JPH078506A - Marker forming method for dental prosthesis material - Google Patents

Abstract

PURPOSE:To form an identification marker easily without giving a feeling of physical disorder to a user by pouring gold solder or silver solder into an identification marker marked on the surface of a metallic coronal prosthesis material and then smoothly connecting the surfaces of the coronal prosthesis material and gold solder or wax solder to each other by polishing. CONSTITUTION:An identification marker 2 is formed by pressing a previously engraved resin plate to a wax original mold, and a coronal prosthesis material 1 is cast using the wax original mold to obtain the coronal prosthesis material 1 where the identification marker 2 is marked on the side thereof. After casting, the cast material is subjected to sand blasting, gold solder is poured in a groove of the identification marker 2 by the use of a blow pipe, after rough polishing, the cast material is treated with hydrochloric acid to be discolored, and further finish polishing is performed to finish the cast material in such a manner that the coronal prosthesis material 1 and the identification marker 2 are smoothly connected to each other. Thus, if the tip of the tongue touches the identification marker 2 formed on the coronal prosthesis material 1 in a mouth, a feeling of physical disorder is not caused quietly, and there is no fear that a bacterial plaque on a tooth adheres to the inside of the mark.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a dental prosthesis marker for facilitating individual identification of a corpse that is severely damaged by burning death or an unidentified corpse when another person is killed by an accident. Regarding

[0002]

2. Description of the Related Art A lot of information in the dental field has been conventionally used for personal identification of damaged or unidentified corpses.

However, such information is based on dental treatment data received by the dead before birth, and its effectiveness as an identification method is limited except when the identity can be estimated to some extent.

As a general example of a dental identification method, a name is entered on a part of a plate denture, or a name is entered.
A denture identification method is known in which a stamped metal plate is attached.

[0005]

However, the plate denture has the following problems.
Compared with a crown prosthesis to be put on the teeth, there is a problem that the user is considerably limited in versatility as an individual identification means, and the crown prosthesis has a metal plate. If such a foreign substance is attached, the discomfort felt by the wearer is too great, and there is a risk of falling off, so it was not practical.

Although it is possible to engrave a simple symbol such as an initial on a dental prosthesis by hand, a great deal of labor is required for the operation, and it is possible to write in terms of the size of the dental prosthesis. The amount of information is extremely limited, and the texture after engraving is bad, so there are still many problems in practical use.

For this reason, it has not been done so far in the past to provide an identification mark on a dental prosthesis.

It is an object of the present invention to provide a method for forming a marker on a dental prosthesis that does not make the user feel uncomfortable and is easy to process, focusing on such a problem.

[0009]

SUMMARY OF THE INVENTION According to the present invention, an identification mark is imprinted on the surface of a metal crown prosthesis, gold wax is poured into the mark, and then the crown prosthesis and the gold wax are polished. Further, the surface of the crown prosthesis and the surface of the gold wax are smoothly continuous by a polishing process after pouring silver wax into the marking.

Further, in the above, in the process of casting a metal crown prosthesis by the lost wax method, the wax prototype of the prosthesis is pressure-welded with a member having convex marking contents to identify the wax prototype. Is stamped, and a crown prosthesis is cast by using this wax prototype to stamp an identification mark on the crown prosthesis.

Further, an identification mark is imprinted on the surface of the metal dental prosthesis, and the depth of this imprint is formed to about 40 microns or less.

Further, in the above description, the identification mark is imprinted on the crown or premolar prosthesis.

Similarly, in the above description, the identification mark is formed so as to be located on the palate side and the lingual side when the crown prosthesis is attached.

[0014]

[Function] Since the surface of the dental prosthesis is engraved and the surface is polished to form a smooth surface, there is no discomfort at the time of mounting.

When gold wax is embedded, by treating the surface with an acid, the gold wax portion develops a different color from the base material of the crown prosthesis, and the identification mark can be read. Also,
When silver wax is embedded, the color is different from that of the base material of the prosthesis for the crown, so that it can be easily identified as it is.

Further, when an identification mark having a depth of 40 microns or less is engraved, even if the engraved mark is not filled, the texture is not bad and the user can easily identify the item without feeling discomfort.

The mounting on the molars or premolars enhances the effectiveness at the time of burning, and the palate side and the tongue side are engraved to ensure the aesthetics at the time of mounting.

[0018]

1 to 8 show an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a crown prosthesis for molar teeth, and an identification mark 2 indicating the surname of the wearer is formed on the side surface facing the inside of the mouth in the mounted state.

