심한 총생을 보이는 골격성 Ⅱ급 성인 환자에서 비발치 교정치료 치험례

Non-Extraction Treatment of a Skeletal Class II Adult Patient with Severe Crowding Using Temporary Skeletal Anchorage Devices

In skeletal Class II patients with crowding, decision of extraction is a critical step for treatment planning. Recently, non-extraction treatment has been increased in accordance with advancement of orthodontic devices, widespread use of temporary skeletal anchorage devices (TSADs), and application of appropriate biomechanics. Resolution of crowding can be achieved through interproximal reduction, total distalization, expansion of the dental arches and mandibular incisors proclination. Especially arch form development was observed in arch width of canine and premolar areas after treatment. For treatment of Class II patients with severe crowding, strategic use of arch form development and total distalization can extend the scope of non-extraction treatment with a combination of passive self-ligating brackets, wide archwires and TSADs.