矯正合併手術治療顎側阻生犬齒－－病例報告

Combined Surgical and Orthodontic Treatment of Palatally Impacted Canines - A Case Report

上頓犬齒在美觀及咬合功能上都佔有重要地位。治療上頓阻生犬齒的臨床病例通常需要選擇適合的手術方式將埋伏齒露出，然後利用適當矯正裝置及施力方向以避免破壞鄰近牙齒的牙根。本病例報告為一名十歲男性患者，臨床及X 光檢查發現上報左個有牌側阻生犬齒及第一小臼齒旋轉現象。經牙用手術將犬齒露出並黏附矯正器，然後利用遠心方向矯正力先將阻生犬齒牙冠拉離側門齒牙根後再向頰側施力將其帶入正常咬合位置。經兩年六個月矯正治療，成功地拉出上顯牌側阻生犬齒，並且獲得良好的牙周狀況及穩定的咬合。Maxillary canines are essential for function and esthetics. Patients with impacted maxillary canine are considered to be more difficult to treat than the average orthodontic patients because successful treatment requires proper surgical technique and orthodontic mechanisms. This case report describes the treatment of a 10-year-old boy with a palatally impacted canine and rotated premolar. Using closed exposure with placement of an attachment, following by distal orthodontic force to bring the canine crown away from the root of lateral incisor, then buccal traction into normal occlusion. Total treatment time was 2 years and six months. We obtained favorable esthetics and stable occlusion.