The crown prosthesis 1 is composed of gold-silver-copper-palladium for dental casting (but is not limited to this, and other known dental metals can be used).
Casting is carried out by the usual lost wax process including forming an abutment, making an impression-taking model, and waxing up.

The identification mark 2 is formed by press-contacting a pre-made resin plate on a wax prototype used for this casting (a wax mold of the same type as the dental prosthesis 1).

The resin plate is used for resin printing, and is, for example, a convex plate having the surname of the wearer carved on the surface. Such a convex plate is formed by, for example, superimposing a Chinese character negative image on a light-polymerized resin, applying light to polymerize the resin, and washing off an unpolymerized portion with water.

Then, the resin plate is pressed into contact with the softened wax original mold to form a two-character surname on the side surface of the wax original mold, for example, in 6-point type.

By casting a dental prosthesis 1 using this wax prototype, an identification mark 2 consisting of two letters on the side surface is formed.
The dental prosthesis 1 with the mark is completed.

After casting, the casting is sandblasted,
Then, using a blow pipe, insert 16 in the groove 2A of the identification mark 2.
Apply K's gold wax. For gold wax, 14K, 2
Of course, 0K etc. can also be used. Then, after the rough polishing, a hydrochloric acid treatment is applied to change the color, and further final polishing is performed to finish the crown prosthesis 1 and the identification mark 2 so that they are smoothly continuous.

The position where the identification mark 2 is formed is
The palate side and the lingual side, that is, the position to be placed on the inner side, makes the portion invisible from the outside so as to maintain the aesthetic and distinguishable. Further, the tooth to which the identification mark 2 is applied is most preferably a premolar or a molar, which is less likely to be damaged by burning and the like and is highly effective in identification.

The identification mark 2 formed on the dental prosthesis 1 as described above has no discomfort even if the tip of the tongue touches it in the mouth, and there is no concern that plaque may adhere to the inside of the mark.

Further, in the case of burning, the front teeth to a part of the premolars may be burned, but the identification mark 2 provided on the lingual side of the molars is in the most difficult position to burn, Since it is the side surface of the molar, a sufficient area for engraving is secured, and thus high discrimination is obtained.

For the identification, the surface of the dental prosthesis 1 is subjected to an acid treatment, so that the base material and the gold wax part develop different colors, so that the identification mark 2 can be easily read from the base material.

Further, the melting temperature of the gold-silver-copper-palladium alloy constituting the dental prosthesis 1 is 965 ° C., whereas the melting temperature is gold wax 730 to 760 ° C. Therefore, even if the gold wax melts at a high temperature, such as when burned to death, the marking groove remains as long as the crown prosthesis 1 itself does not melt, so that the identification is possible.

By the way, in this embodiment, the marking was filled with gold wax, but silver wax may be used instead of this gold wax. Silver wax is more likely to rust than gold wax, but in this case, it is possible to easily identify without using special treatment by using rust to raise the identification mark 2 with a color different from that of the base material. .

Further, it is possible to leave the groove 2A of the identification mark 2 as it is as shown in FIG. 2, without filling the groove 2A with these gold wax or silver wax. In this case, by setting the depth of the marking to about 40 μm or less, it is possible to minimize the discomfort when touching with the tongue and yet to sufficiently identify the wear.

Further, in the above embodiment, the identification mark 2 is composed of two kanji characters, but when the family name is 3 characters or more, an abbreviation symbol such as a point indicating omission may be written after the family name, for example. Alternatively, information other than Kanji can be added, such as entering a symbol indicating gender before the family name. of course,
It is possible to engrave only the first name instead of the surname, or to engrave the initials of the alphabet.

The above-mentioned work can be easily performed by a dentist or a dental technician in the usual work for producing a dental prosthesis, except for the production of the resin plate.

FIG. 3 shows another embodiment relating to the marking method of the mark. In this embodiment, while the dental prosthesis 1 is coated with a heat-sensitive resin, the same letters as those of the identification mark 2 are drawn on a glass plate coated with an ultraviolet ray blocking coating so that only the letter portion transmits ultraviolet rays. The original plate 3 is used.

Then, the dental prosthesis 1 is irradiated with ultraviolet rays through the original glass plate 3 and the lens 4. As a result, the crown prosthesis 1 is irradiated with ultraviolet rays in the shape of the character of the marker, and the coating in this portion is thermally decomposed.

When the crown prosthesis 1 is dipped in a corrosive acid after removing the thermally decomposed resin, only the marked portion from which the resin has been removed corrodes. Finally, the resin covering the portion outside the prosthesis 1 is removed to complete the marking.

