard tissue repairing, bioactive glasses (BGs) have also been proved to be beneficial for wound healing. Nano-scale BGs prepared by sol-gel method were found to have a better performance as they have a larger specific surface area. In this work, bioactive nanoparticles (nBPs) with mean diameter of 12 nm (BP-12) instead of conventional BGs were mixed with gelatin to form an easy-to-use hydrogel as a dressing for skin wound. It was found that the composite of BP-12 and gelatin could form a hydrogel (BP-12/Gel) under 25 °C, which showed pronounced thixotropy at a practically accessible shear rate, therefore become easy to be used for wound cover. In vitro, the composite hydrogel of BP-12 and gelatin had good biocompatibility with the fibroblast cells. In vivo, rapid cutaneous-tissue regeneration and tissue-structure formation within 7 days was observed in the wound-healing experiment performed in rats. This hydrogel is thus a promising easy-to-use wound dressing material.
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Affiliation(s)
- Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Feiyan Zhu
- University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Yang Cui
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Huihui Ren
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Yue Xie
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ailing Li
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lijun Ji
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Xiaozhong Qu
- University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - Zhenzhong Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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Khoroushi M, Shirban F, Kaveh S, Doustfateme S. Effect of three nanobiomaterials on microhardness of bleached enamel. Restor Dent Endod 2016; 41:196-201. [PMID: 27508161 PMCID: PMC4977350 DOI: 10.5395/rde.2016.41.3.196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/30/2016] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES The aim of this in vitro study was to evaluate the effect of incorporating three different nanobiomaterials into bleaching material on microhardness of bleached enamel. MATERIALS AND METHODS The crowns of 24 extracted sound human molars were sectioned. Sixty enamel specimens (2 × 3 × 4 mm) were selected and divided into five groups (n = 12): Group 1 received no bleaching procedure (control); Group 2 underwent bleaching with a 40% hydrogen peroxide (HP) gel; Groups 3, 4, and 5 were bleached with a 40% HP gel modified by incorporation of bioactive glass (BAG), amorphous calcium phosphate (ACP) and hydroxyapatite (HA), respectively. The enamel microhardness was evaluated. The differences in Knoop microhardness data of each group were analyzed by one-way ANOVA, followed by post hoc Tukey tests. RESULTS Significant differences were observed between the study groups. The enamel microhardness changes in Groups 1, 3, 4, and 5 were significantly lower than that of Group 2 (p < 0.001). CONCLUSIONS Within the limitations of this study, it can be concluded that incorporation of each one of the three tested biomaterials as remineralizing agents might be effective in decreasing enamel microhardness changes subsequent to in-office bleaching.
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Affiliation(s)
- Maryam Khoroushi
- Dental Materials Research Center, Department of Operative Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farinaz Shirban
- Dental Research Center and Department of Orthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sara Kaveh
- Department of Operative Dentistry, School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran
| | - Samaneh Doustfateme
- Persian Gulf Oral and Dental Disease Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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29
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Vichery C, Nedelec JM. Bioactive Glass Nanoparticles: From Synthesis to Materials Design for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E288. [PMID: 28773412 PMCID: PMC5502981 DOI: 10.3390/ma9040288] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/08/2016] [Accepted: 04/11/2016] [Indexed: 02/06/2023]
Abstract
Thanks to their high biocompatibility and bioactivity, bioactive glasses are very promising materials for soft and hard tissue repair and engineering. Because bioactivity and specific surface area intrinsically linked, the last decade has seen a focus on the development of highly porous and/or nano-sized materials. This review emphasizes the synthesis of bioactive glass nanoparticles and materials design strategies. The first part comprehensively covers mainly soft chemistry processes, which aim to obtain dispersible and monodispersed nanoparticles. The second part discusses the use of bioactive glass nanoparticles for medical applications, highlighting the design of materials. Mesoporous nanoparticles for drug delivery, injectable systems and scaffolds consisting of bioactive glass nanoparticles dispersed in a polymer, implant coatings and particle dispersions will be presented.
