Dental implant for multiple roots and dental implant

Abstract

The present invention provides a dental implant for multiple tooth roots, comprising a tooth root portion, wherein the tooth root portion comprises a proximal gingival end portion, more than three root middle portions and more than three tooth proximal tip portions, wherein the tooth proximal tip portions are respectively connected to the proximal gingival end portion through the root middle portion, and an end surface of the proximal gingival end portion is provided with a gum fitting structure, wherein the gum fitting structure comprises two convex tips and two arc-shaped recessed portions, wherein the convex tips and the arc-shaped recessed portions are alternately arranged in sequence and are connected end to end; the dental implant can be completely fitted with the alveolar bone in the gum after installation, so that after the dental implant is installed, it is no longer necessary to grind the alveolar bone to make the alveolar bone flush with the dental implant, thereby reducing the pain of the patient, and after the dental implant is installed, the height of the middle portion of the gum is still greater than the height of the lingual side and the labial side, thereby facilitating the discharge of food residues, thereby avoiding the problem that after the existing alveolar bone is polished and the end surface of the alveolar bone is flush with the height, the food residues are easily retained between the teeth and are difficult to discharge.

Description

Technical Field

[0001] The invention relates to a dental implant for multiple tooth roots and an implanted tooth. Background Art

[0002] Dental implants are made into cylinders or other shapes similar to tooth roots, and are implanted into the alveolar bone of the edentulous area through a minor surgical procedure. After more than 3 months, when the artificial tooth root is tightly integrated with the alveolar bone, a porcelain crown is made on the artificial tooth root. Dental implants can achieve a restoration effect that is very similar to the function, structure and aesthetic effect of natural teeth, and have become the preferred restoration method for more and more patients with edentulous teeth.

[0003] As one of the important parts of dental implants, dental implants play the role of tooth roots and achieve the purpose of fixation in the alveolar bone. Currently, existing dental implants usually adopt a shape such as a cylinder, and a thread is set on the surface of the cylinder to achieve a more stable installation. The contact surface between the existing dental implant and the alveolar ridge adopts a flat structure. Since the alveolar bone at the alveolar ridge is an arc-shaped end face, after the dental implant is installed in the alveolar bone, the alveolar bone at the alveolar ridge needs to be polished so that the end face of the alveolar bone at the alveolar ridge is flush with the top surface of the dental implant. In this way, polishing the alveolar bone takes a long time for the patient to recover, resulting in a long waiting time for the installation of the crown. In addition, since the final alveolar bone after installation forms a flat end face, food residues are easily retained between the teeth and are not easy to overflow, which can easily corrode the teeth or cause gingival inflammation and other problems.

[0004] The above issues are those that should be considered and addressed during the design and production of dental implants and dental implants. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-root dental implant and dental implant to solve the problems in the prior art that grinding of the alveolar bone causes a long recovery time for the patient, resulting in a long waiting time for the installation of the crown, and the final alveolar bone after installation forms a flat end surface, which easily causes food residues to be retained between the teeth and is not easy to overflow.

[0006] The technical solution of the present invention is:

[0007] A dental implant for multiple roots comprises a root portion, wherein the root portion comprises a proximal gingival end portion, three or more middle root portions and three or more proximal apical portions, wherein the proximal apical portions are connected to the proximal gingival end portion through the middle root portion respectively, and an end surface of the proximal gingival end portion is provided with a gingival fitting structure, wherein the gingival fitting structure comprises two convex apical portions and two arcuate concave portions, wherein the convex apical portions and the arcuate concave portions are arranged alternately in sequence and are connected end to end.

[0008] Furthermore, the two convex tips are respectively fitted with the arc-shaped end surfaces of the tooth roots in the gums, and the two arc-shaped concave parts are respectively fitted with the lingual side and the labial side of the gums.

[0009] Furthermore, three abutments are included, each of which includes a crown connection part and a root connection part. The crown connection part is arranged on the root connection part, and the root connection part is connected to the gingival end of the root part. The root connection part adopts a boss structure, and the gingival end is provided with a positioning groove. The positioning groove adopts three grooves arranged in sequence to form an annular shape, and the boss structures are respectively arranged corresponding to the grooves.

[0010] Furthermore, the groove is circular, elliptical or polygonal, and the boss structures are respectively adapted to the grooves.

