Veneer crowns and wax carvers for creating veneer crowns

Abstract

To provide a facing crown capable of making the strength of an upper jaw front tooth equal to the occlusal force of a molar, and a wax cover capable of efficiently shaping a wax pattern formed in the process of manufacturing the facing crown.SOLUTION: A facing crown 30 to be attached to an upper jaw front tooth 11 is provided with a metal frame 32, and a step part 34 with which the top part of a lower jaw front tooth 21 is brought into contact is formed on the tongue side of the metal frame 32 when attached to the oral cavity. In a wax cover 40 used when the facing crown 30 is manufactured, a molding stepped part 45 having a shape similar to the shape of a stepped part 34 of the metal frame 32 is formed in a cutting edge part 44 of the wax cover 40.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a prefabricated crown adapted to upper front teeth and a wax carver for making the prefabricated crown.

Background Art

[0002] Human teeth are roughly divided into front teeth and molars, and the front teeth and molars and each have different roles. The front teeth are mainly used for biting off food, and the molars are mainly used for grinding food. FIG. 7 is a schematic diagram showing the meshing state of human teeth. In FIG. 7, human teeth grow in the upper jaw 110 and the lower jaw 120 and respectively. In the upper jaw 110, the range F of approximately four teeth on the left side in the figure is the upper front teeth 111, and the range M of approximately four teeth on the right side in the figure is the upper molars 112. In the lower jaw 120, similar to the upper jaw 110, approximately four teeth on the left side in the figure are the lower front teeth 121, and approximately four teeth on the right side in the figure are the lower molars 122. In Figure 7, The acting direction of the force in the meshing state between the upper front teeth 111 and the lower front teeth 121, And, and the meshing state between the upper molars 112 and the lower molars 122 is indicated by arrows in FIG. 7. In addition, the detailed structures of other teeth are omitted.

[0003] In Figure 8, 113 is the alveolar bone of the maxilla 110, and 114 is the gingiva of the maxilla 110. Also, 123 is the alveolar bone of the mandible 120, and 124 is the gingiva of the mandible 120. FIG. 8(A) shows the meshing state between the upper front teeth 111 and the lower front teeth 121, and (B) shows the meshing state between the upper molars 112 and the lower molars 122. In FIG. 8(A), the top of the lower front teeth 121 abuts on the lingual side of the upper front teeth 111, that is, on the inner surface of the oral cavity. Also, in (B), the upper molars 112 and the lower molars 122 each have cusps 115, 125 and fissures 116, 126, and the cusp 115 of the upper molars 112 meshes with the fissure 126 of the lower molars 122, and the fissure 116 of the upper molars 112 meshes with the cusp 125 of the lower molars 122.

[0004] Incidentally, as shown in Figures 7 and 8, the maxillary anterior teeth 111 are slightly inclined labially, that is, outward from the oral cavity. Therefore, the apex of the mandibular anterior teeth 121 abuts against the maxillary anterior teeth 111 in a way that pushes them upward from below. As a result, the maxillary anterior teeth 111 are subjected to occlusal forces at an angle different from the tooth axis, which makes them prone to injuries such as tooth mobility and root fracture, posing a problem in dental treatment.

[0005] When the maxillary anterior tooth 111 is damaged, the conventional treatment involves prosthetic treatment using a veneered crown 130, as shown in Figures 9 and 10. The veneered crown 130 is cemented to the root 111A of the damaged maxillary anterior tooth 111. The veneered crown 130 comprises a post core 131 with its base inserted into the tooth root 111A, a metal frame 132 fitted onto the post core 131, and a veneered portion 133 made of hard resin, ceramic, or the like, fixed from the upper end of the metal frame 132 to the labial outer surface. In this case, as can be seen from the photograph in Figure 10, the metal frame 132 has a smooth surface shape, without any steps or other irregularities, similar to the lingual surface of the original maxillary anterior tooth 111.

[0006] Furthermore, the upper molars 112 and lower molars 122 play a role in occlusal support, which supports the bite. However, due to dental caries and periodontal disease, the molars 112 and 122 are often the first teeth to be lost. Losing either the upper or lower molars 112 or 122 results in a loss of occlusal support, making chewing difficult, and also placing a burden on the front teeth 111 and 121 that was previously handled by the molars 112 and 122.

