منابع مشابه
Performance Evaluation of Two Strategies of “Lining” and “Automated Operation” in Reducing the Water Conveyance and Distribution Losses within the Main Canals, Case Study of Moghan Main Canal
Seepage losses and poor operational activities are the two main source of water losses throughout the agricultural water conveyance and distribution systems in irrigation districts. This study aims to investigate the performances of two strategies of “canal lining” and employing the “Canal Automation” in order to reduce the losses mentioned above. The investigation was carried out on a couple o...
متن کاملCanal Aberration Assessment in Simulated Root Canals: a Comparative Study
AIM The aim of this study was to compare time of preparation and canal aberrations in a simulated root canals after using three different rotary systems: Endostar E5, Endostar E3 and T One File Gold. MATERIALS AND METHODS A total of 90 endodontic training blocks were used in this study and divided into three groups consisting of 30 each (n = 30). Blocks processing was performed by thirty dent...
متن کاملRoot Canal Transportation in Canals Joining together: Assessed by Cone-Beam Computed Tomography
Introduction: Statement of the Problem: Cleaning and shaping are regarded as the most important aspects of root canal therapy and prerequisite for the success of endodontic treatment. Apical transportations can jeopardize the outcome of treatment due to the significant decrease in the sealing ability of root filling material. The purpose of this study was to evaluate transportation in type II c...
متن کاملComparison of Bacterial Leakage between 3 Different Root Canal Obturation Techniques in Oval Shaped Canals
Introduction: The purpose of this study was to evaluate the sealing ability of 3 obturation techniques in oval-shaped canals by bacterial leakage assessment. Methods: Sixty mandibular incisors with oval canals were selected after providing buccolingual and mesiodistal radiographs. The teeth were sectioned at a 10 mm distance from the apex. After instrumentation, the teeth were divided into 3 gr...
متن کاملLedging and blockage of root canals during canal preparation: causes, recognition, prevention, management, and outcomes
Ledge formation, that is the iatrogenically created irregularity in the root canal that impedes access of instruments to the apex, and canal blockage caused by packing dentin chips and/or tissue debris are the least-studied parameters of root canal instrumentation. Variables associated with ledge formation and canal blockage by dentin chips and/or tissue debris are presented. Emphasis is given ...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1859
ISSN: 0016-0032
DOI: 10.1016/0016-0032(59)90319-9