前伸咬合对可复性关节盘移位患者关节振动的作用

发布时间：2018-04-16 04:36

本文选题：颞下颌关节 + 前伸咬合　；参考：《口腔医学研究》2017年05期

【摘要】：目的:研究前伸咬合对可复性关节盘移位患者颞下颌关节振动的影响。方法:30例可复性关节盘前移位者分别作正常开闭口运动(正中颌位开始的最大开闭口运动)以及前伸开闭口运动(下颌前伸至切对切开始的最大开闭口运动),运用关节振动分析仪收集2种下颌运动方式下的关节振动信号,结合Joint-3D技术记录并分析开口度、开口型的变化,并对数据结果进行统计分析。结果:前伸开闭口组关节振动的振动总能量TI、频率小于300Hz的振动能量A、频率大于300Hz的振动能量B、峰振幅PA明显小于正中颌位最大开闭口运动组(P0.01)。2种运动产生振动的峰频率PF以及频率大于300Hz的振动能量与频率小于300 Hz的振动能量之比B/A没有差异。2种运动方式下,开口度无明显变化,而37.4%的可复性关节盘移位患者前伸开闭口的下颌偏离中线距离比正常开闭口运动小。结论:下颌前伸至切对切可降低可复性关节盘移位患者的颞下颌关节区振动的强度但不改变其频率特性,部分患者可以改善开口型。本研究从定量化的角度为调整下颌前伸的再定位咬合板治疗可复性关节盘移位的可行性及有效性提供了佐证。
[Abstract]:Objective: to study the effect of anterior extension and occlusal on the vibration of temporomandibular joint (TMJ) in patients with reducible disc displacement.Methods 30 cases of reducible anterior disc displacement were performed normal opening and closing movement (the largest opening and closing movement beginning in the median jaw position) and anterior extension and closing movement (the maximal open and closed movement of mandible extending to the beginning of the tangential incision).The vibration signals of two mandibular movement modes were collected by using the joint vibration analyzer.The change of opening degree and opening type are recorded and analyzed with Joint-3D technology, and the data results are statistically analyzed.Results: the total vibration energy of joint vibration in front extension and closed mouth group was t I, the frequency was less than that of 300Hz A, the frequency was larger than that of 300Hz B, and the peak amplitude PA was obviously lower than that of the group of maximal opening and closing movement in the median position (P 0.01).The peak frequency of PF and the ratio of vibrational energy of frequency greater than 300Hz to those of frequency less than 300Hz have no difference between B / A and B / A. 2 modes of motion.There was no significant change in the degree of opening, but the distance of mandible deviation from the midline of 37.4% of the patients with reducible disc displacement was smaller than that of the normal movement of opening and closing.Conclusion: the extension of mandibular anterior incisor can reduce the vibration intensity of temporomandibular joint in patients with disc displacement, and some patients can improve the opening type.This study provides evidence for the feasibility and effectiveness of repositioning occlusal plate in the treatment of reducible disc displacement from the point of view of quantification.
【作者单位】：南京医科大学口腔疾病研究江苏省重点实验室南京医科大学附属口腔医院综合科颞下颌关节&口颌面疼痛研究中心;南京医科大学口腔疾病研究江苏省重点实验室南京医科大学附属口腔医院口腔颌面外科;
【基金】：国家自然科学基金项目(编号:81500903)
【分类号】：R782.6

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