Authors such as Saupe et al., Katebzadeh et al., Liang et al., Wu et al., and Fukui et al., concluded that the use of metallic posts with resin increased resistance to fracture, and that this difference was statistically significant when compared to unfilled posts.
Por su parte autores como Saupe et al. , Katebzadeh et al. , Liang et al. , Wu et al. , y Fukui et al. , concluyeron que el uso de postes metálicos con resina incrementan la resistencia a la fractura, siendo estadísticamente significativa esta diferencia con los que no usan relleno.