Description

• Increases efficiency in closing anterior open bites and correcting excessive overbites
• Employs curve of spee to eliminate the need for step downs, step ups and other varieties of activating loops to correct overbites
• Leveling by extrusion (relative intrusion) can now be accomplished by one continuous reverse vector
• Minimizes molar rotation
• Controls incisor torque
Permanent midline etchmarks: three lines for maxillary, one line for mandibular arch