Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1976-11-29
1979-07-17
Kinsey, Russell R.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
264 16, A61C 900
Patent
active
041610679
ABSTRACT:
A system and method is disclosed for obtaining precisely registered, articulated castings of upper and lower dental impressions. The dental impressions are obtained through use of a dental tray having a non-porous bite-deformable central septum. The impression material for the upper dental impression is contained in the upper portion of the tray. The impression material for the lower dental impression is contained in the lower portion of the tray and is supported by a bottom cover which is removed subsequent to placement of the tray in the mouth. As the patient bites, the impression material in the upper and lower portions of the dental tray is molded to the contour of the teeth and gums in their proper relationship with the teeth closed. After the material has set, the tray containing registered upper and lower impressions is removed from the mouth and placed into a mold. After the casting material is hardened and the castings are registered, the mold is removed, thus leaving precisely registered castings of the patient's teeth. When articulation of the upper and lower castings is desired, an articulator or a device which may be secured to an external articulator is positioned in each portion of the mold in the casting material prior to setting.
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Bekey Ivan
Wolk Roger S.
Kinsey Russell R.
Wilson John J.
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