Debridement effectiveness of two different techniques using negative pressure irrigation system

Abstract

Summary Objectives To evaluate the cleaning efficacy of two apical negative pressure irrigation techniques compared to needle irrigation. Materials and Methods Eighty extracted human single canal teeth were shaped and assigned to 3 experimental groups (n = 20) according to the irrigation technique performed and two negative control groups (n = 10) as follows: 1) NI (Max-I-Probe side-vented needle irrigation); 2) EV (EndoVac system); 3) EVM (EndoVac-modified technique); 4) EV-C (EndoVac-negative control); 5) NI-C (needle irrigation-negative control). A scanning electron microscopic evaluation was performed. The presence of debris and smear layer at all levels (coronal, middle, apical) was evaluated. Results and conclusions A new irrigation protocol, using EndoVac System resulted in better removal of the smear layer at all levels.