Orthodontic treatment model M3005R Demonstrates malocclusion with multiple orthodontic treatments including wire,bracket,elastic O-ring power chain, tubes on molars and mini screw anchors. Demonstrates closing the gap between canines and premolars; Good for orthodontic demonstration and clinic decoration. Hinged upper and lower jaw. Red acrylic base and white teeth. For students and patients, the explanation of one model is clearer than a thousand words!