CN112826618B - Bent cheekbone-passing implant structure - Google Patents

Abstract

The invention provides a curved transzygomatic implant structure, the implant structure is composed of a head (1), a body (2), a root (3) and an angle abutment (4), the head (1) It is designed as a cylinder, and the upper end is provided with a regular hexagonal counterbore (11) to receive the angle abutment (4) and the restoration body; (22), the curved segment (22) after implantation can fit with the concave anterolateral wall (5) of the maxillary sinus or be partially embedded in the anterolateral wall (5) of the maxillary sinus; the root (3) is implanted in the zygomatic bone Provide strong retention force and ensure good stability of transzygomatic implants. The implant structure provided by the present invention is closer to the concave anterolateral wall (5) of the maxillary sinus, so that the body (2) is far away from the soft tissue outside the anterolateral wall (5) of the maxillary sinus, avoids squeezing force on the soft tissue, and reduces the body part The incidence of exposed mouth.

Description

Curved zygomatic implant structure

technical field

The invention relates to the technical field of oral and maxillofacial artificial dental implants, in particular to a curved zygomatic implant structure.

Background technique

Long-term maxillary missing teeth, resection of benign and malignant tumors, congenital diseases, trauma and other reasons lead to serious lack of maxillary bone mass. Bone transplantation is often required before dental implant treatment for such patients. Methods include: vascularized musculoskeletal flap repair , free block bone grafting, maxillary sinus floor lifting bone grafting, etc. However, the above-mentioned bone transplantation methods are complex treatments, with large surgical trauma and high technical requirements, and are prone to complications, resulting in treatment failure and the like. Therefore, dental implant treatment with severely insufficient maxillary bone volume has become one of the most difficult implant treatments at present.

In order to avoid complex bone graft surgery, reduce the difficulty of surgery, and increase patient acceptance, in the late 1980s, Professor Brånemark of the University of Gothenburg, Sweden, invented the zygomatic implant for implants with severely insufficient (maxillary) bone mass. Denture restoration. Transzygomatic implants are inserted from the maxillary alveolar ridge, through the maxillary sinus and then into the zygomatic bone for dual bone retention. As the implant bone bed, the zygomatic bone has two advantages: the zygomatic bone is located on both sides of the middle of the face, and the upper part of the maxilla, and the zygomatic bone is large, which can provide sufficient bone conditions for implant placement; Histological analysis showed that the zygomatic region was regular trabecular bone with dense bone, which was beneficial to the ideal initial stability of the implant. At present, the clinically used transzygomatic implants have two characteristics: they are all linear implants; and ultra-long implants (30-52.5mm).

The traditional zygomatic implant is divided into 3 parts: head, body and root. The head is located at the level of the gums and accepts the restoration abutment. The root is the part that penetrates into the zygomatic bone and provides retention for the zygomatic implant. The key part, the body is the part between the head and the root. With the change of the shape of the anterolateral wall of the maxillary sinus, the body can be located in the anterolateral wall of the maxillary sinus or outside the anterolateral wall of the maxillary sinus (surrounded by soft tissue). ). The morphology of the anterolateral wall of the maxillary sinus can be divided into four categories: flat, mildly concave, markedly concave and severely atrophic. When the anterolateral wall of the maxillary sinus is flat, the body of the zygomatic implant will be located in the maxillary sinus, that is, the maxillary sinus should be fenestrated and the mucosa should be peeled off during the operation, and the body will be placed under the sinus mucosa; when the anterolateral maxillary sinus is When the wall is slightly recessed, the body of the zygomatic implant will be located in the bone wall of the maxillary sinus or partially in the sinus, and the maxillary sinus fenestration is also required to strip the mucosa during surgery; when the anterior and lateral walls of the maxillary sinus are significantly recessed or the maxilla is vertical , When the horizontal atrophy is severe, the body part of the zygomatic implant will be located outside the bone wall of the maxillary sinus, that is, the body part will not fit with the obviously depressed anterolateral wall of the maxillary sinus, but will be wrapped by mucosal soft tissue, and the body part will give soft tissue Apply a certain amount of squeezing force. When the patient performs functions such as speech and chewing, the soft tissue outside the body will move with the functional activities. Since the body of the implant will not have any movement, there will be relative movement between the soft tissue and the body. The existence of the squeezing force on the soft tissue of the zygomatic implant often leads to the erosion and perforation of the mucosa and submucosal soft tissue outside the body, resulting in the exposure of the body in the oral cavity; especially when the patient's submucosal tissue is thin, it is more likely to occur. Externally exposed. The surface of the implant exposed in the oral cavity is the carrier of plaque accumulation and local soft tissue inflammatory response, which will increase the patient's follow-up rate and lead to a decrease in satisfaction. In order to reduce the exposure rate, some scholars have used the method of buccal fat pad flap transfer when implanting zygomatic implants to increase the amount of tissue in the exposed implant body, hoping to achieve the purpose of reducing the exposure of the body to the oral cavity, but due to the buccal fat pad. Due to the very limited amount of tissue and other reasons, this method has been clinically proven to be basically ineffective.

