Flexibility of K3 and ProTaper universal instruments
نویسندگان
چکیده
منابع مشابه
Flexibility of K3 and ProTaper universal instruments.
This study used a mechanical test to evaluate the flexibility of instruments from the K3 (conicity 0.04) and the ProTaper Universal systems when they were new and after 5 uses in simulated canals. Five sets of instruments of each system were tested: K3 (15, 20, 25, 30, 35, 40 and 45) and ProTaper Universal (S1, S2, F1, F2, F3, F4 and F5). Each set of instruments was used to prepare a simulated ...
متن کاملAnalysis of Surface Characteristics of ProTaper Universal and ProTaper Next Instruments by Scanning Electron Microscopy
BACKGROUND Many new rotary files systems have been introduced, however, limited research has been conducted related to the surface irregularities of these files and if these have any effects on the files themselves. Hence, the aim of the present study was to analyze surface irregularities of the ProTaper® Universal rotary files (PTU) and the ProTaper Next™ rotary files (PTN) before and after in...
متن کاملEffects of ProTaper Universal, ProTaper Next, and HyFlex instruments on crack formation in dentin.
INTRODUCTION The aim of the present study was to investigate the incidence of cracks in root dentin after root canal preparation with ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland), HyFlex (Coltene-Whaledent, Allstetten, Switzerland), and ProTaper Universal (Dentsply Maillefer) rotary instruments. METHODS One-hundred mandibular premolars were selected. Twenty-five teeth were left...
متن کاملDifferences in cyclic fatigue resistance between ProTaper Next and ProTaper Universal instruments at different levels.
INTRODUCTION New designs and alloys have been developed to increase cyclic fatigue (CF) resistance of rotary files. The aim of this study was to compare CF resistance of ProTaper Universal (PTU; Dentsply Tulsa Dental, Tulsa, OK) and ProTaper Next (PTN, Dentsply Tulsa Dental) instruments at different points of curvature. METHODS A total of 420 files (240 PTU, S1, F1, F2, and F3 and 180 PTN, X1...
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ژورنال
عنوان ژورنال: Brazilian Dental Journal
سال: 2011
ISSN: 0103-6440
DOI: 10.1590/s0103-64402011000300007