KR100759057B1 - Apparatus for duplicating artificial tooth - Google Patents

Abstract

An apparatus for duplicating an artificial tooth is provided to allow a user to quickly obtain a precise profile of the artificial tooth including a zirconia. An apparatus for duplicating an artificial tooth comprises: a lever A(11) and a lever B(12), both of which have the same length and are symmetrically swivelled around an intersecting point(13); a link A1(21) and a link B1(22), both of which are connected respectively to the lever A and B(11,12) in a symmetrically swivelled manner; a link A2(41) and a link B2(42) both of which are also connected respectively to the lever A and B(11,12) in a symmetrically swivelled manner; a base axis(31), supporting the two levers(11,12) and the four links(21,22;41,42) at a determined height; a guide(50), having a guide pin which is installed in a downward direction in the intersecting point(13); a milling device(60), having a tool which is installed in a downward direction; and a vice(70), in which a material for the artificial tooth is located.

Description

Tooth Clone Molding Apparatus {APPARATUS FOR DUPLICATING ARTIFICIAL TOOTH}

1 is a perspective view showing a preferred embodiment of the tooth replica molding apparatus according to the present invention.

Figure 2 is a plan view showing a preferred embodiment of the tooth replica molding apparatus according to the present invention.

Figure 3 is a front view showing a preferred embodiment of the tooth replica molding apparatus according to the present invention.

4 is a view showing a link structure of the present invention to explain the principle of the tooth replica molding apparatus according to the present invention.

Fig. 5 is a sectional view showing lever A and lever B employed in the tooth replica molding apparatus of the present invention.

Fig. 6 is a sectional view showing the links A1 and B1 employed in the tooth replica molding apparatus of the present invention.

Fig. 7 is a sectional view showing the links A2 and B2 employed in the tooth replica molding apparatus of the present invention.

FIG. 8 shows the plate as part of a vise portion applied to the tooth replication forming apparatus of the present invention. FIG.

Figure 9 is a view showing for explaining the clamp and the sample teeth mounted on the vise applied to the tooth replica molding apparatus of the present invention.

※ Explanation of code about main part of drawing ※

Lever A 11 Lever B 12

Intersection 13 Link A1 21

Link B1 22 Link A2 41

Link B2 42 Base Shaft 31

Guide section 50 Milling device section 60

Vise part 70 Upper support part 81

1st rhombus 100 2nd rhombus 200

FIELD OF THE INVENTION The present invention relates to a tooth replica molding apparatus, and more particularly, to a molding apparatus for replicating teeth and implant superstructures by milling denture processing materials comprising zirconia to a suitable scale.

Tooth duplication refers to all moldings, including artificial teeth or dentures and abutments, which are superstructures for implant teeth, modeled after specimen teeth. Also, denture or artificial tooth refers to an artificial tooth or a prosthesis that artificially replaces a natural tooth when it is missing. Such dentures include both local teeth used when one or more teeth are missing and total dentures used when the entire tooth is missing or multiple teeth are missing.

As a material of the existing dentures, metals such as gold were mainly used. However, they have a problem in that they stand out by themselves, not only because they are not natural and have a poor aesthetic sense, but also because they inevitably oxidize even in the natural state even if they are small. Ceramics, in particular zirconia, are in the spotlight as biomaterials replacing these conventional metal materials.

Zirconia is a form in which zirconium is already oxidized and does not cause the oxidation problem described above. In addition, in the tetragonal state of the metastable phase, which is a high temperature phase, strength and hardness are very high, light transmissive, and the color can be adjusted according to the added component, thereby making it almost similar to the actual tooth.

However, dentures containing zirconia have the disadvantage that they are difficult to process by the so-called dental work. In general, fabrication of dentures containing zirconia is performed by fabricating a sample tooth, and then milling the block zirconia in a block state before sintering for cutting and surface grinding with reference to the sample tooth, and then sintering at about 1500 ° C. to stabilize it. The process of obtaining a phase is carried out sequentially. Since zirconia has a size reduction of approximately 20-30% after sintering, the milling operation of the dental work must be processed by 20-30% larger than the actual size. This is a very difficult process even for experienced workers, which not only requires a lot of work time, but also practically hard to obtain a precise profile. Acquiring a precise profile is very important because the teeth give the patient or user a feeling of finishing, even in small differences. As a result, expensive CAD / CAM equipment is currently used, but this is one of the main reasons for the cost increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a tooth replica molding apparatus capable of quickly obtaining a precise profile.