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Affiliation(s)
- Charlotte Vichery
- SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, BP 10448, Clermont-Ferrand F-63000, France.
- CNRS, UMR 6296, ICCF, Aubiere F-63178, France.
| | - Jean-Marie Nedelec
- SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, BP 10448, Clermont-Ferrand F-63000, France.
- CNRS, UMR 6296, ICCF, Aubiere F-63178, France.
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30
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Wren AW. Vitreous Materials for Dental Restoration and Reconstruction. BIOCOMPATIBLE GLASSES 2016. [DOI: 10.1007/978-3-319-44249-5_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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31
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Zheng K, Taccardi N, Beltrán AM, Sui B, Zhou T, Marthala VRR, Hartmann M, Boccaccini AR. Timing of calcium nitrate addition affects morphology, dispersity and composition of bioactive glass nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra05548f] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Bioactive glass nanoparticles (BGN) are promising materials for a number of biomedical applications.
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Affiliation(s)
- Kai Zheng
- Institute of Biomaterials
- Department of Materials Science and Engineering
- University of Erlangen–Nuremberg
- 91058 Erlangen
- Germany
| | - Nicola Taccardi
- Institute of Chemical Reaction Engineering
- University of Erlangen–Nuremberg
- 91058 Erlangen
- Germany
| | - Ana Maria Beltrán
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidad de Sevilla)
- 41092 Sevilla
- Spain
| | - Baiyan Sui
- Shanghai Biomaterials Research & Testing Center
- Shanghai Key Laboratory of Stomatology
- Ninth People's Hospital
- Shanghai Jiaotong University
- School of Medicine
| | - Tian Zhou
- Shanghai Biomaterials Research & Testing Center
- Shanghai Key Laboratory of Stomatology
- Ninth People's Hospital
- Shanghai Jiaotong University
- School of Medicine
| | - V. R. Reddy Marthala
- Erlangen Catalysis Resource Center
- University of Erlangen–Nuremberg
- 91058 Erlangen
- Germany
| | - Martin Hartmann
- Erlangen Catalysis Resource Center
- University of Erlangen–Nuremberg
- 91058 Erlangen
- Germany
| | - Aldo. R. Boccaccini
- Institute of Biomaterials
- Department of Materials Science and Engineering
- University of Erlangen–Nuremberg
- 91058 Erlangen
- Germany
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32
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Khoroushi M, Shirban F, Doustfateme S, Kaveh S. Effect of three nanobiomaterials on the surface roughness of bleached enamel. Contemp Clin Dent 2015; 6:466-70. [PMID: 26681849 PMCID: PMC4678542 DOI: 10.4103/0976-237x.169853] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The ever-increasing demand for enhanced esthetic appearance has resulted in significant developments in bleaching products. However, the enamel surface roughness (SR) might be negatively affected by bleaching agents. This in vitro study was undertaken to compare the effects of three nanobiomaterials on the enamel SR subsequent to bleaching. Materials and Methods: The crowns of six extracted intact nonerupted human third molars were sectioned. Five dental blocks measuring 2 mm × 3 mm × 4 mm were prepared from each tooth and placed in colorless translucent acrylic resin. The enamel areas from all the specimens were divided into five groups (n = 6): Group 1 did not undergo any bleaching procedures; Group 2 was bleached with a 40% hydrogen peroxide (HP) gel; Groups 3, 4, and 5 were bleached with a 40% HP gel modified by bioactive glass (BAG), amorphous calcium phosphate, and hydroxyapatite, respectively. The enamel SR was evaluated before and after treatment by atomic force microscopy. The data were analyzed by Kruskal–Wallis and Mann–Whitney tests. Results: SR increased significantly in the HP group. SR decreased significantly in the HP gel modified by BAG group as compared to other groups. Conclusions: Within the limitations of this study, incorporation of each one of the three test biomaterials proved effective in decreasing enamel SR subsequent to in-office bleaching technique.
