| 摘要 |
Tray ( 10 ) for forming dental model comprises base wall ( 12 ) forming floor upon which dental casting material is poured. Spaced apart projections ( 14 ) extending upwardly from base wall ( 12 ). An upstanding axis of each projection ( 14 ) is substantially perpendicular to the upper face of the base wall ( 12 ). Projections ( 14 ) are arranged in two rows, with the projections ( 14 ) in one row being offset from corresponding projections ( 14 ) in the other row. Sidewalls of each projection ( 14 ) taper inwardly at an angle of between about 82 to 88 degrees with the upper face of the base wall ( 12 ). Each projection ( 14 ) has a thickness at its base of about 3 to 7 millimeters. The projections ( 14 ) are spaced from each other at their bases by a distance of from 0 to 5 millimeters.
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