Dental product formed by 3D printing

Abstract

The utility model relates to a kind of dental products formed by 3D printing, it includes: first body, it includes the part made of first material;Second body is connected to first body, and it includes the part made of second material, wherein, first material and second material have different color or transparency.The dental product provided by the utility model meets at least one use requirement.

Description

Technical Field

[0001] This utility model relates to a dental product, specifically, to a dental product formed by 3D printing. Background Technology

[0002] With the development of dentistry, dental products used in implant restorations, fixed restorations, and orthodontic restorations have seen a variety of applications and processing techniques. For example, there is the need for aesthetically pleasing post-treatment coloring.

[0003] Dental products include, for example, complete dentures, crowns and bridges, orthodontic appliances, and dental molds. Various manufacturing processes exist for these products, with 3D printing being a currently popular method.

[0004] 3D photopolymerization printing is currently the main method for manufacturing dental products, and the precision of 3D photopolymerization printing meets the market's demand for precision in dental products.

[0005] Patent document CN116635214A discloses the use of multiple materials to additively manufacture target teeth. The only difference between the materials is the color and texture. Teeth obtained from multiple colored materials are similar in color to real human teeth.

[0006] Patent document CN118201759A discloses the use of multiple materials to additively manufacture target teeth, the external color of which is close to the original teeth to be replaced, while the internal structure of the target teeth can be made of different resins.

[0007] In terms of aesthetics, existing technologies use materials of different colors to construct different parts to obtain dental products.

[0008] Therefore, dental products are needed to meet at least one user need. Utility Model Content

[0009] This invention provides a 3D-printed dental product that can meet diverse needs.

[0010] This invention provides a 3D-printed dental product comprising: a first body including a portion made of a first material; and a second body connected to the first body and including a portion made of a second material, wherein the first material and the second material have different colors or transparency.

[0011] In some embodiments, the second body includes a portion made of a third material, which and the third material have different toughness, hardness, or strength. These properties are advantageous, for example, in preventing breakage.

[0012] In some embodiments, the first body of the dental product is a baseplate, and the second body is a crown.

[0013] In some embodiments, the crown includes a portion made of a third material that is more resilient than the second material.

[0014] In some embodiments, the portion made of a third material is: the part of the crown that connects to the base; or the end of the crown away from the base. A resilient end of the crown helps to prevent crown damage.

[0015] In some embodiments, the base includes a portion made of a third material, the third material being more resilient than the second material.

[0016] In some embodiments, the dental product is a tooth.

[0017] In some embodiments, the contact interface between the first body and the second body is substantially horizontal.

[0018] In some embodiments, the first body is designed to shield or surround the second body on at least one side.

[0019] In some embodiments, along the direction from the first body to the second body, the cross-sectional area of ​​the first body gradually decreases, and the cross-sectional area of ​​the second body gradually increases.

[0020] In some embodiments, the dental product is an invisible denture, the first body being a clasp; or the dental product is a denture, the first body being the gum, the second body being a tooth, and the end of the second body away from the gum being transparent or translucent, the rest of the second body being white; or the dental product is an orthodontic transfer tray, the first body being less rigid than the second body.

[0021] In some embodiments, the dental product is a crown bridge, the first body comprising: a first crown mounted on an abutment tooth and a prosthetic crown indirectly connected to the first crown; the second body is configured to connect the first crown and the prosthetic crown, wherein the toughness of the second body is greater than that of the first body.

[0022] In some embodiments, the dental product is a jaw pad, with a first body being the wearing side of the jaw pad and a second body being the occlusal side of the jaw pad.

[0023] The dental products provided by this invention meet at least one usage requirement. Some dental products manufactured using 3D printing eliminate the need for existing manual procedures. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be regarded as a limitation on the scope of protection.

[0025] Figure 1 This is a schematic diagram of a complete denture according to some embodiments.

[0026] Figure 2 This is a schematic diagram of a complete denture according to some embodiments.

[0027] Figure 3 This is a schematic diagram of a complete denture according to some embodiments.

[0028] Figures 4A-4B This is a schematic diagram of teeth according to some embodiments.

[0029] Figures 5A-5C This is a schematic diagram of teeth according to some embodiments.

[0030] Figures 6A-6C This is a schematic diagram of teeth according to some embodiments.

[0031] Figure 7 The image shows invisible dentures according to some embodiments.