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Affiliation(s)
- Maryam Khoroushi
- Department of Operative Dentistry, Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farinaz Shirban
- Department of Orthodontics, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Science, Isfahan, Iran
| | - Samaneh Doustfateme
- Department of Operative Dentistry, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Science, Isfahan, Iran
| | - Sara Kaveh
- Department of Operative Dentistry, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Science, Isfahan, Iran
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33
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Lopez TCC, Diniz IMA, Ferreira LS, Marchi J, Borges R, de Cara SPHM, D'Almeida‐Couto R, Marques MM. Bioactive glass plus laser phototherapy as promise candidates for dentine hypersensitivity treatment. J Biomed Mater Res B Appl Biomater 2015; 105:107-116. [DOI: 10.1002/jbm.b.33532] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/18/2015] [Accepted: 09/12/2015] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Leila Soares Ferreira
- Restorative Dentistry Department, School of DentistryUniversity of Sao Paulo Sao Paulo Brazil
| | - Juliana Marchi
- Federal University of ABC, Human and Natural Sciences Center Sao Paulo Brazil
| | - Roger Borges
- Federal University of ABC, Human and Natural Sciences Center Sao Paulo Brazil
| | | | - Roberta D'Almeida‐Couto
- Restorative Dentistry Department, School of DentistryUniversity of Sao Paulo Sao Paulo Brazil
- Restorative Dentistry Department, School of DentistryFederal University of ParáBelém Pará Brazil
| | - Márcia Martins Marques
- Restorative Dentistry Department, School of DentistryUniversity of Sao Paulo Sao Paulo Brazil
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34
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Jones JR. Reprint of: Review of bioactive glass: From Hench to hybrids. Acta Biomater 2015; 23 Suppl:S53-82. [PMID: 26235346 DOI: 10.1016/j.actbio.2015.07.019] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 08/10/2012] [Accepted: 08/14/2012] [Indexed: 02/07/2023]
Abstract
Bioactive glasses are reported to be able to stimulate more bone regeneration than other bioactive ceramics but they lag behind other bioactive ceramics in terms of commercial success. Bioactive glass has not yet reached its potential but research activity is growing. This paper reviews the current state of the art, starting with current products and moving onto recent developments. Larry Hench's 45S5 Bioglass® was the first artificial material that was found to form a chemical bond with bone, launching the field of bioactive ceramics. In vivo studies have shown that bioactive glasses bond with bone more rapidly than other bioceramics, and in vitro studies indicate that their osteogenic properties are due to their dissolution products stimulating osteoprogenitor cells at the genetic level. However, calcium phosphates such as tricalcium phosphate and synthetic hydroxyapatite are more widely used in the clinic. Some of the reasons are commercial, but others are due to the scientific limitations of the original Bioglass 45S5. An example is that it is difficult to produce porous bioactive glass templates (scaffolds) for bone regeneration from Bioglass 45S5 because it crystallizes during sintering. Recently, this has been overcome by understanding how the glass composition can be tailored to prevent crystallization. The sintering problems can also be avoided by synthesizing sol-gel glass, where the silica network is assembled at room temperature. Process developments in foaming, solid freeform fabrication and nanofibre spinning have now allowed the production of porous bioactive glass scaffolds from both melt- and sol-gel-derived glasses. An ideal scaffold for bone regeneration would share load with bone. Bioceramics cannot do this when the bone defect is subjected to cyclic loads, as they are brittle. To overcome this, bioactive glass polymer hybrids are being synthesized that have the potential to be tough, with congruent degradation of the bioactive inorganic and the polymer components. Key to this is creating nanoscale interpenetrating networks, the organic and inorganic components of which have covalent coupling between them, which involves careful control of the chemistry of the sol-gel process. Bioactive nanoparticles can also now be synthesized and their fate tracked as they are internalized in cells. This paper reviews the main developments in the field of bioactive glass and its variants, covering the importance of control of hierarchical structure, synthesis, processing and cellular response in the quest for new regenerative synthetic bone grafts. The paper takes the reader from Hench's Bioglass 45S5 to new hybrid materials that have tailorable mechanical properties and degradation rates.
