Bond strength of a composite resin to glass ionomer cements using different adhesive systems

Abstract

Introduction Glass ionomer cements are often used as a base or cavity lining prior to restorative material. Objective To evaluate the bond strength of a composite resin to different glass ionomer cements, when using a two-step conventional and self-etching adhesive systems. Material and method Three glass ionomer cements (Ketac Molar Easymix, Vitremer and Vitrebond), the composite resin Filtek Z350 XT and the adhesive systems Adper Single Bond 2, Clearfil SE Bond and Adper Easy One were used. As negative control, resin was bonded to cement without using an adhesive system. Holes (4 mm diameter, 2 mm deep) prepared in acrilic bloks were filled with the glass ionomer cements (n=12/group). On the surface, an area of 1mm in diameter was delimited, the adhesive system was applied, and a specimen of composite resin with 1 mm height was made. After 24 hours storage (37 °C and 100% humidity), the microshear test was performed. Data were analyzed using two-way ANOVA and Tukey test for comparison between groups (α=0.05). Result The adhesive systems significantly improved the bond strenght of composite resin to glass ionomer cements (p≤0.001). There was no significant difference in bond strength when self-etching adhesive systems were compared with the simplified etch-and-rinse adhesive, except for Vitrebond where Clearfil SE Bond determined higher bond strength when compared to Adper Single Bond 2 (p=0.003). Conclusion Self-etching adhesive systems are a good option for establishing the bond between the composite resin and the glass ionomer cement.

Comparative evaluation of the bonding of glass-ionomer cement modification to dental composite established by dental adhesives.

“…This has been suggested in many investigations, confirming the results of our study [11,20] . Worth mentioning that direct lamination of the RMGIC restoration with RBC without the application of any bonding agent resulted in a significantly lower bond strength than that recorded in all other adhesive groups, such results were in a harmony with those of Becci et al [21] .…”

Evaluation of Shear Bond Strength between Resin Composites and Conventional Glass Ionomer Cement in Class II Restorative Technique—An In Vitro Study

“…The use of the thermocycling process yields contradictory findings in different studies. Some studies stated that it enhances the bonding capacity of restorative materials, whereas others state that it weakens the bond or has no effect on the material's bonding ability [20,21]. The reason for such contradictory findings could originate from the different methodologies of various studies reported.…”

O uso e a inter-relação da resina composta e do cimento ionômero de vidro (CIV) nas restaurações sanduíches

“…No entanto, a alta sensibilidade técnica, a baixa resistência coesiva do CIV e a falta de ligação química entre o CIV e a RC, devido às diferenças em suas reações de presa, podem interferir nas propriedades finais da restauração, e consequentemente, na sua longevidade. Por esse motivo, o uso do CIVMR pode ser indicado (Becci et al, 2017;Navimipour et al, 2012;Ramos et al, 2018). Pandey et al (2019) relatam que alguns estudos sugeriram que a aplicação de CIVMR, em vez do CIV convencional, fornece melhores propriedades mecânicas, maior resistência à umidade, redução na microinfiltração e maior resistência de união à RC.…”

“…Isso ocorre, pois, a contaminação por umidade durante a configuração do cimento pode causar a dissolução das cadeias de poliacrilato de cálcio, alterando suas propriedades físicas. Portanto, é aconselhável aguardar a presa inicial do CIV, entre 2 a 7 minutos, dependendo das recomendações dos fabricantes, antes de realizar o condicionamento ácido e lavagem (Becci et al, 2017;Ramos, 2016).…”