[0011] Furthermore, it also includes three connecting shafts. The root part is respectively provided with connecting grooves for the connecting shafts to penetrate. The connecting grooves are respectively arranged below the grooves, and the connecting grooves are respectively connected to the grooves. The connecting shafts and the bases are arranged one by one, and the middle part of the base is respectively provided with through holes for the connecting shafts to pass through.

[0012] Furthermore, the crown connection ends of the connecting shaft are respectively provided with inner concave threading grooves, the root connection ends of the connecting shaft are provided with external threads, and the connecting grooves are provided with internal threads that match the external threads.

[0013] Furthermore, a retaining portion is provided in the middle of the connecting shaft, the diameter of the retaining portion is larger than the diameter of the connecting shaft, the retaining portion and the connecting shaft together form an inverted convex axial cross-section, and an inverted convex retaining groove is correspondingly provided in the through hole of the base.

[0014] Furthermore, the crown connecting ends of the connecting shaft are connected to the crowns through adhesive layers respectively, and a through opening for accommodating the adhesive layer is provided in the middle of the crown.

[0015] Furthermore, the portion near the tooth tip adopts a honeycomb structure or a hollow grid structure, the middle portion of the tooth root adopts a honeycomb structure or a hollow grid structure, and the end near the gum adopts a smooth surface.

[0016] A dental implant for multiple roots comprises a dental crown and any one of the dental implants for multiple roots described above, wherein the dental crown is provided with a groove for accommodating a base, and the dental crown is arranged on the root portion.

[0017] The beneficial effects of the present invention are as follows: the multi-root dental implant and dental implant can make the dental implant completely fit with the alveolar bone in the gums after installation by setting the gum fitting structure, so that after the dental implant is installed, it is no longer necessary to grind the alveolar bone to make it flush with the dental implant, reducing the pain of the patient, and retaining the original arc-shaped end face of the alveolar bone, which can greatly shorten the waiting time for the installation of the crown, thereby greatly shortening the dental implant installation time. And after the dental implant is installed, the middle height of the gums is still greater than the height of the tongue side and the labial side, so that food residues can be easily discharged, avoiding the problem that after the existing alveolar bone is ground, the alveolar bone end face height is flush, and the food residues are easily retained between the teeth and are difficult to discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a dental implant for multiple tooth roots according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of a single-root dental implant;

[0020] Figure 3 It is a schematic cross-sectional structure diagram of a multi-root dental implant and a base, a left connecting shaft, a right connecting shaft, and a crown in an embodiment;

[0021] Figure 4 is a schematic diagram of the exploded structure of a multi-root dental implant and an abutment, a left connecting shaft, and a right connecting shaft of an embodiment;

[0022] Figure 5 is a schematic structural diagram of a multi-root dental implant having a smooth surface at the gingival end thereof in an embodiment;

[0023] Among them: 1-root, 2-base, 3-convex tip, 4-arc-shaped concave part, 5-crown, 6-adhesive layer, 7-connecting axis;

[0024] 11- tooth tip, 12- root middle, 13- gingival end, 14- positioning groove, 15- connection groove;

[0025] 21-tooth root connection part, 22-tooth crown connection part, 23-through hole, 24-bit groove;

[0026] 71-locking portion, 72-inner concave screw groove. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example

[0028] A dental implant for multiple roots, such as Figure 1 , including a root portion 1, the root portion 1 includes a proximal gingival end portion 13, more than three root middle portions 12 and more than three proximal tooth tip portions 11, the proximal tooth tip portions 11 are connected to the proximal gingival end portions 13 through the root middle portions 12 respectively, and the end surface of the proximal gingival end portion 13 is provided with a gingival fitting structure, the gingival fitting structure includes two convex tips 3 and two arc-shaped recessed portions 4, the convex tips 3 and the arc-shaped recessed portions 4 are alternately arranged in sequence and are connected end to end.

[0029] This multi-root dental implant can completely fit the dental implant with the alveolar bone in the gums after installation by setting a gum fitting structure, so that after the dental implant is installed, it is no longer necessary to grind the alveolar bone to make it flush with the dental implant, which reduces the pain of the patient, and retains the original arc-shaped end face of the alveolar bone, which can greatly shorten the waiting time for the installation of the crown 5, thereby greatly shortening the dental implant installation time. And after the dental implant is installed, the middle height of the gums is still greater than the height of the tongue side and the labial side, so that food residues can be easily discharged, avoiding the problem that food residues are easily retained between teeth and difficult to discharge when the alveolar bone end face height is flush after the existing grinding of the alveolar bone.

