Occlusal dysesthesia in Prosthodontic Dentistzy

口腔修复中的咬合感觉迟钝

• 批准号: 13672026
• 负责人: BABA Kazuyoshi
• 金额: $ 2.18万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13672026/
• 关键词: Occlusal Dysesthesia; Occlusion; Dentures; Propioceptor; 感覚異常

In order to conduct somatosensory and somatomotor testing on patients to assess whether a true ocriusal dysesthesia exists, systematic evaluation system was developed, where occlusal sensation was determined by three peripheral neural inputs: periodontal ligament mechanoreceptors of the teeth (2Foil test), TMJmechanoreceptors (TMJ test) and muscle spindle receptors in the jaw muscles (Stick test). Two groups, which included normal subject group (n28) and ooclusal dysestihesia patient group (nz7), underwent these 3 tests and the results revealed that there was no significant difference in the sensory ability between these two groups except for the Foil test. The focus of the Foil test was to test the ability of the periodontal ligament mechanoreceptor to discriminate the dimensions at two different degrees of foil thickness placed between upper and lower incisors. The summary of the results (averaged minimum discnmination threshold levels for two groups) are described below.n Mean SD Mm MaxNormal 25 13.44 10.239 4 34Ocnlusal Dysesthesia 6 11.00 13.372 4 38 (μm)These results revealed that the ocdusal dysesthesia patient group exhibited better (thinner) discrimination ability than the normal group. Of course, other receptors in addition to periodontal mechanoreceptors such as muscle spindles or TMJ receptors contribute to the sum of data used by the brain to determine where the jaw is positioned in space. Given these note these studyresults suggest that the problem of these patients are related to actual better sensitivity of the periodontal mechanoreceptor. Although there appears to be a trend toward psychological issues in these patients, it is likely that physical objective findings also explain some of the symptoms.

为了对患者进行躯体感觉和躯体运动测试以评估是否存在真正的咬合感觉障碍，开发了系统的评估系统，其中咬合感觉由三种外周神经输入确定：牙齿的牙周膜机械感受器（2箔试验）、TMJ机械感受器（TMJ试验）和颌肌的肌梭感受器（Stick试验）。两组，包括正常受试者组（n28）和卵母细胞感觉障碍患者组（nz 7），进行这3种测试，结果显示，除了箔测试之外，这两组之间的感觉能力没有显著差异。箔测试的重点是测试牙周膜机械感受器在上下切牙之间放置的两种不同程度的箔厚度下区分尺寸的能力。结果（两组的平均最小辨别阈值水平）总结如下：n平均SD Mm最大正常值25 13.44 10.239 4 34眼感觉障碍6 11.00 13.372 4 38（μm）这些结果表明眼感觉障碍患者组比正常组表现出更好（更薄）的辨别能力。当然，除了牙周机械感受器之外的其他感受器，如肌梭或颞下颌关节感受器，也有助于大脑确定下颌在空间中的位置的数据总和。这些研究结果表明，这些患者的问题与牙周机械感受器的实际更好的敏感性有关。虽然这些患者似乎有心理问题的趋势，但客观的身体检查结果也可能解释一些症状。