ISW for the Treatment of Functional Class III Malocclusion by Crossbite Arch and MEAW Technique in an Adult

ISW (Improved Super-elastic Ti-Ni alloy wire, developed by Tokyo Medical and Dental University) for the treatment of an adult anterior functional crossbite non-extraction case will be discussed. This patient was 37 years old adult male whose chief complaint was irregular dentition. Clinical examination revealed a bilateral Class III molar relationship with anterior functional crossbite, severe crowding over upper anterior teeth and mild crowding over lower anterior with lower midline deviated to the right side. Active treatment included ISW leveling combined with crossbite arch performed to relieve crowding and to correct anterior crossbite. MEAW (Multi-bend Edgewise Archwire) technique for the lower arch combined with Class III intermaxillary elastics (IME) was also performed. Treatment was completed within 25 months and adequate overbite and overjet were accomplished after the active treatment.