[0030] In the embodiment, the two convex tips 3 are respectively fitted with the arcuate end faces of the tooth root in the gums, and the two arcuate recesses 4 are respectively fitted with the lingual side and the labial side of the gums. After the dental implant of the embodiment is installed in the alveolar socket after tooth extraction, it can completely fit with the surface shapes of the alveolar bone and the gums on both sides of the alveolar socket, and there is no need to grind and correct the alveolar bone to make the end face of the alveolar bone flush with the end face of the dental implant.

[0031] like Figure 3 and Figure 4 The embodiment also includes three bases 2, which respectively include a crown connection part 22 and a root connection part 21. The crown connection part 22 is arranged on the root connection part 21, and the root connection part 21 is connected with the gingival end 13 of the root part 1. The root connection part 21 adopts a boss structure, and the gingival end 13 is provided with a positioning groove 14. The positioning groove 14 adopts three grooves arranged in sequence to form a ring, and the boss structures are respectively arranged corresponding to the grooves.

[0032] By providing the boss structure and the positioning groove 14, the transverse surface of the base 2 can be fixed to ensure the stability of the transverse surface and avoid displacement of the transverse surface. And through the structural design of the positioning groove 14, the positioning groove 14 uses three grooves arranged in sequence to form an annular shape, which can further improve the stability of the overall structure. The groove is circular, elliptical or polygonal, and the boss structure is adapted to the groove respectively.

[0033] The multi-root dental implant of the embodiment also includes three connecting shafts 7. The root portion 1 is respectively provided with connecting grooves 15 for the connecting shaft 7 to penetrate. The connecting grooves 15 are respectively arranged below the grooves, and the connecting grooves 15 are respectively connected to the grooves. The connecting shaft 7 and the base 2 are arranged one by one. The middle part of the base 2 is respectively provided with through holes 23 for the connecting shaft 7 to pass through. The crown connecting end of the connecting shaft 7 is respectively provided with an inner concave screw groove 72, and the inner concave screw groove 72 adopts a straight groove, a cross groove, an elliptical groove or a polygonal groove such as a triangle or a hexagon. It is convenient to operate to install the connecting shaft 7 into the through hole 23 and then penetrate the connecting groove 15. The root connecting end of the connecting shaft 7 is provided with an external thread, and the connecting groove 15 is provided with an internal thread adapted to the external thread. Through the matching of the connecting groove 15 and the thread of the connecting shaft 7, the root portion 1 and the base 2 are longitudinally connected by the connecting shaft 7.

[0034] In the embodiment, the middle part of the connecting shaft 7 is provided with a locking portion 71, the diameter of the locking portion 71 is larger than the diameter of the connecting shaft 7, the locking portion 71 and the connecting shaft 7 together form an inverted convex axial cross section, and the through hole 23 of the base 2 is correspondingly provided with an inverted convex locking groove 24. By providing the locking portion 71 and the locking groove 24, the middle part of the connecting shaft 7 is positioned in the base 2.

[0035] In the embodiment, the crown connecting end of the connecting shaft 7 is connected to the crown 5 through the adhesive layer 6, and the middle of the crown 5 is provided with a through hole for accommodating the adhesive layer. The adhesive layer 6 is made of thermosetting resin. The root 1 is longitudinally connected to the base 2 and the crown 5 by the connecting shaft 7. The through hole in the middle of the crown 5 is bonded and flattened by the adhesive layer 6, so that when the connecting shaft 78 is bonded to the crown 5, it is ensured that the through hole is flush with the surface of the crown 5.

