Kiamars Honardar

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INTRODUCTION Root canal preparation is an important process in endodontic therapy. Nickel-titanium (NiTi) rotary file system can be used in single length technique (simultaneous technique) without early coronal enlargement, as well as in crown-down method. The purpose of this in vitro study was to compare single length with crown-down methods' shaping(More)
OBJECTIVES The aim of this study was to compare apical sealing ability of alpha and beta phases of gutta-percha by means of bacterial leakage model. MATERIALS AND METHODS Fifty single-rooted human premolars were selected. The root canals were prepared with Mtwo rotary instruments up to apical #35.04. Forty teeth were randomly divided into two groups (n=(More)
OBJECTIVE Use of rotary Nickel-Titanium (NiTi) instruments for endodontic preparation has introduced a new era in endodontic practice, but this issue has undergone dramatic modifications in order to achieve improved shaping abilities. Cone-beam computed tomography (CBCT) has made it possible to accurately evaluate geometrical changes following canal(More)
In this paper, we develop a distributed adaptive energy-efficient radio resource allocation based on game theory in orthogonal frequency division multiplexing (OFDM) cellular systems. It is demonstrated that game theory can be used as an effective tool to study resource allocation in wireless networks with quality-of-service (QoS) constraints. Since power(More)
In this paper, we develop a distributed adaptive power allocation based on game theory in the orthogonal frequency division multiplexing (OFDM) cellular systems. In this work, power control problem is solved based on the idea of the Nash equilibrium (NE) from non-cooperative game. In this regard, a utility function is proposed that each user seeks to select(More)
INTRODUCTION The aim of this study was to evaluate the accuracy of two electronic apex locators (Smarpex and NovApex) in detecting apical perforation. MATERIALS AND METHODS After access cavity preparations, the working length was determined by the first examiner before and after perforation with a stereomicroscope by introducing a K-file size 10 into the(More)
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