Effect of Filler Content on Bonding Efficacy of 4-META MMA/TBB Bonding Agent

Abstract

The effect of adding micro filler to 4-META MMA/TBB dentin bonding agent was examined by measuring the wall-to-wall polymerization contraction gap of a commercial light-cured resin composite in a cylindrical dentin cavity and the tensile bond strength of the flat dentin surface. Gap formation was not completely prevented by using a filled dentin bonding agent although the tensile bond strength was significantly greater than that obtained using the unfilled dentin bonding agent. These results indicate that the addition of micro filler to the dentin bonding agent does not produce complete adaptation of the resin composite to the dentin cavity wall.

The effect of multi-ion releasing filler contents on the dentin bond strength of an adhesive resin developed for direct pulp-capping

“…Several studies have reported that adhesives containing filler particles may be one of the important factors influencing dentin bond strength [24][25][26][27][28] . Miyazaki et al clearly indicated that the highest bond strength was obtained with 10 wt% filler level and that the bond strength gradually decreased with increasing filler content 28) .…”

“…Furthermore, previous studies have reported that the filler content in adhesive influenced the dentin bond strength of composite resin [24][25][26][27][28] . The experimental adhesive containing S-PRG filler for direct pulpcapping ideally possess both high efficacy of promoting a reparative dentin and high dentin bond strength.…”

Effect of adhesive filler content on marginal adaptation of class II composite resin restorations

“…In this regard, one factor influencing the marginal seal of composite resin restorations relies on the effectiveness and properties of the adhesive layer [6]. In order to improve the radiopacity, mechanical properties and durability, manufacturers have added filler particles to the adhesive composition [7].…”

“…Some other bond strength studies, microtensile [24] and inverted cone tensile bond strength [25], reported no difference between filled and unfilled adhesives, meanwhile, Kasraei et al [9] reported an increase in microtensile bond strength with an incorporation of nanofiller of up to 1%. One study conducted by Tani et al [6] found that adding filler particles increased the tensile bond strength, but compromised the marginal seal compared to unfilled adhesive. One study from Martins et al [26] concluded that adding barium-borosilicate glass filler of up to 50% appeared to decrease the adhesive solubility without compromising its mechanical properties.…”

O efeito dos agentes clareadores sobre o esmalte, a resina composta e a interface adesiva: uma revisão da literatura

“…De uma forma semelhante ao que é feito com as resinas compostas, as partículas inorgânicas tendem a resultar num aumento da resistência coesiva da película de adesivo depositada sobre o substrato, a qual ajudaria a transmitir melhor as forças que incidem sobre a interface. Alguns autores tem constatado um aumento na resistência adesiva quando da adição de carga nos sistemas adesivos, assim como a diminuição da microinfiltração marginal (Tani et al, 1994;Perdigão et al, 1999). O adesivo também se torna mais viscoso, com a adição de partículas de carga, o que proporciona interfaces mais espessas e, consequentemente, mais elásticas que absorvem melhor o estresse da contração de polimerização das resinas compostas, evitando o descolamento da interface.…”