[0007] In this case, conventional veneered crowns 130, as described above, have the disadvantage that they cannot withstand the strong occlusal forces of molars 112 and 122 because the metal frame 132 does not have cusps or fissures like those of molars 112 and 122. For this reason, there has been a need for dental technology that can withstand the strong occlusal forces of molars 112 and 122 for people who have lost part of their molars 112 and 122.

[0008] Furthermore, there are no documents in the patent literature concerning inventions of dental technical means that enable people who have lost some of their molars to exert a strong biting force similar to that of molars. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] The first object of the present invention is to provide a veneer crown that can be cemented to the maxillary anterior teeth, which can give the maxillary anterior teeth strength to withstand occlusal forces comparable to those of molars, thereby improving masticatory efficiency.

[0010] Furthermore, a second object of the present invention is that, when manufacturing a veneer crown according to the present invention, the wax pattern created in the veneer crown manufacturing process In cosmetic surgery, shapes that were not previously anticipated The objective is to provide a wax carver for creating veneered crowns that can efficiently shape the external form. [Means for solving the problem]

[0011] To achieve the first objective, the present invention provides a veneer crown that is cemented to the maxillary anterior teeth, the veneer crown comprising a metal frame, the lingual side of the metal frame formed thereon when the metal frame is in the oral cavity, with a stepped portion formed thereon where the apex of the mandibular anterior teeth abuts. This stepped portion, when the veneered crown is fitted into the mouth, comprises a cusp-like projection located on the lingual side of the stepped portion, and a fissure-like recess located labially relative to the cusp-like projection, which engages with the apex of the mandibular anterior tooth and is recessed from the cusp-like projection toward the root of the maxillary anterior tooth. The cusp-like projection and the fissure-like recess are formed continuously in the inward and outward directions of the veneered crown. It is a veneered crown.

[0012] In the present invention, it is preferable that the veneered crown is formed as a continuous connected crown spanning multiple maxillary anterior teeth, and that the cusp-like projection is formed continuously on the lingual side of the connected crown.

[0013] To achieve the second object, the present invention provides a wax cutter used when fabricating a provisional crown, the For making veneer crowns wax cutter having a cutting edge portion for wax molding, and the cutting edge portion is formed with a stepped portion for molding that is similar to the shape of the stepped portion of the metal frame. For making veneer crowns This wax cutter is a wax cutter. The shaping step portion is formed such that recesses corresponding to cusp-like projections of the metal frame and projections corresponding to fissure-like recesses of the metal frame are continuously formed in the inward and outward directions of the veneered crown in the oral cavity.

[0014] In the wax carver according to the present invention, it is preferable that the wax carver for creating veneered crowns is provided with multiple wax carvers having different shaped

Advantages of the Invention

[0015] According to the provisional crown of the present invention, since a stepped portion is formed on the inner side of the provisional crown where the top of the lower front teeth abuts, it is possible to provide the provisional crown with strength to withstand a biting force comparable to that of molars on the upper front teeth, thereby improving the chewing efficiency. There are cusp-like projections located on the lingual side, and fissure-like recesses located more labially than the cusp-like projections, which engage with the apex of the mandibular anterior teeth and are recessed from the cusp-like projections toward the root of the maxillary anterior teeth, which are continuous in the inward and outward directions of the veneered crown. too In addition, according to the wax cutter of the present invention used when fabricating a provisional crown, For making veneer crowns since the cutting edge portion of the wax cutter is configured with a stepped portion for molding that is similar to the shape of the stepped portion of the metal frame, it is possible to provide a wax cutter for fabricating a provisional crown that can efficiently shape the outer contour of the wax pattern created during the fabrication process of the provisional crown. For making veneer crowns In this case, the continuous bumps and ridges were not anticipated in conventional veneer crowns.

Brief Description of the Drawings

[0016] [Figure 1] FIG. 3 is a schematic side view showing an embodiment of the provisional crown according to the present invention. [Figure 2] FIG. 4 is a photograph taken from inside the oral cavity showing the entire state of this embodiment attached to the front teeth. [Figure 3] FIG. 5 is a photograph taken from inside the oral cavity showing a specific embodiment of the provisional crown according to the present invention. [Figure 4] FIG. 6 is a photograph taken from the opposite side of the embodiment shown in FIG. 3. [Figure 5]This figure shows one embodiment of a wax carver for creating veneered crowns used for creating veneered crowns according to the present invention, where (A) is a front view showing the overall configuration and (B) is an enlarged end view in which a part along line XX of (A) is omitted. [Figure 6] This is a schematic side view showing the usage state of one embodiment of the wax carver for creating veneered crowns according to the present invention. [Figure 7] This is a schematic diagram illustrating the occlusion of human teeth. [Figure 8] These diagrams show the occlusal state of the front teeth and molars, with (A) being a schematic diagram of the occlusal state of the front teeth and (B) being a schematic diagram of the occlusal state of the molars. [Figure 9] This is a schematic lateral view of a conventional veneer crown. [Figure 10] This is an intraoral photograph showing a conventional veneer crown cemented to an anterior tooth. [Modes for carrying out the invention]

[0017] An embodiment of the veneer crown according to the present invention will be described with reference to Figures 1 to 4.

