Matsumoto Shinichi, Morinushi Takanobu, Ogura Tadashi
Kagoshima University Dental School, Department of Pediatric Dentistry, Japan.
J Clin Pediatr Dent. 2002 Fall;27(1):53-61. doi: 10.17796/jcpd.27.1.8w14853220g47593.
Time dependent changes of parameters associated with malocclusion in patients with Duchenne muscular dystrophy (DMD) were examined in four dental developmental stages in 34 patients. We adopted activities of daily living (ADL) score, dental arch, craniofacial morphology, and electromyograms of the masseter and temporalis muscle as parameters. A comparison was made with the results in DMD subjects to data from healthy subjects with normal occlusion reported in the literature. In DMD subjects, manifestations of open-bite were related to ADL score, sagittal shortening and transverse expansion of the dental arch and vertical overgrowth of the lower jaw. Posterior cross-bite malocclusion was associated with differences in the time dependent changes between the jaws in transverse expansion. The malocclusion in DMD subjects was also related to the time dependent disproportional changes in masticatory muscle function by EMG. Occlusal deviation in DMD subjects became apparent at the late mixed dentition and malocclusion became definitely manifest from early permanent dentition.
在34例杜氏肌营养不良症（DMD）患者的四个牙齿发育阶段，研究了与错牙合相关参数的时间依赖性变化。我们采用日常生活活动（ADL）评分、牙弓、颅面形态以及咬肌和颞肌的肌电图作为参数。将DMD受试者的结果与文献中报道的正常咬合健康受试者的数据进行了比较。在DMD受试者中，开牙合的表现与ADL评分、牙弓矢状缩短和横向扩展以及下颌垂直过度生长有关。后牙反牙合错牙合与颌骨横向扩展的时间依赖性变化差异有关。DMD受试者的错牙合也与肌电图显示的咀嚼肌功能随时间不成比例的变化有关。DMD受试者的咬合偏差在混合牙列晚期变得明显，错牙合在恒牙列早期肯定会显现出来。
