Kiliaridis S, Mejersjö C, Thilander B
Eur J Orthod. 1989 May;11(2):131-8. doi: 10.1093/oxfordjournals.ejo.a035975.
The occlusal traits and the craniofacial morphology were studied in patients with an altered muscle function caused by myotonic dystrophy. Twenty-four adult patients were examined and compared with a matched group of healthy individuals. The condition of the masticatory muscles was evaluated by measuring the maximal bite force. The dental arches and the occlusal traits were analysed on dental casts. Lateral cephalograms were taken in the patients with myotonic dystrophy to study the craniofacial morphology. It was found that the patients suffering from myotonic dystrophy had weak masticatory muscles, which might be caused by the disease. A high prevalence of malocclusions (postnormal occlusion, anterior open bite and lateral cross bite) was found among these patients. Their craniofacial morphology showed a vertical aberration, characterized by a large angle between the mandibular and palatal planes and a steep mandible. These findings seem to be most pronounced in patients with an early onset of the disease and support the hypothesis that reduced muscle function may cause changes in the craniofacial morphology.
对患有强直性肌营养不良导致肌肉功能改变的患者的咬合特征和颅面形态进行了研究。对24名成年患者进行了检查，并与一组匹配的健康个体进行了比较。通过测量最大咬合力来评估咀嚼肌的状况。在石膏模型上分析牙弓和咬合特征。对强直性肌营养不良患者拍摄头颅侧位片以研究颅面形态。发现患有强直性肌营养不良的患者咀嚼肌无力，这可能是由该疾病引起的。在这些患者中发现错牙合（后正常咬合、前牙开牙合和侧方反牙合）的患病率很高。他们的颅面形态显示出垂直畸变，其特征是下颌平面与腭平面之间的角度较大以及下颌陡峭。这些发现似乎在疾病早期发作的患者中最为明显，并支持肌肉功能降低可能导致颅面形态改变这一假说。
