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Influence of Inserting Bite Plane on the Position of Mandibular Condyle

插入咬合面对下颌髁突位置的影响

基本信息

批准号：
11470414
负责人：
NAGASHIMA Tadashi
金额：
$ 7.68万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

The bite plane therapy has been accepted to be useful for treatment of the patients with stomatognathic disorders. There are many studies comparing EMG activity between with and without wearing a bite plane, but few studies comparing jaw and condylar movements between these two conditions. In order to analyze condylar movements during maximal voluntary clenching with and without wearing bite plane, following experiments were performed.Five dentate subjects who had no signs of muscular and craniomandibular disorders participated in this experiment. A full-arch bite plane with an interincisal distance of 5 mm was fabricated for each subject. 5 types of occlusal contacts were tested in this experiments by grinding the occlusal surface of bite plane. Jaw and condylar movements were recorded with a 6-degree-of-freedom measuring device during with and without bite plane.During maximal voluntary clenching without wearing the bite plane, the condylar movement was 0.2 〜 0.6 mm. When wearing the bite plane, it was 0.4 〜 1.7 mm with full arch occlusal contact.The condylar movements during biting the bite plane with full arch occlusal contacts were smaller degree than during biting other types of the bite planes, and it is more nearly comparable to the distance without wearing bite plane.From these results, we concluded that wearing the full-arch bite plane is useful as a therapy for some cases of occlusal disorders.

咬合平面疗法已被认为可用于治疗患有口颌疾病的患者。有许多研究比较佩戴和不佩戴咬合板之间的肌电图活动，但很少有研究比较这两种情况下下颌和髁突的运动。为了分析在佩戴和不佩戴咬合平面的情况下最大自愿咬紧过程中髁突的运动，进行了以下实验。五名没有肌肉和颅下颌疾病迹象的齿状受试者参与了该实验。为每位受试者制作切缝距离为 5 mm 的全牙弓咬合面。本实验通过磨削咬合面的咬合面，测试了5种类型的咬合接触。用六自由度测量装置记录佩戴和不佩戴咬合面时下颌和髁突的运动。在不佩戴咬合面的情况下最大自愿咬紧牙关时，髁突运动为0.2 〜 0.6 mm。佩戴全牙弓咬合面时，该距离为 0.4 〜 1.7 mm。咬合全牙弓咬合面时，髁突移动程度小于咬其他类型的咬合面时的距离，与不佩戴咬合面时的距离更接近。从这些结果中，我们得出结论，佩戴全牙弓咬合面可用于治疗某些咬合疾病。