下顎前突症に対する下顎枝矢状分割術にオトガイ形成術を併用する場合の下顔面部の診断基準とその術後評価

概要

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Sagittal split ramus osteotomy is frequently selected for mandibular excess patients in various set-back procedures of mandible. Some of these patients were not fully satisfied with post-operative profile and full face in spite of the acquirement of good occlusion. The reason is that most clinicians did not give due consideration to the chin position pre-operatively. Sagittal split ramus osteotomy with genioplasty, based on the standards of Ricketts's Golden division, modified esthetic line (Naso-lower lip line) and the imaged mid-face line is commonly used in our departments to offer the patients more post-operative satisfaction. The changes of the post-operative esthetic profile and full face were examined by use of pre-and post-operative standardized photographs of our 16 mandibular excess cases who had sagittal split ramus osteotomy with genioplasty. The post-operative lower third face approximated to the golden proportion vertically and had symmetrical mentum also. The postoperative pogonions of chin advancement cases were almost located on Naso-lower lip line. The pogonions of chin set-back cases approached our target line, but their positions were not completely satisfactory.
九州歯科学会の論文
1995-10-25