| 摘要 |
<p>PROBLEM TO BE SOLVED: To reliably and accurately gather an impression of an important part in an oral cavity by arranging a disk-shaped part in the vicinity of a part corresponding to a median palatine raphe or a palatine fossette in a bottom wall projecting central part of a tray for dishing up an impression material. SOLUTION: When gathering an impression in an oral cavity, first of all, a tray body 1 for dishing up an impression material is inserted into the oral cavity, and the impression material is made to flow out by a fixed quantity to the lip side of a median part from a small hole 3 arranged in the vicinity of a part corresponding to an incisive papilla or a median frenulum in a tray side wall front central part. An upper lip part is lightly brought into pressure contact in the state to wait for hardening of the impression material, and afterwards, a tray is removed. In this case, a disk-shaped part 4 is arranged in the vicinity of a part corresponding to a median palatine raphe in a tray bottom wall projecting central part in the tray body 1 to thereby improve gathering of the impression related to the median palatine raphe and a palatine fossette. A projecting part 5 is arranged in the vicinity of a part corresponding to a Hamiler notch in a tray bottom wall rear circular part, and up heaved parts 6 are arranged in the vicinity positions of a part corresponding to a tuber maxillae in a tray side wall side rear edge part, respectively.</p> |