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Affiliation(s)
- Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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35
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Abstract
OBJECTIVE This review defines dentine sensitivity (DS), its prevalence, its aetiology, the mechanism(s) responsible for DS, its diagnosis and its treatment. The review then examines the modes of action of various treatments for DS including potassium salts, strontium salts, bioglasses, arginine/calcium carbonate and professional treatments such as adhesives and oxalates. The methods used to evaluate the various treatment modalities are discussed, including laboratory studies and randomised controlled clinical trials. DATA SOURCES AND STUDY SELECTION A literature search was conducted using PubMed, Ovid Medline and Cochrane reviews for information on DS and its treatments, as well as laboratory and clinical studies used to evaluate the efficacy of various DS treatments. With regard to efficacy of treatments for DS only reports of clinical studies that were randomised, controlled and blinded were reviewed. The authors offer new insights into the shortcomings of the recent systematic review of the use of oxalates for DS. CONCLUSION The authors introduce the concept of a novel desensitising mouthrinse containing 1.4% potassium oxalate: Listerine® Advanced Defence Sensitive mouthrinse. Readers of this supplement issue of the Journal of Dentistry are invited to review the significance of managing the clinical problem of DS. They are also invited to assess data from laboratory and randomised controlled clinical studies in order to understand the advantages offered by regular use of 1.4% potassium oxalate-containing mouthrinse, Listerine Advanced Defence Sensitive, in particular its resistance to daily erosive and/or abrasive challenges.
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Affiliation(s)
- Maria Mantzourani
- Oral Care Scientific and Professional Affairs, Johnson & Johnson Consumer Services EAME Ltd, Foundation Park, Maidenhead, UK
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36
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Wang C, Shen H, Tian Y, Xie Y, Li A, Ji L, Niu Z, Wu D, Qiu D. Bioactive nanoparticle-gelatin composite scaffold with mechanical performance comparable to cancellous bones. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13061-8. [PMID: 25046034 DOI: 10.1021/am5029582] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Mechanical properties are among the most concerned issues for artificial bone grafting materials. The scaffolds used for bone grafts are either too brittle (glass) or too weak (polymer), and therefore composite scaffolds are naturally expected as the solution. However, despite the intensive studies on composite bone grafting materials, there still lacks a material that could be matched to the natural cancellous bones. In this study, nanosized bioactive particles (BP) with controllable size and good colloidal stability were used to composite with gelatin, forming macroporous scaffolds. It was found that the mechanical properties of obtained composite scaffolds, in terms of elastic modulus, compressive strength, and strain at failure, could match to that of natural cancellous bones. This is ascribed to the good distribution of particle in matrix and strong interaction between particle and gelatin. Furthermore, the incorporation of BPs endues the composite scaffolds with bioactivity, forming HA upon reacting with simulated body fluid (SBF) within days, thus stimulating preosteoblasts attachment, growth, and proliferation in these scaffolds. Together with their good mechanical properties, these composite scaffolds are promising artificial bone grating materials.
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Affiliation(s)
- Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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37
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Li X, Wang J, Joiner A, Chang J. The remineralisation of enamel: a review of the literature. J Dent 2014; 42 Suppl 1:S12-20. [DOI: 10.1016/s0300-5712(14)50003-6] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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38
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Wang C, Xie Y, Li A, Shen H, Wu D, Qiu D. Bioactive nanoparticle through postmodification of colloidal silica. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4935-4939. [PMID: 24673431 DOI: 10.1021/am5014858] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bioactive nanoparticles with controllable size and good colloidal stability were synthesized through surface modification of colloidal silica nanoparticles with Ca(OH)2 as the modifier. These modified nanoparticles showed good bioactivity, showing evidence of hydroxyapatite formation when incubated in simulated body fluid within 3 days. Comparison of bioactivity was made among different sized particles from nanoscale to microscale. It was found the bioactivity of these calcium modified colloidal silica particles generally decreased with particle size in the explored size range (40 nm particles showed bioactivity within 1 day). These particles were also found to be noncytotoxic but promote preosteoblast growth, thus making them promising bioactive additives for bone repair materials.
