The aim of this study is to investigate the effect of different instrument modifications on the customized osteotomy of the lateral nasal wall in Le Fort I surgery, focusing on the level of lateral nasal wall fractures and the separation pattern of the pterygomaxillary junction. The primary hypothesis is blade osteotome is useful and facilitate the fracture line in ideal level both for lateral nasal wall and the pterygomaxillary junction.
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lateral nasal wall fracture type
Timeframe: 6 months