نتایج جستجو برای: curved canal
تعداد نتایج: 51230 فیلتر نتایج به سال:
Background and Objective: The preparation of the root canal (i.e., cleaning and shaping) is the main step in the endodontic treatment. The nickel-titanium rotary files result in fewer errors during the preparation of curved canals. This study aimed to compare the transportation of Neolix and Reciproc rotary systems in curved canals using cone beam computed tomography (CBCT). Materials and Meth...
Background and Aim: Recent advances in technology have permitted manufacturers to produce endodontic files from NiTi alloy and rotary systems. According to manufacturers, these files maintain original canal shape better than hand files and reduce treatment time. The aim of this study was to compare a new rotary system (Race) with an older one (Profile) in maintaining the original shape of curve...
OBJECTIVES The purpose of this study was to assess the ability of ProTaper Gold (PTG, Dentsply Maillefer) in maintaining the original profile of root canal anatomy. For that, ProTaper Universal (PTU, Dentsply Maillefer) was used as reference techniques for comparison. MATERIALS AND METHODS Twenty simulated curved canals manufactured in clear resin blocks were randomly assigned to 2 groups (n ...
introduction: the exact measurement of the root canal length is of great importance in root canal therapy. although, determination of the root canal length through radiography is the most common method, recently electronic apex locators are being used to determine working length and decrease the number of radiographs. the purpose of this study was to compare the accuracy of an electronic apex l...
Introduction: Successful treatment of root depends on complete elimination of debris and bacteria’s from root canal system and appropriate shaping of canal in obturation canal preparation is the most difficult and time consuming stage during root canal treatment. This stage especially in curved and narrow canals always causes some problems for students, general dentist and specialist. Following...
Background and Aim: Maintaining the original canal path and safety of canal preparation during instrumentation in curved canals have been subjected to many challenges. The aim of this study was to compare several parameters of root canal preparation using flexmaster rotary and hand used Nickel-Titanium instruments. Materials and Methods: In this experimental study, sixty extracted human teeth w...
Comparison of the maintenance of root canal anatomy in severely curved resin blocks using RaCe and Flexmaster rotary systems Dr. S. Khedmat* - Dr. M. Vahdatifar** *- Associate Professor of Endodontics Dept. - Faculty of Dentistry – Tehran University of Medical Sciences. **- Endodontist. Background and Aim: Various rotary systems are available on the market, therefore selection of a proper instr...
the aim of this study was to compare the apical seal of curved canals obturated with resilon/epiphany with gutta-percha/ah plus.thirty-four extracted human mandibular molars with 25-40 degree canal curvature of the mesial root were selected for this study. after preparation, the mesiobuccal canals were obturated with gutta-percha and ah- plus sealer (group g) or resilon and epiphany sealer (gro...
The instrument-centering ability of four Nickel-Titanium instruments in simulated curved root canals
The aim of root canal preparation is to clean and shape the root canal system while maintaining the original configuration. However, traditional hand instruments often failed in achieving these objectives, especially when used in severely curved canals. Over the years, many nickel-titanium rotary instruments have been developed to improve root canal preparation. More flexible files made of nick...
A comparison of transportation and time of canal preparation with stainless steel hand instruments and Ni-Ti rotary systems (In – Vitro) Dr. MR. Sharifian* - Dr. MH. Nekoofar* - Dr. P. Motahari** - Dr. A. Tavakoli*** *-Assistant Professor of Endodontics Dept. – Faculty of Dentistry – Tehran University of Medical Sciences. **- Assistant Professor of Oral and Maxillofacial Pathology Dept. – Facul...
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