[0018] In Figures 1 and 2, human teeth are present in the upper jaw 10 and lower jaw 20, respectively. On the labial side of the upper jaw 10 and lower jaw 20, i.e., on the outside of the oral cavity, the upper jaw 10 has upper incisors 11 and the lower jaw 20 has lower incisors 21. In the upper jaw 10, the veneered crown 30 according to this embodiment is cemented to the upper anterior tooth 11 that forms the abutment tooth. The veneer crown 30 comprises a post-core 31, a metal frame 32, and a veneer portion 33. The base of the post-core 31 is embedded and bonded to the root 11A of the maxillary anterior tooth 11, and the metal frame 32 is cemented to the post-core 31. The veneer portion 33 is fixed from the upper end of the metal frame 32 to the labial outer surface. The veneer portion 33 is formed from a material such as hard resin or ceramic, which is commonly used for crowns and bridges. In the diagram, 13 is the alveolar bone of the maxilla 10, and 14 is the gingiva of the maxilla 10. Also, 23 is the alveolar bone of the mandible 20, and 24 is the gingiva of the mandible 20. Note that the detailed structure of other teeth has been omitted. Also, Figure 1 shows a non-vital tooth from which the pulp (the nerve of the tooth) has been removed, but the structure of the veneered crown is the same as in Figure 1 even in a vital tooth where the pulp has been preserved.

[0019] A stepped portion 34 is formed on the lingual side, i.e., the inner side of the oral cavity, of the metal frame 32 when it is fitted into the mouth. The stepped portion 34 is on the occlusal surface of the molars. in A fissure-like recess 34A, From recess 34A Lingual side Located It is equipped with cusp-like projections 34B. The recess 34A is located on the lateral side of the oral cavity, i.e., the labial side, relative to the cusp-like projection 34B, and is recessed toward the root side of the maxillary anterior tooth 11 compared to the cusp-like projection 34B. Furthermore, as shown in Figure 1, the recess 34A and the cusp-like projection 34B are formed continuously in the inward and outward directions of the veneered crown 30. The apex of the mandibular anterior tooth 21 is engaged with the stepped portion 34. The groove-like recess 34A and lingual cusp-like projection 34B of the stepped portion 34 ensure that the occlusion between the metal frame 32 and the mandibular anterior teeth 21 corresponds to the occlusion between the cusps and grooves of the maxillary molars and mandibular molars, respectively. In this case, the apex of the mandibular anterior tooth 21 is locked in a fissure-like recess 34A that is recessed from the cusp-like projection 34B, while the projection 34B is located on the oral side, i.e., the lingual side, of the recess 34A and protrudes from the recess 34A, so the apex of the mandibular anterior tooth 21 is prevented from sliding outwards into the oral cavity by the projection 34B. This makes it possible to give the upper incisor teeth 11 the strength to withstand occlusal forces comparable to those of the molars.

[0020] In the actual application of the veneer crown 30 to the maxillary anterior teeth 11, as is clear from the photograph in Figure 2, the veneer crown 30 is formed as a connected crown to prosthetize multiple maxillary anterior teeth 11 in a continuous manner. In this case, the cusp-like projections 34B of the veneered crown 30 are formed continuously on the lingual side of the connecting crown. Of the maxillary anterior teeth 11 that are prosthetically restored by the veneered crown 30, a few relatively healthy teeth, or 2 to 6 maxillary anterior teeth 11, constitute the abutment teeth. Figure 2 In the embodiment shown in the photograph, the veneered crown 30 is formed as a continuous connected crown extending from the center to the upper right third tooth to the upper left third tooth of the maxillary anterior teeth 11, and up to the left fourth tooth of the maxillary premolar.

