Abstract
The lipoteichoic acid (LTA ) plays an important role in the etiology of pulp and periapical changes. This study aims to evaluate the lipoteichoic acid levels ( LTA ) present in root canals with necrotic pulp and apical periodontitis visible radiographically during endodontic treatment using mechanical instrumentation and sodium hypochlorite 2.5% . Moreover, a correlation is made between t…