错畸形对下颌语音运动范围的影响

目的　探讨错畸形对下颌语音运动的影响 ,以期为临床治疗提供进一步的参考依据。方法　用联机的下颌运动轨迹描记仪对前牙深覆覆盖组、前牙反组、前牙开组、对刃组四种错畸形组及对照组发音时的下颌三维运动与相应语音进行监测 ,并对下颌运动各边缘位点最上点 (S点 )、最下点 (I点 )、最前点 (A点 )、最后点 (P点 )进行统计分析。结果　与对照组发音运动各边缘位点相比 ,错畸形组有各自的移动趋势 :前牙深覆覆盖组偏向下 (S点、I点 ,P <0 .0 1) ,前牙反组偏向下 (S点、I点 ,P <0 .0 1)、偏向后 (A点、P点 ,P <0 .0 1) ,前牙开组偏向前 (A点 ,0 .0 1

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个别正常[牙合]人下颌语音运动的研究

目的探讨个别正常[牙合]人的下颌语音运动轨迹参数及特征,为口颌功能状况的诊断提供一定的依据。方法32名个别正常[牙合]人,运用BioEGN下颌运动轨迹描记仪记录受试者语音运动时的下颌运动轨迹情况,对收集的轨迹信号进行处理分析。结果下颌语音运动最大开、闭口速度分别为（96.19±38.66）mm/s和（86.89±31.96）mm/s;最大开口、前伸、后退、左侧、右侧运动位移分别为（9.93±3.85）mm、（1.09±0.76）mm、（5.24±2.23）mm、（1.58±0.93）mm、（1.65±0.94）mm。下颌语音运动轨迹参数之间存在一定相关关系,其中,下颌最大开口速度与最大闭口速度之间成显著正相关关系（r=0.880,P=0.000）;最大开、闭口速度与轨迹冠状面最大垂直开口位移、矢状面最大后退位移、最大斜行位移、水平面最大左侧位移、水平面最大右侧位移之间成一定正相关关系（P〈0.05）。结论个别正常[牙合]人的下颌语音运动轨迹形态相似,为连续、平滑、流畅的曲线。下颌语音运动为一种功能运动,其特征为：矢状面上前伸运动幅度小于后退运动幅度;冠状面上近似垂直向下运动,垂直向运动幅度大于水平向运动幅度;水平面上左、右侧方运动基本对称。     

偏颌畸形下颌开闭口运动特征的研究

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颞下颌关节紊乱病与错(牙合)畸形特征的关系

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单侧部分后牙锁(牙合)者的咀嚼运动轨迹研究

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下颌语音运动的研究进展

下颌语音运动是发挥语音功能时的下颌运动,临床上可通过对其运动轨迹特征进行研究以辅助分析患者口颌系统状况.下颌语音运动的研究内容主要涉及发音元素、口颌系统状况对运动轨迹影响的研究.本文结合国内外学者的研究状况,对此进行回顾与总结.     

A preliminary investigation into the effect of increased occlusal vertical dimension on mandibular movement during speech.

Current methods of determining whether a patient will accommodate to an increased occlusal vertical dimension rely on a largely subjective assessment of the mandibular rest position and capacity to adapt whilst wearing a temporary appliance. The purpose of this preliminary study was to establish if mandibular movement during speech may provide an objective criterion in the assessment of adaptation to increases in occlusal vertical dimension. The closest speaking space, measured as the vertical distance between an incisor point and centric occlusion, as determined during pronunciation of sibilant speech sounds was chosen to depict mandibular movement. The closest speaking space was determined using a Sirognathograph for six young adult subjects and varied from a mean of 1.0 to 3.3 mm. An acrylic splint covering the entire occlusal surface of the lower arch, designed to increase the occlusal vertical dimension by 4 mm in the incisor region, was then cemented on each subject's mandibular arch. The closest speaking space was again determined after 5 days continuous wear of the splint and the mean values found to have decreased to a range of 0.0-1.0 mm. The differences between the mean values for the closest speaking space for each subject before and after splint wear were statistically significant. It was postulated that this method may lead towards an objective basis for deciding if patients will adapt to an increase in occlusal vertical dimension.     

正颌手术对骨性Ⅲ类错畸形患者语音功能的影响

目的: 探讨正颌手术对骨性Ⅲ类错畸形患者术后语音功能的影响。方法: 选择 31例骨性Ⅲ类错畸形成人患者,分别在术前1周、术后 3个月采集颌面 CT 扫描数据、语音数据。将采集的CT数据导入Dolphin软件,对咽部解剖结构进行测量、分析及头颅X线头影测量分析;对语音数据进行主观和客观评价。采用SPSS 24.0软件包进行统计学分析。结果: 正颌手术后,软腭下缘到咽后壁的距离、会厌上缘到咽后壁的距离及其相应的横截面积和口咽、喉咽的体积较术前均有显著差异（P<0.01）。头颅X线片分析显示,术前和术后SNA、SNB、ANB、OJ、OBJ差异具有统计学意义（P<0.05）。正颌患者术后语音情况较术前发生改变,差异具有统计学意义（P<0.05）。正颌手术前、后,元音/a/B2、B3、B4,/i/B1、B2,/u/B1、B2、B4的差异具有统计学意义（P<0.05）,辅音/x/、/zh/、/s/下限频率及/zh/能量值的变化有统计学意义（P<0.05）,辅音/z/的语图形态变化有统计学意义（P<0.05）。上颌骨前移距离与△S1、△VOP、语音变化存在高度相关或显著相关。结论: 正颌手术对上、下颌骨的移动,引起咽腔解剖结构改变,导致术后语音改变。     

Mandibular movement during speech of two related Latin languages

Objectives/hypothesis: This study assessed the kinesiographic recordings of jaw movements during reading a text in Galician and Spanish language.

