日本顎変形症学会雑誌
Online ISSN : 1884-5045
Print ISSN : 0916-7048
ISSN-L : 0916-7048
17 巻, 3 号
選択された号の論文の5件中1~5を表示しています
  • 松原 大樹, 寺田 員人, 中村 康雄, 林 豊彦, 森嶋 繁生, 齋藤 功
    2007 年 17 巻 3 号 p. 189-199
    発行日: 2007/08/15
    公開日: 2011/02/09
    ジャーナル フリー
    Aim: The purpose of this study was to introduce our newly developed three-dimensional system of analyzing the lip movement synchronized with mandibular movement and to analyze the relationships between lip movement and mandibular movement before and after orthognathic surgery in skeletal Class III patients using this system.
    Materials and Methods: The subjects comprised 8 skeletal Class III patients who had undergone bilateral sagittal splitting mandibular ramus osteotomy and 8 persons with individual normal occlusion. Materials consisted of three-dimensional movement values obtained by a motion capture system equipped with two infrared CCD cameras, and three-dimensional static values measured by the three-dimensional optical laser scanner. Four landmarks affixed on the soft tissue around the mouth and four other landmarks to estimate the lower incisor movement were measured for 30 seconds during habitual mouth opening and closing movement. The relationships between lip movement and the lower incisor movement were compared between the pre-and post-operation and the normal groups.
    Results: The system developed in this study enabled three-dimensional measurement of lip and lower incisor movements during habitual mouth opening and closing at the same time. The landmarks on the lower lip, the right and left angles of the mouth and the chin point moved further in the pre-operation group than those in the post-operation and normal groups during habitual mouth opening and closing. Three-dimensional movement values after surgery showed a tendency to be close to those in the normal group.
    Conclusion: The present system may be useful for accurately measuring the movement of the lip synchronized with the lower incisor movement. Post-operative smooth movement of the soft tissue around the mouth suggests that tension of the muscles between the hard and soft tissues observed before surgery might decrease after surgery.
  • 比地岡 浩志, 野添 悦郎, 下松 孝太, 石畑 清秀, 大河内 孝子, 中村 典史
    2007 年 17 巻 3 号 p. 200-205
    発行日: 2007/08/15
    公開日: 2011/02/09
    ジャーナル フリー
    We performed a clinicostatistical observation of 291 patients who underwent orthognathic surgery between 1981 and 2004 in the Department of Oral Maxillofacial Surgery, Kagoshima University Hospital. There were 98 male and 193 female patients with an average age of 20.8 years old.
    The results were as follows.
    1. Most of the patients (83.5%) demonstrated mandibular prognathism with/without other deformities of the jaw.
    2. Sagittal splitting ramus osteotomy (SSRO) was performed in 209 cases (71.8%), and was the most frequently performed surgical procedure.
    3. The average surgical duration was 5 hours and 31 minutes and blood loss was 484g during SSRO.
    4. Bone fixation in SSRO varied as follows: Sapphire screws were mostly used in the beginning, followed by stainless steel screws.PLLA screws were mainly used in recent years.
    5. There was no significant difference in surgical duration, blood loss and maxillary forward advancement during Le Fort I osteotomy between cases with and without cleft lip and/or palate.
  • Surgically Assisted Maxillary Expansionの応用
    小野 和宏, 小林 正治, 齊藤 力, 福田 純一, 高木 律男, 朝日藤 寿一, 竹山 雅規, 齋藤 功
    2007 年 17 巻 3 号 p. 206-212
    発行日: 2007/08/15
    公開日: 2011/02/09
    ジャーナル フリー
    Some skeletally mature patients with cleft lip and palate show severe maxillary transverse contraction and posterior crossbite. This study presents the experiences with surgically assisted maxillary expansion based on the theory of distraction osteogenesis in 8 patients. The surgical technique was basically a subtotal Le Fort I osteotomy. Expansion of the maxilla was done at 0.4-1.0mm a day by using Hyrax-type and Haas-type appliances after a latency period of 4.5 days on average. The duration of consolidation period was an average of 94 days and bone formation was clearly observed in radiographic views of the maxilla following 3 months of expansion. All patients were treated successfully without any complications such as fistula formation at the palate. This procedure may be very helpful in improving a severely contracted maxillary dental arch in cleft lip and palate patients.
  • 上顎前方移動時の位置決めにフェイスボウを用いて
    影山 康子, 岡藤 範正, 上松 節子, 上松 隆司, 栗原 三郎
    2007 年 17 巻 3 号 p. 213-220
    発行日: 2007/08/15
    公開日: 2011/02/09
    ジャーナル フリー
    We present a case report of remarkable skeletal mandibular protrusion operated with Le Fort I osteotomy and sagittal splitting ramus osteotomy, the so-called twojaw surgery. In Le Fort I osteotomy, positioning of the maxillary bone was performed using a face bow transfer method. As a result of the osteotomy, the maxillary bone segment was fixed at the planned position. The surgical procedures achieved an improvement in the facial form and the occlusion. In this case, an absorbable bone fixation plate, FIXSORB®MX, was employed and it could be as useful for two-jaw surgery as a titanium plate under equal conditions. The progress after the operation was evaluated. Although skeletal changes were merely observed at one year after operation, the dental and skeletal stability was well maintained for three years after the operation.
  • 廣瀬 美帆, 吉田 建美
    2007 年 17 巻 3 号 p. 221-228
    発行日: 2007/08/15
    公開日: 2011/02/09
    ジャーナル フリー
    For orthodontists, it is important to maintain the stability of occlusion and soft tissue after orthodontic treatment. This article presents a patient orthodontic retreated with glossectomy 13 years after orthognathic surgery. The patient was a 33-year-old female. She had undergone orthognathic surgery at 19 years old.Although glossectomy had been recommended because of macroglossia tendency at that time, it was not per-formed. Thirteen years after orthognathic surgery, unstable occlusion and exposure of lower incisor tooth roots developed. The countermeasure against this condition, orthodontic treatment with glossectomy and gingival transplant, was taken, as she was willing to accept any necessary treatment. As the re-treatment result was good, we report it.
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