US 9,867,683 B2 · Hydraulic pressure bite-down dental impression

Abstract

In an exemplary embodiment, a method of creating an impression of structures of the human oral cavity comprises: preparing impression trays; creating a first, or base, impression; grinding out portions of the base impression; and using the void(s) in the ground out base impression to take a second, or wash, impression. The base impression is taken with an excess of a high-density impression material which is positioned to extend beyond the structures of interest (of which the impression is being taken). The base impression is removed and all fine structure surrounding the structure(s) of interest is ground out. A wash impression is then taken using a low-density impression material. The base impression creates a seal around the structure(s) of interest (a closed system), thereby producing omnidirectional hydraulic pressure on the low-density material. Such omnidirectional hydraulic pressure produces a highly detailed final impression from which a high-quality model (e.g., cast) can be made.

Claims19

Dependent claims

A method of producing an impression of a portion of an object comprising:

taking a first impression of the object using a first impression material, wherein the first impression material extends past the portion of the object;
enlarging a detail of the first impression of the object during the taking step by moving the first impression while in place over the object, wherein the detail corresponds to a detail of the portion of the object, wherein moving the first impression comprises at least one of rotating the first impression to the right, rotating the first impression to the left, translating the first impression in an anterior direction, translating the first impression in a posterior direction, translating the first impression in a medial direction, and translating the first impression in a lateral direction;
placing a second impression material inside the first impression of the object;
and
taking a second impression of the object using the first impression of the object containing the second impression material.

2 more elements

A method of producing an impression of at least one tooth of a jaw comprising:

providing an impression tray;
providing a first impression material;
providing a barrier material;
filling the impression tray with the first impression material;
covering the filled impression tray with the barrier material;
taking a first impression of the at least one tooth to create a cavity corresponding to a dimension of the at least one tooth, wherein the first impression of the at least one tooth is taken by forcing the impression tray filled with the first impression material and covered with the barrier material onto the at least one tooth, wherein the forcing of the impression tray onto the at least one tooth forces first impression material to extend beyond the at least one tooth;
enlarging a dimension of the cavity during the taking of the first impression and after the impression tray has been forced onto the at least one tooth, wherein the enlarging is accomplished by moving the filled and covered impression tray in at least one direction, wherein the at least one direction is in a plane substantially parallel to a plane defined by the jaw;
providing a second impression material;
filling the first impression of the at least one tooth with the second impression material;
and
taking a second impression of the at least one tooth to create a cavity corresponding to a dimension of the at least one tooth, wherein the second impression of the at least one tooth is taken using the first impression of the at least one tooth after enlarging a dimension of the cavity filled with the second impression material.

8 more elements

Dependencies are inferred from the claim text.

Hydraulic pressure bite-down dental impression

Life of this patent

Hydraulic pressure bite-down dental impression

Life of this patent

Abstract

Claims19