title: Effects of intermaxillary elastic traction on orthodontic tooth movement.
abstract: Intermaxillary elastics are commonly used in orthodontic treatment, yet the exact mechanism by which they effect tooth movement has been unclear. A photoelastic model was produced to stimulate this type of therapy in examples of Class II and III malocclusions. In the open situation, inter-arch activity precipitated occlusal plane rotation; counter clockwise in Class II malocclusion and clockwise in Class III. Comment is made on the force vectors involved when using intermaxillary elastics.
mesh_terms: D003799:Dental Stress Analysis; D004548:Elasticity; D006801:Humans; D008310:Malocclusion / Q000503:physiopathology; D008953:Models, Anatomic; D009968:Orthodontic Appliances, Removable; D012399:Rotation; D013314:Stress, Mechanical; D014087:Tooth Movement Techniques / Q000295:instrumentation; D014092:Tooth Root / Q000502:physiology