Laser-activated irrigation (LAI) is a technique that improves the effectiveness of root canal disinfection. The method is conducted by using the LiteTouch™ Er:YAG laser (2940 nm), which is strongly absorbed by water, generating the cavitation bubbles –  rapid expansion, vaporization, and micro-explosions of the irrigant that enhance cleaning efficiency.

The LiteTouch™ Er:YAG LAI system has shown excellent performance in opening dentinal tubules, removing the smear layer, and disrupting bacterial biofilms.

This study explored the effects of the LiteTouch™ Er:YAG combined with the Endo tip on the mineral composition of dentin in various root canal regions when using the commonly irrigation solutions

The result: Continuous irrigation with EDTA, combined with LAI, caused the most significant reduction in calcium (Ca) and phosphorus (P) levels. A final rinse with NaOCl counteracted the mineral loss caused by EDTA, increasing oxygen (O) content. The diminished Ca/O and Ca/P ratios observed with EDTA irrigation were restored when followed by a NaOCl rinse.

The conclusion: The LiteTouch™ Er:YAG laser-activated irrigation, when combined with EDTA followed by a final NaOCl rinse minimized the mineral loss from the dentin.

To read more about lasers in Endodontics go to https://light-inst.com/applications/endodontics/