Forces produced by auxiliary torquing springs in the Begg technique.
Different designs of Begg torquing auxiliary have been tested to measure the forces produced at the apex of a tooth. Forces at the tooth surface ranged from 0.4 to 3.3 N, equivalent to 0.1-0.9 N at the root apex.
Department of Children's Dentistry and Orthodontics, University of Birmingham Dental School, St Chad's Queensway, Birmingham.
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D006801:Humans; D007180:Incisor / Q000502:physiology; D008954:Models, Biological; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D016910:Orthodontic Brackets; D009969:Orthodontic Wires; D012399:Rotation; D013314:Stress, Mechanical; D014087:Tooth Movement Techniques / Q000295:instrumentation / Q000379:methods*; D014092:Tooth Root / Q000502:physiology