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Affiliation(s)
- Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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39
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Tsigkou O, Labbaf S, Stevens MM, Porter AE, Jones JR. Monodispersed bioactive glass submicron particles and their effect on bone marrow and adipose tissue-derived stem cells. Adv Healthc Mater 2014; 3:115-25. [PMID: 23832877 DOI: 10.1002/adhm.201300126] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Indexed: 02/06/2023]
Abstract
Spherical monodispersed bioactive particles are potential candidates for nanocomposite synthesis or as injectable particles that could be internalized by cells for the local sustained delivery of inorganic therapeutic ions (e.g., calcium or strontium). Particles are also likely to be released from porous bioactive glass and sol-gel hybrid scaffolds as they degrade; thus, it is vital to investigate their interaction with cells. Spherical monodispersed bioactive glass particles (mono-SMBG), with diameters of 215 ± 20 nm are synthesized using a modified Stöber process. Confocal and transmission electron microscopy demonstrate that mono-SMBGs are internalized by human bone marrow (MSCs) and adipose-derived stem cells (ADSCs) and located within cell vesicles and in the cytoplasm. Particle dissolution inside the cells is observed. Alamar Blue, MTT and Cyquant assays demonstrate that 50 μg mL(-1) of mono-SMBGs did not inhibit significantly MSC or ADSC metabolic activity. However, at higher concentrations (100 and 200 μg mL(-1)) small decrease in metabolic activity and total DNA is observed. Mono-SMBG did not induce ALPase activity, an early marker of osteogenic differentiation, without osteogenic supplements; however, in their presence osteogenic differentiation is achieved. Additionally, large numbers of particles are internalized by the cells but have little effect on cell behavior.
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Affiliation(s)
- Olga Tsigkou
- Department of Materials, Imperial College London, South Kensington Campus, SW7 2AZ, London, UK.
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40
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Effects of 45S5 bioglass on surface properties of dental enamel subjected to 35% hydrogen peroxide. Int J Oral Sci 2013; 5:103-10. [PMID: 23743618 PMCID: PMC3707074 DOI: 10.1038/ijos.2013.31] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 04/22/2013] [Indexed: 12/04/2022] Open
Abstract
Tooth bleaching agents may weaken the tooth structure. Therefore, it is important to minimize any risks of tooth hard tissue damage caused by bleaching agents. The aim of this study was to evaluate the effects of applying 45S5 bioglass (BG) before, after, and during 35% hydrogen peroxide (HP) bleaching on whitening efficacy, physicochemical properties and microstructures of bovine enamel. Seventy-two bovine enamel blocks were prepared and randomly divided into six groups: distilled deionized water (DDW), BG, HP, BG before HP, BG after HP and BG during HP. Colorimetric and microhardness tests were performed before and after the treatment procedure. Representative specimens from each group were selected for morphology investigation after the final tests. A significant color change was observed in group HP, BG before HP, BG after HP and BG during HP. The microhardness loss was in the following order: group HP>BG before HP, BG after HP>BG during HP>DDW, BG. The most obvious morphological alteration of was observed on enamel surfaces in group HP, and a slight morphological alteration was also detected in group BG before HP and BG after HP. Our findings suggest that the combination use of BG and HP could not impede the tooth whitening efficacy. Using BG during HP brought better protective effect than pre/post-bleaching use of BG, as it could more effectively reduce the mineral loss as well as retain the surface integrity of enamel. BG may serve as a promising biomimetic adjunct for bleaching therapy to prevent/restore the enamel damage induced by bleaching agents.
