introduction: the purpose of this study was to evaluate the number of distal roots and canals in mandibular first molars and their internal anatomy radiographically within iranian population. materials and methods: a total of 310 distal roots of mandibular first molars were incorporated in this study and evaluated in terms of number of roots and number and types of canals. root canal systems we...

introduction: a variety of mesial and distal projections have been suggested for separating the canals in a multi-canaled root. but there is no general agreement on the best angulation for each tooth. the purpose of this study was to evaluate the x-ray horizontal angle for separating the canals of four-canal first mandibular molars. materials and methods: forty four-canaled mandibular molars we...

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...

objective: the aim of the present study was to histopathologically evaluate follicular tissues of third molars with pericoronal radiolucenciesof less than 2 millimeters. materials and methods: in this descriptive analytic study, 100 impacted third molars with normal follicular spaces were removed and their pericoronaltissues submitted for histopathologic examination. different characteristicsof...

the main objective of endodontic therapy is the thorough mechanical and chemical cleansing of the entire root canal system and its complete obturation with an inert filling material. failure to find and fill a canal contributes toward the failure of endodontic therapy .the root canal anatomy of mandibular first molars is complex. studies of the morphologic structure of root canal systems have d...

background and aims. the surgical removal of the lower third molars is a procedure generally followed by side effects such as postoperative pain. the aim of this study was to evaluate the efficacy of socket irrigation with an anesthetic solution in relieving pain following impacted third molar surgery. materials and methods. thirty-four patients (17 males and 17 females), aged 18-24 years, with...

objective: better understanding of the furcation anatomy may serve to decrease the risk of root perforation. the purpose of this study was to measure the thickness of root walls in the danger zone in mandibular first molars. materials and methods: the roots of 53 extracted human mandibular first molars were sectioned in the horizontal plane 4 mm below the orifice of the mesial and distal root c...

Figure. A transabdominal ultrasound of the pelvis revealing a uterus (arrow) with multiple cystic areas within an enlarged echogenic endometrial cavity (arrowhead). A 15-year-old Hispanic primigravid female at 12 weeks gestation presented to the Emergency Department (ED) complaining of vaginal bleeding for two days. The patient denied any abdominal pain, nausea, vomiting, or fever. On physical ...

autogenous tooth transplantation (att) is a simple and reasonable choice for replacing the missing teeth when a proper donor tooth is available. this report presents a case of successful att of a maxillary right third molar for replacement of mandibular right second molar with a concomitant endodontic-periodontal disease. the mandibular second molar was believed to be hopeless due to a severe d...