Class II correction with the modified sagittal appliance and maxillary second molar extraction.Angle Orthod. 2000 Aug; 70(4):332-8.AO
The aim of this article is to describe the clinical use of the removable sagittal appliance combined with the use of a J-hook headgear. This technique was used to distalize the buccal segments following maxillary second molar extraction in the treatment of a Class II patient with labially positioned maxillary canines. The sagittal appliance was used full-time and the headgear was worn 10 to 12 hours per day. This proved to be an effective method for distalizing the maxillary buccal teeth without flaring of the anterior teeth.