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41
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Li P, Xue Y, Zhang W, Teng F, Sun Y, Qu T, Chen X, Cheng X, Song B, Luo W, Yu Q. Sodium fluoride induces apoptosis in odontoblasts via a JNK-dependent mechanism. Toxicology 2013; 308:138-45. [PMID: 23578390 DOI: 10.1016/j.tox.2013.03.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 03/30/2013] [Accepted: 03/30/2013] [Indexed: 12/31/2022]
Abstract
Sodium fluoride (NaF) is widely used for the treatment of dental caries and dentin hypersensitivity. However, its pro-apoptotic effect on odontoblasts may lead to harmful side-effects. The purpose of this study was to evaluate the pro-apoptotic effects of NaF in odontoblasts and elucidate the possible underlying molecular mechanisms. NaF generated cytotoxic effects in odontoblast-lineage cell (OLC) in a dose- and time-dependent manner. Exposure of cells to 4mM NaF for 24h induced caspase-3 activation, ultrastructural alterations, and resulted in the translocation of Bax to the mitochondria and the release of cytochrome c from the mitochondrial inter-membrane space into the cytosol, indicating that fluoride-mediated apoptosis is mitochondria-dependent. Fluoride treatment also increased phosphorylation of JNK and ERK, but not p38, and apoptosis induced by fluoride was notably or partly suppressed by treatment with JNK or ERK inhibitors, respectively. Taken together, these findings suggest that NaF induces apoptosis in OLC odontoblasts through a JNK-dependent mitochondrial pathway.
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Affiliation(s)
- Peng Li
- Department of Operative Dentistry and Endodontics, School of Stomatology, Fourth Military Medical University, Xi'an 710032, PR China
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42
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Abstract
Advancement of materials technology has been immense, especially in the past 30 years. Ceramics has not been new to dentistry. Porcelain crowns, silica fillers in composite resins, and glass ionomer cements have already been proved to be successful. Materials used in the replacement of tissues have come a long way from being inert, to compatible, and now regenerative. When hydroxyapatite was believed to be the best biocompatible replacement material, Larry Hench developed a material using silica (glass) as the host material, incorporated with calcium and phosphorous to fuse broken bones. This material mimics bone material and stimulates the regrowth of new bone material. Thus, due to its biocompatibility and osteogenic capacity it came to be known as "bioactive glass-bioglass." It is now encompassed, along with synthetic hydroxyapatite, in the field of biomaterials science known as "bioactive ceramics." The aim of this article is to give a bird's-eye view, of the various uses in dentistry, of this novel, miracle material which can bond, induce osteogenesis, and also regenerate bone.
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Affiliation(s)
- Vidya Krishnan
- Professor and Head of the Department of Oral Medicine and Radiology, SRM Kattankulathur Dental College and Hospitals, Chennai, India
| | - T. Lakshmi
- Department of Pharmacology, Saveetha Dental College and Hospitals, Chennai, India
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43
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West N, Newcombe R, Hughes N, Mason S, Maggio B, Sufi F, Claydon N. A 3-day randomised clinical study investigating the efficacy of two toothpastes, designed to occlude dentine tubules, for the treatment of dentine hypersensitivity. J Dent 2013; 41:187-94. [DOI: 10.1016/j.jdent.2012.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 10/22/2012] [Accepted: 11/06/2012] [Indexed: 10/27/2022] Open
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44
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Jones JR. Review of bioactive glass: from Hench to hybrids. Acta Biomater 2013; 9:4457-86. [PMID: 22922331 DOI: 10.1016/j.actbio.2012.08.023] [Citation(s) in RCA: 990] [Impact Index Per Article: 90.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 08/10/2012] [Accepted: 08/14/2012] [Indexed: 12/18/2022]
Abstract
