Abstract: Objective: To introduce and evaluate the method to correct skeletal class II malocclusion with mandible retrusion by using retrusive guidance. Methods: Sixteen patients with skeletal class II mandibular retrusion, aged from 16 to 30 were treated. Before treatment, SNA was normal, SNB≤75°, ANB≥5°. Molar relationship was class II. The treatment began with aligning and leveling the upper and lower dental arch, then upper arch was expanded when necessary. Multiloop edgewise arch wire (MEAW) was used to eliminate molar interference, then to extrude lower premolars and tip back upper posterior teeth, so premature contact could be obtained and premolar retrusive guidance was established to guide the mandible forward. Results: Molar relationship of class II was improved to class I. SNB increased by 1.580 on average. Lower anterior teeth flared slightly but not significantly. Conclusion: To some extent, the retrusive guidance can be used to correct skeletal class II malocclusion with mandible retrusion.

Key words: Retrusive guidance, Mandible retrusion, Multiloop edgewise arch wire (MEAW)