Apical periodontitis, a chronic inflammatory lesion of the periradicular tissue, is caused by etiological agents endodontic origin. It considered as potent communication between microbiological factors and defense system host at interface periodontal ligament infected radicular pulp. Endodontic treatment failure often characterized existence post-treatment apical which may be persistent, recurr...

Pulp and Periradicular Pathways 2 Natural Pathways 2 Apical foramen 2 Lateral canals 4 Dentinal tubules 4 Pathological and Iatrogenic Pathways 5 Dental caries 5 Role of microorganisms 6 Root perforations 7 Root perforations during access preparation 7 Root perforations during cleaning and shaping 8 Root perforations during post space preparations 10 Vertical fracture 10 Periradicular Pathosis 1...

AIM A species-specific nested polymerase chain reaction (PCR) assay was used to investigate the occurrence of Campylobacter gracilis and C. rectus in primary root canal infections. METHODOLOGY Samples were collected from 57 single-rooted teeth with carious lesions, necrotic pulps and radiographic evidence of periradicular disease. Twenty-eight cases were diagnosed as chronic asymptomatic peri...

AIM The purpose of this prospective clinical study was to evaluate the outcome of periradicular surgery of molars after one year. METHODOLOGY The material consisted of 25 molars with 39 roots demonstrating periradicular lesions of endodontic origin. Surgical treatment included root-end resection, root-end preparation with sonic microtips, and root-end filling with Super-EBA cement. At the one...

introduction: periradicular surgery is an appropriate treatment method for dental periradicular impairments. the present study was carried out to analyze the knowledge of general dentists and dental specialists about periradicular surgery. methods: this descriptive cross-sectional study was conducted on 93 general dentists and 7 dental specialists (endodontists and oral and maxillofacial surgeo...

BACKGROUND Diabetic patients are more prone to oral infections and periradicular lesions due to changes in their immune system and qualitative and quantitative changes in normal flora of their mouth. The aim of this study was to evaluate the frequency of periradicular lesions in diabetic patients in Babol, North of Iran. METHODS From October 2011 to March 2012, 135 diabetic patients who refer...

Abstract Background: Diabetic patients are more prone to oral infections and periradicular lesions due to changes in their immune system and qualitative and quantitative changes in normal flora of their mouth. The aim of this study was to evaluate the frequency of periradicular lesions in diabetic patients in Babol, North of Iran. Methods: From October 2011 to March 2012, 135 diabetic patient...

The purpose of this study was to determine the effect of calcium sulfate (CS) on cementum deposition and osseous healing after periradicular surgery. The root canals of 24 mandibular premolars in four 2-yr-old beagle dogs were endodontically treated, followed 2 weeks later by periradicular surgery. Mineral trioxide aggregate (MTA) was used as root-end-filling material. The right or left side wa...

PURPOSE To assess periradicular lesions clinically and by computed tomography (CT) after endodontic surgery using either Portland cement or mineral trioxide aggregate (MTA) as a root-end filling material. METHODS Three patients diagnosed with periradicular lesions by cone-beam CT underwent endodontic surgery with root-end filling. Patient A was treated with MTA as the root-end filling materia...