[0032] Figure 8 Dentures according to some embodiments are shown.

[0033] Figure 9 A crown bridge according to some embodiments is shown.

[0034] Figure 10 A tooth model according to some embodiments is shown. Detailed Implementation

[0035] The following description is merely exemplary in nature and is not intended to limit the present invention, its application, or its uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. Those skilled in the art will understand that any components or features of different embodiments can be combined to obtain new embodiments, which also fall within the scope of this application, provided they do not contradict each other.

[0036] Figure 1 This is a schematic diagram of a complete denture according to some embodiments. The complete denture 100 includes a gingival portion (or base) 110 and a dental portion 120. The gingival portion 110 is formed using a first type of material A, and the dental portion 120 is formed using a second type of material B. The gingival portion 110 and the dental portion 120 are different colors.

[0037] Figure 2This is a schematic diagram of a complete denture according to some embodiments. The complete denture 200 includes a gingival portion 210 and a dental portion 220. In some scenarios, the complete denture 200 is not in the patient's mouth and may be damaged by impact or drop. For example, when the patient removes the complete denture from their mouth (e.g., for cleaning), it may unintentionally fall out. Because the complete denture 200 includes a gingival portion 210 formed of a first type of material and a dental portion 220 formed of a second type of material, the complete denture 200 is prone to breakage at the junction of the gingival portion and the dental portion. To at least overcome this problem, a tough material is used at the junction of the gingival portion and the dental portion. Figure 2 In the illustrated embodiment, the complete denture 200 also includes a connecting portion 230 (shown by dashed lines) made of a third type of material C. The third type of material C is a tough material that is not easily broken in drop tests. In some embodiments, the connecting portion 230 is the same color as the gingival portion 210 or the tooth portion 220.

[0038] It is understandable that toughening materials may be used only in a single connection (single tooth part) or in multiple connection parts (multiple tooth parts).

[0039] Figure 3 This is a schematic diagram of a complete denture according to some embodiments. The complete denture 300 includes a gingival portion 310 and a dental portion 320. In some scenarios, the complete denture 300 is not in the patient's mouth and may be damaged by impact or drop. For example, when the patient removes the complete denture from their mouth (e.g., for cleaning), it may unintentionally fall out. Since the dental portion 320 of the complete denture 300 may be made of brittle or fragile materials (ceramic materials), the dental portion 320 of the complete denture 300 (especially the incisal portion of the anterior teeth) may be damaged by impact. At least to overcome this problem, a tough material is used at the end of the dental portion 320 away from the gingival portion 310. Figure 3 In the illustrated embodiment, the complete denture 300 also includes a reinforcing portion 330 (shown by dashed lines) made of a third type of material D. The third type of material D is a tough material that is not easily broken in drop tests. In some embodiments, the reinforcing portion 330 is the same color as the tooth portion 320.

[0040] It is understandable that toughening materials may be used in a single reinforced section (a single tooth section) or in multiple reinforced sections (multiple tooth sections).

[0041] Figures 4A-4BThis is a schematic diagram of a tooth according to some embodiments. The tooth 400 includes a first portion 410 near the gum line and a second portion 420 away from the gum line during use, the interface between the first portion 410 and the second portion 420 being planar. For aesthetic and commercial success, the tooth 400 is desired to have a gradient or gradation of color, for example, a gradual deepening of the milky white from the first portion 410 to the second portion 420, or a gradual increase in transparency (ideally as shown below). Figure 4B (As shown).

[0042] The first part 410 of the tooth 400 is made of a first type of material A, and the second part 420 of the tooth 400 is made of a second type of material B.

[0043] Figures 5A-5C This is a schematic diagram of a tooth according to some embodiments. The tooth 500 includes a first portion 510 near the gum line and a second portion 520 away from the gum line during use, the interface between the first portion 510 and the second portion 520 being non-planar. For aesthetic and commercial success, the tooth 500 is desired to have a gradient or gradation of color, for example, a gradual deepening of the milky white color or a gradual increase in transparency from the first portion 510 to the second portion 520.

[0044] Figures 5A-5C In the illustrated embodiment, the second portion 520 is embedded in the first portion 510. The cross-sectional area of ​​the second portion 520 gradually decreases along the direction close to the gum line (or close to the first portion), and the change in embedding thickness creates a visually gradient color in the tooth 500. In some embodiments, the white second portion 520 is embedded in the red first portion 510 to a depth of 10% to 50% of the tooth length, preferably 15% to 40%.

