According to the plane coordinate in each image, buccolingual direction was presented as X axis, mesial-distal direction as Y axis and occlusogingival direction as Z axis.
根据各层图上建立
平面坐标，设
向为X
，近远中向为Y，牙合龈向为Z。
According to the plane coordinate in each image, buccolingual direction was presented as X axis, mesial-distal direction as Y axis and occlusogingival direction as Z axis.
根据各层图上建立平面坐标，设向为X，近远中向为Y，牙合龈向为Z。
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