| 摘要 |
<p>The case has two rigid shells (1, 2) assembled with each other to form a housing that defines an interior space. The shells respectively comprise projection portions to form lugs (11, 12). The lugs are interlocked with each other when the shells are assembled, while leaving a flat space with a shape adapted to entirely receive a gripping shaft of an impression tray on which a dental impression is located. One of the lugs comprises a pin (13) that is extended into the flat space and arranged to be inserted into a hole formed in the gripping shaft.</p> |
