Surging in Coil Springs
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چکیده
منابع مشابه
Effect of Recycling and Autoclave Sterilization on the Unloading Forces of NiTi Closed-Coil Springs: An In Vitro Study
STATEMENT OF PROBLEM Clinicians use the NiTi coil springs frequently for its appropriate mechanical properties. PURPOSE The aim of this study was to determine the effect of recycling and autoclave sterilization on the unloading forces of NiTi closed coil springs. MATERIALS AND METHOD Fourteen NiTi closed coil spring with the length of 9mm were selected. Each coil was stretched to a peak ext...
متن کاملReactivation of Open Coil Springs: A Novel Intraoral Procedure
Open coil springs are commonly used in orthodontic practice to create space for a palatally or lingually blocked out tooth. However, very often the clinician encounters a situation where the inter-bracket span is very less and the open coil spring is not long enough to open the required space needed for alignment. In such situations, the clinician needs to remove the arch wire and reinserts a l...
متن کاملEffects of Topical Fluoride Prophylactic Agents on the Mechanical Properties of Orthodontic Nickel-titanium Closed Coil Springs and Stainless Steel Closed Coil Springs
The purpose of this study was to investigate the effects of topical fluoride prophylactic agents on the mechanical unloading properties of nickel-titanium (NiTi) and stainless steel (SS) closed coil springs. Spring were stored at 37 ̊C under static load in phosphate buffered saline (PBS) and treated with either neutral sodium fluoride (NaF) or acidulated phosphate fluoride (APF) five days per we...
متن کاملMechanical behavior and clinical application of nickel-titanium closed-coil springs under different stress levels and mechanical loading cycles.
INTRODUCTION The main advantage of superelastic nickel-titanium (NiTi) products is their unique characteristic of force plateaus, which allow for clinically precise control of the force. The aims of this study were to define the mechanical characteristics of several currently available closed-coil retraction springs and to compare these products. METHODS A universal test frame was used to acq...
متن کاملForce characteristics of nickel-titanium open-coil springs.
INTRODUCTION The objective of this study was to quantify the properties of commercially available nickel-titanium open-coil springs. METHODS Eleven springs from 3 manufacturers were tested 5 times over a 12-week period. A universal testing machine was used to measure the force generated when open-coil springs were compressed to half of their original length and then gradually allowed to decom...
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