A comparative evaluation of fracture resistance of endodontically treated premolar teeth reinforced with different prefabricated and custom-made fiber-reinforced post system with two different post lengths: An in vitro study

Abstract

Aims:The aim of this study is to determine the mean failure load for each postsystem and the relationship between post lengths with the mean failure loads.Materials and Methods:Ninety single-rooted decoronated mandibular premolar teeth were endodontically treated and randomly assigned to three groups with respect to their post length (2/3rd and ½ of the root length). The first two groups were randomly divided into four subgroups, restored with the following postsystem: polyethylene-woven fiber posts, glass fiber tape, prefabricated carbon, and glass fiber posts. A composite core with no post served as control. All posts were cemented using dual-cure resin cement, and the same was used for core buildup. The standard cores were formed in each group. All the specimens were tested in a universal testing machine, and the load was calculated.Results:One-way analysis of variance (ANOVA) showed that prefabricated glass fiber post had significantly highest fracture resistance when compared to other prefabricated and custom fiber-reinforced composite posts. Two-way ANOVA demonstrated no significant difference among the post lengths.Conclusion:The results of this study showed that glass fiber posts showed higher fracture load, but post length did not significantly increase the fracture resistance of endodontically treated teeth.

Análise comparativa da resistência de união de pinos de fibra de vidro com diferentes sistemas adesivos

“…Contudo, alguns desafios ainda perduram, como por exemplo, a restauração de dentes tratados endodonticamente. 15,[25][26][27][28][29][30][31] E em alguns casos, torna-se necessário a utilização dos pinos de fibras de vidro, que são relativamente recentes no mercado e, como tal, necessitam de criteriosas avaliações para que sejam conhecidos seus benefícios e limitações em um tratamento restaurador. 15 De modo geral, o uso de pino intracanal para simplificar o procedimento restaurador deve ser evitado a fim de driblar os riscos associados à sua utilização.…”

Retenção intracanalar na reconstrução coronária de dentes tratados endodonticamente – uma revisão narrativa

“…Dentro das suas vantagens, apresentam uma alta estabilidade química, uma alta resistência à flexão (900-1200 MPa) e um módulo de elasticidade próximo ao das ligas de CoCr (240-280 MPa) (Guazzato et al, 2004;Ozkurt et al, 2010;Ree & Schwartz, 2010;Vadavadagi et al, 2017). As principais desvantagens dos retentores intracanalares de zircónia são: (i) a sua fragilidade, que os torna suscetíveis a fraturas; (ii) o seu custo; (iii) a sensibilidade da técnica de fabrico; (iv) a limitação de tratamento de superfície; e (v) os dispendiosos procedimentos de remoção (Koutayas & Kern, 1999;Thakur & Ramarao, 2019). Fraturas radiculares são comumente reportadas devido à diferença de propriedades (Baba et al, 2009;Cheung, 2005;Maroli et al, 2017;Ree & Schwartz, 2010;Trushkowsky, 2011).…”

Corono-radicular reinforcement with minimal invasion: A novel case report

“…The major advantage of such kind of post system is that it is possible to build up missing coronal tooth structures using composite restorative material, which provides interfacial integrity through the use of materials of similar elastic moduli. [ 4 5 ]…”