Apparatus for making dental replacements

Details Apparatus for making dental replacements Apparatus for making dental replacements

1992-11-16

1995-01-24

Briggs, William

Gear cutting, milling, or planing

Milling

With regulation of operation by templet, card, or other...

128776, 409104, 409111, 433223, B23C 300, A61C 510

Patent

active

053837525

ABSTRACT:
The method described in this disclosure permits the production of dental replacements, such as inlays, onlays, and crowns, at high accuracy of fit and low cost in a single session of the patient's at the dentist's. For this purpose, a material that hardens is used for making a temporary inlay which provides an impression of the prepared dental cavity. After hardening, this material is removed from the tooth. In a first processing run, a first sensor (7a) does a preliminary scan of the temporary inlay (4) and a first processing tool (30a) is used for preliminary processing of the substrate mass (6). In a second processing run a second sensor (7b) and a second processing tool (30b) are used for a fine scan and fine processing. For this purpose the sensors (7a, 7b) and the processing tools (30a, 30b) are all arranged on a single linear stage (13). The temporary inlay (4) and the substrate mass (6) are attached to holder units (3, 5 ) of a rotation-synchronizer system (10) which in turn is arranged on a slide and elevator system (11, 12).

REFERENCES:
patent: 2330566 (1943-09-01), Edmunds et al.
patent: 2539027 (1951-01-01), Marchant
patent: 2793569 (1957-05-01), Tanner et al.
patent: 4411626 (1983-10-01), Becker et al.
patent: 4575805 (1986-03-01), Moermann et al.
patent: 4937928 (1990-07-01), van der Zel

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