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In Vitro Comparison Of Force Decay Between Three Orthodontic Sliding Retraction Methods, Pamela Steiger
In Vitro Comparison Of Force Decay Between Three Orthodontic Sliding Retraction Methods, Pamela Steiger
Student Theses, Dissertations and Capstones
Objective: The purpose of this in vitro study was to determine if there is a difference in force decay between three sliding retraction methods under a standardized force delivery system (200 gm at 25 mm stretch) at 2, 4, 6, and 8 weeks. Background: In order to achieve proper esthetics, occlusion and stability, orthodontic treatment may require extractions. Elastomeric chains, Nickel Titanium (NiTi) coils, and active ligatures are commonly used to close these extraction spaces. Methods: Twenty samples of each retraction method (elastomeric chains, NiTi Coils and active ligatures) were evaluated under standardized conditions (200 gm at 25 mm). The …