systems possess can serve both as havens for bacterial colonization and portals for the extension of endodontic disease. Figure 1 is a cone beam computed tomography (CBCT) rendering of a lateral lesion of endodontic origin. As usual, the portal of exit from this diseased pulpal system is found in the center of the lesion. Many have documented the vast array of anatomical possibilities of pulpal...

Aim of the study is to compare quality apical seal offered by a zinc-eugenol and tricalcium-silicate-based sealer, both used with single-cone or continuous wave condensation technique. Forty central incisors were divided into four groups (n = 10), according two sealers obturation techniques under investigation, their outer surface was isolated nail varnish. After endodontic treatment, samples i...

Apical dendrites and somata of layer V pyramidal neurons were recorded with tight-seal patch electrodes in a slice preparation of rat somatosensory cortex. Recording sites were confirmed by measurements of the electrode location and by staining with biocytin. Dendritic recordings were made along the main trunk of the apical dendrite, usually within layer IV, at distances from 100 to 500 microns...

abstract : inflammatory external root resorption (ierr) is a pathological phenomenon of microbial origin. this stu dy reports a case of external apical inflammatory root resorption of maxillary incisors associated with periradicular lesions in a 22 year old female, which was successfully treated by one-visit root canal therapy (rct). radiographic investigation revealed periapical radiolucencies...

introduction: the aim of this study was to compare the sealing ability of real seal (rs) and gutta-percha (gp). materials and methods: forty nine extracted human maxillary central incisors were used. the coronal part of each tooth was removed; the root canal was prepared using the crown down technique and apical enlargement to rotary file # 40. the specimens were randomly divided in to 3 groups...

background and aims. the aim of this study was to evaluate the sealing ability of kryptonite bone cement (doctors research group inc, southbury, ct, usa) in retrograde cavities by comparing with mineral trioxide aggregate (mta) (dentsply tulsa dental specialties, tulsa, ok, usa), amalgam and intermediate restorative material (irm) (dentsply caulk, milford, de, usa) using ultrasonic retrograde p...

Background: The objective of three-dimensional obturation is to completely seal the canal system from any bacterial ingress from the oral cavity and periradicular tissues. The aim of the study to compare the push-out bond strength of the smart seal C-point obturating system with epiphany resilon obturation system and the gold standard gutta-percha/AH plus system. Materials and Methods: Thirty e...