Shade matching device for artificial teeth and crown restoration

• US 5,989,022 A
• Filed: 10/10/1997
• Issued: 11/23/1999
• Est. Priority Date: 10/14/1996
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Shofu
• Original Assignee: Kabushiki Kaisha Shofu
• Inventors: Kuze, Yukuo, Yamamoto, Makoto
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US08/948,317
• Time in Patent Office: 774 Days
• Field of Search: 433/26, 206/83
• US Class Current: 433/26
• CPC Class Codes: A61C 19/10 Supports for artificial teeth for transport or for comparison of the colour
• CPC Class Codes: B44D 3/003 Methods or devices for colour determination, selection or synthesis, e.g. use of colour tables

Abstract

The present invention provides a shade matching device for an artificial teeth and a crown restoration in order to correctly adjust the artificial teeth to the natural teeth in shade, which comprises a set of:

shade guides, and

a gingival colored holder which has concaves shaped fitting a neck part of an artificial teeth or a crown restoration and retainers into which the stick of the shade guide can be inserted.

Claims

1. A shade matching device for at least one artificial tooth and crown restoration, which comprises a set of:

shade guides with a stick having an artificial tooth attached thereto, wherein said artificial tooth attached to said stick has a neck portion, and

a gingival colored holder which has concave shapes corresponding to the neck shape of the portion of said artificial tooth, wherein the shade guides are removably mounted in said holder such that the labial portion of the neck is fitted against the gingival colored holder whereby the color of the gingival color of the holder influences the color perception of the artificial tooth to simulate the tooth in a mouth, and retainers in which the stick of the shade guide can be inserted.

2. A shade matching device for at least one artificial tooth and crown restoration of claim 1, in which the holder comprises windows for confirming a color code of the shade guide.