Investigation into Pre and Post Operative Functional Changes of Jaw Movement and Oral Cavity Related Muscles of Maxillofacial Deformaties.

颌面畸形下颌运动和口腔相关肌肉手术前后功能变化的调查。

• 批准号: 04454501
• 负责人: SUGAHARA Toshio
• 金额: $ 4.35万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04454501/
• 关键词: maxillofacial deformity; three dimensional measuring; computer graphics; electromyogram; ultrasonic echogram; relapse

We developed a total measuring system for dento-facial deformities using computer graphics (CG), ultrasonic echogram and electromyogram to evaluate morphological change of the hard and soft tissue after orthognathic surgery, and to clarify functional change of the temporo-mandibular joint (TMJ), tongue and masticatory muscle.1.Development of a three dimensional measuring and display system for maxillofacial region : In addition to the three dimensional reconstruction and display system for CT images already developed by ourselves, we developed an automatic three dimensional measuring, evaluating and display system for facial plaster models 5,6,16,19). This system realizes the automatic and accurate three dimensional measuring, and can display the result with CGs. It has the "Best Fit" function which detects even slight morphological change of the face, and can measure and display morphological changes after surgey or with growth at every part of the face quantitively.2.Development of a … More evaluating method of the functional jaw movement : We developed a system which can get the electromyogram and ultrasonic echogram of the masticatory muscles synchronously at the jaw movement7,17). This kind of system and analysis is very unique, and will be a useful method for the investigation into the functional morphological changes of the muscles.3.Clinical research and improvement of the operation method : We performed various orthognathic surgery for maxillofacial deformities, and observed the morphological and functional changes after surgery 1,8,9,12,13,15,20). Then, we clarified as following ; the condyle of the mandibular protrusion takes slight anterior position in the mandibular fossa 18), the supra- and infrahyoid muscles take part in the relapse after mandibular ramus sagittal split osteotomy 3,4), and the position of the tongue has great influence on the skeletal stability 1,12). And we developed proximal segment positioning system for mandibular ramus sagittal split osteotomy which cause less relapse referring to above data 2). We also developed an artificial TMJ and performed the total replacement of TMJ for the patients who were suffering from masticatory and respiratory disturbance due to TMJ destruction 10,11,14). In addition, we pointed out the characteristics of the facial deformities in the cleft lip and palate patients quantitively using above three dimensional measuring system and showed usefulness of the system 5,16,19). Less

为评价正颌手术后硬、软组织的形态变化，阐明颞下颌关节、舌和咀嚼肌的功能变化，我们开发了一套完整的颌面部畸形测量系统。1.颌面部三维测量与显示系统的开发：在已有的CT图像三维重建与显示系统的基础上，开发了面部石膏模型的自动三维测量、评价与显示系统。该系统实现了三维测量的自动化、精确化，并能用CGS显示测量结果。它具有最佳匹配功能，可以检测面部微小的形态变化，并能定量测量和显示手术后或面部每一部分的生长情况。2.…的研制功能性颌骨运动的进一步评价方法：我们研制了一套在颌骨运动时同时获得咀嚼肌肌电信号和超声声像图的系统。3.手术方法的临床研究和改进：对颌面部畸形进行各种正颌外科手术，观察术后的形态和功能变化(1、8、9、12、13、15、20)。结果表明：下颌前突在下颌窝内的位置偏前，舌上肌和舌骨下肌参与下颌升支矢状劈开截骨术后的复发，舌的位置对下颌骨的稳定性有很大影响。参考上述资料，我们开发了下颌升支矢状劈开截骨术的近端节段定位系统，其复发率较低。我们还研制了人工TMJ，并为因TMJ破坏而遭受咀嚼和呼吸障碍的患者进行了TMJ的全置换(10，11，14)。此外，我们还利用上述三维测量系统定量地指出了唇腭裂患者面部畸形的特点，并展示了该系统的实用性。较少

项目成果

菅原利夫 他: "Webster法で再建した下唇癌の1症例" 日本口腔外科学会雑誌. 39. 296-298 (1993)

Toshio Sukawara 等：“使用韦伯斯特法重建下唇癌的病例”日本口腔颌面外科学会杂志 39. 296-298 (1993)。

菅原利夫 他: "斜顔裂の再建例" 日本口腔科学会雑誌. 43. 562-565 (1993)

Toshio Sukawara 等：“斜面裂重建实例”日本口腔医学会杂志 43. 562-565 (1993)。

川本知明 他: "超音波診断に筋電図を併用した下顎運動検査法の考案" 第62回日本超音波医学会研究会発表会論文集. 467-468 (1993)

Tomoaki Kawamoto 等人：“使用肌电图结合超声诊断开发下颌运动测试方法”第 62 届日本超声医学研究会议论文集 467-468 (1993)。

"Skeletal relapse following sagittal-split osteotomy for correction oh mandibular prognathism (1)" Jpn J Oral Maxillofac Surg-38. 1558-1563 (1992)

“下颌前突矫正矢状劈开截骨术后骨骼复发（1）”Jpn J Oral Maxillofac Surg-38。

"Skeletal relapse following sagittal-split osteotomy for correction oh mandibular prognathism (2)" Jpn J Oral Maxillofac Surg-38. 1764-1770 (1992)

“下颌前突矫正矢状劈开截骨术后骨骼复发（2）”Jpn J Oral Maxillofac Surg-38。