| 摘要 |
A dental training system is provided for teaching direct restoration procedures for a tooth that has a color within a range of natural tooth colors. The system comprises a first restorative material couplable to a base tooth structure and having a first color outside the range of natural tooth colors. The first restorative material is configured to form a first contrasting layer on the base tooth structure. A second restorative material having a second color different than the first color is couplable to the base tooth structure and to the first contrasting layer to form a second contrasting layer adjacent to the first contrasting layer.
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