Does photodynamic therapy with methylene blue affect the mechanical properties and bond strength of glass-fiber posts in different thirds of intraradicular dentin?
dc.contributor.author | Strazzi-Sahyon, Henrico Badaoui [UNESP] | |
dc.contributor.author | de Oliveira, Murilo Silva [UNESP] | |
dc.contributor.author | da Silva, Paloma Pereira [UNESP] | |
dc.contributor.author | Banci, Henrique Augusto [UNESP] | |
dc.contributor.author | de Melo, Fernanda Santos [UNESP] | |
dc.contributor.author | Martinez, Carolina Martins Teixeira [UNESP] | |
dc.contributor.author | Cintra, Luciano Tavares Angelo [UNESP] | |
dc.contributor.author | Gomes-Filho, João Eduardo [UNESP] | |
dc.contributor.author | Dezan-Júnior, Eloi [UNESP] | |
dc.contributor.author | dos Santos, Paulo Henrique [UNESP] | |
dc.contributor.author | Sivieri-Araujo, Gustavo [UNESP] | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2020-12-12T01:55:52Z | |
dc.date.available | 2020-12-12T01:55:52Z | |
dc.date.issued | 2020-06-01 | |
dc.description.abstract | Background: There are few studies on the influence of methylene blue as a photosensitiser on the mechanical properties and adhesion of glass-fiber posts to intraradicular dentin. Thus, this in vitro study aimed to evaluate the influence of photodynamic therapy with a methylene blue photosensitizer on the Martens hardness, elastic modulus, and bond strength of glass-fiber posts in different thirds of intraradicular dentin. Methods: Eighty bovine teeth were divided into the following five groups: a control using deionized water, and four other groups according to the methylene blue concentration (50 mg/L or 100 mg/L) and substrate treatment (with or without red laser action). Ultramicrohardness test was used to evaluate the mechanical properties in different regions of the root dentin (n = 8). Push-out analysis was evaluated using a universal testing machine (n = 8). Data were subjected to the Kruskal–Wallis test, followed by Dunn's test for comparing groups, and the Friedman test for comparing thirds (α = 0.05). Representative scanning electron microscopy images were obtained. Results: In general, methylene blue in distinct concentrations, with or without laser action, did not cause differences in the mechanical properties or bond strength in different regions of root dentin (P > 0.05). Methylene blue at a higher concentration, activated with laser, produced lower bond strength values in the middle third of the root canal (P < 0.05). Conclusions: Methylene blue at 50 mg/L had no influence on the mechanical properties of the bovine tooth and the bond strength of the glass-fiber posts to intraradicular dentin. | en |
dc.description.affiliation | Department of Dental Materials and Prosthodontics Araçatuba School of Dentistry São Paulo State University – UNESP | |
dc.description.affiliation | Department of Restorative Dentistry Discipline of Endodontics Araçatuba School of Dentistry São Paulo State University – UNESP | |
dc.description.affiliationUnesp | Department of Dental Materials and Prosthodontics Araçatuba School of Dentistry São Paulo State University – UNESP | |
dc.description.affiliationUnesp | Department of Restorative Dentistry Discipline of Endodontics Araçatuba School of Dentistry São Paulo State University – UNESP | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorshipId | FAPESP: #2015/06056-3 | |
dc.identifier | http://dx.doi.org/10.1016/j.pdpdt.2020.101673 | |
dc.identifier.citation | Photodiagnosis and Photodynamic Therapy, v. 30. | |
dc.identifier.doi | 10.1016/j.pdpdt.2020.101673 | |
dc.identifier.issn | 1873-1597 | |
dc.identifier.issn | 1572-1000 | |
dc.identifier.scopus | 2-s2.0-85079004047 | |
dc.identifier.uri | http://hdl.handle.net/11449/200034 | |
dc.language.iso | eng | |
dc.relation.ispartof | Photodiagnosis and Photodynamic Therapy | |
dc.source | Scopus | |
dc.subject | Dentin | |
dc.subject | Elastic modulus | |
dc.subject | Hardness | |
dc.subject | Methylene blue | |
dc.subject | Photodynamic therapy | |
dc.subject | Push Out | |
dc.title | Does photodynamic therapy with methylene blue affect the mechanical properties and bond strength of glass-fiber posts in different thirds of intraradicular dentin? | en |
dc.type | Artigo | |
unesp.author.orcid | 0000-0002-4100-5153[10] |