摘要
目的探讨单侧个别后牙正锁牙合对颞下颌关节(TMJ)振动的影响。方法比较单侧个别后牙正锁牙合患者与个别正常牙合者开闭口运动中TMJ的振动参数。运用关节振动分析仪记录15例单侧个别后牙正锁牙合者(其中左侧9例右侧6例)与20例个别正常牙合者的TMJ振动参数,收集关节振动数据并进行统计分析。结果对照组左右侧参数相比,差异均没有统计学意义(P>0.05)。研究组锁牙合侧与对照组相比,TMJ的TI、Ⅰ<300 Hz、峰振幅(PA)差异有统计学意义(P<0.01);研究组非锁牙合侧与对照组相比,TMJ的TI、Ⅰ<300Hz、峰振幅(PA)差异有统计学意义(P<0.05),且TI、Ⅰ<300 Hz、PA均较对照组大;研究组锁牙合侧与非锁牙合侧相比,TMJ的振动总能量(TI)、小于300 Hz振动能量(Ⅰ<300)差异有统计学意义(P<0.05)。结论单侧个别后牙正锁牙合可导致两侧颞下颌关节的振动异常,提示锁牙合可能是颞下颌关节功能紊乱的因素之一。
Objective To discuss the influence of unilateral individual posterior buccal crossbite on temporomandibular joint（ TMJ） vibration. Methods To compare the vibration parameters of temporomandibular joint（ TMJ） of subjects with unilateral individual posterior buccal crossbite and normal dentition during opening and closing mandibular movement. Fifteen anterior unilateral individual posterior buccal crossbite subjects（ 9 cases in the left side and 6 cases in the right side,aged 24.29 y） and 20 normal dentition subjects（ aged 21.6 y）were included. The vibration parameters of TMJs of the subjects were recorded. The joint vibration signals were collected and analyzed. Results There is no significant difference in the control group（ P〈0. 05）. The TI,I 300 Hz,peak amplitude（ PA） of unilateral individual posterior buccal crossbite side in research group were significantly higher than the control group（ P〈0.01）. The TI,I300 Hz,PA of posterior buccal non-crossbite side in research group were significantly higher than the control group（ P〈0.05）. The total integral（ TI）,integral（ I300） of unilateral individual posterior buccal crossbite side were significantly higher than the posterior buccal non-crossbite side in research group（ P〈0. 05）. Conclusions Unilateral individual posterior buccal crossbite can lead to temporomandibular joint abnormal vibration on both sides. It is suggested that crossbite may be one of the factors of temporomandibular joint disorders.
出处
《齐齐哈尔医学院学报》
2017年第17期1992-1994,共3页
Journal of Qiqihar Medical University
基金
国家自然科学基金(编号:81550037)
关键词
锁(牙合)
颞下颌关节
关节振动
Crossbite
Temporomandibular joint
Joint vibration
