Objective(s): This study aimed to investigate the role and the possible mechanisms involved in the immunoregulation of experimental periodontitis by Th17/Treg. Materials and Methods: Experimental periodontitis was established by silk thread ligation with Porphyromonasgingivalis daubing in the bilateral maxillary second molar of Male Sprague-Dawley (SD) rats. Alveolar bones were scanned by Micro...