Another embodiment of the marking method is shown in FIGS. 4A and 4A.
Shown in B. In this embodiment, as shown in FIG. 4A, a marking is provided on a wood block 5 using a base material of a corrosion resistant material, and corrosive acid is attached to the wood plate to form a crown as shown in FIG. 4B. The wood block 5 is pressed against the side surface of the prosthesis 1 while rotating from the end.

5 to 8 show still another embodiment relating to the marking method. Here, the marker forming portion of the dental prosthesis 1 and the shape around it are recorded by the camera 6 as image data. Similarly, the prototype 7 of the sign is stored as image data. Then, the image processing unit 8 composed of a microcomputer performs image processing for superposing these image data, and the output control unit 9 also composed of a microcomputer numerically controls the marking device 10 based on the processed image. , Mark 2 on the surface of the dental prosthesis.

As the marking device 10, an end mill 11 for cutting the crown prosthesis 1 by rotation as shown in FIG. 6 and an electric discharge machining for cutting the crown prosthesis 1 by a beam 12 discharged from an electrode as shown in FIG. By vibrating the tip 13 or the electrode hard tip 14 as shown in FIG.
A vibrating pen 15 for cutting can be used.

By using various marking methods as described above, the present invention not only provides forensic identification, but also increases the added value of the dental prosthesis 1 by marking personal signatures, for example. It can also be used for various purposes.

In the above description, the identification mark 2 is engraved on the crown prosthesis 1, but the identification mark 2 can be similarly attached to the plate denture. For a plate denture, the identification mark 2 is directly engraved on the metal floor inside the vicinity of the molar, so that the touching part of the tongue is almost never in contact with the denture. However, it is possible to prevent the wearing feeling from being deteriorated. Therefore, in this case, there is no problem even if the groove depth is 40 microns or more.

[0043]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, an identification mark is engraved on a crown prosthesis, and gold wax or silver wax is embedded in the engraved portion.
Alternatively, by setting the depth of the marking to 40 μm or less, it is possible to reduce or eliminate the discomfort when the tongue touches the sign.

When the gold wax is filled, it can be identified by acid treatment, and when the silver wax is filled, it can be identified as it is due to the discoloration of the base material. This allows direct identification.

By imprinting an identification mark on the crown or premolar crown prosthesis, it is possible to exert a high discrimination ability against burning and the like, and by imprinting on the palate side and the lingual side, the aesthetic appearance at the time of wearing is improved. You can also maintain sex.

[Brief description of drawings]

FIG. 1 is a perspective view of a dental prosthesis according to an embodiment of the present invention.

FIG. 2 is a sectional view of a marker forming portion of the dental prosthesis.

FIG. 3 is a perspective view of a coating removing process using ultraviolet rays according to a second embodiment of the present invention.

FIG. 4A is a perspective view of a woodblock showing a third embodiment of the present invention.

FIG. 4B is likewise a perspective view of the usage of the wood block.

FIG. 5 is a configuration diagram of a marking device by image processing and numerical control showing a fourth embodiment of the present invention.

FIG. 6 is a perspective view of an end mill usable in a fourth embodiment.

FIG. 7 is a perspective view of the electric discharge machining chip.

FIG. 8 is a perspective view of the vibrating pen.

[Explanation of symbols]

 1 Crown prosthesis 2 Identification mark

Claims (6)

[Claims] 1. A metallic crown prosthesis is engraved with an identification mark on the surface thereof, and gold wax is poured into the marking, and then the crown prosthesis and the surface of the gold wax are smoothly continuous by polishing. A method for forming a marker on a dental prosthesis, the method comprising: 2. A surface of a dental prosthesis made of metal is engraved with an identification mark, and after pouring silver wax into the inscription, the dental prosthesis and the surface of gold wax are smoothly continuous by polishing. A method for forming a marker on a dental prosthesis, the method comprising: 3. In the process of casting a metal crown prosthesis by the lost wax method, a member having convex marking contents is pressed against the wax prototype of the prosthesis to stamp an identification mark on the wax prototype. The method for forming a marker on a dental prosthesis according to claim 1 or 2, wherein the dental prosthesis is engraved with an identification marker by casting the dental prosthesis using the wax prototype. 4. A method for forming a mark on a dental prosthesis, which comprises imprinting an identification mark on the surface of a metal prosthesis and forming the depth of the mark to about 40 microns or less. 5. The method for forming a mark on a dental prosthesis according to claim 1, wherein the identification mark is imprinted on a crown or premolar crown prosthesis. 6. The method of forming a marker for a dental prosthesis according to claim 1, wherein the identification marker is formed so as to be located on the palate side and the lingual side when the dental prosthesis is attached. .