Study design: Cross-sectional blind study.

Methods: A homogeneous healthy group of 25 normal stomatognathic system and native Galician participants was studied. Frontal and parasagittal plane recordings of the intraborder lateral jaw movements and during reading Galician and Spanish texts were recorded using a calibrated jaw-tracking device, kinesiograph.

Results: Although movements were similar in both languages, a greater retrusion of the jaw in the Spanish language was shown; moreover, a tendency exists for a left-side motion envelope in this right-handedness preference sample.

Conclusions: This study supports the hypothesis that speech is controlled by the central nervous system rather than by peripheral factors and that the hemispheric dominance influences the asymmetry of the speech envelope.     

The effect of denture adhesive on mandibular movement during chewing

BACKGROUND: The authors conducted a study to determine if reducing mandibular denture movement through the use of a denture adhesive improves chewing function in edentulous patients. METHODS: The authors compared the mean chewing rates of 10 denture wearers who used and did not use a denture adhesive with that of a control group of 10 dentate people. The authors recorded mandibular movements using a multichannel magnetometer tracking system while the subjects chewed standardized pieces of dried apricots and fresh white bread. They made recordings for the test subjects without the use of denture adhesive and at zero, two and four hours after Fixodent denture adhesive cream (Procter & Gamble Co.) was applied to the mandibular denture. RESULTS: The mean chewing rate for the control group was significantly faster than that of the test group at baseline (P < .01). The authors found statistically significant increases in the mean chewing rates for the test group after the denture adhesive was applied at all time points for both foods. None of the after--adhesive-application rates were significantly different from the control group's rate (P > .05). CONCLUSIONS: Use of denture adhesive increased the mean chewing rate in test subjects immediately after and at two and four hours after denture adhesive was applied to a rate that approximated that observed in control subjects (P > .05). CLINICAL IMPLICATIONS: These findings show that using a denture adhesive promotes a faster and more natural rate of chewing.     

The use of natural spontaneous tooth movement in the treatment of malocclusion

The natural mechanisms of eruption, mesial migration, soft tissue pressure and occlusal forces can be used by the dentist to treat malocclusion in the growing child. The author describes how planned extractions of deciduous and permanent teeth can be employed to resolve crowding, promote spontaneous alignment, and avoid centreline displacement.     

骨性Ⅲ类错He畸形对语音功能的影响

为了探讨骨性Ⅲ类错Ｈｅ畸形对语音功能的是否有影响，我们以２０名骨性Ⅲ类错Ｈｅ畸形的成年患者为研究对象，由语音专家对其语音进行判听，同是应用计算机语音工作站（ｃｏｍｐｕｔｅｒｉｚｅｄｓｐｅｅｃｈｌａｂ）进行了语音声学分析，结果表明：（１）多数此类错Ｈｅ患者存在的语音功能异常，在ｚｈ，ｃｈ，ｓｈ，ｚ诸输音上最常见出现发音错误，错误类型为发音失真（ｄｉｓｔｏｒｔｉｏｎ）和发音替代（ｓｕｂｓｔｉｔｕｔｉｏ     

下颌语音运动及颌面部肌群肌电活动的同步分析

目的:分析正常牙合人下颌语音运动轨迹及同步颌面部肌群肌电活动特征。方法:运用BioPAKⅡ口颌系统功能诊疗仪同步记录30名个别正常牙颌人朗读标准中文短文时的下颌运动轨迹和颌面部肌群肌电活动情况,对收集的轨迹、肌电信号进行统计学分析。结果:①下颌语音运动最大开、闭口速度为96.19±38.66mm/sec,86.89±31.96mm/sec;运动最大开口、前伸、后退、左侧、右侧位移分别为9.93±3.85mm,1.09±0.76mm,5.24±2.23mm,1.58±0.93mm,1.65±0.94mm。轨迹最大开、闭口速度之间成显著正相关关系(r=0.880,P=0.000)。②上唇周肌、下唇周肌、咬肌浅层、二腹肌前腹双侧肌电幅值总值分别为12.09±3.97mv、16.72±5.85mv、4.87±2.17mv、8.60±3.97mv。上唇周肌与咬肌浅层肌电幅值之间(r=0.375,P<0.05),下唇周肌与二腹肌前腹肌电幅值之间成正相关关系(r=0.621,P<0.05)。结论:个别正常人牙合的下颌语音运动轨迹形态相似,为连续、平滑、流畅的曲线;轨迹最大开、闭口速度较稳定;同步颌面部同名肌群肌电幅值对称性...