Apparatus and method for dental impressions

Details Apparatus and method for dental impressions Apparatus and method for dental impressions

1979-06-06

1981-03-10

Mancene, Gene

Dentistry

Apparatus

Having static product shaping surface

433 90, 222575, A61C 504, A61C 900

Patent

active

042551404

ABSTRACT:
Dental impressions are formed without retraction of the gingival tissue by injecting impression material from a syringe having a flexible tubular member positioned over the prepared tooth. The tubular member has a diameter corresponding to the size of the tooth and a tip contoured to the approximate shape of the gingival margin. The tubular member is initially positioned with the contoured tip extending into the gingival sulcus. As the impression material is injected around the tooth the tubular member is slowly withdrawn so that the tooth is fully covered with impression material extending completely into the gingival crevice. A full arch impression tray is then positioned within the mouth of the patient and the impression material allowed to harden.

REFERENCES:
patent: 2349607 (1944-05-01), Berger
patent: 2452903 (1948-11-01), Coffey
patent: 2648906 (1953-08-01), Holmes
patent: 3143257 (1964-08-01), Munford
patent: 3304608 (1967-02-01), Frohnecke
patent: 3357104 (1967-12-01), Green et al.
patent: 3390458 (1968-07-01), Lytton
patent: 3445935 (1969-05-01), Marshall
patent: 3600810 (1971-08-01), Marshall
patent: 3686754 (1972-08-01), Klondoloff
patent: 3722097 (1973-05-01), Colman et al.
patent: 4074436 (1978-02-01), Marshall
"The Premach System", Premach Pty. Ltd. brochure, pp. 6-7.

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