粘膜下口蓋裂を伴った骨格性3級に対する上下顎移動術の1例

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  • Two-Jaw Surgery for Mandibular Prognathism in a Patient with Hypernasality

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A 19-year-old patient with hypernasality was reported before and after two-jaw surgery to evaluate the effects of the surgery on her speech. Cephalometric analysis was made of the oropharyngeal and hypopharyngeal areas, in addition to assessing her articulation and velopharyngeal function by nasopharyngeal fiberscopy. Results of the analysis indicated that maxillary advancement plus mandibular setback caused no adverse effect on articulation, or on velopharyngeal function, whereas the anteroposterior width of the oropharyngeal orifice increased, and hypopharynx cross-sectional areas decreased.

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