BACKGROUND The aim of the study is to evaluate the resistance vertical root fracture (VRF) of mineral trioxide aggregate (MTA) filled-immature permanent roots by using three different vehicles. MATERIAL AND METHODS Forty-extracted human single-rooted mandibular premolars were selected and the root length was standardized to the length of 9 mm. For simulation of immature tooth apices, peeso re...

Due to fracture interference, not all perforations can be fractured, resulting in 20% of fractures contributing 80% the total production. The extraction oil and gas also reduces production, necessitating refracturing. In this study, finite element method was used simulate multiple fracturing simultaneously stress field distribution then extracted applied a new geological model. This paper expla...

The cementodentinal tear is rarely detected by noninvasive procedures owing to its clinical picture simulating a root fracture or a periodontal or endodontic lesion. We present a case of complex cementodentinal tears in a 79-year-old woman who presented a repeated swelling at the labial mucosa of the left maxillary central incisor for 6 months. Periapical radiographs demonstrated a vertical rad...

Fractured endodontically treated teeth below the gingival margin are often extracted and restored with implants or other prosthetic treatment options in many cases. However, dentists should carefully consider other treatment options for these teeth before deciding on extraction due to the risk of vertical and horizontal bone resorption subsequent to extraction as this resorption will result in ...

background & aim:oxidative stresses caused by free radicals are known to promote many diseases such as inflammation and cancer; therefore, any plant product that can inhibit free radical production can play an important role in preventing diseases. we aimed to compare the fracture rate and the scavenging activity of free radicals, and the antioxidant composition of rolb-transformed hairy root o...