introduction: an overlooked but important part of successful root canal treatment is a straight-line access (sla). the purpose of this in vitro study was to compare the efficacy of introfile and prerace rotary instruments with gates glidden (gg) drills in gaining sla by cone-beam computed tomography (cbct). methods and materials: a total of forty five extracted mandibular first molars were sele...

one of the main causes of endodontic treatment failure is the clinician’s inability to localize all the root canals. due to the complex anatomy of the root canal system, missed canals are not uncommon. there are several strategies to decrease the possibility of missed root canals starting with good pre-operative radiographies. in order to overcome the limitations of conventional radiographies, ...

introduction: the conventional method of teaching endodontics has some drawbacks. due to the small size of the oral cavity, students cannot closely observe the clinical procedure. use of new teaching modalities such as the intraoral camera may obviate this problem. this study assessed the effect of video-assisted clinical instruction in dentistry (vacid) on dental student’s knowledge and perfor...

BACKGROUND AND OBJECTIVES The aim of the study was to determine the effect of two access cavity designs on the peri-cervical dentin thickness before and after instrumentation using cone beam computed tomography (CBCT). MATERIALS AND METHODS Sixty mandibular anterior teeth were divided into two groups of thirty teeth each: Group I: conventional access cavity preparation, where access was prepa...

purpose : to report a rare case of isolated orbital mucocele after trauma case report : a 45-year-old man presented with swelling in the left orbital region. the only significant event in his medical history was trauma which occurred 25 years previously during the iran-iraq war. computed tomography revealed a left medial intraorbital cystic mass lesion. the cystic mass was completely removed th...

Highand low-speed rotary dental handpieces have been used for a long time in restorative dentistry for cavity preparation. However, problems inherent to conventional burs, such as noise, heat and vibration, have led to the development of new dental burs, such as the chemical vapor deposition diamond-coated bur. Its advantages are many, such as less noise, less pain for the patient, precise cutt...