Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey.
Department of Dentomaxillofacial Radiology, Faculty of Dentistry, University of Ankara, Ankara, Turkey.
Cranio. 2023 Jan;41(1):59-68. doi: 10.1080/08869634.2020.1820685. Epub 2020 Sep 16.
OBJECTIVE: To evaluate occlusal splint type differences in patients with bruxism. METHODS: Seventeen controls and 51 patients were divided into three subgroups, each assigned to use a different occlusal splint (hard, soft, or semi-soft) for 3 months and assessed by ultrasonography and electromyography (EMG) before (BT) and 3 months after treatment (AT). RESULTS: EMG values in all of the occlusal splint groups were significantly lower AT than BT ( < 0.05). BT and AT EMG values in the control group did not differ. Mean muscle thicknesses in bruxism patients was greater than in controls, and the greatest muscle thickness changes occurred with the hard occlusal splint ( < 0.05). DISCUSSION: A decrease in EMG activity occurred with all three splint types and was most prominent in the hard occlusal splint group. Ultrasonographic measurements of muscle length and thickness should be used alongside EMG to measure muscle activity in bruxism patients.
目的：评估磨牙症患者的咬合夹板类型差异。 方法：将 17 名对照者和 51 名患者分为三组，每组使用不同类型的咬合夹板（硬、软、半软）3 个月，并在治疗前（BT）和治疗后 3 个月（AT）进行超声和肌电图（EMG）评估。 结果：所有咬合夹板组的 EMG 值在 AT 时均明显低于 BT（<0.05）。对照组的 BT 和 AT 的 EMG 值没有差异。磨牙症患者的肌肉厚度平均值大于对照组，且硬式咬合夹板的肌肉厚度变化最大（<0.05）。 讨论：所有三种夹板类型均导致 EMG 活动减少，硬式咬合夹板组最为明显。在磨牙症患者中，应结合 EMG 使用超声测量肌肉长度和厚度来测量肌肉活动。
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