# US 8,465,281 B2 · Impression tray

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- Number: US 8,465,281 B2
- Document ID: US8465281B2
- Status: Granted
- Kind: B2
- Application number: 11/579,707
- Filed: 2005-05-03
- Published: 2008-11-20
- Granted: 2013-06-18
- Earliest claimed: 2004-05-05
- Applicants: Klaus Haselhuhn; Jan-Dirk Reimers; Hubertus Spiekermann
- Inventors: Klaus Haselhuhn; Jan-Dirk Reimers; Hubertus Spiekermann
- Web page: https://patentgrep.com/patent/US8465281B2

## CPC

- A61C 9/0006: {Impression trays}
- A61C 8/0001: {Impression means for implants, e.g. impression coping}
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)

## Abstract

Disclosed is an impression tray (1) with a concave tray body (2) for taking an impression of at least one jaw part, in which at least one implant body (12) is situated, which body has a receiving aperture into which an impression post (11) may be inserted, it being possible to fill the impression tray (1) with a free-flowing hardenable impression material (10) to produce a mold for a model of the jaw part, which when used reduces the time spent in the dentist's chair, increases the precision of an implant model and finally reduces the material and labor costs in that, at least in one portion, the tray body (2) has a wall (6, 6′) which can be penetrated by an impression post (11) inserted into the implant body (12) if the impression tray (1) is placed onto the jaw part.

## Claims

### Claim 1

A combination comprising:
(a) an impression tray comprising a concave tray body for taking a negative impression of at least one jaw part in a mouth of a patient;
(b) an impression post; and
(c) at least one implant body that is adapted to be situated in the at least one jaw part, said at least one implant body comprising a receiving aperture for insertion of the impression post;
wherein the tray body is fillable with a free-flowing hardenable impression material to produce a mold for a model of the at least one jaw part; and
wherein the tray body comprises a wall having at least one penetrable portion for penetration by the impression post inserted in the at least one implant body when the tray body is placed onto the at least one jaw part; and
wherein the at least one penetrable portion of the wall is a membrane, a woven fabric, a non-woven fabric or a film.

### Claim 2 (depends on 1)

The combination according to claim 1, wherein the at least one penetrable portion of the wall is a membrane and the membrane is self-adhesive.

### Claim 3 (depends on 1)

The combination according to claim 1, wherein the impression tray is a plastics material injection molded part comprising the at least one penetrable portion integrally joined thereto and penetrable by the impression post.

### Claim 4

A dental set comprising
(a) an impression tray comprising a concave tray body for taking a negative impression of at least one jaw part in a mouth of a patient and at least one implant body that is adapted to be situated in the at least one jaw part, said at least one implant body comprising a receiving aperture; and
(b) at least one impression post insertable into the receiving aperture of the at least one implant body;
wherein the tray body is fillable with a free-flowing hardenable impression material for producing a mold for a model of the at least one jaw part;
wherein the tray body comprises a wall having at least one penetrable portion for penetration by the at least one impression post inserted in the at least one implant body when the tray body is placed onto the at least one jaw part; and
wherein the at least one impression post comprises at least one of a taper, a cutting edge, a removable cap with a taper, and a removable cap with a cutting edge for pressure-reduced penetration of the impression material and the at least one penetrable portion of the wall of the tray body of the impression tray.