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Fu D, Holles SB, England E, Zhang Y, Cheng S, Szczepanski C. Compatibility versus reaction diffusion: Factors that determine the heterogeneity of polymerized adhesive networks. Dent Mater 2024; 40:800-810. [PMID: 38485599 PMCID: PMC11098697 DOI: 10.1016/j.dental.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/20/2024] [Accepted: 03/02/2024] [Indexed: 05/18/2024]
Abstract
OBJECTIVES Heterogeneity and phase separation during network polymerization is a major issue contributing to the failure of dental adhesives. This study investigates how the ratio of hydrophobic crosslinkers to hydrophilic comonomer (C/H ratio), as well as cosolvent fraction (ethanol/water) influences the degree of heterogeneity and proclivity for phase separation in a series of model adhesive formulations. METHODS Twelve formulations were investigated, with 4 different C/H ratios (7:1, 2.2:1, 1:1, 0.5:1) and 3 different overall cosolvent fractions (0, 10 and 20 wt%). The heterogeneity and phase behavior were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), dynamic mechanical analysis (DMA), small-angle x-ray scattering (SAXS) and atomic force microscopy (AFM). RESULTS In resins without cosolvent, all characterizations confirm reduced heterogeneity as C/H ratio decreases. However, when 10 or 20 wt% of cosolvent is included in the adhesive formulation, a higher degree of heterogeneity and even distinct phase separation with domains ranging from a few hundreds of nanometers to a few micrometers in size form. This is particularly noticeable at lower C/H ratios, which is surprising as HEMA is commonly considered a compatibilizer between hydrophobic crosslinkers and aqueous (co)solvents. SIGNIFICANCE Our experiments demonstrate that formulations with lower C/H ratio and thus a lower viscosity experience later onsets of diffusion limitations during polymerization, which favors thermodynamically driven phase separation. Therefore, to determine or predict the resulting phase structure of adhesive materials, it is necessary to consider the kinetics and diffusion constraints during the formation of the polymer network and not just the compatibility of resin constituents.
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Affiliation(s)
- Denghao Fu
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA
| | - Sarah Beth Holles
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA
| | - Emily England
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA
| | - Yunlu Zhang
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA
| | - Shiwang Cheng
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA
| | - Caroline Szczepanski
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing MI 48824, USA.
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Xu J, Ma J, Tan Z, Zhang Q, Hu J, Li J. A 3D-FEA study on the impact of different preparation forms and materials on posterior occlusal veneers. J Mech Behav Biomed Mater 2024; 152:106462. [PMID: 38346366 DOI: 10.1016/j.jmbbm.2024.106462] [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: 01/07/2024] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 03/04/2024]
Abstract
OBJECTIVES To study the stress distribution and bonding performance in posterior occlusal veneers and tooth bodies under different preparation forms and materials. METHODS An isolated lower right first molar was prepared with non-retention type (type A), cavity-retained type (type B), and encircling-retention type (type C) forms. MicroCT images of the tooth were obtained and digitally converted into three-dimensional solid models. Three-dimensional models of veneers for the three abutment teeth were designed, fabricated, and divided into nine models (AEM, ALU, AVE, BEM, BLU, BVE, CEM, CLU, and CVE) according to the material used (E.max CAD [EM], Lava Ultimate [LU] and Vita Enamic [VE]). Three-dimensional finite element stress analysis was performed by applying vertical and oblique forces (200 N) to simulate chewing loads using ABAQUS. Finally, an adhesive stiffness degradation diagram was obtained using the rotatory dislocation simulation method. RESULTS The BEM model had the largest equivalent stress extreme value (160.50 MP A) when a vertical load was applied to the veneers, while there was no significant difference when it was applied to dental tissues. The equivalent stress extreme values of each part under an oblique load were significantly greater than those under a vertical load. The AEM model had the largest values when the loads were applied to the veneers (350.60 MP A) and the dental tissues (40.13 MP A). The equivalent stress extreme values of the veneers were ranked as LU < VE < EM for different materials, and LU > VE > EM for dental tissues. Bonding performance results were C > B ≈ A and LU > VE > EM. CONCLUSIONS The cavity-retained type better protected the veneers and dental tissues than the non-retention and encircling-retention types under lateral forces. E.max CAD material, with a high elastic modulus, reduced the stress transmitted to the remaining dental tissues. Lava Ultimate exhibited the best bonding performance.
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Affiliation(s)
- Junchen Xu
- Department of Geriatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomalogical Translational Medicine, China
| | - Junchi Ma
- Department of Geriatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomalogical Translational Medicine, China
| | - Zhaolin Tan
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Qi Zhang
- Department of Geriatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomalogical Translational Medicine, China
| | - Jian Hu
- Department of Geriatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomalogical Translational Medicine, China
| | - Jin Li
- Department of Geriatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, 136 Hanzhong Road, Nanjing, 210029, China; Jiangsu Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomalogical Translational Medicine, China.
