Custom dental shade guide selector and method for its use

• US 4,382,784 A
• Filed: 07/02/1980
• Issued: 05/10/1983
• Est. Priority Date: 07/02/1980
• Status: Expired due to Term

• Current Assignee: Robert T. Freller
• Original Assignee: Robert T. Freller
• Inventors: Freller, Robert T.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Wilson, John J.
• Application Number:
  US06/164,542
• Time in Patent Office: 1,042 Days
• Field of Search: 433/26, 433/163, 433/34, 433/40, 433/45, 433/208, 433/219, 206/83, 264/19, 264/20
• US Class Current: 433/26
• CPC Class Codes: A61C 19/10 Supports for artificial teeth for transport or for comparison of the colour

Abstract

A dental shade guide selector including a color tooth sample, a handle for manipulating the sample in the mouth and a holder for storing the color tooth samples. The color tooth sample includes a frame having a base plate and a rim bordering the plate. A layer of porcelain or the like is fused or otherwise fixidly attached on the plate inside the border of the rim. The plate has a front convex surface and a rear concave surface. The rim has a greater height at the incisor end of the tooth sample than at the gingival end of the tooth sample, so that the porcelain layer is thicker at the incisor end than at the gingival end. A pair of spaced apart feet extend outward from the rear surface of the plate to define a channel (curved) therebetween for receiving the support of the artificial tooth positioned in the mouth. The method for using the tooth sample comprises the obtaining of a first batch of said porcelain to simulate a first color, and constructing therefrom a first color sample, for matching the color of real teeth, and using said first batch to construct artificial teeth having said first color, and discarding said first color sample when said first batch of porcelain is depleted. A second batch of said porcelain simulating said first color is obtained and a second color sample is constructed from said second batch, and using the second batch to construct artificial teeth having said first color.

Claims

1. A dental shade guide selector including a sample tooth having a specific shade or color for matching with the color or shade of real teeth for providing the color or shade for an artifical crown or tooth having a support structure and a veneer of porcelain or the like, said sample tooth comprising a frame having:

a body portion having a front surface and a rear surface, an incisor end and a gingival end for positioning adjacent the gum line of the patient when matching the color of the sample tooth with the color of adjacent real teeth;

a rim extending outward from the periphery edge of the front surface of the body portion;

a layer of porcelain affixidly attached to the body portion and confined within the area bordered by said rim;

a pair of spaced apart feet attached to the rear surface for defining a channel therebetween for receiving the support structure of said artificial tooth inside the patient'"'"'s mouth, the outer parts of said feet extending outward from the incisor end of the body portion; and

a pair of tongs for gripping said outer parts of said feet.

2. A dental shade guide selector including a sample tooth having a specific shade or color for matching with the color or shade of real teeth for providing the color or shade for an artificial crown or tooth having a support structure and a veneer of porcelain or the like, said sample tooth comprising a frame having:

a body portion having a front surface and a rear surface, an incisor end and a gingival end for positioning adjacent the gum line of the patient when matching the color of the sample tooth with the color of adjacent real teeth;

a rim extending outward from the periphery edge of the front surface of the body portion;

a layer of porcelain affixidly attached to the body portion and confined within the area bordered by said rim; and

a pair of spaced apart feet attached to the rear surface for defining a channel therebetween for receiving the support structure of said artificial tooth inside the patient'"'"'s mouth, the cross-sectional area of each of said feet being substantially an inverted "T" shape incuding a bottom bar and a forward extending neck for attachment at the forward end thereof to the rear surface of the body portion.

3. The dental selector of claim 2, further includes:

a holder having a pair of spaced apart openings to receive said feet for storing said sample tooth, the cross-sectional area of each of said openings is substantially an inverted "T" shape including a bottom portion and an upward extending portion for receiving respectively said bottom bar and said neck of said foot.

4. A dental shade guide selector including a sample tooth having a specific shade or color for matching with the color or shade of real teeth for providing a support structure and a veneer of porcelain or the like, said sample tooth comprising:

a body portion having a front surface, a rear surface, an incisor end, and a gingival end for positioning adjacent the gum line of the patient when matching the color of the sample tooth with the color of adjacent real teeth;

a rim extending outward from the periphery of the front surface of the body portion;

a pair of spaced apart feet attached to the rear surface for defining a channel therebetween for receiving the support structure of said artificial tooth inside the patient'"'"'s mouth; and

a pair of tongs for gripping said outer parts of said feet, each of the outer parts of said feet at least at one end of said body portion including openings, and said tongs including a pair of tong members and each of the tong members including prongs for positioning in said openings.

5. The dental shade guide selector of claim 4, wherein the outer parts of said feet at the gingival end of the body portion include openings for receiving said prongs.

6. The dental shade guide of claim 4, wherein said tongs include a resilient means for resiliently securing the prongs inside said openings.

7. The dental shade guide selector of claim 4, wherein each of said tong members include a finger portion having one of said prongs, a handle portion and an intermediate portion substantially perpendicular to said finger and handle portions.

