The smear layer remaining after rotary or hand instrumentation not only contains infected tissue,but can seal infection within dentinal tubules. Scanning Electron Microscopy shows how treatment with Waterlase MD™ radial firing EndoTips™ leaves canal walls free of smear layer, and opens dental tubules, allowing YSGG laser energy to penetrate and destroy bacteria.
1. Siqueira and Rocas; "Polymerase chain reaction-based analysis of microorganisms associated with failed endodontic treatment, OOO,
2004 97;85-94