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Alkattan R, Ajaj R, Koller G, Banerji S, Deb S. A self-etch bonding system with potential to eliminate selective etching and resist proteolytic degradation. J Dent 2023; 132:104501. [PMID: 36967082 DOI: 10.1016/j.jdent.2023.104501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/06/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
OBJECTIVES Bonded restorations using self-etch (SE) systems exhibit a limited lifespan due to their susceptibility to hydrolytic, enzymatic or fatigue degradation and poor performance on enamel. This study was conducted to develop and assess the performance of a two-step SE system using a functional monomer bis[2-(methacryloyloxy)ethyl]phosphate (BMEP) and demonstrate a strategy to enhance stability of bonded resin composite restorations to both enamel and dentine. METHODS A two-step SE system was formulated with a primer containing BMEP, with an adhesive with or without BMEP, and compared to a commercial 10-MDP-containing system, ClearfilTM SE Bond 2 (CFSE). The systems were evaluated on enamel for surface roughness and microshear bond strength (µSBS) and on dentine for microtensile bond strength (µTBS), nanoleakage, MMP inhibition and cyclic flexural fatigue. RESULTS Whilst all bonding systems resulted in statistically similar µSBS, BMEP-based primers yielded greater enamel surface roughness than the CFSE primer. The BMEP-free adhesives resulted in statistically similar or higher µTBS and lower nanoleakage compared to CFSE. In situ zymography revealed minimal to no MMP activity within the hybrid layer of BMEP-based systems. The BMEP-free adhesive exhibited flexural strength and fatigue resistance statistically similar to CFSE. CONCLUSIONS Incorporation of BMEP in the primer led to satisfactory bond strengths with both enamel and dentine, potentially eliminating the need for selective enamel etching. Combined with an adhesive formulation that is solvent-free and hydrophobic, and confining the acidic functional monomer in the primer resulted in minimal interfacial leakage, and resistance to proteolytic degradation and the cyclic nature of chewing. CLINICAL SIGNIFICANCE The SE bonding system containing BMEP combines the potent etching of phosphoric acid with the therapeutic function of the phosphate-based monomer in creating a homogenous hybrid layer with protection against endogenous proteolytic enzymes. This strategy may overcome current challenges that arise during selective enamel etching.
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Enhanced thermal stability of biobased crosslinked poly (isobornylacrylate-co-2-ethylhexylacrylate) copolymers. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03139-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Alkattan R, Banerji S, Deb S. A multi-functional dentine bonding system combining a phosphate monomer with eugenyl methacrylate. Dent Mater 2022; 38:1030-1043. [PMID: 35473789 DOI: 10.1016/j.dental.2022.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The tooth-resin composite interface is frequently associated with failure because of microbial contamination, hydrolytic and collagenolytic degradation. Thus, designing a dentine bonding system (DBS) with an intrinsically antimicrobial polymerisable monomer is of significance especially if it can be used with self-etching primers enabling resistance to degradation of the interface. METHODS Experimental adhesives were developed incorporating eugenyl methacrylate (EgMA) at concentrations of 0,10 or 20 wt%, designated as EgMA0, EgMA10 and EgMA20, respectively, for use as a two-step self-etch DBS with the functional monomer bis[2-(methacryloyloxy) ethyl] phosphate (BMEP) in the primer. The curing, thermal and wettability properties of the adhesives were determined, and hybrid layer formation was characterised by confocal laser scanning microscopy, microtensile bond strengths (µTBS) and nanoleakage by back-scattered SEM. In situ zymography was used to assess MMP inhibitory activity of the BMEP-EgMA DBS. RESULTS EgMA in the adhesives lowered the polymerisation exotherm and resulted in higher Tg, without negatively affecting degree of conversion. Water sorption and solubility were significantly lower with higher concentrations of EgMA in the adhesive. The formation of a distinct hybrid layer was evident from confocal images with the different adhesives, whilst EgMA20 yielded the highest µTBS post water storage challenges and lowest nanoleakage after 6 months. The experimental DBS exhibited minimal to no MMP activity at 3 months. SIGNIFICANCE The hydrophobic nature of EgMA and high cross-link density exerts considerable benefits in lowering water uptake and polymerisation exotherm. The application of EgMA, adhesives in conjunction with BMEP in a multi-functional self-etching DBS can resist MMP activity, hence, enhance longevity of the dentine-resin composite interface.
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Affiliation(s)
- Rana Alkattan
- Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK; Department of Restorative Dental Science, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Subir Banerji
- Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK; Department of Prosthodontics, University of Melbourne, Melbourne, Australia
| | - Sanjukta Deb
- Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK.
