The Effect of Etching Time with Phosphoric Acid on The Bonding Strength of Composite Restoration in Dentine of Primary molar

The etching primary teeth dentin is more important factors for bonding composit with primary teeth dentin. objective: The aim of this research is to know the effect of time etching with the phosphoric acid 37% by duration (7 or 15 seconds) for the composite bonding strength with primary molar dentin towards shear strength.

Effect of Acid Etching Duration on Resin Bond Strength to Primary Enamel Using 37% Phosphoric Acid

Etching by phosphoric acid is considered an important factor to achieve resin bonding to Primary enamel. Bond strength was significantly higher in the third group (etching for 35sec) than the other groups (etching for (15), (25), or (45)sec). There were no significant differences in bond strength between etch durations: (15), (25), or (45) sec.

An In Vitro Comparative Study On The Effect Of Different Etching Systems On Bonding Strength Of Giomer To Conventional Glass Ionomer Cement

An appropriate bond between glass‑ionomer and the superficial resin materials is very important for the success of sandwich technique. The aim of the present in vitro study was to evaluate the effect of three surface treatments of conventional glass‑ionomer on its shear bond strength to giomer