[0021] Figure 3 is a photograph of the entire veneered crown 30 as seen from the inside of the oral cavity before it is attached to the maxillary anterior tooth 11, and Figure 4 is a photograph of the specific embodiment of Figure 3 as seen from the opposite side. As is clear from these diagrams (photographs), the veneered crowns 30 are formed as a continuous series of connected crowns, with five on each side extending from the center of the maxilla 10, including artificial teeth that replace missing teeth. Three on each side extending from the center of the maxilla 10 prosthetize the maxilla anterior teeth 11, while the fourth and fifth prosthetize the premolars, respectively. When fabricating a veneer crown 30 for prosthetic treatment of maxillary anterior teeth 11, it is not necessary to prepare all of the maxillary anterior teeth 11 as abutment teeth. If several of the maxillary anterior teeth 11 are in a state of soundness or better, the veneer crown 30 can be cemented to these abutment teeth. For example, in a case where occlusal support of either the left or right molar is lost, if two or more maxillary anterior teeth 11 remain, and each of them has only slight mobility as an abutment tooth, with good tooth structure in the crown and root, and is in occlusion, then these can be used as abutment teeth, and the veneered crown 30 of this embodiment can be used in prosthetic treatment of the maxillary anterior teeth 11. Furthermore, as shown in Figure 4, even if there are missing teeth, if the requirements for a bridge are met, the veneered crown 30 of this embodiment can be used for the veneered crown and anterior prosthetic teeth of the bridge. figure 4 In this case, the missing teeth are the 3rd from the left (upper left 3), the 5th from the left (upper left 1), and the 7th from the left (upper right 2). Here, the expression in parentheses is the dental formula.

[0022] According to the embodiment described above, the following effects are obtained. In this embodiment, the veneered crown 30 is provided with a stepped portion 34 in the metal frame 32 that forms a fissure-like recess 34A and a lingual cusp-like projection 34B. Therefore, when the maxillary anterior teeth 11 and the mandibular anterior teeth 21 bite together, the upward thrust force from below by the mandibular anterior teeth 21 against the maxillary anterior teeth 11 can be received as an occlusal force in the tooth axis direction via the stepped portion 34. In other words, the lingual cusp-like projection 34B allows the occlusal force, which is normally applied obliquely to the tooth axis of the maxillary anterior teeth 11, to become closer to perpendicular to the tooth axis, and in this state, the maxillary anterior teeth 11 can receive the occlusal force of the mandibular anterior teeth 21. Therefore, the occlusal force when the upper anterior teeth 11 and lower anterior teeth 21 bite together can significantly reduce damage to the upper anterior teeth 11, such as mobility or root fracture. Therefore, the upper anterior teeth 11 can be given substantial strength to withstand occlusal forces comparable to those of molars, thereby improving chewing efficiency. This can improve the quality of life (QOL) for people who have lost occlusal support from their molars.

[0023] Furthermore, in this embodiment, the veneer crown 30 is a connected crown in which multiple maxillary anterior teeth 11 are linked together. Therefore, compared to the case where the maxillary anterior teeth 11 are preserved with a single crown, the maxillary anterior teeth 11 can be protected from mobility and root fracture, thereby improving the prognosis of dental treatment. In other words, by connecting the single-rooted maxillary anterior teeth 11, they can be made to have multiple roots, much like molars, thereby increasing their strength. In this case, if maxillary molars remain, the veneered crown 30 can be formed not only by connecting the maxillary anterior teeth 11, but also by including the maxillary molars as needed. By forming the veneered crown 30 including the maxillary molars in this way, the occlusal force strength of the maxillary anterior teeth 11 can be further improved.

[0024] Furthermore, in the veneered crown 30 of this embodiment, a projection 34B resembling a lingual cusp is provided on the lingual side of the maxillary anterior tooth 11, and by making these projections continuous, an occlusal surface-like shape can be obtained, thereby further improving chewing efficiency.

[0025] In this embodiment, the veneer crown 30 is formed as a connected crown by linking multiple maxillary anterior teeth 11, but depending on the condition of the patient's teeth, it can also be formed as a single crown. However, using a connected crown has the advantage of allowing for more advanced prosthetic treatment of the maxillary anterior teeth 11. Furthermore, this embodiment can also be applied to bridge treatment of the maxillary anterior teeth 11. In this case, if there are missing teeth among the maxillary anterior teeth 11, it can be applied by using artificial teeth to replace the missing teeth. Thus, this embodiment can be applied to bridge treatment of the maxillary anterior teeth 11 regardless of whether or not there are missing teeth among the maxillary anterior teeth 11, and the strength of the bridge can be increased in either case.

