The present invention provides improved systems and methods for removably attaching a dental positioning appliance to the dental features of a patient during orthodontic treatment. These appliances function by applying force to specific surfaces of the teeth or dental features to cause directed movement....http://www.google.es/patents/US6705863?utm_source=gb-gplus-sharePatente US6705863 - Attachment devices and methods for a dental appliance
Attachment devices and methods for a dental appliance
