Análise físico-química e histológica de um cimento de reparo endodôntico experimental à base de bioglass 45S5®.

• Ano de defesa: 2018
• Autor(a) principal: Michael Ranniery Garcia RIBEIRO
• Orientador(a): SOUZA, Soraia de Fátima Carvalho
• Banca de defesa: PASCHOAL, Marco Aurélio Benini , ABREU JUNIOR, Afonso Gomes , CONDE, Daniele Meira , LIMA, Darlon Martins , SOUZA, Soraia de Fátima Carvalho
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Maranhão
• Programa de Pós-Graduação: PROGRAMA DE PÓS-GRADUAÇÃO EM ODONTOLOGIA/CCBS
• Departamento: DEPARTAMENTO DE ODONTOLOGIA I/CCBS
• País: Brasil
• Palavras-chave em Português: Biovidro; Endodontia; Histológico; MTA; Reabsorção Radicular; Histological
• Palavras-chave em Inglês: Bioglass; Endodontics; MTA; Root resorption
• Área do conhecimento CNPq: Odontologia
• Link de acesso: https://tedebc.ufma.br/jspui/handle/tede/3183

An in vitro and in vivo study with an experimental endodontic repair cement containing 45S5 bioactive glass was conducted. There were three endodontic repair cement groups: 45S5 bioactive glass-based (BioG), zinc oxide-based (ZnO), and Mineral Trioxide Aggregate (MTA). In vitro tests were used to evaluate their physicochemical properties: compressive strength, modulus of elasticity, radiopacity, pH variation, and the ionic release of Ca+ and PO4. An animal model was used to evaluate the bone tissue response to endodontic repair cement. Comparisons employed an unpaired t-test or ANOVA and Tukey’s test ( = 5%). BioG showed the lowest compressive strength and ZnO showed the highest radiopacity among the groups, respectively (p < 0.05). There were no significant differences in the modulus of elasticity among the groups. BioG and MTA maintained an alkaline pH during the 7 days of evaluation, both at pH 4 and in a pH 7 buffered solutions. PO4 was elevated in BioG, peaking at 7 days (p < 0.05). Histological analysis showed less intense inflammatory reactions and new bone formation in MTA. BioG showed inflammatory reactions that decreased over time. The BioG experimental cement had good physicochemical characteristics and biocompatibility required for bioactive endodontic repair cement.