[0026] Next, when manufacturing the veneered crown according to this embodiment, For making veneer crowns An embodiment of the wax carver (hereinafter sometimes simply referred to as the wax carver) will be described below.

[0027] Figure 5 shows one embodiment of the wax carver according to the present invention. Figure 5(A) shows an overall front view of the wax carver according to this embodiment, and (B) shows an enlarged end view in which a portion along line XX of (A) is omitted.

[0028] In Figure 5, For making veneer crowns The wax carver 40 is made of a metal material such as stainless steel and comprises a round shaft-shaped handle portion 41 and a head portion 42 connected to the handle portion 41. A cross-shaped knurling 43 for anti-slip purposes is formed in the middle portion of the handle portion 41.

[0029] A cutting edge portion 44 is formed on one side of the head portion 42. A shaping step portion 45 is formed in the middle of this cutting edge portion 44. The molding step portion 45 is provided with projections 45A and recesses 45B that are similar in shape to the fissure-like recesses 34A and cusp-like projections 34B formed in the step portion 34 of the veneered crown 30.

[0030] Next, according to this embodiment, For making veneer crowns This explains how to use Wax Carver 40.

[0031] The fabrication of the veneered crown 30 begins with taking an impression of the patient's teeth, as is the standard procedure. ofFirst, an impression is taken, and then information is collected to reproduce, as accurately as possible, the patient's jaw position, tooth direction, temporomandibular joint function and movement outside the body; in other words, an occlusal registration is performed.

[0032] Based on these impressions and bite registrations, the veneered crown 30, which is a connected crown, is waxed up during the dental laboratory procedure. Unlike a general veneered crown, in this wax-up, a raised area corresponding to the lingual cusp-like projection 34B is formed on the lingual side surface of the metal frame 32 of the veneered crown 30. In this embodiment, the raised area corresponding to the lingual cusp-like projection 34B is applied continuously to the lingual side of the connected crown. Figure 6 shows a wax-up of a model of the maxillary anterior tooth 11. Specifically, wax 50 is attached to the tip of the model of the maxillary anterior tooth 11. On the lingual side of this wax 50, a raised portion of wax corresponding to the stepped portion 34 of the veneered crown 30 is applied, forming a stepped portion 51. The stepped portion 51 is provided with recesses 51A and projections 51B that are similar to the fissure-like recesses 34A and cusp-like projections 34B of the stepped portion 34 of the veneered crown 30.

[0033] The process of forming the stepped portion 51 in the wax 50 differs significantly from the conventional process of forming veneered crowns, making it difficult even for experienced dental technicians. In other words, conventional wax carvers for wax shaping have arrowhead-shaped, needle-shaped, or spatula-shaped blades, and it is extremely difficult to form lingual cusp-like projections 34B using these conventional wax carvers.

[0034] Therefore, the wax carver 40 of this embodiment is used to create a shape on the lingual surface of the wax 50 that is similar to the lingual protuberance projection 34B of the veneered crown 30. Since the cutting edge portion 44 of the wax carver 40 in this embodiment has a shaping step portion 45 formed in advance, after performing appropriate wax-up on the lingual side surface of the wax 50, the cutting edge portion 44 of the wax carver 40 is pressed against the waxed portion and moved to conform to the shape of the lingual inner surface of the patient's oral cavity, making it extremely easy to obtain a step portion 51 on the lingual side surface of the wax 50 that is close to the required shape. Subsequently, if necessary, a precise stepped portion 51 can be easily formed by performing some minor shaping.

[0035] The above Yo Using wax 50 with a stepped portion 51 formed on it, a metal frame 32 is made by dental precision casting using the lost-wax method as per conventional procedures, and the veneered portion 33 is veneered with hard resin or the like to complete the veneered crown 30. The completed veneered crown 30 is adjusted to the shape of the patient's tooth, and the veneered crown 30 is cemented into the oral cavity, thus completing the veneered crown placement process.

[0036] The wax carver 40 of this embodiment described above has the following effects. The veneer crown 30 created by the present invention has a specially shaped stepped portion 34 formed on the lingual side surface of the metal frame 32, making it extremely difficult to create this stepped portion 34 with a conventional wax carver. However, with the wax carver 40 of this embodiment, the stepped portion 51 can be formed on the wax 50 very easily using the molding stepped portion 45. Therefore, by using this wax 50 for dental precision casting, a stepped portion 34 can be easily formed on the metal frame 32, significantly improving the work efficiency of creating the veneered crown 30.