[0045] Figure 5A Two planes 501 and 502 are shown for the tooth 500, with plane 501 being closer to the gum line (not shown) than plane 502. Figure 5B A cross-sectional view along plane 501 is shown. Figure 5C A cross-sectional view along plane 502 is shown, with the dashed line marking the boundary between the first portion 510 and the second portion 520. From plane 501 to plane 502, the cross-sectional area of ​​the second portion 520 gradually increases, while the cross-sectional area of ​​the first portion 510 gradually decreases.

[0046] exist Figures 5A-5C In the illustrated embodiment, the first portion 510 essentially encloses the second portion 520.

[0047] Figures 6A-6CThis is a schematic diagram of a tooth according to some embodiments. The tooth 600 includes a first portion 610 on the labial side and a second portion 620 on the lingual side, the interface between the first portion 610 and the second portion 620 being planar or curved. For aesthetic and commercial success, the tooth 600 is desired to have a gradient or gradation of color, for example, a gradual deepening of the milky white color or a gradual increase in transparency from the gum line (not shown) to the tooth.

[0048] exist Figures 6A-6C In the illustrated embodiment, the first portion 610 covers the second portion 620 on the labial side. The cross-sectional area of ​​the second portion 620 gradually decreases along the direction closer to the gum line (or closer to the first portion).

[0049] Figure 6A Two planes 601 and 602 for tooth 600 are shown, with plane 601 being closer to the gum line (not shown) than plane 602. Figure 6B A cross-sectional view along plane 601 is shown. Figure 6C A cross-sectional view along plane 602 is shown, with the dashed line marking the boundary between the first portion 610 and the second portion 620. From plane 601 to plane 602, the cross-sectional area of ​​the second portion 620 gradually increases, while the cross-sectional area of ​​the first portion 610 gradually decreases.

[0050] exist Figures 6A-6C In the illustrated embodiment, the first portion 610 is on one side of the second portion 620.

[0051] Those skilled in the art will understand that the first part can be designed to shield or surround the second part on at least one side.

[0052] In some embodiments, a complete denture includes a denture base and a plurality of teeth fixed to the denture base, with a relining material applied to the tissue surface of the denture base. In the prior art, self-curing resin is typically used to directly reline the tissue surface of the denture base within the patient's mouth. In this application, when manufacturing a complete denture, for example using light-curing 3D printing, a relining layer (e.g., made of acrylic soft plastic or silicone rubber) is cured onto the tissue surface of the denture base.

[0053] Figure 7 A clear denture according to some embodiments is shown. The clear denture 700 includes clasps 710, gingiva 720, and teeth 730. Prior art, for example, uses one material to manufacture the teeth, and another material to manufacture the gingiva and clasps, which are then bonded together. In this application, the teeth 730 are made of a first-class material A, the gingiva 720 connected to the teeth 730 is made of a second-class material B, and the clasps 710 are made of a third-class material C (e.g., transparent). In this way, the concealment of the clasps is further enhanced.

[0054] Figure 8A denture according to some embodiments is shown. The denture 800 includes a gingiva 810 and a tooth 820, manufactured using, for example, light-curing 3D printing. The tooth 820 has a first end 822 near the gingiva 810 and a second end 824 away from the gingiva 810. For example, for aesthetic or commercial success reasons, the first end 822 has a sharper angle than a normal tooth, and this "sharp" end is embedded in the gingiva. Alternatively or additionally, the second end 824 is transparent or translucent, and the remainder of the tooth 820 is white.

[0055] Figure 9 A crown bridge according to some embodiments is illustrated. The crown bridge 900 includes at least one crown 910 and a prosthetic crown 920 connected to the crown 910. The crown 910 is used to mount on a cut abutment tooth, and the prosthetic crown 920 is used to replace a missing crown in the patient's mouth. In light-curing 3D printing applications, a single material is typically used to construct the entire crown bridge 900. Recognizing the risk of fracture in practical use, the inventors have provided a solution to strengthen the connection portion 930 between the crown 910 and the prosthetic crown 920. In some embodiments, the connection portion 930 has increased thickness; however, this may be difficult to accommodate small gaps between teeth in the patient's mouth. In some embodiments, the connection portion 930 has higher fracture strength than either the crown 910 or the prosthetic crown 920. It is understood that the connection portion 930 may be made of one or more materials. In some embodiments, the connection portion 930 includes different portions made of different materials.

