正常口周肌压力的研究

目的定量分析正常口周肌压力的分布特征，探讨口周肌压力与错畸形的相关性。方法使用作者自行设计的微型肌压力传感器及口周肌压力测试系统，测量了３０名正常者在息止颌位和吞咽运动时的口周肌压力，对测量数值进行了统计学分析。结果男性肌压力大于女性肌压力，口周肌压力与性别有相关性；口周肌压力与牙位有相关性，不同牙位的肌压力分布特征各异；吞咽运动时的肌压力大于息止颌位时肌压力，其间差异有显著性。结论牙弓内外的肌压力数值不是简单的数量上的相等；个体间肌压力没有可比性；口周肌压力与型密切相关。     

成人骨性反(牙合)患者口周肌压力

目的 :研究骨性反牙合患者的口周肌压力特征 ,了解口周肌压力与牙颌形态的相关性。方法 :以 2 0名成人骨性反牙合患者为研究对象 ,检测了姿势位时上下切牙区、尖牙区、磨牙区颊 (唇 )舌侧口周肌压力。结果 :与对照组相比 ,除了上下磨牙区舌侧口周肌压力外 ,骨性反牙合组中的口周肌压力大于对照组中对应区域口周肌压力 (P <0 .0 1)。骨性反牙合患者同一牙弓内左右两侧口周肌压力值无显著性差异 ,各测量区域颊侧压力均大于相应部位的舌侧压力 (P <0 .0 1) ;除了尖牙区唇侧外 ,上下对应区域口周肌压力下颌大于上颌 (P <0 .0 1) ;各牙位口周肌压力中 ,下颌唇侧的口周肌压力最大 (P <0 .0 1)。结论 :牙颌形态影响口周肌压力的大小 ,骨性反牙合患者口周肌压力的最显著的特征为姿势位时下切牙唇侧肌压力值最大。     

正颌手术后(牙合)功能与肌功能重建

正颌外科的主要目的是改善患者的牙颌面畸形,恢复其正常的咀嚼功能.因手术引起的颌骨和牙齿位置的变化;肌肉长度的改变;颌间栓结所致的肌肉萎缩、肌纤维变性;以及髁状突的移位等原因,对患者原有的口颌系统生理功能造成很大影响,而且移动后的骨块由于受到肌肉、皮肤等软组织的牵拉有重新复位的趋势[1～5].     

应变计式压力传感器口周力测量系统的建立

设计了一种新型应变计式压力传感器测量系统,用于测量口周肌肉对牙弓的压力。经各项检测表明,测量系统中,传感器具有体积小、厚度薄、线性度好、温漂小、防水性强、频响适当等优点,可以满足口周力的测量要求。     

唇腭裂术后反He患者口周肌肌电图的研究

通过对２８名正常Ｈｅ，２７名普通反Ｈｅ及２９名单侧完全性唇腭裂术后反Ｈｅ患者的上唇肌及颏肌肌电图的检查，发现唇腭裂术后反Ｈｅ者口周肌肉存在特征性的肌电活动；①患者吞咽唾液时，上唇及颏肌肌电幅显著大于正常Ｈｅ及普通反Ｈｅ组；②唇腭裂组及普通反Ｈｅ组患者姿势位时，刻肌肌电幅大于正常Ｈｅ；③患者在各功能位时，上唇肌肌电活动非对称指数大于正常Ｈｅ及普通反Ｈｅ患者。唇腭裂术后反Ｈｅ患者周肌肉活动的异常，提示     

安氏Ⅲ类错(牙合)畸形患者翼外肌MRI研究

目的 通过MRI观察安氏Ⅲ类错(牙合)畸形患者翼外肌结构,探讨Ⅲ类错(牙合)畸形导致颞下颌关节紊乱病的潜在危险性.方法利用MRI对24例安氏Ⅲ类错(牙合)畸形患者(Ⅲ类错(牙合)组)和10名健康对照者(健康对照组)进行翼外肌成像研究.观察两组翼外肌病理结构及Ⅲ类错(牙合)组病理结构与颞下颌关节紊乱病体征的关系.结果Ⅲ类错(牙合)组翼外肌存在肌肉肥大、挛缩和萎缩等病理改变(36侧),并与健康对照组翼外肌病理改变(2侧)的差异有统计学意义(P＜0.01).安氏Ⅲ类错(牙合)畸形患者有翼外肌的病理改变,但多不伴颞下颌关节紊乱病的临床症状.结论安氏Ⅲ类错(牙合)畸形比正常(牙合)可更多地引起翼外肌的病理改变,有发生颞下颌关节紊乱病的潜在危险.     

