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Process for producing dental prosthesis and kit for use therein

A technology for dentistry and restorations, which is used in the field of manufacturing dental restorations, and can solve the problems of low mechanical strength and toughness of alumina and spinel.

Active Publication Date: 2006-08-23
KURARAY NORITAKE DENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, neither alumina nor spinel is mechanically strong and tough enough to be used as a bridge
Therefore, even ceramic restorations with a framework made of alumina or spinel can only replace incisors when used as a bridge

Method used

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  • Process for producing dental prosthesis and kit for use therein
  • Process for producing dental prosthesis and kit for use therein
  • Process for producing dental prosthesis and kit for use therein

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0133] Figure 1-7 It is a schematic diagram for illustrating a method of manufacturing a crown 38 as an example of a dental prosthesis according to the first and second inventions. The crown 38 is to be fitted, for example, as an incisor in the upper jaw of an adult. The invention is also applicable to all other teeth. exist figure 1 In , a separately manufactured frame 10 (single tooth crown frame) made of zirconia was prepared. The frame 10 made of zirconia is produced by generally known methods such as forming a tooth form from plaster and pouring zirconia into the tooth form.

[0134] First, the first porcelain was uniformly coated (coated) with a brush on the above-mentioned frame 10 made of zirconia so that the first porcelain had a thickness of about 0.1 (mm). The first ceramic material used here is a slurry of ceramic powder including the ingredients shown in Table 1 given below by mixing 100 parts by mass of an aqueous propylene glycol solution with 100 parts by ...

example 2-10

[0147] In each of these examples, except that the second porcelain material having the composition shown in Table 2 and in the form of ceramic powder is used, and the viscosity of the second porcelain material at the casting temperature is shown in Table 2, the same method as in the example 1 A crown having the same configuration as Example 1 was fabricated in the same manner. It should be noted that "viscosity" in Table 2 represents the viscosity value at the casting temperature.

[0148] No.

SiO 2

al 2 o 3

K 2 o

Na 2 o

Li 2 o

B 2 o 3

CaO

CeO 2

MgO

Sb 2 o 3

ZrO 2

Viscosity (cP)

2

3

4

5

6

7

8

9

10

64.3

62.6

63.9

64.7

64.3

65.4

66.7

66.0

66.6

15.8

17.8

15.8

16.0

16.2

15.2

16.0

15.9

16.4

9.9

9.7

9.9

10.0

10.6

...

example 11

[0153] In this example, a frame made of metal is used as the base. The metal frame is composed of 78 (mass %) Au, 7.1 (mass %) Pt, 9.8 (mass %) Pd, 2.4 (mass %) Ag, and unavoidable impurities.

[0154] Also, in this example, except that the first porcelain used here includes ceramic powder made of the composition shown in Table 3 instead of the composition shown in Table 1 and the firing temperature of the lining coating layer is 980 (° C.) , The liner coating layer was formed in the same manner as in Example 1.

[0155] first porcelain

second porcelain

Ingredients

(quality%)

SiO 2

Al 2 o 3

K 2 o

Na 2 o

Li 2 o

ZrO 2

CaO

MgO

SnO 2

47.7

14.0

10.0

6.0

0.3

--

1.0

1.0

20.0

64.5

14.3

10.0

9.0

0.3

0.5

1.0

0.4

--

Viscosity at casting temperature

1.5×10 7 (c...

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Abstract

Providing a method of manufacturing a dental prosthesis which is excellent in beauty and which prevents movement of a back coating layer even where a cast coating layer is formed on a surface of the back coating layer by casting, and a kit used in the manufacturing method. In the dental-prosthesis manufacturing method and kit according to the present invention, since viscosity of a second porcelain forming the cast coating layer (36) at a predetermined casting temperature is lower than that of a first porcelain forming the back coating layer (14), movement of the back coating layer (14) is advantageously restrained.

Description

technical field [0001] The present invention relates to a method of manufacturing a dental restoration, and preferably a kit (ie a dental porcelain set) for manufacturing a dental restoration. Background technique [0002] Dental prostheses for the oral cavity need to have the strength to withstand strong masticatory forces, and also need to have an aesthetic appearance comparable to natural teeth. For this reason, generally manufactured dental restorations include: a base (i.e. a body serving as a base (core) of the dental restoration), such as a frame with high strength; and a frame formed on the base. An armored portion for providing the same hue or transparency as natural teeth. Some descriptions of such dental restorations are given in Patent Documents 1 and 2, for example. As for the method of forming the exterior part on the base body, widely used is a method in which porcelain powder and water are mounted on the surface of the base body (such as the above-mentioned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C5/09A61C5/10A61C5/73A61C5/77A61C13/00A61C13/083
Inventor 左合澄人榊原肇男平田达彦松本笃志
Owner KURARAY NORITAKE DENTAL
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