Mandibular Movements in Hemi-mandibulectomy Patients during Injestion and Deglutition

半下颌骨切除术患者注射和吞咽期间的下颌运动

基本信息

批准号：
11671979
负责人：
HIDESHIMA Masayuki
金额：
$ 2.18万
依托单位：
Tokyo Medical and Dental School
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11671979/
关键词：
hemi-mandibulectomy ingestion deglutition mandibular movement 6 degrees of freedom palatal ramp rotational angle parameter テクスチャー前頭面

项目摘要

In mandibulectomy patients who have not undergone surgical reconstruction, the remaining mandibular segment is unstable and often deviated. Its movements have low reproducibility during mastication and deglutition.The purpose of this study was to clarify three-dimensionally the differences in mandibular movements for each of these oral functions in mandibulectomy patients with and without mandibular continuity. Four mandibulectomy subjects (Group I) without mandibular continuity and three subjects (Group II) with mandibular continuity were selected. Their mandibular movements were recorded using a jaw movement tracking device with six degrees of freedom. Each movement was assessed graphically at the virtual incisor point and the rotational angle of the mandible in the frontal, sagittal and horizontal plane was analyzed. Furthermore, in Group I subjects, 4 types of the platal ramps by changing of the width of the occlusal sufaces were applied and analyzed during each functional movement.The findings were as follows ;1. In Group I, the border movements at the virtual incisor point exhibited an irregular and asymmetric envelope deviated to the resected side in the frontal plane, whereas Group II exhibited a smooth and symmetric envelope.2. In Group I, the rotational angle in the frontal plane during border movements, mastication and in the frontal and horizontal plane during deglutition were significantly larger than in Group II.3. The wider the palatal ramps were, the more smooth and wider each chewing stroke was in the frontal plane, whereas the more frequently the mandibular movement was interfered during speech.A comparison among border and all functional movements in mandibulectomy patients revealed characteristic movements in the rotation of the mandible in the frontal plane. It is suggested that the rotational angle of the mandible is a useful parameter for assessment of mandibular movements in mandibulectomy patients.

在未接受手术重建的下颌骨切除患者中，剩余的下颌节段不稳定且经常偏斜。其运动在咀嚼和吞咽过程中的重复性较低。本研究的目的是从三维角度阐明有和没有下颌连续性的下颌切除术患者中每种口腔功能的下颌运动差异。选择四名没有下颌连续性的下颌骨切除受试者（第一组）和三名具有下颌连续性的受试者（第二组）。使用具有六个自由度的下颌运动跟踪装置记录他们的下颌运动。在虚拟切牙点处以图形方式评估每个运动，并分析下颌骨在额状、矢状和水平面上的旋转角度。此外，在第一组受试者中，在每次功能运动期间应用并分析了通过改变咬合面宽度的4种类型的板坡道。结果如下；1．第一组虚拟切牙点的边界运动在额状面中表现出不规则且不对称的包络线，偏向切除侧，而第二组则表现出平滑且对称的包络线。 2．在第一组中，边界运动、咀嚼时额状面的旋转角度以及吞咽时额状面和水平面的旋转角度显着大于第二组.3。腭坡越宽，额状面上的每次咀嚼动作越平滑和越宽，而言语过程中下颌运动受到干扰的频率也越高。下颌切除术患者的边界运动和所有功能运动之间的比较揭示了旋转中的特征性运动下颌骨位于额平面。建议下颌骨旋转角度是评估下颌骨切除术患者下颌运动的有用参数。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Takahashi M.,Hideshima M.,Park I.,Taniguchi H.,Ohyama T.: "Study of mandibular movements in mandibulectomy patients -Border movements and functional movements during Mastication, Deglutition and Speech-"Journal of Medical and Dental Sciences. 46(2). 93-10

Takahashi M.、Hideshima M.、Park I.、Taniguchi H.、Ohyama T.：“下颌切除术患者下颌运动的研究 - 咀嚼、吞咽和言语过程中的边界运动和功能运动 -”医学和牙科科学杂志。

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通讯作者：

朴仁任,江藤美穂,小竹雅人,若林則幸,秀島雅之,大山喬史: "下顎片側遊離端義歯メタルフレームの動的維持力の解析-クラスプデザインの影響-"日本補綴歯科学会誌. 第104回学術大会抄録集. 48 (2000)

Jinin Park、Miho Eto、Masato Kotake、Noriyuki Wakabayashi、Masayuki Hideshima、Takashi Oyama：“下颌单侧自由端义齿金属框架的动态固位力分析 - 卡扣设计的影响” - 日本修复医学会杂志，第 1 期。 104 学术会议摘要48（2000）。