In accordance with another aspect of the present invention, a tooth replication molding apparatus includes: lever A and lever B having the same length as each other, the lever A and lever B intersecting with each other and being coupled in rotation treatment at an intersection; As link A1 and link B1, one node portion is coupled to the one-point node portion of lever A or lever B, respectively, by rotation treatment, and the other node portion is coupled to each other by rotation treatment, so that lever A and lever B and Link A1 and link B1, which together form a variable first rhombus with the intersection as one vertex; As link A2 and link B2, one node portion is coupled to the other node portion of lever A or lever B by rotation treatment, and the other node portion is coupled to each other by rotation treatment, so that lever A and lever B and In addition, Link A2 and Link B2 forming a variable second rhombus having the intersection as one vertex; A base shaft portion supporting the entire link structure consisting of lever A, lever B, link A1 link B1, link A2 and link B2 to a predetermined height, and being coupled to the other node portions of the links A1 and B1 by rotation treatment; A guide part having a guide pin installed downward at an intersection point of lever A and lever B; A milling device portion having a tool installed downward at the other node points of the links A2 and B2; And a vise portion for positioning the specimen tooth at a position corresponding to the guide portion and for fixing the workpiece denture material at a position corresponding to the milling device, wherein the first rhombus and the second rhombus each have a length of a diagonal starting at the intersection point; Is a ratio of 2.5 to 4 to 1 so that the guide pin is moved along the outer surface of the specimen tooth, the tool of the milling device is allowed to cut and / or grind while moving according to the diagonal length ratio of the first rhombus and the second rhombus. It features.

The first rhombus and the second rhombus are characterized in that the length (x) and (y) of each diagonal line starting at the intersection point is a ratio of 3 to 1.

The vise portion is rotatable in a direction perpendicular to the longitudinal direction of the entire link structure. To this end, the vise section includes a plate comprising a specimen tooth anchorage and a stationary base material, and a fixture for rotatably coupling both sides of the plate.

Supporting the entire link structure up at a position spaced apart from the base shaft portion, and further comprising an upper support having an elastic cord suspended from the entire link structure.

The base shaft portion is provided to be rotatable in the longitudinal direction of the entire link structure.

The tooth replica molding apparatus of the present invention relates in particular to a device suitable for tooth replica molding using a material comprising zirconia. The tooth replica molding apparatus of the present invention can obtain dentures having a precise scale desired and a precise profile according to the link structure basically adopting the lever principle. The link structure employing the lever principle has two rhombuses with variable length in the ratio of 2.5 to 4 to 1. Guide pins or probes and milling devices are installed at the corresponding vertex of each rhombus. When the guide pin moves along the outer or outer profile of the specimen tooth, the milling device processes a denture 1.2 to 1.3 times the size according to the above-described scale ratio. These 1.2 to 1.3 times dentures can be reduced by 20 to 30% in subsequent sintering processes to obtain precisely the desired size of dentures.

Hereinafter, with reference to the drawings will be described in detail a tooth replica molding apparatus of a preferred embodiment according to the present invention.

1 is a perspective view showing a preferred embodiment of the tooth replica molding apparatus according to the present invention, FIG. 2 is a plan view, and FIG. 3 is a front view.

1 to 3, a preferred embodiment of the tooth replication molding apparatus of the present invention, lever A (11) and lever (B) having the same length to each other, and are coupled to the rotation treatment at the intersection 13 while crossing each other; 12). Rotation treatment may be implemented using a shaft and a bearing as in a conventional manner, the following rotation treatment may be the same for all. The guide part 50 may also be provided at the intersection point 13 in this embodiment, which will be described later.

In brief, in the present embodiment, the intersection point 13 is formed at a point where the lever A 11 and the lever B 12 are divided about 4 to 1 on the right and left sides about the intersection 13. .

