Integrated artificial ceramic dental implant

Abstract

The utility model relates to the technical field of dental implant, in particular to an integrated artificial ceramic dental implant which comprises an implant root implanted into a gum and an abutment connected with a dental crown, and the implant root and the abutment are integrally formed; wherein the implant root part comprises a threaded part, a neck part and a transition part which are sequentially connected from bottom to top, an end taper angle is arranged at the bottom end of the threaded part, the neck part is cylindrical, and the transition part is in a necking shape; the base station is arranged on the top surface of the neck part and is in the shape of a circular truncated cone, a tangential section is arranged on the base station, the tangential section is perpendicular to the end surface of the base station, and the length of the tangential section is smaller than that of the base station. In the manufacturing process, digital scanning can be conducted on the to-be-planted position of a patient firstly, then 3D printing is conducted, the adaptive personalized artificial implant is obtained, the manufacturing procedure can be simplified, and the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental implant technology field especially relates to a kind of integrated artificial porcelain dental implant. BACKGROUND

[0002] Implant tooth is the implant root part made of artificial material, is implanted into the alveolar bone of edentulous area by surgery, after implant root part and alveolar bone are combined stably, then install abutment and dental crown on it, to complete the repair of tooth.

[0003] The material of implant root part has metal and its alloy implant material (such as: pure iron, tin alloy), ceramic implant material (such as: bioinert ceramic, surface active bio-ceramics);High molecular implant material (such as poly (methyl methacrylate) methyl alcohol, ultra-high molecular weight polyethylene, polytetrafluoroethylene, poly alum, silicon resin etc.);Composite implant material (such as: the composite material of bio-ceramics and metal etc.).

[0004] However, the implant body of the existing market at present is mostly composed of implant root part and abutment of split type, and the structure is prone to loose defect at connecting part after long-term use. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide an integrated artificial porcelain dental implant.

[0006] To solve the above problems, the technical scheme adopted by the utility model is:

[0007] An integrated artificial porcelain dental implant, comprising: implant root part implanted into gum and abutment connected with dental crown, wherein the implant root part and the abutment are integrally formed.

[0008] The implant root part comprises thread part, neck part and transition part connected in sequence from bottom to top, the bottom end of the thread part is provided with end head taper angle, the neck part is cylindrical, and the transition part is of closing-in type.

[0009] The abutment is arranged on the top surface of the neck part, and is in the shape of circular truncated cone, and is provided with tangent plane thereon, the tangent plane and the end surface of the abutment form a preset angle, and the length of the tangent plane is less than the length of the abutment.

[0010] As an embodiment of the utility model, the upper tangent length of the tangent plane is 0.5-0.6 of the diameter of the top surface of the abutment.

[0011] As an embodiment of the utility model, the length of the tangent plane is 0.75-0.8 of the length of the abutment.

[0012] In one embodiment of this utility model, the threaded portion includes a tapered thread portion and a cylindrical thread portion disposed on the tapered thread portion, wherein the length ratio of the tapered thread portion to the cylindrical thread portion is (1.6~1.8):1.

[0013] In one embodiment of this utility model, the length of the threaded portion is 8mm to 14mm.

[0014] In one embodiment of this utility model, the sealing surface diameter of the cylindrical threaded portion is 4~4.2mm, and the major diameter of the sealing surface of the tapered threaded portion is 4.7~4.9mm.

[0015] In one embodiment of this utility model, the diameter of the neck is 4.8~5.2mm and the length is 2.1~2.3mm.

[0016] In one embodiment of this utility model, the base has a length of 4.8~6.3mm and a top surface diameter of 3~3.5mm.

[0017] As one embodiment of this utility model, the preset angle ranges from 90° to 100°.

[0018] In one embodiment of this utility model, a V-groove is provided at the lower part of the threaded portion.

[0019] The beneficial effects of adopting the above technical solution are as follows:

[0020] The integrated artificial ceramic dental implant provided in this embodiment is made of ceramic. During manufacturing, the patient's implantation site can be digitally scanned first, and then a personalized 3D printing process can be used to obtain a suitable artificial implant. For example, an extraoral scanner can be used to scan first, then the design can be done in software, and finally the artificial implant blank can be obtained using a ceramic 3D printing system and sintered. This simplifies the manufacturing process and reduces costs. In addition, by setting a tangential section on the abutment, and the length of the tangential section is less than the length of the abutment, the connection strength between the abutment and the neck can be further improved, thereby improving the overall strength. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an integrated artificial ceramic dental implant provided in an embodiment of this utility model.

