| 摘要 |
<p>PURPOSE:To eliminate the danger of an impression slurry being spilt into the mouth and flowing into the trachea. CONSTITUTION:This tray has a peripheral wall portion 7 having an edge with a bank of utility wax 30 to abut to a mucosa on the bottom of the valley portion 5 between the alveolar border of the upper jaw and the cheek and a mucosa in the depth of the lower surface 4 of the upper palate, and a bottom plate 8 which is connected to the major part of the edge opposite to the upper edge of the peripheral wall portion 7, with an impression-material injection hole 6 left only in a portion near the front of the alveolar border, is provided.</p> |