Each of the node portions 11-1 and 12-1 of the lever A 11 and the lever B 12 respectively have one node portion 21-1 of the link A1 21 or the link B1 22, respectively. 22-1) are combined with their corresponding mates and rotational treatments. The other node portions 21-2 and 22-2 of the link A1 21 and the link B1 22 are coupled to each other by rotation treatment. Therefore, the link A1 21 and the link B1 22 together with the lever A 11 and the lever B 12 make the intersection 13 of the lever A 11 and the lever B 12 one vertex. 1 to form a rhombus 100. The other node portions 21-2 and 22-2 of the links A1 (21) and the links B1 (22) (2) are combined with the base shaft portion (31) provided on the base plate (30) by rotation treatment. It will be described later.

The other node portions 11-2 and 12-2 of the lever A 11 and the lever B 12 have one node portion 41-1 and 42 of the link A2 41 or the link B2 42, respectively. -1) is combined with the rotary treatment. The other node portions 41-2 and 42-2 of the link A2 41 and the link B2 42 are combined with each other by rotation treatment. Thus, link A2 41 and link B2 42 together with lever A 11 and lever B 12 intersect the intersection 13 of lever A 11 and lever B 12, 13 at one vertex. A second rhombus 200 is formed.

The first rhombus 100 and the second rhombus 200 are variable because each node is coupled to each other by rotation treatment, lever A (11), lever (B 12), link (A1) (21) and link (B1) (22). ), Links A2 41 and B2 42 all form a link structure 10.

Figure 4 is a view showing the link structure of the present invention to explain the principle of the tooth replica molding apparatus according to the present invention.

Referring to FIG. 4, the intersection point 13 divides each of the lever A 11 and the lever B 12 into a ratio of 2.5 to 4 to 1 on the right side and the left side. In the present embodiment, a ratio of about 4 to 1 was manufactured, and the right and left sides of the intersection point 13 at lever A 11 and lever B 12 were manufactured at about 330 mm and 82.3 mm, respectively (see FIG. 5). Accordingly, as shown in FIG. 4, the first rhombus 100 and the second rhombus 200 have a ratio of the length of the corresponding diagonal x and the diagonal y starting at the intersection 13 in a ratio of 4 to 1. Will have

If x increases by 10 mm, i.e., moves 10 mm to the left relative to the base axis 31, y will increase its quarter, 2.5 mm. As a result, if the base shaft 31 is fixed, x moves by 10 mm, but the whole (x + y) moves by 12.5 mm. This means that for the change in x the overall (x + y) changes by about 25% or more, and the denture so processed returns to the same size as the sample tooth by about 20% shrinkage in the sintering process. Similarly, in the ratio of 3 to 1, when x is increased by 10 mm, y is increased by approximately 3.3 mm, and the total (x + y) is increased by about 13.3 mm. This results in an approximately 33% greater overall (x + y) change in x, returning to the same size as the sample tooth with a reduction of approximately 25% upon reduction.

5 to 7 show lever A 11, lever B 12, link A1 21, link B1 22, link A2 41 and link B2 42, which are components of the overall link structure 10; Shows a cross-sectional view. Each of the grooves are formed at both ends are installed elements for the rotation treatment such as shaft and bearing. A plurality of grooves formed in the middle portion is to reduce the weight.

Subsequently, with reference to FIGS. 1 to 3, as described above, the base shaft portion 31 is rotated at the other node portions 21-2 and 22-2 of the links A1 21 and B1 22. To be combined. In this case, the axis used may be the same axis as the axis for coupling the link A1 (21) and the link B1 (22) in a rotational treatment. The base shaft portion 31 supports the entire link structure 10 to a predetermined height. In addition, the base shaft portion 31 is preferably provided on the base plate 30. The base plate 30 in this embodiment is preferably the basis on which the components of the device of the invention are installed. However, the base plate 30 or the substrate may not necessarily be plate-shaped, and may be any shape in which the components of the apparatus of the present invention may be installed.

Also preferably, the base shaft portion 31 is provided to be rotatable in the longitudinal direction of the entire link structure 10. To this end, the base shaft portion 31 may be coupled to the base plate 30 via, for example, a hinge 32.

At the intersection 13 of the lever A 11 and the lever B 12, a guide part 50 having a guide pin 51 provided downward is provided. The guide pin 51 or the probe is coupled to the lower end of the guide part 50. As will be described later, the guide pin 51 moves along the outer surface and / or profile of the specimen tooth mounted below it to transfer the travel distance and / or profile to the milling device portion 60.

