Leziunile periodonţiului apical frecvent sunt cauzate de microflora canalului radicular, clinic şi radiologic de multe ori se prezintă ca leziuni asociate de parodonţiul marginal. În rezolvarea acestor situaţii practicienii recurg frecvent la tratamentul chirurgical, care este adesea sortit eşecului, dacă nu este acompaniat de un tratament endodontic corect.

Periodontal lesions are frequently caused by the root canal microbiota, which radiographically and clinically present itself as lesions associated with the disease of the periodontium. As a treatment method of these situations, practitioners often imply the surgical method of treatment, a method which will most probably fail, if not done in correlation with the correct endodontic treatment.