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Melatonin-doped polymeric nanoparticles reinforce and remineralize radicular dentin: Morpho-histological, chemical and biomechanical studies. Dent Mater 2021; 37:1107-1120. [PMID: 33846017 DOI: 10.1016/j.dental.2021.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/15/2021] [Accepted: 03/28/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To investigate the effectiveness of novel polymeric nanoparticles (NPs) doped with melatonin (ML) in reducing dentin permeability and facilitating dentin remineralization after endodontic treatment. METHODS The effect of undoped NPs and ML-doped NPs (ML-NPs) was tested in radicular dentin, at 24 h and 6 m. A control group without NPs was included. ML liberation was measured. Radicular dentin was assessed for fluid filtration. Dentin remineralization was analyzed by scanning electron microscopy, AFM, Young's modulus (Ei), Nano DMA-tan delta, and Raman analysis. RESULTS ML release ranged from 1.85 mg/mL at 24 h to 0.033 mg/mL at 28 d. Both undoped NPs and ML-NPs treated dentin exhibited the lowest microleakage, but samples treated with ML-NPs exhibited hermetically sealed dentinal tubules and extended mineral deposits onto dentin. ML-NPs promoted higher and durable Ei, and functional remineralization at root dentin, generating differences between the values of tan delta among groups and creating zones of stress concentration. Undoped-NPs produced closure of some tubules and porosities at the expense of a relative mineral amorphization. Chemical remineralization based on mineral and organic assessments was higher in samples treated with ML-NPs. When using undoped NPs, precipitation of minerals occurred; however, radicular dentin was not mechanically reinforced but weakened over time. SIGNIFICANCE Application of ML-NPs in endodontically treated teeth, previous to the canal filling step, is encouraged due to occlusion of dentinal tubules and the reinforcement of the radicular dentin structure.
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Hydroxyapatite-based cements induce different apatite formation in radicular dentin. Dent Mater 2020; 36:167-178. [DOI: 10.1016/j.dental.2019.11.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 11/04/2019] [Accepted: 11/15/2019] [Indexed: 01/22/2023]
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Toledano M, Osorio E, Aguilera FS, Muñoz-Soto E, Toledano-Osorio M, López-López MT, Medina-Castillo AL, Carrasco-Carmona Á, Osorio R. Polymeric nanoparticles for endodontic therapy. J Mech Behav Biomed Mater 2019; 103:103606. [PMID: 32090933 DOI: 10.1016/j.jmbbm.2019.103606] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/19/2019] [Accepted: 12/23/2019] [Indexed: 11/16/2022]
Abstract
The effectiveness of novel polymeric nanoparticles (NPs) application in reducing dentin permeability and facilitating dentin remineralization after endodontic treatment was evaluated. The effect of undoped NPs, zinc, calcium and doxycycline-doped NPs (Zn-NPs, Ca-NPs and D-NPs, respectively) was tested in radicular dentin. A control group without NPs was included. Radicular dentin was assessed for fluid filtration. Dentin remineralization was analyzed by scanning and transmission electron microscopy, energy-dispersive analysis, AFM, Young's modulus (Ei), Nano DMA, Raman, and X-Ray Diffraction analysis. Ca-NPs and Zn-NPs treated dentin exhibited the lowest microleakage with hermetically sealed dentinal tubules and a zinc-based salt generation onto dentin. Zn-NPs favored crystallinity and promoted the highest Ei and functional remineralization at the apical dentin, generating differences between the values of complex modulus among groups. Ca-NPs produced closure of tubules and porosities at the expense of a relative mineral amorphization, without creating zones of stress concentration. The highest sealing efficacy was obtained in Zn-NPs-treated samples, along with the highest values of Young's modulus and dentin mineralization. These high values of Ei were obtained by closing voids, cracks, pores and tubules, and by strengthening the root dentin. When using undoped NPs or Ca-NPs, deposition of minerals occurred, but radicular dentin was not mechanically reinforced. Therefore, application of Zn-NPs in endodontically treated teeth previous to the canal filling is encouraged.
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Affiliation(s)
- Manuel Toledano
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
| | - Estrella Osorio
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
| | - Fátima S Aguilera
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
| | - Esther Muñoz-Soto
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
| | - Manuel Toledano-Osorio
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain.
