Rapid maxillary expansion with corticotomy

上顎骨 擴張術은 1860년 Dr. Angell에 의해 紹介되었다. 그후 열성장된 上顎骨의 擴張을 위해 paratal split osteotomy 등의 外科的 處置가 紹介되어 왔다. 그러나 이러한 處置는 上顎骨 주위 골들의 抵抗 때문에 큰 役割을 하지 못했다. 이러한 抵抗을 克服하기 위해 corticotomy 또는 midpalatal osteomy 등이 紹介되어왔는 바, 저자등은 이러한 術式에 의하여 上顎骨 擴張術의 좋은 結果들을 經驗한 바 이에 紹介하는 바이다.

Maxillary expansion has been introduced by Dr. Angell in 1860. Since then, this technique has been performed very usefully in orthodontic field to correct transverse discrepancies. The widening of true apical base of Maxilla in association with palatal split would be considered the most effective and stable way to treat constricted upper jaw and gain available spaces for crowding. Also there are lots of changes in naso-maxillary complex to palatal spliting, which are prerequisite to be understood for clinicians. The responses of surrounding bones and tissues to maxillary expansion were revealed by numerous studies performed by Hass, Isaacson, Murphy, Wertz and so on. But the split of palate in adult may not occur because of skeletal resistances of surrounding bones. Corticotomy or midpalatal osteomy is very useful surgical aid to get palatal split in adult by reducing these resistances. So we are going to discuss about the biomechanical responses and main resistances to palatal split and introduces corticotomy as an excellent surgical aid for maxillary expansion.