[0056] Figure 10 A tooth model according to some embodiments is shown. The tooth model 1000 includes a crown 1010 and a gingiva 1030, which are manufactured as a single unit using, for example, light-curing 3D printing. A color layer 1020 is then manually applied to the gingiva 1030 to obtain the desired tooth model. At least to avoid manual manipulation, different materials are cured separately to form the crown and gingiva. Related manufacturing details are disclosed in Chinese patent applications No. 202411553161.3 and No. 202411553164.7.

[0057] In some embodiments, the fabricated dentures are also considered for use in patient medical examinations. For example, when a patient undergoes an examination using a CBCT scanner, a contrasting material needs to be applied to the teeth before the examination to facilitate visualization of the dentures. At least for the purpose of omitting this step, this application uses a contrasting material during the fabrication of the dentures. For example, a contrasting component is added to the raw resin of the denture. The contrasting material is immediate restoration denture resin (V1.0) or immediate restoration denture model resin produced by Heig Technology.

[0058] In some embodiments, this application provides a jaw pad comprising a wearing side that attaches to the teeth and an opposing occlusal side. Existing jaw pads are made from a single material; if the material is too hard, the patient experiences a poor experience when using the jaw pad; if the material is too soft (i.e., less hard), the degree of deformation of the jaw pad during occlusion may be undesirable. The jaw pad of this application has a wearing side that is less hard than the occlusal side, which satisfies both wearing comfort and occlusal function.

[0059] In some embodiments, this application provides an orthodontic transfer tray. Similar to the jaw pad of the foregoing embodiments, the orthodontic transfer tray has a first portion and a second portion, wherein the first portion is less rigid than the second portion.

[0060] The terms “comprising” and “having” as used herein are inclusive and therefore specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring performance in the particular order discussed or described, unless the order is specifically specified. It should also be understood that additional or alternative steps may be employed.

[0061] The description of this utility model is merely exemplary in nature, and therefore, modifications that do not depart from the spirit and scope of this utility model are intended to be within its scope. Such modifications should not be considered as departing from the spirit and scope of this utility model.

Claims

1. A dental product formed by 3D printing, characterized in that, include: The first body comprises a portion made of a first material; The second body is connected to the first body and includes a portion made of a second material. The first material and the second material have different colors or transparency; The second body includes a portion made of a third material, the second material and the third material having different toughness or strength.

2. The dental product according to claim 1, characterized in that, The dental product has a base as its first component and a crown as its second component.

3. The dental product according to claim 2, characterized in that, The crown includes a portion made of a third material, which has greater toughness than the second material.

4. The dental product according to claim 3, characterized in that, The part made of the third material is: The portion of the crown that connects to the base; or The end of the crown that is away from the base.

5. The dental product according to claim 2, characterized in that, The base includes a portion made of a third material, which has greater toughness than the second material.

6. The dental product according to claim 1, characterized in that, The dental product in question is a tooth.

7. The dental product according to claim 6, characterized in that, The contact interface between the first body and the second body is basically horizontal.

8. The dental product according to claim 6, characterized in that, The first body is designed to shield or surround the second body on at least one side.

9. The dental product according to claim 8, characterized in that, Along the direction from the first body to the second body, the cross-sectional area of ​​the first body gradually decreases, while the cross-sectional area of ​​the second body gradually increases.

10. The dental product according to claim 1, characterized in that, The dental product described is an invisible denture, the primary component of which is a clasp; or The dental product is a denture, with the gum as the first body and the teeth as the second body. The end of the second body furthest from the gum is transparent or translucent, while the rest of the second body is white; or The dental product is an orthodontic transfer tray, and the hardness of the first body is lower than that of the second body.

11. The dental product according to claim 1, characterized in that, The dental product is a crown bridge, the first body comprising: a first crown installed on the abutment tooth and a prosthetic crown indirectly connected to the first crown; the second body is configured to connect the first crown and the prosthetic crown, wherein the toughness of the second body is greater than that of the first body.

12. The dental product according to claim 1, characterized in that, The dental product is a jaw pad, the first body being the wearing side of the jaw pad, and the second body being the occlusal side of the jaw pad.

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