[0036] In the embodiment, Figure 5 , the end portion 13 near the gum adopts a smooth surface structure to avoid bacterial attachment. The tip portion 11 near the tooth adopts a honeycomb structure or a hollow grid structure, and the middle portion 12 of the tooth root adopts a honeycomb structure or a hollow grid structure. By adopting the honeycomb structure or the hollow grid structure, after the root portion 1 is inserted into the alveolar socket, the gums grow for a certain period of time and gradually penetrate into the socket of the honeycomb structure or the hollow grid structure, so that there is no gap between the alveolar bone and the honeycomb structure, thereby avoiding bacteria from invading the gap between the alveolar bone and the implant to cause inflammation and other problems. In the embodiment, in the embodiment, the root portion 1 can be made by 3D printing, so that the resulting tooth shape is accurate to be basically consistent with the original shape. The root portion 1 can be made of pure titanium. Compared with the existing stainless steel used in dental implants, pure titanium is safer for the human body and lighter in weight.

[0037] During the installation of the multi-root implant of the embodiment, after the root portion 1 is installed into the tooth socket, the root connection portions 21 of the three bases 2 are respectively installed into the grooves of the positioning grooves 14, the connecting shafts 7 are inserted into the through holes 23 of each base 2, and each connecting shaft 7 is threadedly connected to each connecting groove 15 through the concave screw groove 72 to complete the installation of the multi-root implant. The crown 5 is installed on the base 2, and the through opening in the middle of the crown 5 is bonded and leveled with the adhesive layer 6 to complete the installation of the multi-root implant.

[0038] A multi-root dental implant, such as Figure 2 , including a crown 5 and any one of the above-mentioned multi-root dental implants, the crown 5 is provided with a groove for accommodating the base 2, and the crown 5 is arranged on the root part 1.

Claims

1. A dental implant for multiple tooth roots, comprising a tooth root portion, the tooth root portion comprising a proximal gingival end portion, three or more root middle portions, and three or more proximal apical portions, wherein the proximal apical portions are connected to the proximal gingival end portions through the root middle portions, characterized in that: The end surface of the near-gingival end is provided with a gingival fitting structure, which includes two convex tips and two arc-shaped recessed parts, which are arranged alternately in sequence and end to end; the two convex tips are respectively fitted with the arc-shaped end surfaces of the roots in the gums, and the two arc-shaped recessed parts are respectively fitted with the lingual side and the labial side of the gums; it also includes three abutments, which respectively include a crown connection part and a root connection part, the crown connection part is arranged on the root connection part, the root connection part is butt-jointed with the near-gingival end of the root part, the root connection part adopts a boss structure, and the near-gingival end A positioning groove is provided, and the positioning groove adopts three grooves arranged in sequence to form a ring, and the boss structures are respectively arranged corresponding to the grooves; it also includes three connecting shafts, and the root part is respectively provided with connecting grooves for the connecting shaft to penetrate, and the connecting grooves are respectively arranged below the grooves, and the connecting grooves are respectively connected to the grooves, and the connecting shaft and the base are arranged one by one, and the middle part of the base is respectively provided with through holes for the connecting shaft to pass through; the crown connecting end of the connecting shaft is respectively provided with an inner concave screw groove, the root connecting end of the connecting shaft is provided with an external thread, and the connecting groove is provided with an internal thread adapted to the external thread.

2. The multiple-root dental implant according to claim 1, wherein: The groove is circular, elliptical or polygonal, and the boss structures are respectively adapted to the grooves.

3. The multiple-root dental implant according to claim 1, wherein: The middle of the connecting shaft is provided with a locking part, the diameter of the locking part is larger than the diameter of the connecting shaft, the locking part and the connecting shaft together form an inverted convex axial section, and the through hole of the base is correspondingly provided with an inverted convex locking groove.

4. The multiple-root dental implant according to claim 1, wherein: The tooth crown connecting ends of the connecting shaft are connected to the tooth crowns through adhesive layers respectively, and a through opening for accommodating the adhesive layer is arranged in the middle of the tooth crown.

5. The multiple-root dental implant according to any one of claims 1 to 4, characterized in that: The tip of the tooth near the tooth adopts a honeycomb structure, the middle part of the root adopts a honeycomb structure, and the end near the gum adopts a smooth surface.

6. The multiple-root dental implant according to any one of claims 1 to 4, characterized in that: The near-tooth tip part adopts a hollow mesh structure, the middle part of the root part adopts a hollow mesh structure, and the near-gingival end adopts a smooth surface.

7. A dental implant for multiple roots, characterized in that: The invention comprises a dental crown and the dental implant for multiple roots as claimed in any one of claims 1 to 6, wherein the dental crown is provided with a groove for accommodating an abutment, and the dental crown is arranged on the root part.

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