Milling device portion 60 is installed at the rotational treatment coupling point of the link A2 (41) and link B2 (42). Rotation treatment coupling points are the other node points 41-2 and 42-2 of the links A2 41 and B2 42, respectively. The milling device part 6 has a tool 61 installed downward and a rotating means (not shown) for rotating it. The tool 61 is a cutting and / or grinding tool.

Preferably, the guide portion 50 and the milling device portion 60 may be a cylindrical shape having a certain length as a shape that can be gripped by the operator. Also preferably, the lower end portion of the guide portion 50 and the milling device portion 60 reaches the same height.

And a vise portion 70 that secures the sample tooth to be positioned at a position corresponding to the guide portion 50 and to place the workpiece denture material at a position corresponding to the milling device. The vise part 70 includes the plate 73 including the fasteners 71 and 72 of the sample tooth and the processed denture material, and the fixing part 74 so that both sides of the plate 73 can be rotated. ) Can be rotated 360 ° in a direction that intersects at right angles with the longitudinal direction of the entire link structure 10.

Fig. 8 is a view showing a plate as a part of a vise portion applied to the tooth replica molding apparatus of the present invention, and Fig. 9 illustrates a schematic view of a sample tooth mounted on the vise portion applied to the tooth replica molding apparatus of the present invention and the processed denture material. It is a figure shown to make.

8 and 9, a specimen tooth anchoring 71 is provided on the right side of the plate 73, and a processed denture material, that is, a zirconia block (not shown) before sintering, is disposed on the stationary 72 on the left side. It is provided by the clamp 72-2. In the case of the sample tooth 71-2, as shown in FIG. 9, the clamp 71-1 may be clamped to be fixed to the sample tooth fixing station 71 of FIG. 8 by screwing and bonding. Reference numeral 71-4 denotes a screw hole. In addition, in the case of the zirconia block fixing clamp 72-2, several pieces should be prepared according to the size of the sample tooth, and after being seated in the fixing place 72, the screw holes 72-4 are crimped by screwing. Can be fixed In addition, various conventional vicing methods such as a jaw method may be applied.

It further comprises an upper support 80 for supporting the entire link structure 10 upwards. The upper support 80 is provided with an elastic cord 83 suspended from the entire link structure 10 so as not to suppress the variability of the entire link structure 10. As the elastic band 83, for example, a spring, a rubber band or the like may be applied, and other flexible materials may be used. To this end, the upper support portion 80, a pillar 81 fixed to the base plate 30, a rail 82 provided in the transverse direction to the pillar, one end is connected to the rail 82, the other end is a guide portion It includes a spring that is an elastic cord 83 connected to the upper end of the (50). The upper support portion 80 serves to support the link structure 10 opposite to the base shaft portion 31, and the other end of the elastic string 83 is the base shaft portion 31 in addition to the guide portion 50. It may be connected to an appropriate site at a spaced apart position.

Referring to the operation and use of the tooth replica molding apparatus according to the present invention. First, the clamp 71-1 holding the specimen tooth 71-2 and the clamp 72-2 clamping the zirconia block are fixed to the fixing places 71 and 72, respectively. Subsequently, the guide 50 and the milling device 60 are held by both hands, and the sample teeth 71-2 and the zirconia block are respectively contacted. Then, the guide pin 51 of the guide part 50 is moved along the outer surface of the sample tooth 71-2, and the tool 61 of the milling device 60 which moves accordingly is moved to the zirconia block which is a processing denture material. And / or grinding. As needed, the position to be processed can be changed by rotating the vise part 70.

Referring again to the drawings, in the case of the ratio of 4 to 1, when the guide pin 51 of the guide portion 50 moves along the profile of the outer surface of the sample tooth 71-2, that is, x in FIG. Moves 10 mm to the left, y increases by 2.5 mm. Therefore, the total length change (x + y) is 12.5 mm. This in turn means that when the guide pin 51 moves 10 mm, the tool 61 of the milling device moves 12.5 mm and is cut about 25% larger. Sintering a zirconia block cut at this size or magnification reduces the size by about 20% to obtain the desired denture size. In the ratio of 3 to 1, if x moves about 10 mm to the left, the ysms 3.3 mm increases accordingly. Therefore, the total length change (x + y) is 13.3 m. When the guide pin 51 moves 10 mm, the milling device tool 61 is cut 33% larger, which is 13.3 mm. Sintered cut zirconia blocks of this size yield a denture of the desired size, reduced by about 25% in size. It is desirable that this ratio be preset or adjusted as desired. This is because the ratio of reduction is different depending on variables such as stabilizer or cooling rate to be added, and the change of the ratio can be calculated in advance by comprehensively calculating the above-described parameters.

