| 摘要 |
The instant invention provides a method and an apparatus for forming a palatal plate prosthesis of a substantially precise, predetermined uniform thickness. The apparatus includes: a base having three leveling supports; a first component attachable to the base in one of a plurality of positions, for fixing a first casting which includes a first impression of the palate of a patient; wherein the first impression is fixed by the first component, so as to generally lie in a first horizontal plane; a second component for fixing a second casting which includes a second impression formed by applying casting material over the substantial entirety of the first impression; wherein the second impression is movably fixed by the second component, so as to generally lie in a second horizontal plane which is generally parallel to, and equidistant from, the first horizontal plane; and, a third component for enabling vertical displacement of the first impression from the second impression substantially precisely equal to the predetermined uniform thickness. The third component further includes: a shaft having at least one retention element at the lowest end thereof, for fixing the second casting thereto; and, a shaft elevator for vertically, non-rotationally, displacing the shaft. The apparatus further includes a fourth component attached to the shaft elevator for supporting the third component; a stop located between the shaft elevator and the fourth component for stopping downward vertical travel of the shaft elevator; a spacer having a thickness substantially equal to the substantially precise, predetermined uniform thickness, insertable between the lowest most end of the shaft elevator and the stop; and, at least one generally vertical post for fixing the fourth component to the base.
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