[0022] Figure 2 yes Figure 1 The main view.

[0023] Figure 3 yes Figure 1 Top view.

[0024] Figure 4 yes Figure 1 Side view.

[0025] Figure 5 This is a schematic diagram of another integrated artificial ceramic dental implant provided in this embodiment of the present invention.

[0026] Figure 6 This is a structural schematic diagram of another integrated artificial ceramic dental implant provided in this embodiment of the present invention.

[0027] in:

[0028] 100 central incisors, 200 lateral incisors, 300 canines, 400 premolars, 500 molars;

[0029] 1. Root of the implant, 101. Threaded part, 101-1. End cone angle, 101-2. Tapered threaded part, 101-3. Cylindrical threaded part, 101-4. V-groove, 102. Transition part, 103. Neck, 2. Abutment, 201. Tangential section. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0031] This utility model embodiment provides an integrated artificial ceramic dental implant, such as Figures 1-4 As shown, it includes: an implant root 1 implanted into the dental alveolar bone and an abutment 2 connected to the crown, wherein the implant root 1 and the abutment 2 are integrally formed;

[0032] The root of the implant 1 includes a threaded part 101, a neck 102 and a transition part 103 connected sequentially from bottom to top. The bottom end of the threaded part 101 is provided with an end cone angle 101-1, the neck 102 is cylindrical, and the transition part 103 is a constricted type.

[0033] The base 2 is disposed above the transition portion 103. It is frustum-shaped and has a tangential surface 201. The tangential surface 201 is at a preset angle α with the end face of the base 2, and the length of the tangential surface 201 is less than the length of the base 2.

[0034] The artificial implant provided in this embodiment is suitable for scenarios requiring tooth implantation. During implantation, medical staff bite the tool onto the end face and tangential surface 201, rotate the artificial tooth implant, and use the end cone angle 101-1 and the threads on the threaded part 101 to rotate and bite the implant root 1 onto the jawbone. Then, the crown is placed on the abutment 2.

[0035] Among them, such asFigure 2 It is known that no threads are provided on the end cone angle 101-1, which can prevent stress concentration and improve the strength of the implant root. The thread of the threaded part 101 is arc-shaped. This shape can prevent the implant root 1 from breaking due to stress concentration at the tip, and also allow sufficient space for bone cell growth to improve the connection strength. In addition, by setting the transition part 103 as a closed type, the outer diameter of the neck 102 is larger than the outer diameter of the bottom of the abutment 2. This can ensure that the size of the threaded part 101 below the neck 102 is compatible with the alveolar socket on the tooth to be implanted (for example, it can ensure that the gap between the occlusal part of the abutment 2 and the opposing tooth is in a suitable size). It can also ensure that the abutment 2 on the neck 102 is compatible with the crown while ensuring mechanical strength. At the same time, the design of the abutment 2 can avoid grinding after the implant is inserted into the alveolar socket.

[0036] The integrated artificial ceramic dental implant provided in this embodiment is made of ceramic, specifically modified zirconia (see Chinese Invention Patent Publication No. CN 110540426A). The modified zirconia has a density of 99.3%~99.7%, an average grain size of 112~170 nanometers, and a chemical composition as shown in the following formula:

[0037] (100-abcde)mol%ZrO2+amol%Y2O3+bmol%CaO+cmol%Al2O3+dmol%SiO2+emol%TiO2; where a,b,c,d,e are molar percentages, 3.00≤a≤5.00, 0.002≤b≤0.04, 0.20≤c≤0.42, 0.02≤d≤0.12, 0.002≤e≤0.035.

[0038] During manufacturing, the patient's implantation site can be digitally scanned first, and then a personalized 3D printing process can be used to obtain a suitable artificial implant. For example, an extraoral scanner can be used to scan first, then the design can be done in software, and finally a ceramic 3D printing system can be used to obtain the artificial implant embryo, which is then sintered. This simplifies the manufacturing process and reduces costs. In addition, by setting a tangential surface 201 on the abutment 2, and the length of the tangential surface 201 is less than the length of the abutment 2, the connection strength between the abutment 2 and the neck 102 can be further improved, thereby improving the overall strength.

[0039] Among them, such as Figure 2 and Figure 3As shown, the upper chord length L4 of the chord section 201 is 0.5~0.6 of the top surface diameter D3 of the abutment 2, preferably 0.5; the length h4 of the chord section 201 is 0.75~0.8 of the length h3 of the abutment 2, preferably 0.78. By setting the value of the upper chord length L4, this utility model can ensure the installation performance of the crown and the prosthesis outside the crown, while also ensuring the rotational torque of the medical staff. 10 This allows it to be compatible with tools such as wrenches.