松弛性及稳定性牙合垫对咀嚼肌肌电影响的探讨

目的 探讨松弛性He垫与稳定性He垫对咀嚼肌（咬肌、颞肌前束）肌电的影响。方法 20名健康志愿者不戴He垫与戴松弛性e垫和下颌稳定性He垫时分别作正中紧咬，比较颞肌前束，咬肌肌电积分值的改变。结果 戴人松弛性He垫和稳定性He垫后，颞肌前束，咬肌肌电积分值均有下降，戴松弛性He垫更显著。结论 松弛性He垫和稳定性He垫均对咀嚼肌有松弛作用。     

儿童替牙期骨性AngleⅢ类错He咀嚼肌肌电研究

目的：研究儿童替牙期骨性AngleⅢ类错He与正常He的咀嚼肌肌电变化规律。方法：对20例替牙期AngleⅢ类骨性错He儿童及20名正常He儿童进行咀嚼肌肌电图检查，测量嚼肌深浅层和颞肌前后束在姿势位，牙尖交错咬合位，前伸运动边缘位，后退运动边缘位的肌电活动，所得数据进行统计学分析。结果：骨性安氏Ⅲ类错He姿势位嚼肌与颞肌的肌电活动均大于正常He;牙尖交错咬合位嚼肌，颞肌肌电位均较正常He小；下颌前伸时颞肌前束肌电显著性高于正常He；下颌后退时，嚼肌显著性高于正常He。结论：替牙期AngleⅢ类骨性错He肌电有其特征性，提示早期矫治替牙期AngleⅢ类骨性错He不仅能解决美观问题，更有利于改善咀嚼肌收缩功能，减少肌功能对颅面形态的不良影响。     

异常吞咽与口周力相关性的研究

目的：定量分析异常吞咽口周力的分布特征。方法：用微力传感器和计算机辅助口周力测量系统对12名异常吞咽患者和12名正常吞咽错He患者上下颌中切牙、尖牙、第一磨牙颊、舌侧进行口周力的测量，对测量数据进行了统计学分析。结果：正常吞咽时男女之间各牙位的口周边值无显著性差异；异常吞咽时男性口周力大于女性，口周力与性别有相关性；异常吞咽组口周力大于正常吞咽组，其间差异有显著性。无论正常吞咽组还是异常吞咽组同侧上下颌同名牙位唇、颊侧与舌侧压力相比有显著性差异，下颌唇舌侧压力大于上颌唇舌侧压力。结论：异常吞咽时口周力与性别有相关性；异常吞咽组口周力大于正常吞咽组；舌的功能运动影响口周力，口周力会因吞咽方式的改变而发生适应性的变化。     

Association between perioral muscle pressure and masticatory performance

The aim of this study was to determine the association between strength of the perioral muscles and masticatory performance. Subjects were 56 healthy adults (30 men and 26 women; mean age of 24·9 years) with normal occlusion. Perioral muscle pressure was measured using JMS tongue pressure measurement device, and maximum tongue pressure and cheek pressure on the habitual chewing side (H) and non‐habitual side (non‐H) were measured. The masticatory performance was evaluated using gummy jelly, and the amount of glucose extracted was measured after chewing under condition H or non‐H. The association between sex and maximum tongue pressure was analysed using Student's t‐test. Cheek pressure and the amount of the glucose extracted between condition H and non‐H or between men and women were analysed by two‐way repeated‐measures anova . In addition, the correlations between maximum tongue pressure and cheek pressure on condition H, maximum tongue pressure and the amount of glucose extracted under condition H, and cheek pressure and the amount of glucose extracted under condition H were analysed using Pearson's correlation coefficients for men and women. The maximum tongue pressure, cheek pressure and the amount of glucose extracted were higher in men than in women. The amount of glucose extracted was higher under condition H than under condition non‐H, but no significant difference in chewing side was observed in cheek pressure between men and women. Additionally, positive correlations were shown between maximum tongue pressure, habitual‐side cheek pressure and the amount of glucose extracted on men and women. In conclusion, the association between higher perioral muscle pressure and better masticatory performance was shown.     

A study of the relationship of maximal perioral muscle pressure and tonic resting pressure using a pneumohydraulic capillary infusion system

The tonic (resting) and peak (maximum) lip pressures of 100 subjects were measured. The purpose was to evaluate the validity of the assumption that high peak pressures are indicative of high tonic pressures and vice versa. This paper describes the equipment and techniques devised to test these pressures. The results showed no statistically significant relationship whatsoever between tonic and peak lip pressures. We, therefore, suggest that maximum lip pressures not be used as a diagnostic aid in orthodontics.     

Electromyographic activity of perioral muscle in breastfed and non-breastfed children

The objective was to verify the electrical activity of the Mm. orbicularis oris and mentalis during suction of different liquids in breastfed and non-breastfed children from 2.5-3.5 years old. It was used a signal conditioner (MCS-V2-Lynx Eletr?nica Ltda, SP, BR) and Beckman Ag-AgCl bipolar surface electrodes. Breastfed children presented higher activity for mentalis and smaller values for the M. orbicular oris than non-breastfed children, suggesting the existence of different profiles of muscle activation between them.     

口周肌黏膜瓣在红唇缺损修复中的应用

目的:探讨口周肌黏膜瓣在红唇缺损修复中的临床效果。方法:根据红唇缺损部位及面积,在上、下唇及颊部设计肌黏膜瓣,长宽比例最大2.5:1,肌黏膜瓣取肌肉浅层,通过局部旋转、推进的方法修复红唇缺损,肌黏膜瓣转移后遗留的创面直接拉拢缝合。结果:25例患者实施口周黏膜瓣修复红唇缺损手术,肌黏膜瓣完全成活,成活率100%,修复后唇外形良好,无明显瘢痕,整形美容效果好。结论:该方法手术设计简单且易操作,以黏膜下肌肉蒂为主要血供,无需解剖血管蒂,是红唇缺损修复较为理想的方法。