Factors that cause endodontic failures in general practices in Japan

Abstract

BackgroundBacterial biofilms that develop on root surfaces outside apical foramens have been found to be associated with refractory periapical periodontitis. However, several other factors cause endodontic failures apart from extraradicular biofilms. The aim of this study was to identify the factors causing endodontic failures in general practices in Japan.MethodsPatients diagnosed as having refractory periapical periodontitis by general practitioners and who requested endodontic treatment at Osaka University Dental Hospital were selected by checking medical records from April 2009 to March 2013. Factors causing endodontic failures were identified.ResultsA total of 103 teeth were selected, and 76 teeth completed root-canal treatment. Tooth extractions were required for 18 teeth after or without endodontic treatment. Six teeth required apicoectomy after endodontic treatment. One tooth needed hemisection. One tooth needed intentional replantation. One tooth needed adhesion and replantation. The main causes of treatment failure were open apices (24 teeth), perforation (18 teeth), and root fracture (13 teeth). In six teeth with open apices that required apicoectomy or extraction, extraradicular biofilms may have been related to endodontic failure.ConclusionsMost endodontic cases diagnosed with refractory periapical periodontitis by general practitioners were compromised by any other factors rather than extraradicular biofilms.Electronic supplementary materialThe online version of this article (10.1186/s12903-018-0530-6) contains supplementary material, which is available to authorized users.

Assessment of fractures in endodontically treated teeth restored with and without root canal posts using high-resolution cone beam computed tomography

“…The prevalence of apical lesions is high and increases in the presence of defective coronal restorations and procedural errors in endodontics, of which incomplete filling was the most common, followed by partial lateral condensation and canals without radiopaque filling ( 15 ). Among the main causes of root canal treatment failure are those that could be visualized radiographically, such as open apices, root perforations, and root fractures ( 16 ), while 45.1% of endodontically treated teeth showed a periapical lesion when assessed by CBCT ( 17 ).…”

Detection of Root Canal Anatomical Variations in Mandibular Premolars in an Egyptian Population

“…high level of agreement was recorded with K value ranges from (0.881 to 0.962). (21,22). In the present study, teeth sectioning and periapical radiography were selected to investigate root canal anatomy in mandibular premolars rather than teeth clearing in agreement with Assadian et al (2) , and Lu et al (3) who used teeth sectioning to investigate root canal anatomy of mandibular premolars in different ethnic groups , and also in agreement with Khedmat et al (4) who reported using periapical radiography and teeth sectioning for canal anatomy investigations of mandibular premolars.…”

“…Root canal treatment success depends mainly on knowledge of the root canal system morphology, successful negotiation, cleaning, shaping, and obturation. Knowledge of root canal anatomy is a cornerstone where subsequent procedures build up (21,22). Various forms and configurations of root canal system are displayed in human permanent dentition (23,24,25).…”

Graphene Family Nanomaterials: Properties and Potential Applications in Dentistry

“…The purpose of root canal treatment is to biomechanical clean an infected root canal system to destroy intracanal pathogens, decontaminate residually infected tissue, and avoid further intraoperative/postoperative infection. The main cause of endodontic failure is persisting infection in the root canal [70]. Recently developed photodynamic therapy has gained attention for effective canal disinfection while preserving dentin structures.…”