| | - Modesto T López-López
- University of Granada, Faculty of Science, Applied Physics Department, Fuente Nueva S/n, Granada, 18071, Spain
| | - Antonio L Medina-Castillo
- NanoMyP, Spin-Off Enterprise from University of Granada, Edificio BIC-Granada, Avda. Innovación 1, Armilla, Granada, 18016, Spain
| | - Álvaro Carrasco-Carmona
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
| | - Raquel Osorio
- University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja S/n, Granada, 18071, Spain
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Toledano M, Muñoz-Soto E, Aguilera FS, Osorio E, González-Rodríguez MP, Pérez-Álvarez MC, Toledano-Osorio M, Osorio R. A zinc oxide-modified hydroxyapatite-based cement favored sealing ability in endodontically treated teeth. J Dent 2019; 88:103162. [DOI: 10.1016/j.jdent.2019.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 01/16/2023] Open
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Toledano M, Muñoz-Soto E, Aguilera FS, Osorio E, Pérez-Álvarez MC, García-Menocal JAD, Toledano-Osorio M, Osorio R. The mineralizing effect of zinc oxide-modified hydroxyapatite-based sealer on radicular dentin. Clin Oral Investig 2019; 24:285-299. [DOI: 10.1007/s00784-019-02938-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/02/2019] [Indexed: 11/30/2022]
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Deniz Sungur D, Moinzadeh AT, Wesselink PR, Çalt Tarhan S, Özok AR. Sealing efficacy of a single-cone root filling after post space preparation. Clin Oral Investig 2015; 20:1071-7. [PMID: 26411973 PMCID: PMC4873541 DOI: 10.1007/s00784-015-1593-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 08/29/2015] [Indexed: 11/30/2022]
Abstract
Objectives The aim of the present study was to compare the sealing efficacy of root fillings made by a single-cone technique with three different sealers and a cold lateral compaction technique with an epoxy sealer. Materials and methods Eighty extracted single-rooted human teeth were assigned to four experimental groups: group 1, single-cone and epoxy sealer; group 2, single-cone and calcium silicate-based sealer; group 3, single-cone and methacrylate resin-based sealer; and group 4, cold lateral compaction and epoxy sealer. Twenty extra teeth served as negative and positive controls. After preparation of a coronal post space, the sealing efficacy of the root fillings was assessed on a fluid transport setup. The results were analyzed using Kruskal-Wallis and Mann-Whitney U test. Results No fluid transport was detected for the negative controls whereas all the positive controls showed rapid fluid transport. No significant difference was detected between groups 1, 3, and 4 whereas group 2 demonstrated significantly more fluid transport than all the other experimental groups. Conclusions Root fillings made by a single-cone technique with the epoxy or methacrylate-based sealers were as effective after post space preparation as those made by a cold lateral technique with the epoxy sealer in sealing the root canal. Clinical Relevance Specific root canal sealers in combination with single-cone technique represent a noteworthy alternative to the use of cold lateral compaction technique when a post space is required. The use of effective endodontic procedures with simplified technical implementation may positively affect endodontic outcome.
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Affiliation(s)
- D Deniz Sungur
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Hacettepe Üniversitesi Diş Hekimliği Fakültesi Endodonti AD. 4. Kat, Sıhhiye, 06100, Ankara, Turkey
| | - A-T Moinzadeh
- Department of Endodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - P R Wesselink
- Department of Endodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - S Çalt Tarhan
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Hacettepe Üniversitesi Diş Hekimliği Fakültesi Endodonti AD. 4. Kat, Sıhhiye, 06100, Ankara, Turkey
| | - A R Özok
- Department of Endodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
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Mohammadi Z, Jafarzadeh H, Shalavi S, Bhandi S, Kinoshita JI. Resilon: Review of a New Material for Obturation of the Canal. J Contemp Dent Pract 2015; 16:407-14. [PMID: 26162262 DOI: 10.5005/jp-journals-10024-1698] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Resilon is a thermoplastic synthetic polymer-based endodontic material alternative to gutta-percha. It contains bioactive glass and also radiopaque fillers. It has the same handling properties as gutta-percha. For endodontic retreatment, it may be dissolved with some solvents, such as chloroform or softened with heat. The composition of Resilon and its sealer (Epiphany) bond to dentin and form a monoblock. A review of the literature and a discussion of its properties comparing to other root canal filling materials are presented.
