Patent ID: 7273371
Filing Date: 2007-09-25
Classification: A61C

Abstract:
1. A dental impression tray, used in cooperation with impression materials to obtain an impression of a jaw and gingiva areas of an edentulous patient, said dental impression tray comprising: a. a body having a body front end, a body rear end, a predetermined shape of said body, and a plurality of body openings; said predetermined shape of said body accommodating the anatomical shape of the patient's mouth, said predetermined shape of said body being suitably dimensioned and configured to be placed around the entire jaw and gingiva areas while retaining the impression materials; said body openings positioned in said body at predetermined locations and having predetermined shapes such that the combination of said body openings locations and shapes cooperate with said body to allow the impression materials to vent through said body openings to obtain the impression of the jaw and gingiva areas of the patient and to retain the impression materials on said body, said body further comprising a thickened edge, substantially circular in shape with a predetermined diameter and being received along an outer edge of said body; said predetermined diameter being between 0.075 inches and 0.142 inches such that said thickened edge cooperates with said body and the impression materials to retain the impression materials on said body; b. said thickened edge further comprising a plurality of edge notches positioned perpendicular to said thickened edge at predetermined locations on an exterior and an interior of said thickened edge such that said plurality of edge notches cooperate with said thickened edge and the impression materials to retain the impression materials on said body; and c. a handle having a predetermined width dimension, a predetermined length dimension, and a predetermined offset dimension, where the offset dimension is the distance between a bottom of said body and a bottom of said handle; said predetermined width dimension being between 0.455 inches and 0.590 inches, said predetermined length dimension being between 0.970 inches and 1.398 inches, and said predetermined offset dimension being between 0.309 inches and 0.441 inches; said handle comprising a first handle section, and a second handle section; said first handle section is connected to said body, at said body front end, by said second handle section, in the center of said body; said first handle section being substantially a rectangular shaped sheet having a first handle section spherical shaped curvature, where said first handle section spherical shaped curvature is in the horizontal plane when looking at the front of said body front end; and said second handle section having a predetermined shape where it is received onto said body to form said predetermined offset of said handle.