| 摘要 |
The frame is made from a recyclable plastics and reinforced by bars (22,23) forming three apertures (5,6,7) in its trough (9). There is a metal plate (25) in its lower central section and a flat surface in its central upper section. The outer face of the frame's outer wall has a cross-section formed by two inclined planes and a guide groove separating them. The inner walls of the frame have a series of teeth, while keys engage with the guide trough and lock together the sections of the model or of the tooth prosthesis. The flat surface can be used for a paper label giving the required identification.
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