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Alkattan R, Koller G, Banerji S, Deb S. Bis[2-(Methacryloyloxy) Ethyl] Phosphate as a Primer for Enamel and Dentine. J Dent Res 2021; 100:1081-1089. [PMID: 34238050 PMCID: PMC8381596 DOI: 10.1177/00220345211023477] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Dental resin composites are commonly used in the restorative management
of teeth via adhesive bonding, which has evolved significantly over
the past few decades. Although current self-etch bonding systems
decrease the number of clinical steps, the acidic functional monomers
employed exhibit a limited extent of demineralization of enamel in
comparison to phosphoric acid etchants, and the resultant superficial
ionic interactions are prone to hydrolysis. This study evaluates the
etching of primers constituted with bis[2-(methacryloyloxy) ethyl]
phosphate (BMEP) of dental hard tissue, interfacial characteristics,
and inhibition of endogenous enzymes. We examine the incorporation of
2 concentrations of BMEP in the formulation of experimental primers
used with a hydrophobic adhesive to constitute a 2-step self-etching
bonding system and compare to a commercial 10–methacryloyloxydecyl
dihydrogen phosphate (10-MDP)–containing system. The interaction of
the primer with enamel and dentine was characterized using scanning
electron, confocal laser scanning, and Raman microscopy while the
polymerization reaction between the BMEP primers and hydroxyapatite
was evaluated by Fourier-transform infrared spectroscopy. The
inhibitory effect against matrix metalloproteinase (MMP) enzymes of
these primers was studied and percentage of inhibition analyzed using
1-way analysis of variance and Tukey’s post hoc test
(P < 0.05). Results of the scanning electron
microscopy micrographs demonstrated potent etching of both enamel and
dentine with the formation of longer resin tags with BMEP primers
compared to the 10-MDP–based system. The BMEP polymerized on
interaction with pure hydroxyapatite in the dark, while the 10-MDP
primer exhibited the formation of salts. Furthermore, BMEP primers
were able to inhibit MMP activity in a dose-dependent manner. BMEP
could be used as a self-etching primer on enamel and dentine, and the
high degree of polymerization in the presence of hydroxyapatite can
contribute to an increased quality of the resin polymer network,
prompting resistance to gelatinolytic and collagenolytic
degradation.
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Affiliation(s)
- R Alkattan
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK.,Department of Restorative Dental Science, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - G Koller
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK.,Centre for Host Microbiome Interactions, King's College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK.,London Centre for Nanotechnology, London, UK
| | - S Banerji
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK.,Department of Prosthodontics, University of Melbourne, Melbourne, Australia
| | - S Deb
- Centre for Oral, Clinical and Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
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Zhuo Y, Xia Z, Qi Y, Sumigawa T, Wu J, Šesták P, Lu Y, Håkonsen V, Li T, Wang F, Chen W, Xiao S, Long R, Kitamura T, Li L, He J, Zhang Z. Simultaneously Toughening and Stiffening Elastomers with Octuple Hydrogen Bonding. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008523. [PMID: 33938044 DOI: 10.1002/adma.202008523] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/04/2021] [Indexed: 06/12/2023]
Abstract
Current synthetic elastomers suffer from the well-known trade-off between toughness and stiffness. By a combination of multiscale experiments and atomistic simulations, a transparent unfilled elastomer with simultaneously enhanced toughness and stiffness is demonstrated. The designed elastomer comprises homogeneous networks with ultrastrong, reversible, and sacrificial octuple hydrogen bonding (HB), which evenly distribute the stress to each polymer chain during loading, thus enhancing stretchability and delaying fracture. Strong HBs and corresponding nanodomains enhance the stiffness by restricting the network mobility, and at the same time improve the toughness by dissipating energy during the transformation between different configurations. In addition, the stiffness mismatch between the hard HB domain and the soft poly(dimethylsiloxane)-rich phase promotes crack deflection and branching, which can further dissipate energy and alleviate local stress. These cooperative mechanisms endow the elastomer with both high fracture toughness (17016 J m-2 ) and high Young's modulus (14.7 MPa), circumventing the trade-off between toughness and stiffness. This work is expected to impact many fields of engineering requiring elastomers with unprecedented mechanical performance.
