Scissors-bite correction on second molar with a dragon helix appliance.
Many efforts have been made to correct scissors-bite and establish proper molar interdigitation for prosthetic or orthodontic treatment. The critical procedures for scissors-bite correction are intruding and palatally tipping the involved tooth when it is both extruded and buccally flared. Conventional approaches give rise to problems such as repetitive bonding failure and loss of anchorage. A newly designed spring, the dragon helix appliance, is used with an indirect skeletal anchorage system to correct scissors-bite. This spring provides effective tooth movement and the convenience of a simple and small design. We report a successful treatment with the dragon helix.
Yun
Sung Won
SW
Division of Orthodontics, Department of Dentistry, Ewha Woman's University, Seoul, Korea.
Lim
Won Hee
WH
Chong
Deuck Ryong
DR
Chun
Youn Sic
YS
D000293:Adolescent; D005260:Female; D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008963:Molar / Q000503:physiopathology*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D014087:Tooth Movement Techniques / Q000295:instrumentation*