[0040] Furthermore, the tangential surface 201 forms a preset angle α with the end face of the abutment 2, with the angle range being 90°~100°, to facilitate the fixation of tools during dental implantation. For example, α is 90°.

[0041] The dimensions of each component in the integrated dental implant provided in this embodiment of the invention are not specifically limited. In one possible implementation, the length h1 of the threaded portion 101 is 8mm to 14mm, preferably 8mm, 10mm, 12mm, or 14mm. The threaded portion 101 includes a tapered threaded portion 101-2 and a cylindrical threaded portion 101-3 disposed on the tapered threaded portion 101-2. The length h1 of the tapered threaded portion 101-2 is... 11 The length h of the cylindrical threaded portion 101-3 12 The ratio is (1.6~1.8):1, preferably 1.6:1; by setting the tapered thread portion 101-2 and the cylindrical thread portion 101-3, it can be ensured that the root of the implant 1 can remain relatively stable during the operation.

[0042] Furthermore, the sealing surface diameter D of the cylindrical threaded portion 101-3 11 The diameter D of the sealing surface of the tapered thread portion 101-2 is 4~4.2mm. 12 The diameter is 4.7~4.9mm; the diameter D2 of the neck 102 is 4.8~5.2mm, the length h2 is 2.1~2.3mm, preferably D2 is 5mm, and h2 is 2.2mm; the total length h3 of the base 2 and the transition part 103 is 4.8~6.3mm, the top surface diameter D3 is 3~3.5mm, preferably the total length h3 is 4.8mm or 6.3mm, and the top surface diameter D3 is 3.2mm.

[0043] Furthermore, considering the situation where some special groups have insufficient gum hardness, this embodiment of the invention also provides another type of integrated artificial ceramic dental implant, such as... Figure 5 and Figure 6As shown, based on the aforementioned structure, a V-groove 101-4 is provided at the lower part of the threaded portion 101. By providing this V-groove 101-4, it is possible to conveniently implant the entire artificial implant while ensuring the strength after implantation.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A one-piece artificial ceramic dental implant, characterized in that, It includes: An implant root (1) is implanted into the dental alveolar bone and an abutment (2) is connected to the crown, wherein the implant root (1) and the abutment (2) are integrally formed; The root of the implant (1) includes a threaded part (101), a neck (102) and a transition part (103) connected from bottom to top. The bottom end of the threaded part (101) is provided with an end cone angle (101-1), the neck (102) is cylindrical, and the transition part (103) is a constricted type. The base (2) is disposed above the transition part (103), and it is in the shape of a frustum. A tangential surface (201) is provided on it. The tangential surface (201) is at a preset angle to the end face of the base (2), and the length of the tangential surface (201) is less than the length of the base (2).

2. The integrated artificial ceramic dental implant according to claim 1, characterized in that, The upper chord length of the tangential section (201) is 0.5 to 0.6 times the diameter of the top surface of the base (2).

3. The integrated artificial ceramic dental implant according to claim 2, characterized in that, The length of the tangential section (201) is 0.75 to 0.8 times the length of the base (2).

4. The integrated artificial ceramic dental implant according to claim 2, characterized in that, The threaded portion (101) includes a tapered threaded portion (101-2) and a cylindrical threaded portion (101-3) disposed on the tapered threaded portion (101-2), wherein the length ratio of the tapered threaded portion (101-2) to the length of the cylindrical threaded portion (101-3) is (1.6~1.8):

1.

5. The integrated artificial ceramic dental implant according to claim 4, characterized in that, The length of the threaded portion (101) is 8~14mm.

6. The integrated artificial ceramic dental implant according to claim 4, characterized in that, The sealing surface diameter of the cylindrical threaded portion (101-3) is 4~4.2mm, and the major diameter of the sealing surface of the tapered threaded portion (101-2) is 4.7~4.9mm.

7. The integrated artificial ceramic dental implant according to claim 1, characterized in that, The neck (102) has a diameter of 4.8~5.2 mm and a length of 2.1~2.3 mm.

8. The integrated artificial ceramic dental implant according to claim 1, characterized in that, The total length of the base (2) and the transition part (103) is 4.8~6.3mm, and the top surface diameter is 3~3.5mm.

9. The integrated artificial ceramic dental implant according to claim 1, characterized in that, The preset angle ranges from 90° to 100°.

10. The integrated artificial ceramic dental implant according to claim 1, characterized in that, The lower part of the threaded portion (101) is provided with a V-groove (101-4).

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