[0037] In particular, when the veneered crown 30 is a connected crown rather than a single crown, it is necessary to continuously provide lingual cusp-like projections 34B along the lingual side of the connected crown of the veneered crown 30. However, by using the wax carver 40 of this embodiment, continuous projections 34B can be easily fabricated. Furthermore, by using the wax carver 40 of this embodiment, anyone can produce wax 50 in a standard shape, eliminating the need to require dental technicians to possess advanced skills. Furthermore, if the shape of the molding step portion 45 of the wax carver 40 in this embodiment is set to an optimal shape in advance, it serves as a reference for applying this shape, allowing for efficient dental work operations. In this case, the shape of the stepped portion 34 of the veneered crown 30 can be divided into multiple patterns according to the condition of the patient's teeth, and wax carvers 40 having shaping stepped portions 45 corresponding to each pattern can be prepared in advance, thereby making the veneered crown 30 more efficiently.

[0038] The above describes the veneered crown 30 according to the present invention. Before While embodiments of the wax carver for crown preparation have been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to these embodiments, and any design changes, etc., that do not depart from the spirit of the present invention are also included.

[0039] for example ,before When creating the crown 30 as a connected crown, it is not always necessary to create the cusp-like projections 34B continuously; they may be created in a discontinuous manner. However, creating them continuously makes it easier to create the projections 34B. In particular, when using the wax carver 40 of this embodiment, continuous creation is easy.

[0040] This embodiment For making veneer crowns The wax carver 40 has a head 42 and a cutting edge 44 at one end of the handle 41, but the head 42 and cutting edge 44 may be provided at both ends of the handle 41, and the shape of the cutting edge 44 may be different. In that case, the cutting edge 44 at one end may be used for rough cutting and the cutting edge 44 at the other end may be used for precision shaping. Also, one of the cutting edges may be formed in the shape of an arrowhead or spatula, as in conventional wax carvers.

[0041] Furthermore, the material of the metal frame 32 and the veneered portion 33 of the veneered crown 30 can be the same as that used for ordinary veneered crowns, or it may be a newly developed material. [Explanation of Symbols]

[0042] 10 Maxillary 11. Upper front teeth 20 Lower jaw 21 Lower front teeth 30 muzzleloader 32 Metal Frames 33 Muzzle 34 Stepped section 34A Fracture-like recess 34B Custed projections 40 For making veneer crowns Wax Carver 41 Handle 42 Head 44 Cutting edge 45. Stepped section for molding 45A protrusion 45B Recess 50 wax 51 Stepped section 51A Recess 51B Protrusion

Claims

1. A veneer crown that is cemented to an upper anterior tooth, wherein the veneer crown comprises a metal frame, and a stepped portion is formed on the lingual side of the metal frame when it is in the mouth, the apex of the lower anterior tooth abuts against the stepped portion, and the stepped portion comprises a cusp-like projection located on the lingual side of the stepped portion when the veneer crown is in the mouth, and a fissure-like recess located labially relative to the cusp-like projection, the apex of the lower anterior tooth being engaged with the cusp-like projection, and recessed from the cusp-like projection toward the root of the upper anterior tooth, and the cusp-like projection and the fissure-like recess are formed continuously in the inward and outward directions of the veneer crown.

2. The veneered crown according to claim 1, wherein the veneered crown is formed as a continuous connected crown spanning a plurality of maxillary anterior teeth, and the cusp-like projection is formed continuously on the lingual side of the connected crown.

3. A wax carver for creating a veneer crown, used when manufacturing a veneer crown according to claim 1 or claim 2, wherein the wax carver for creating a veneer crown comprises a cutting blade for wax molding, the cutting blade has a molding step formed thereon that is similar in shape to the step of the metal frame, and the molding step has a recess corresponding to a cusp-like projection of the metal frame and a projection corresponding to a fissure-like recess of the metal frame, which are continuously formed in the inward and outward direction of the veneer crown.

4. A wax carver for creating a veneer crown according to Claim 3, wherein the recesses corresponding to the cusp-like projections and the fissure-like recesses of the shaping step portion formed on the cutting edge portion are provided, and a plurality of wax carvers for creating veneer crowns are provided, each having a different shape of the shaping step portion corresponding to a different shape of veneer crown.

Images