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中华口腔医学研究杂志(电子版) ›› 2010, Vol. 4 ›› Issue (02) : 126 -132. doi: 10.3877/cma.j.issn.1674-1366.2010.02.004

基础研究

正常颞下颌关节音与其相应下颌位置的研究
林雪峰1,(), 吴夏怡1   
  1. 1.510055 广州,中山大学光华口腔医学院·附属口腔医院·口腔医学研究所
  • 收稿日期:2009-09-20 出版日期:2010-04-01
  • 通信作者: 林雪峰

The study of temporomandibular joint sounds and corresponding mandible position in youth with individual normal occlusion

Xue-feng LIN1,(), Xia-yi WU1   

  1. 1.Guanghua School of Stomatology,Institute of Stomatological Research, Sun Yat-sen University, Guangzhou 510055, China
  • Received:2009-09-20 Published:2010-04-01
  • Corresponding author: Xue-feng LIN
引用本文:

林雪峰, 吴夏怡. 正常颞下颌关节音与其相应下颌位置的研究[J/OL]. 中华口腔医学研究杂志(电子版), 2010, 4(02): 126-132.

Xue-feng LIN, Xia-yi WU. The study of temporomandibular joint sounds and corresponding mandible position in youth with individual normal occlusion[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(02): 126-132.

目的

研究正常颞下颌关节音的特点及关节音产生时相应下颌位置,探讨正常关节音产生的机理。

方法

按照纳入标准从中山大学光华口腔医学院选取26 名个别正常青年人,应用BioPAK 口颌分析系统(BioJVA 颞下颌关节振动分析仪和BioEGN 下颌运动轨迹描记仪)对最大开闭口运动时产生的关节音与产生关节音时下颌所处运动轨迹中的相应位置进行记录分析。

结果

个别正常青年人的颞下颌关节音频谱图呈单峰,振幅和频率四分数位区间分别为0.40 ~1.08 Pa 和48 ~91 Hz,左右侧颞下颌音振幅和频率的差异无统计学意义。 个别正常受试者行开闭口运动产生关节音时下颌多处于开口阶段,相应下颌位置比值为74% ± 15%,显示正常颞下颌关节音产生于下颌运动矢状面开口轨迹距牙尖交错位74% ± 15%最大开口距离处。

结论

正常颞下颌关节音振幅和频率呈偏态分布,双侧无明显差异,正常颞下颌关节音产生时下颌处于开口运动轨迹的中下段。

Objective

To analyze the characteristics of temporomandibular joint (TMJ)sounds an d the corresponding mandibular position in young subjects with individual normal occlusion.

Methods

26 young healthy volunteers with individual normal occlusion from Guanghua School of Stomatology were included. The TMJ sounds and the mandibular positions of subjects were recorded with BioPAK (BioJVA and BioEGN) system by means of electrovibratograghy and electrognathography respectively.

Results

The inter-quartile range of the amplitude of TMJ sounds was between 0.40 ~1.08 Pa. The inter-quartile range of the frequency of TMJ sounds was between 48 ~91 Hz. No significant difference was found between bilateral TMJs for neither the amplitude nor the frequency of TMJ sounds. The mandibular position (indicated by mandibular incisors' tracing path in sagittal plane) was in the 74% ± 15% portion of maximal displacement from ICP in the mandibular opening path when the normal TMJ sounds appeared.

Conclusions

In youth with individual normal occlusion, the amplitude and frequency of TMJ sounds follows a skewed distribution. The mandibular position is in the middle or lower portion of the mandibular opening path when TMJ sounds appear.

图1 个别正常颞下颌关节音频谱曲线 曲线的高度表示波谱能量占每个频率的直接百分比,波形呈单峰
表1 颞下颌关节音的振幅分布(Pa,n=26)
表2 左右侧颞下颌关节音振幅差异的配对t 检验(Pa,n=26)
表3 颞下颌关节音的频率分布(Hz,n=26)
表4 左右侧颞下颌关节音频率差异的配对t 检验(Hz,n=26)
表5 颞下颌关节音的相应下颌位置f(%,n=26)
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