8. A dental shade guide selector including a sample tooth having a specific shade or color for matching with the color or shade of real teeth for providing the color or shade for an artificial crown or tooth having a support structure and a veneer of porcelain or the like, said sample tooth comprising a frame having:

a body portion having a front surface and a rear surface, an incisor end and a gingival end for positioning adjacent the gum line of the patient when matching the color of the sample tooth with the color of adjacent real teeth;

a rim extending outward from the periphery edge of the front surface of the body portion;

a layer of porcelain affixidly attached to the body portion and confined within the area bordered by said rim;

a pair of spaced apart feet attached to the rear surface for defining a channel therebetween for receiving the support structure of said artificial tooth inside the patient'"'"'s mouth; and

a holder having a pair of pathways formed therein, to receive said feet of the sample tooth, for storing said sample tooth, each of said feet including a bar portion and a neck portion, said neck portion being attached to the rear side of the body portion, the cross-sectional area of each of said feet taken on a plane passing through said bar portion being substantially an inverted "T", and the cross-sectional area of said pathway also being substantially an inverted "T" to receive said feet.

9. A dental shade guide selector including a sample tooth having a specific shade or color for matching with the color or shade of real teeth for providing the color or shade of real teeth for providing the color or shade for an artificial crown or tooth having a support structure and a veneer of porcelain or the like, said sample tooth comprising a frame having:

a body portion having a front surface and a rear surface, an incisor end and a gingival end for positioning adjacent the gum line of the patient when matching the color of the sample tooth with the color of adjacent real teeth;

a rim extending outward from the periphery edge of the front surface of the body portion;

a layer of porcelain affixidly attached to the body portion and confined within the area bordered by said rim, said rim being formed from a pliable material to enable said rim to be removed after said layer is fixidly attached to the body portion.

10. The dental shade guide selector of claim 9, wherein said rim is perforated inward from the outer edge thereof.

11. A method for reproducing a color shade of teeth for an artificial tooth from a sample tooth constructed from a frame having a base plate and a removable rim, comprising the steps of:

preparing a batch of a compound for forming the porcelain veneer of a sample tooth corresponding to a color shade;

taking a first portion of said batch and applying it on said base plate within the area defined by said rim;

securing said first portion on said base plate of the frame;

removing said rim after said first portion is secured on said base plate;

taking a second portion of said batch and applying it on a backing of the artificial tooth; and

securing said second portion of said batch on said backing of the artificial tooth to provide said color shade on said artificial tooth.

12. In a dental shade guide selector including a sample tooth, a mold holder, and a tooth sample gripping means, said sample tooth including a frame comprising:

a base plate having a front surface and a rear surface, an incisor end and a gingival end for positioning adjacent the gum line;

a pair of spaced apart feet attached to the base plate for defining a channel therebetween for receiving the support structure of an artificial tooth inside the patient'"'"'s mouth; and

securing means for associating the sample tooth with the mold holder and the gripping means.

13. The shade guide selector of claim 12, wherein said mold holder and gripping means includes cooperative securing means for attaching with said securing means of said sample tooth, one of said securing means includes a depression and the other said securing means includes a hump for extending into said depression.

14. The sample tooth of claim 12 includes:

a flange extending outward from each of the feet of the frame; and

a pair of notches are formed in the mold holder to receive said flanges.

15. The mold holder of claim 12 includes:

a cavity to receive the frame of said tooth sample, said cavity being defined by a pair of side walls and a rear wall, the side of the mold holder opposite said rear wall being open to receive said frame of the tooth sample, the height of said side walls and the rear wall being greater than the height of said frame to provide a space for a layer of porcelain or the like.

16. The mold holder of claim 15 includes:

a support member for inserting into said cavity after the frame of the tooth sample is positioned in the mold holder to close said open side, said support member also having a height greater than the height of said frame to confine said layer of porcelain within the inner side of the support member, said rear wall and said side walls.

17. The tooth sample gripping means of claim 12 includes:

a pair of resilient arms connected together by a web at the inner ends of the arms, said arms being spread apart to receive the tooth sample therebetween and resiliently hold the sample in position.

18. The mold holder of claim 12 includes:

a pair of resilient bars connected together by a web at the inner ends of the bars, said bars being spread apart to receive the tooth sample therebetween and resiliently hold the sample in position.

19. The tooth sample of claim 12, wherein said base plate is convex on the front surface and concave on the rear surface, said incisor end of the front surface being substantially more convex than at the gingival end.

20. A color shade tooth sample comprising:

a base plate having a front surface, a rear surface, an incisor end, and a gingival end for positioning adjacent the gum line of a patient;

a pair of spaced apart feet attached to the base plate for defining a channel therebetween for receiving the support structure of an artificial tooth inside the patient'"'"'s mouth;

a pair of flanges extending outward from the outer ends of the feet;

a depression formed in the outer surface of said feet to receive cooperating hump for securing the tooth sample to another object; and

a layer of porcelain or the like fused to the front surface of said base plate.