1. Making teeth model is like engrave a seal, using the technique of both intaglio and rilievi; so that the model can reflect someone's teeth accurately.
（取模需要的材料如上）口腔取模通过先阴后阳如印章般可以较为准确地表现出一个人的牙齿形态。
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2. Making teeth model is like engrave a seal, using the technique of both intaglio and rilievi; so that the model can reflect someone's teeth accurately.
