- 期刊
以正顎手術治療第二類異常咬合的長顏面徵群－病例報告
Orthognathic Surgery for Class Ⅱ Occlusion Long Face Syndrome- A Case Report
摘要
長顔面徵群(long face syndrome)乃是顎骨發育異常所致，特别是因為上顎骨在垂直方面的過度發育(excessive development)，其主要特徵是下颜面高度(lower facial height)增加，而使患者的颜面外觀不協調。臨床上對於長颜面徵群的處理方法，大部份需要藉著矯正治療配合正顎手術的施行，才能達到理想的結果。在這篇報告中，我們對一26歲的女性患者施行正顎手術。手術的方法包括了LeFort Ⅰ osteotomy of maxilla, bilateral sagittal splitting osteotomy of ramus和anterior subapical osteotomy of mandible。術後並對上顎軟組織及硬組織的變化也做比較。結果顯示：LeFortⅠ osteotomy of maxilla術後軟硬組織（上唇及上顎門齒）垂直方向移動的關係是2:1；上唇的四個landmarks (LS, SLS, Sn, Sto)和硬組織的垂直方向變化關係是0.4, 0.2, 0.2, 0.6；鼻唇交角(naso labial angle)角度增加；softtissue chin (PgS)和hard tissue chin (Pg)變化的關係是1:2。
並列摘要
Long face syndrome is the result of abnormal development of the facial bones, especially caused by the excessive development of maxilla in vertical dimension. The major characters of long face syndrome are the increasing of lower facial height and results in the disharmony of the patient's maxillofacial profile. Orthognathic surgery had been performed on a 26-year-old female patient which included (1) LeFort Ⅰ osteotomy of maxilla (2) anterior subapical osteotomy of mandible and (3) bilateral sagittal splitting osteotomy of ramus. Postoperatively, the relationship between soft-tissue change and hard-tissue change of maxilla were compared by cephalometry. After the interval of 6 months of surgery, the ratio of soft-tissue change to hard-tissue change (upper lip to upper incisors) in maxilla is 2:1 vertically; the ratio of LS, SLS, Sn, Sto in maxilla is 0.4, 0.2, 0.2, 0.6 vertically; the degree of naso-labial angle was improved prominently, the ratio of soft-tissue chin (PgS)to hard-tissue chin (Pg) is 1:2.