Healing of apical periodontitis after endodontic treatment using three different root canal sealers

In this study 3 commonly used sealers were evaluated. The materials tested were Proco‐Sol, a zinc oxide‐eugenol‐based sealer, AH26, an epoxy resin, and Klorperka NØ, a resin‐gutta‐percha‐chloroform sealer. The healing of periapical lesions was followed for a period of 3 years. While the response to Kloroperka NØ seemed slightly inferior to the 2 others, no statistically significant differences among the groups could be demonstrated.