Case Report How would you treat this malocclusion? Post-Treatment Case M.S. 25 years, 10 months Treatment Plan The treatment options, including risks/benefits of each, were discussed with the patient. A nonsurgical, non-extraction approach (option #3) was chosen, and a plan created for dental expansion and distalization of the maxillary posterior segments. Treatment Progress A maxillary Memory Expander was used, along with micro-osseous perforations in the area of the maxillary posterior teeth, which would expedite the dental expansion. A total of 10 turns were performed on the expander; these were expressed over a span of six weeks. The patient's maxillary and mandibular arches were then bonded with 0.022"-slot 3M Unitek brackets. The leveling and aligning stage was initiated with 0.016" nickel titanium (NiTi). Archwires progressed from 0.016"* 0.022" NiTi to 0.018"* 0.025" NiTi and then 0.019"* 0.025" coordinated stainless steel wires. Temporary anchorage devices (TADs) were placed between the mandibular canines and first premolars for indirect anchorage in order to prevent excessive proclination of the anterior teeth, as a Twin Force Bite Corrector was used for Class II correction via distalization of the maxillary posterior teeth. Interproximal reduction was conducted in order to address the Bolton discrepancy and reduce further proclination of the mandibular anterior teeth. Final photos 25 years, 10 months 44 PCSO Bulletin Winter 2017