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作者报道32例上颌和腭部矢状骨折,占上颌骨折的15％。大约有一半是单纯的腭—牙槽骨折,另一半为LeFort骨折。后者主要是一侧Ⅱ型另一侧Ⅲ型或一侧Ⅲ型另一侧Ⅳ型(波及一侧额骨)。2侧为单侧Ⅲ型其骨折片移位和咬(牙合)错乱都很轻。这种矢状骨折仅用颌间牵引固定,可能引起上颌骨折片旋转,使上牙腭侧牙尖与下牙不接触。如果仅观察颊尖,这种咬(牙合)错乱可能被忽略(图1)。
The authors reported 32 cases of maxillary and palatal sagittal fractures, accounting for 15% of maxillary fractures. About half are simple palatal-alveolar fractures and the other half are LeFort fractures. The latter is mainly on the side of the other side of type Ⅱ Ⅲ or type Ⅲ on the other side of the type Ⅳ (spread to one side of the frontal bone). 2 side of the unilateral type Ⅲ fracture displacement and bite (occlusion) disorders are very light. This sagittal fractures only fixed by intermaxillary traction may cause rotation of the maxillary fragments, the upper teeth palatal cusp and the lower teeth do not touch. This bite occlusion may be overlooked if only the buccal cusp is observed (Figure 1).