医源性牙位、肌位不调再正畸治疗的疗效评价

目的：探讨正畸治疗引起的牙位、肌位不调，并评价其后续正畸治疗疗效。方法：采用直丝弓矫治器配合复合头帽口外牵引装置，对19例医源性牙位、肌位不调患者进行矫治，对治疗前后X线头颅定位侧位片进行对比分析。结果：在正畸临床工作中，医生不当的设计、治疗和患者较差的配合，可导致医源性牙位、肌位不调；用口内直丝弓矫治器与复合头帽口外牵引装置联合治疗，可明显推上牙弓向后；磨牙整体后移达到安氏Ⅰ类关系，恢复牙位、肌位良好的协调关系。结论：口腔正畸医生对医源性牙位、肌位不调应引起足够的重视；口内直丝弓矫治器配合复合头帽口外牵引装置对牙尖交错殆前错位患者的疗效确切。

The discrepancy between ICP and MCP caused by orthodontic treatment and its quantitative assessment to the effect of later orthodontic treatment

PURPOSE: To investigate the discrepancy between ICP and MCP caused by orthodontic treatment,to evaluate the treatment effect of the malocclusion with later orthodontic treatment. METHODS: Nineteen cases were selected and treated with preadjusted appliance and combination headgear appliance.Pre- and post- treatment celphalometric radiographs were analyzed. RESULTS: Discrepancy between ICP and MCP may be resulted from improper design and operation of orthodontists and poor cooperation of patients ;By preadjusted appliance and combination headgear appliance,upper dental arch was moved distally; Molar relationship was changed into Class I by bodily movement; A harmonization between ICP and MCP was rehabilitated. CONCLUSIONS: The discrepancy between ICP and MCP should be minded; Preadjusted appliance and combination headgear appliance were effective in the correction of the discrepancy between ICP and MCP.