statement of problem: failure of endodontic treatment is determined on the basis of radiographic findings and clinical signs and/ or symptoms of the treated teeth. purpose: the purpose of this study was to determine endodontic treatment failure in relation to various factors influencing it in teeth with periapical lesions (clinically and radiographically). materials and methods: teeth which had...

taurodontism is a rare dental anomaly in which the involved tooth has an enlarged and elongated body and pulp chamber with apical displacement of the pulpal floor. endodontic treatment of these teeth is challenging, because it is hard to identify the number of root canals. in this article a case of bilateral involvement of maxillary first molars is presented. endodontic treatment of right maxil...

familiarity with the intricacies and variations of root canal morphology is essential for successful endodontic treatment. maxillary central and lateral incisors are known to be single-rooted with one canal, however, this case report describes endodontic treatment of maxillary central and lateral incisors with two buccopalatal root canals.

conclusions the frequency of isthmuses in the mesial root of mandibular first molars was high. the results of clinical and surgical endodontic procedures may be affected by this aspect of root canal anatomy. results isthmus was present in 54% of teeth. the greatest frequency of isthmuses was observed in the 5 mm from the apex. the type v isthmus was the most prevalent isthmuses between all leve...

background: during root canal treatment procedures, unexpected accidents may be confronted affecting long-term prognosis just as in any other dental treatment. the purpose of this study was to evaluate the knowledge of dental students of accidents and errors during endodontic treatment in medical university of babol. materials and methods: in this cross-sectional study, 52 senior dental student...

vertical root fracture (vrf) has been a great challenge in dentistry; most fractures often result in tooth extraction. inflammation of tissues around the fractured root is the main reason for tooth extraction. based on the strategic importance of some fractured teeth, treatment may be necessary and often complicated. however, performing a proper repair or even splinting the fractured segments m...

successful endodontic treatment requires thorough knowledge regarding each root canal system of any tooth and probability of extra canals should be considered. second maxillary molar with two palatal root canals is not frequent and its incidence reported in literatures is about 0.4–2%. the present case report describes non-surgical retreatment of maxillary second molar with two palatal root can...

introduction: root canal preparation techniques may cause postoperative pain. the aim of the present study was to compare the intensity of postoperative pain after endodontic treatment using hand files, single file rotary (oneshape), and single file reciprocating (reciproc) systems. methods and materials: in this single-blind, parallel-grouped randomized clinical trial a total of 150 healthy pa...

introduction: an important consideration in endodontic treatment is the elimination of microorganisms, including fungi, from the complex three- dimensional root canal system. candida albicans (ca) has a major role in endodontic treatment failure as the most important fungus isolated from the root canal system. the present study was carried out to evaluate the presence of ca in the teeth requiri...

introduction: the aim of this randomized-controlled clinical trial was to assess the effect of intraligamentary (pdl) injection of dexamethasone on onset and severity of post-treatment pain in patients with symptomatic irreversible pulpitis. methods and materials: a total number of 60 volunteers were included according to the inclusion criteria and were assigned to three groups ( n =20). after ...