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Affiliation(s)
- Yizhi Zhuo
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Zhijie Xia
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026, China
| | - Yuan Qi
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Takashi Sumigawa
- Department of Mechanical Engineering and Science, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto, 6158540, Japan
| | - Jianyang Wu
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
- Department of Physics, Jiujiang Research Institute, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen, 361005, China
| | - Petr Šesták
- Central European Institute of Technology, Brno University of Technology, CEITEC BUT, Purkyňova 123, Brno, CZ-612 00, Czech Republic
| | - Yinan Lu
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Verner Håkonsen
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Tong Li
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Feng Wang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Wei Chen
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026, China
| | - Senbo Xiao
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Rong Long
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Takayuki Kitamura
- Department of Mechanical Engineering and Science, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto, 6158540, Japan
| | - Liangbin Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026, China
| | - Jianying He
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
| | - Zhiliang Zhang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
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Influence of two photodynamic therapy sessions and different photosensitizers on the bond strength of glass-fiber posts in different regions of intraradicular dentin. Photodiagnosis Photodyn Ther 2021; 33:102193. [PMID: 33503518 DOI: 10.1016/j.pdpdt.2021.102193] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/15/2020] [Accepted: 01/19/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Although photodynamic therapy associated with photosensitizers can promote microbial reduction, studies evaluating the consequences of two photodynamic therapy sessions associated with different photosensitizers on the bond strength of glass-fiber posts to endodontically treated intraradicular dentin are scarce. This in vitro study aimed to investigate the influence of two photodynamic therapy sessions using methylene blue or curcumin photosensitizers on the bond strength of glass-fiber posts to intraradicular dentin in different root thirds. METHODS Seventy-two teeth were divided into 9 experimental groups according to photosensitizer type, concentration and light-activation: Control - deionized water; Methylene blue 50 mg/L; Methylene blue 50 mg/L + laser; Methylene blue 100 mg/L; Methylene blue 100 mg/L + laser; Curcumin 500 mg/L; Curcumin 500 mg/L + LED; Curcumin 1000 mg/L; and Curcumin 1000 mg/L + LED. Push-out bond strength of the fiber posts to endodontically treated dentin was evaluated using a universal test machine (n = 8). Bond strength data underwent Kruskal-Wallis test, followed by Dunn test for comparison between treatments, and Friedman test for comparison between thirds (α = 0.05). Illustrative scanning electron microscopy images were obtained to qualify the failure mode. RESULTS Curcumin at higher concentration, activated or not by blue LED, decreased the bond strength values in the apical region when compared with the control group (P < 0.05). There was no difference between two photodynamic therapy sessions using methylene blue photosensitizer (activated or not) and the control group regardless of concentrations and root canal depth evaluated (P > 0.05). Regarding intraradicular depth, the different thirds showed no statistical difference on bond strength values (P > 0.05). All experimental groups presented predominance of mixed-type failure, excepting the methylene blue group at higher concentration activated by red laser, and the curcumin photosensitizer at both concentrations activated by blue LED. CONCLUSIONS Methylene blue at a 50 mg/L concentration can be applied in two PDT sessions, after biomechanical preparation and before glass-fiber post luting, as it presents no influence on root dentin bond strength in in vitro conditions.
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Strazzi-Sahyon HB, de Oliveira MS, da Silva PP, Banci HA, de Melo FS, Martinez CMT, Cintra LTA, Gomes-Filho JE, Dezan-Júnior E, dos Santos PH, Sivieri-Araujo G. Does photodynamic therapy with methylene blue affect the mechanical properties and bond strength of glass-fiber posts in different thirds of intraradicular dentin? Photodiagnosis Photodyn Ther 2020; 30:101673. [DOI: 10.1016/j.pdpdt.2020.101673] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/27/2019] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
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Strazzi Sahyon HB, Silva PPD, Oliveira MSD, Cintra LTA, Dezan-Júnior E, Gomes-Filho JE, Jacinto RDC, dos Santos PH, Sivieri-Araujo G. Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin. Photodiagnosis Photodyn Ther 2019; 25:376-381. [DOI: 10.1016/j.pdpdt.2019.01.025] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/18/2018] [Accepted: 01/18/2019] [Indexed: 01/03/2023]
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Strazzi Sahyon HB, Pereira da Silva P, Silva de Oliveira M, Angelo Cintra LT, Gomes-Filho JE, Henrique dos Santos P, Sivieri-Araujo G. Effect of photodynamic therapy on the mechanical properties and bond strength of glass-fiber posts to endodontically treated intraradicular dentin. J Prosthet Dent 2018; 120:317.e1-317.e7. [DOI: 10.1016/j.prosdent.2018.05.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/28/2018] [Accepted: 05/30/2018] [Indexed: 10/28/2022]
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Pelozo LL, Silva-Neto RD, Corona SAM, Palma-Dibb RG, Souza-Gabriel AE. Dentin pretreatment with Er:YAG laser and sodium ascorbate to improve the bond strength of glass fiber post. Lasers Med Sci 2018; 34:47-54. [DOI: 10.1007/s10103-018-2579-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/29/2018] [Indexed: 12/13/2022]
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