Influência da dispersão da nanopartícula de prata 23 ppm na resistência de união de um cimento resinoso autocondicionante à dentina radicular

• Autor(a) principal: Érnica, Mariana Fioravante [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/149613; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-01-30/000856510.pdf
• topic: Irrigantes do canal radicular; Pinos dentários; Hipoclorito de sódio; Clorexidina; Cimentos de resina; Root canal irrigants

This study aimed to evaluate the influence of endodontic irrigants on the bond strength of glass fiber posts cemented with self-etching resin cement on the root dentin. A total of 50 single-rooted premolars were used. The teeth had their coronary part sectioned and biomechanical preparation of root canals was performed. Specimens were randomly divided into 5 groups (n=10), according to the irrigating solutions: G1 - serum, G2 - sodium hypochlorite 2.5 %, G3 - 2% chlorhexidine gel, G4 - 2% chlorhexidine solution and G5 - silver nanoparticles in dispersion at 23 ppm. After instrumentation, root canals were filled using lateral condensation and Sealapex. Post preparations were performed and a final wash was performed using the corresponding irrigants. The posts were cemented with self-etching resin cement (Relyx Unicem - 3M ®). Bodies of proof were confectioned for shear extrusion (push-out) testing. Data were analyzed using ANOVA and Tukey tests (α=0.05). Silver nanoparticles in dispersion at 23 ppm increased the bond strength to intraradicular dentin (p<0.05). Sodium hypochlorite 2.5 % chlorhexidine gel 2% and 2% chlorhexidine solution, did not affect the bond strength (p>0.05). It can be concluded that the dispersed silver nanoparticles at 23 ppm used as endodontic irrigant can positively influence the bond strength of fiberglass posts cemented with self-etching resin cement to intraradicular dentin