The effect of the tooth replication molding apparatus of the present invention is as follows. First, a more precise size and profile is obtained compared to pure manual work, which simply depends on the skill of the operator. Second, the work time can be significantly shortened. Third, even if the worker does not have a high level of skill, it is easy to learn how to use. Fourth, cost savings are large because you do not have to use expensive CAD / CAM equipment. Fifth, the present invention can easily and easily produce an expensive zirconia implant upper structure. Sixth, the device of the present invention can have a high work efficiency with a relatively simple configuration.

Claims (6)

In tooth replica molding apparatus: A lever A 11 and a lever B 12 having the same length as each other, the lever A 11 and the lever B 12 intersecting with each other and being coupled in rotation treatment at the intersection 13; As the link A1 21 and the link B1 22, one node portion 21-1, 22-1 is connected to the lever A 11 or one node portion 11-1 of the lever B 12. 12-1) are respectively coupled to the rotary treatment, and the other node points 21-2 and 22-2 are coupled to each other by the rotary treatment, and together with the lever A 11 and the lever B 12, Link A1 21 and Link B1 22, which form a variable first rhombus 100 with the intersection 13 as one vertex; As the link A2 (41) and the link B2 (42), one node portion (41-1, 42-1) is the other node portion 11-2, the lever A (11) or the lever B (12) 12-2) are respectively coupled to the rotary treatment, and the other node points (41-2, 42-2) are coupled to each other by the rotation treatment, so that together with the lever A (11) and lever B (12) Link A2 41 and Link B2 42 forming a variable second rhombus 200 with the intersection 13 as one vertex; While supporting the entire link structure (10) consisting of the lever A (11), lever B (12), link A1 (21) link B1 (22), link A2 (41) and link B2 (42), A base shaft portion 31 coupled to the other node portions 21-2 and 22-2 of the links A1 21 and B1 22 by rotation treatment; A guide part 50 having a guide pin installed downward at an intersection point 13 of the lever A 11 and the lever B 12; A milling device unit 60 having a tool installed downward at the other node portions 41-2 and 42-2 of the links A2 41 and B2 42; And a vise portion 70 for fixing the specimen tooth at a position corresponding to the guide portion 50 and for placing the processed denture material at a position corresponding to the milling device 60. The first rhombus 100 and the second rhombus 200 each have a length (x, y) of the diagonals starting at the intersection 13 to be in a ratio of 2.5 to 4 to 1, so that the guide pin is Moving along the outer surface of the sample tooth, tooth replication, characterized in that the tool of the milling device cutting and / or grinding while moving in accordance with the length ratio of the diagonal of the first rhombus 100 and the second rhombus 200 Forming device. The method according to claim 1, The first rhombus 100 and the second rhombus 200 are teeth replica molding apparatus, characterized in that the length (x, y) of each diagonal starting at the intersection 13 is a ratio of 3 to 1. . The method according to claim 1, The vise portion (70) is a dental replica molding apparatus, characterized in that rotatable in a direction crossing at right angles to the longitudinal direction of the entire link structure (10). The method of claim 3, wherein the vise 70 is: A plate 73 including the specimen tooth anchorage 71 and the anchorage 72 of the processed denture material; Tooth replica molding apparatus characterized in that it comprises a support (74) rotatably coupling both sides of the plate (73). The method according to claim 1, Supporting the entire link structure 10 upward at a position spaced apart from the base shaft portion 31, further comprising an upper support portion 80 having an elastic cord 83 suspended from the entire link structure 10 Tooth replication molding apparatus comprising. The method according to claim 1, The base shaft portion (31) is a tooth replica molding apparatus, characterized in that installed to be rotatable in the longitudinal direction of the entire link structure (10).

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