introduction: the aim of this study was to evaluate the antimicrobial effect of eucalyptus galbie and myrtus communis l. methanolic extracts, chlorhexidine (chx) and sodium hypochlorite (naocl) on enterococcus faecalis (e. faecalis) as the predominant species isolated from infected root canals. methods and materials: one hundred twenty mandibular premolars were randomly divided into 8 groups: e...

knowledge about the morphology of the root canal system is a pre-requisite for achieving a successful outcome in root canal treatment. in this report, a patient with a maxillary lateral incisor which had previously undergone orthograde endodontic retreatment for two times is discussed. the tooth had been misdiagnosed with a palatal groove or a root fracture, its prognosis had been determined to...

background and aims. with availability of hydrophilic sealers, drying of the canals before endodontic obturation is still a matter of debate. the aim of this study was to compare the apical micro-leakage of ah26, excite dsc, mta fillapex, and zoe sealers in dry and moist root canals. materials and methods. this experimental study was performed on 90 extracted maxillary central incisors. rotary ...

introdouction: variations in root canal morphology pose a challenge for successful endodontic treatment. the root canal anatomy of the maxillary first molar has been often described as three roots with four canals (two mesiobuccal, one distobuccal, and one palatal). the occurrence of two palatal canals in one palatal root is quite rare. this report represents the case of a maxillary first molar...

objectives: pain is an unpleasant outcome of endodontic treatment that can be unbearable to patients. instrumentation techniques may affect the frequency and intensity of post-endodontic pain. this study aimed to compare single visit post endodontic pain using mtwo (niti) rotary and hand k-file instruments. materials and methods: in this randomized controlled trial, 60 teeth with symptomatic ir...

introduction: the purpose of the present study was to quantify and compare the amount of extruded debris from apical foramen after instrumentation of the root canal system with hand and rotary instruments. materials and methods: root canals of forty five fresh extracted single rooted human teeth with mature apexes and less than 15 degree of root curvature were instrumented in group a with stain...

introduction: the exact measurement of the root canal length is of great importance in root canal therapy. although, determination of the root canal length through radiography is the most common method, recently electronic apex locators are being used to determine working length and decrease the number of radiographs. the purpose of this study was to compare the accuracy of an electronic apex l...

conclusions according to the results of this study, the accuracy of the file length in improved digital images showed no significant difference in comparison with the actual file length. materials and methods using an analytical-diagnostic method, an access cavity was prepared in 36 mandibular and maxillary premolar teeth. a file # 15 was inserted into the canal of each tooth until the tip of t...

introduction: the purpose of this in vitro study was to investigate the influence of 5.25% sodium hypochlorite (naocl) and 0.12% chlorhexidine gluconate (chx) use separately and combined as endodontic irrigants on the apical sealing ability of two endodontic sealers. materials and methods: eighty-six extracted maxillary central incisor teeth were used. the teeth were decoronated at the cej, acc...

introduction : dentin removal during root canal instrumentation creates a weaker root structure and increases its potential to fracture. the aim of this in vitro experimental study was to compare fracture resistance of teeth filled with gutta-percha, and resilon using two different techniques. materials and methods: this study was performed on 105 single-canal extracted maxillary incisors. samp...