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Affiliation(s)
- Zahed Mohammadi
- Department of Endodontics, Iranian Center for Endodontic Research (ICER), Research Institute of Dental Sciences Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Jafarzadeh
- Associate Professor, Faculty of Dentistry and Dental Research Center Vakilabad Blvd, Mashhad, Iran, PO Box: 91735-984, Phone: +98-51-38829501, Fax: +98-51-38829500, e-mail:
| | | | - Shilpa Bhandi
- Department of Conservative Dentistry and Endodontics Faculty of Dental Sciences, MS Ramajah University of Applied Sciences, Bengaluru, Karnataka, India
| | - Jun-Ichiro Kinoshita
- Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
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Khan AS, Azam MT, Khan M, Mian SA, Rehman IU. An update on glass fiber dental restorative composites: A systematic review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 47:26-39. [DOI: 10.1016/j.msec.2014.11.015] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 09/22/2014] [Accepted: 11/06/2014] [Indexed: 11/29/2022]
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Lotfi M, Ghasemi N, Rahimi S, Vosoughhosseini S, Saghiri MA, Shahidi A. Resilon: a comprehensive literature review. J Dent Res Dent Clin Dent Prospects 2013; 7:119-30. [PMID: 24082982 PMCID: PMC3779370 DOI: 10.5681/joddd.2013.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 03/23/2013] [Indexed: 11/17/2022] Open
Abstract
Background and aims. An ideal root canal filling material should completely seal the entire root canal space and block communication between the root canal system and its surrounding tissues; it should also be nontoxic, noncarcinogenic, non-genotoxic, biocompatible, insoluble in tissue fluids and dimensionally stable. Bonding to dentin is a promising property, which can prevent leakage and improve the sealing ability of root canal filling materials. Resilon was developed and rec-ommended initially because the existing rootcanal filling materials did not bond to root canal dentin. Since its introduction in 2004, numerous reports have been published regarding various aspects of this material. The aim of this literature review is to present investigations regarding Resilon's physical and chemical properties and leakage studies. Materials and methods. A review of the literature was performed by using electronic and hand searching methods for Resilon from May 2004 to April 2012. Results. There are many published reports regarding Resilon. The searchshowed that Resilon is composed of a parent polymer, polycaprolactone or Tone, which is a biodegradable aliphatic polyester, with filler particles consisting of bioactive glass, bismuth oxychloride and barium sulfate. It possesses some antibacterial and antifungal properties. It is a promising material for root canal filling. Despite the presence of numerous case reports and case series regarding these applications, there are few designed research studies on clinical applications of this material. Resilon has some drawbacks such as high cost. Conclusion. Resilon seals well and is a biocompatible material. However, more clinical studies are needed to confirm its efficacy compared with other materials.
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Affiliation(s)
- Mehrdad Lotfi
- Professor, Department of Endodontic, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Negin Ghasemi
- Postgraduate Student, Department of Endodontic, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Rahimi
- Professor, Department of Endodontic, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
- Dental and Periodontal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepideh Vosoughhosseini
- Associate Professor, Department of Oral and Maxillofacial Pathology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Ali Saghiri
- Research Associated, Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public health, Madison, WI, USA
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Sun B, Zuo Y, Li J, Wang L, Tang K, Huang D, Du J, Luo P, Li Y. High conversion self-curing sealer based on a novel injectable polyurethane system for root canal filling. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3138-45. [PMID: 23706193 DOI: 10.1016/j.msec.2013.03.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 02/16/2013] [Accepted: 03/05/2013] [Indexed: 11/25/2022]
Abstract
Low monomer-polymer conversion is the key factor leading to cytotoxicity for resin-containing restorative materials. This paper provides a new root canal filling system based on self-curing injectable polyurethane which can achieve high conversion in a short time. Traced FTIR spectra show more than 90% NCO group participated in the curing reaction after 4h, and only about 5% remained after 24h. The calculated data also testified the curing process supports a third-order reaction, and this efficient and sufficient reaction is postulated to weaken the toxic stimulation. By culturing with L929 murine fibroblasts, the PU sealer is shown to be favorable for cell attachment and proliferation. Then physicochemical properties of the injectable PU-based sealer were evaluated according to the Standard [ISO 6876:2001 (E)] for clinical application. A series of physicochemical properties of PU sealer have been tested comparing with AH Plus and Apexit Plus. And the results present that the self-curing PU sealer could not only match the clinic requirements, but even has better properties than the other two commercial sealers. We expect the high conversion PU sealer has a tremendous potential in the field of root canal filling after further biological evaluation.
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Affiliation(s)
- Bin Sun
- Research Center for Nano-Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, PR China
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Mestres G, Aguilera FS, Manzanares N, Sauro S, Osorio R, Toledano M, Ginebra MP. Magnesium phosphate cements for endodontic applications with improved long-term sealing ability. Int Endod J 2013; 47:127-39. [DOI: 10.1111/iej.12123] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 04/03/2013] [Indexed: 11/30/2022]
Affiliation(s)
- G. Mestres
- Biomaterials; Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgy; Technical University of Catalonia; Barcelona Spain
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine (CIBER-BBN); Barcelona Spain
| | - F. S. Aguilera
- Department of Dental Materials; School of Dentistry; University of Granada; Granada Spain
| | - N. Manzanares
- School of Dentistry; University of Barcelona; Barcelona Spain
| | - S. Sauro
- Department of Dental Materials; School of Dentistry; University of Granada; Granada Spain
- Biomaterials; Biomimetics and Biophotonics (B ); King's College London Dental Institute; Guy's Dental Hospital; London UK
| | - R. Osorio
- Department of Dental Materials; School of Dentistry; University of Granada; Granada Spain
| | - M. Toledano
- Department of Dental Materials; School of Dentistry; University of Granada; Granada Spain
| | - M. P. Ginebra
- Biomaterials; Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgy; Technical University of Catalonia; Barcelona Spain
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine (CIBER-BBN); Barcelona Spain
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Chieruzzi M, Pagano S, Pennacchi M, Lombardo G, D’Errico P, Kenny JM. Compressive and flexural behaviour of fibre reinforced endodontic posts. J Dent 2012; 40:968-78. [DOI: 10.1016/j.jdent.2012.08.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 07/31/2012] [Accepted: 08/04/2012] [Indexed: 10/28/2022] Open
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