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As for the other items, the image of the gingiva aligns automatically to its reference (the upper model). The model part that matches the reference will then be removed automatically to keep only the actual gingiva part in mesh format.
对于其他项目，牙龈的图像自动对准其参考（上颚模型）。然后将自动删除与参考匹配的模型部分，以仅保留网格格式的实际牙龈部分。
