AIM This study describes a clinical case of type III dens invaginatus with an extensive periradicular lesion treated successfully. BACKGROUND Dens invaginatus is a maldevelopment of the dental germ which occurs as a result of the invagination of the enamel organ. These cases may present difficulties with respect to its diagnosis and treatment because of canal morphology. The success of endodo...

Peridural fibrosis is a major obstacle for a successful spinal surgery. The most common surgical method used for the treatment of spinal disorder is Lumbar discectomy. After the initial surgical intervention, approximately 20% of patients will undergo revision surgery within 5 years. The common attributes of surgical failure after performing lumbar discectomy are peridural, epidural and perineu...

this case report represents the outcome of endodontic treatment in an infected mandibular molar with periradicular periodontitis and inherent poor prognosis of root canal treatment due to severe root curvature. the tooth was successfully treated by leaving the mesial root non-obturated, the canal orifices were coronally sealed with calcium enriched mixture cement and a definitive coronal amalga...