Posterior scissors-bite: masticatory jaw movement and muscle activity
Posterior scissors-bite: masticatory jaw movement and muscle activity
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DOI：
10.1111/joor.12148
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发表时间：
2014-04-01
影响因子：
2.9
通讯作者：
Miyawaki, S.
中科院分区：
文献类型：
--
作者：
Tomonari, H.;Kubota, T.;Miyawaki, S.
剪式咬合是一种以上颌后牙颊侧倾斜或颊外翻和/或下颌后牙舌侧倾斜或舌侧外翻为特征的错牙合畸形。这种类型的错牙合导致咬合面接触减少，并可能导致后牙过度垂直重叠。这项病例对照研究是第一次评估咀嚼下颌运动和咬肌和颞肌活动的患者单侧后方剪咬合。在病例对照研究中，记录了30例单侧后牙剪式错牙合患者和18例正常人的下颌运动变量和表面肌电数据。患者剪状咬合侧的咀嚼模式与非剪状咬合侧和正常人右侧的咀嚼模式有显著差异。这些差异包括较窄的咀嚼模式（闭合角，P
Scissors-bite is a malocclusion characterised by buccal inclination or buccoversion of the maxillary posterior tooth and/or linguoclination or linguoversion of the mandibular posterior tooth. This type of malocclusion causes reduced contact of the occlusal surfaces and can cause excessive vertical overlapping of the posterior teeth. This case-control study is the first to evaluate both masticatory jaw movement and masseter and temporalis muscle activity in patients with unilateral posterior scissors-bite. Jaw movement variables and surface electromyography data were recorded in 30 adult patients with unilateral posterior scissors-bite malocclusion and 18 subjects with normal occlusion in a case-control study. The chewing pattern on the scissors-bite side significantly differed from that of the non-scissors-bite side in the patients and of the right side in the normal subjects. These differences included a narrower chewing pattern (closing angle, P