Elham sadat Emadian Razavi

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BACKGROUND The purpose of this study was to assess the surface characterization and frictional resistance between stainless steel brackets and two types of orthodontic wires made of stainless steel and nickel-titanium alloys after immersion in a chlorhexidine-containing prophylactic agent. METHODS Stainless steel orthodontic brackets with either stainless(More)
OBJECTIVES The purpose of this study was to develop and test a new tool for radiographic densitometry by combining periapical films and aluminum step wedge. MATERIALS AND METHODS We reviewed 50 Kodak E-speed intraoral films. An aluminum step wedge consisting of 16 steps was constructed. Each step was 1mm×3m×10mm. The step wedge was exposed to varying(More)
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