VTIQ评估颞下颌关节紊乱病患者咬肌弹性变化

doi:10.3969/j.issn.2095-9400.2021.06.007

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Abstract Objective: To investigate the changes in masseter muscle thickness and elasticity in healthy people and patients with temporomandibular joint disorder (TMD), using acoustic palpation tissue imaging and quantification technology (VTIQ). Methods: A total of 50 patients with TMD diagnosed in the Department of Otology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine from October 2019 to May 2020 were collected as the case group, and 50 healthy adults during the same period as the control group. All subjects underwent conventional ultrasound and VTIQ elastography to detect masseter muscle thickness and mid-range shear wave velocity (SWV) in closed and open bilateral masseter muscles. The differences in SWV and thickness of the left and right masseter muscle were compared between and within each group under closed and open state, and the correlation between thickness of the masseter muscle and SWV in the open and closed state was analyzed. Results: The thickness of the left masseter muscle and right masseter muscle of the control group, the healthy side masseter muscle and the affected side masseter muscle of the case group were greater in the open state than in the closed state, with statistical difference (P<0.05). Whether the mouth was open or closed, the thickness of the masseter muscle on the affected side of the case group was greater than that of the left masseter muscle and the right masseter muscle of the control group as well as the contralateral masseter muscle of the case group, the difference being statistically significant (P<0.05); The thickness of the left masseter muscle and the right masseter muscle of the control group and the healthy side masseter muscle of the case group showed no significant difference (P>0.05). In the control group, the left masseter muscle, the right masseter muscle, the contralateral masseter muscle and the affected side masseter muscle of the case group had greater SWV in the open state than in the closed state, and the difference was statistically significant (P<0.05). In the closed state, the SWV of the masseter muscle on the affected side of the case group was greater than that of the left masseter muscle and the right masseter muscle of the control group and the contralateral masseter muscle of the case group, with significant difference (P<0.05); The left masseter muscle, right masseter muscle of the control group and the contralateral masseter muscle SWV of the case group showed no significant difference (P>0.05). In the open state, the SWV of the masseter muscle on the affected side of the case group was greater than that of the left masseter muscle and the right masseter muscle of the control group as well as the contralateral masseter muscle of the case group, with significant difference (P<0.05); The SWV of the contralateral masseter muscle in the case group was greater than that of the left and right masseter muscles of the control group, the difference being statistically significant (P<0.05); There was no statistical difference in SWV between the left masseter muscle and the right masseter muscle of the control group (P>0.05). In the open and closed state, there was no significant correlation between the masseter muscle thickness and SWV of the affected side, the healthy side and the left and right sides of the control group. Conclusion: VTIQ can objectively evaluate the stiffness of the masseter muscle in patients with TMD, which provides quantitative information on the elasticity of the masseter muscle and an objective imaging basis for the clinic

Key words： virtual touch tissue imaging & quantification temporomandibular joint structural disorder ultrasonography muscle, skeletal

Received: 23 October 2020

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	ZHAO Yuezi
	SUN Xielu
	DAI Miaolei
	YE Haiyan
	ZOU Chunpeng

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https://xb.wmu.edu.cn/EN/10.3969/j.issn.2095-9400.2021.06.007 OR https://xb.wmu.edu.cn/EN/Y2021/V51/I6/468

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