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
上建立的平面坐标，设颊舌
为X
，近
为Y，牙合龈为Z。
;
;线;
点;
形;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.
根据各层上建立的平面坐标，设颊舌为X，近为Y，牙合龈为Z。
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