Effiсасy of Diode laser and Photoinduced Рhоtо-асоustiс Streaming Irrigation Techniques on Push-out Bond Strength of Endodontically Treated Teeth

Abstract

Comparative evaluation for the effectiveness of 980nm Diode laser and 2940nm Er:YAG laser irrigation activation on the bond strength of endodontically treated teeth. Methodology: Sixty mature permanent teeth with single root canal were gathered for the current study. Teeth were splited into 3 experimental groups, each comprising twenty specimens, according to the final irrigation method utilized. Group I: lateral-vented needle activation; Group II: 980 nanometer diode laser activation; Group III: 2940 nanometer Er:YAG laser activation with РIРS. Irrigation volume was standardized (4 ml) across all groups. Under continuous flush of irrigant solutions, the activation process was done for 40 seconds in every group. Push-out bond test was assessed at three thirds of each specimen by a universal testing machine. Results: The push-out bond strength test revealed a statistical significant difference among the laser groups and the lateral-vented needle group, with both the diode and Er:YAG lasers demonstrating higher bond strength compared to the side-vented needle group. Additionally, a statistical significant difference was observed within the three thirds in every group, with the apical third exhibiting the lowest mean bond strength value. Соnсlusiоns: Utilizing either the Er:YAG laser (PIPS) or diode for activating irrigation solution led to improved irrigant penetration and enhanced bond properties of the resin sealers.