Bioactive glasses are reported to be able to stimulate more bone regeneration than other bioactive ceramics but they lag behind other bioactive ceramics in terms of commercial success. Bioactive glass has not yet reached its potential but research activity is growing. This paper reviews the current state of the art, starting with current products and moving onto recent developments. Larry Hench's 45S5 Bioglass® was the first artificial material that was found to form a chemical bond with bone, launching the field of bioactive ceramics. In vivo studies have shown that bioactive glasses bond with bone more rapidly than other bioceramics, and in vitro studies indicate that their osteogenic properties are due to their dissolution products stimulating osteoprogenitor cells at the genetic level. However, calcium phosphates such as tricalcium phosphate and synthetic hydroxyapatite are more widely used in the clinic. Some of the reasons are commercial, but others are due to the scientific limitations of the original Bioglass 45S5. An example is that it is difficult to produce porous bioactive glass templates (scaffolds) for bone regeneration from Bioglass 45S5 because it crystallizes during sintering. Recently, this has been overcome by understanding how the glass composition can be tailored to prevent crystallization. The sintering problems can also be avoided by synthesizing sol-gel glass, where the silica network is assembled at room temperature. Process developments in foaming, solid freeform fabrication and nanofibre spinning have now allowed the production of porous bioactive glass scaffolds from both melt- and sol-gel-derived glasses. An ideal scaffold for bone regeneration would share load with bone. Bioceramics cannot do this when the bone defect is subjected to cyclic loads, as they are brittle. To overcome this, bioactive glass polymer hybrids are being synthesized that have the potential to be tough, with congruent degradation of the bioactive inorganic and the polymer components. Key to this is creating nanoscale interpenetrating networks, the organic and inorganic components of which have covalent coupling between them, which involves careful control of the chemistry of the sol-gel process. Bioactive nanoparticles can also now be synthesized and their fate tracked as they are internalized in cells. This paper reviews the main developments in the field of bioactive glass and its variants, covering the importance of control of hierarchical structure, synthesis, processing and cellular response in the quest for new regenerative synthetic bone grafts. The paper takes the reader from Hench's Bioglass 45S5 to new hybrid materials that have tailorable mechanical properties and degradation rates.
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Affiliation(s)
- Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London, UK.
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45
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Sadiasa A, Franco RA, Seo HS, Lee BT. Hydroxyapatite delivery to dentine tubules using carboxymethyl cellulose dental hydrogel for treatment of dentine hypersensitivity. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jbise.2013.610123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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Wang Y, Li X, Chang J, Wu C, Deng Y. Effect of tricalcium silicate (Ca(3)SiO(5)) bioactive material on reducing enamel demineralization: an in vitro pH-cycling study. J Dent 2012; 40:1119-26. [PMID: 23000524 DOI: 10.1016/j.jdent.2012.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 09/05/2012] [Accepted: 09/11/2012] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES The aim of this study was to investigate the effect of Ca(3)SiO(5) on reducing enamel demineralization under pH-cycling conditions. METHODS Forty bovine enamel samples were treated under four conditions: group 1, double distilled water (negative control); group 2, 1000 ppm F (as NaF, positive control); group 3, Ca(3)SiO(5) slurry; and group 4, Ca(3)SiO(5)-F slurry (Ca(3)SiO(5) with 1000 ppm F aq.). All the specimens were treated with treatment materials 4 times each day. Samples in groups 1 and 2 were soaked in test solutions for 2 min and samples in groups 3 and 4 were painted in treatment slurry for 2 min. At times between treatments, they were immersed in citric acid solution 3 times a day and 15 s each time. All the procedures were repeated for 7 days. Knoop microhardness, scanning electron microscopy (SEM), X-ray diffraction (XRD) and atom force microscopy (AFM) were used to examine samples. RESULTS After treatment for 7 days, enamels in all the groups were significantly softened. The extents of microhardness reduction were 52.3%, 28.5%, 28.5% and 20.2% for groups 1, 2, 3 and 4, respectively. Samples in the negative control group showed a typical acid etched pattern while enamels in other groups were relatively compact. There was no significant difference between samples treated with Ca(3)SiO(5) and F. The combination of Ca(3)SiO(5) with F showed the best effect on reducing enamel demineralization. CONCLUSIONS Ca(3)SiO(5) is an effective material against enamel demineralization alone but in combination with F a better anti-demineralization effect may be obtained.
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Affiliation(s)
- Yueyue Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
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