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目的探讨采用ARCUSdigma下颌运动记录仪测量参数调节PROTARevo 7型架所模拟的人体接触精度。方法在河北医科大学研究生中征集24名受试者,采用前期开发的虚拟颅颌运动仿真系统(VirDMFSystem)比较ARCUSdigma-PROTARevo 7型架模拟的下颌运动与受试者的下颌运动,分析牙尖参考点运动轨迹之间的差异:侧方运动的水平偏移角度、侧方运动的垂直咬差异、前伸运动的矢状高度差异。结果水平偏移角度在工作侧下颌第二磨牙处最大(14.80±1.24)°,其中5例样本水平偏移角度大于20°。垂直咬差异在工作侧下颌第二磨牙处最大(191±10)μm,其中1例样本垂直咬(牙合)差异大于300μm。矢状高度差异在第一前磨牙处最大(151±12)μm,其中7例的样本矢状高度差异大于200μm。结论 ARCUSdigma-PROTARevo 7型架接触模拟精度在临床可接受范围内,为临床中架的选择和使用提供了参考。
OBJECTIVE: To investigate the contact accuracy of human simulated by PROTARevo 7 gimbal using ARCUSdigma jaw movement recorder. Methods Twenty-four subjects were enrolled in the postgraduate study of Hebei Medical University. The mandibular motion simulated by ARCUSdigma-PROTARevo 7 and the mandibular movement of the subjects were compared using the VirDMFSystem. Difference between reference point trajectories: horizontal offset angle of lateral motion, vertical bite difference of lateral motion, and sagittal height difference of forward motion. Results The horizontal offset angle was the largest (14.80 ± 1.24) ° at the second mandibular side of the working side, and the horizontal shift of the 5 specimens was greater than 20 °. The difference of vertical bite was maximal (191 ± 10) μm at the second mandibular side of the working side, and the vertical bite difference of one case was greater than 300 μm. The sagittal height difference was the largest (151 ± 12) μm at the first premolar, and the sagittal height difference of the seven samples was more than 200μm. CONCLUSIONS ARCUSdigma-PROTARevo 7 contact angle simulation accuracy is within the clinically acceptable range, which provides a reference for the selection and use of the clinical racks.