SUMMARY OF THE INVENTION

In view of the above problems existing in the prior art, the object of the present invention is to provide a curved transzygomatic implant structure, which is characterized in that the body is curved, so that it can be closer to the anterior and lateral walls of the concave maxillary sinus, or partially embedded in the maxilla. In the anterior and lateral wall of the sinus, the body is kept away from the soft tissue layer of the buccal cavity and the incidence of exposed oral cavity is reduced. This structure is mainly used for patients with obvious depression of the anterior and lateral walls of the maxillary sinus or severe vertical and horizontal absorption of the maxilla.

The object of the present invention is achieved through the following technical solutions:

A curved zygomatic implant structure is characterized in that: the implant structure is composed of a head, a body, a root and an angle abutment; wherein, the head is a cylindrical structure with a regular hexagon at its upper end. a countersunk hole, the regular hexagonal countersunk hole receives the angle abutment and the restoration body, and the regular hexagonal countersunk hole and the angle base are connected by an inner hexagon, and the head and the angle base are fixed by first-level screws; The body part is composed of a straight line segment and a radian segment, the straight line segment is divided into two segments, a first straight line segment and a second straight line segment, the radian segment is the main body, and one end of the radian segment passes through the first straight line. The line segment is connected with the head, and the other end is connected with the root through a second straight line segment, and the radian segment is a curved shape with variable curvature, which can fit with the anterior and lateral walls of the maxillary sinus with different concave degrees; The root is a truncated cone-shaped structure, the diameter close to the second straight segment is larger than the diameter away from the second straight segment, and the end of the root is a smooth arc structure, the outer surface of the root is uniformly provided with a threaded structure, and the head is , The body does not contain thread structure.

The smooth design of the head and body without thread structure is beneficial to the health of the gums and cheek soft tissues. The root thread design and rough surface increase the bonding area between the implant and the bone tissue, effectively dispersing the occlusal stress, and the rough surface is beneficial to the interface bone tissue. It can improve the healing speed and increase the osseointegration rate of the implant-bone interface. The main part of the body is designed with a curved arc rather than a straight line. The curved surface can be close to or partially embedded in the anterior and lateral walls of the maxillary sinus, so that it will not squeeze the soft tissue of the cheek and reduce the occurrence of mucosal perforation and dehiscence. Avoid exposing the body to the mouth, and at the same time, the curved arc can also play a certain role in retaining and limiting; the root is connected to the body, which is the part implanted into the zygomatic bone, providing retention for the zygomatic implant and ensuring the upper denture. Long-term stability of wearing zygomatic implants after repair.

For further optimization, the angle abutment includes a regular hexagonal connecting part, a gingival part and a retaining platform; the regular hexagonal connecting part is matched with the regular hexagonal countersunk hole, and is an inner hexagonal connection, and the regular hexagonal One end of the prosthesis of the shaped connecting part is the abutment penetrating part, the regular hexagonal connecting part and the central axis of the abutment gingival part are on the same plane and intersect; The diameter of one end of the regular hexagonal connecting part is smaller than the diameter of one end away from the regular hexagonal connecting part; the retention table is located at one end of the gingival part away from the regular hexagonal connecting part, and the central axis of the retention table is connected to the The central axis of the gingival part is collinear, the middle of the retaining table is provided with a second-level threaded hole, and a second-level screw is installed in it to fix the upper restoration, and the regular hexagonal connection part and the head are provided with a second-level screw hole. The first-level threaded hole is installed in the first-level screw, so that the angle abutment and the zygomatic implant structure are fixedly connected as a whole.

For further optimization, the central axis of the first-stage threaded hole is collinear with the central axis of the regular hexagonal connecting portion, and the central axis of the second-stage threaded hole is collinear with the central axis of the retaining table.

For further optimization, the retaining table is an integral structure with the gingival part and the regular hexagonal connecting part (that is, the angle abutment is an integral molded part).

For further optimization, the central axis of the head, the central axis of the two straight sections of the body, and the central axis of the root are on a straight line, and the central axis of the two straight sections of the body and the curved section of the body The central axes of , intersect and connect smoothly.

For further optimization, the height of the head is 4.0mm, the diameter is 4.3mm; the distance between the opposite sides of the regular hexagonal counterbore is 2.5mm, and the depth of the regular hexagonal counterbore is 2.5mm.

For further optimization, the height of the regular hexagonal connecting part is 2.5mm; the height of the gingival part (that is, the vertical height from the top surface of the regular hexagonal connecting part to the edge point of the top surface of the gingival part) is 2～3mm ; The height of the retention table (that is, the vertical height from the top surface of the gingival part to the top surface of the retention table) is 2-3 mm.

For further optimization, the central axis of the gingival part is collinear with the central axis of the retaining table, and the angles formed by them and the central axis of the regular hexagonal connecting part are: 0°, 15°, 25°, 35°, 45° five kinds Either way, this different angle design facilitates the desired orientation of the upper prosthesis.

For further optimization, the length of the first straight segment is 3.0-5.0 mm and the diameter is 4.1 mm; the length of the second straight segment is 0.5-1.5 mm and the diameter is 4.1 mm; the diameter of the radian segment is the same as that of the first straight segment. The diameter of the straight segment is the same, and the height of the arc segment (that is, the distance from the most protruding point of the arc segment away from the straight body) is any one of 1.0mm or 2.0mm or 3.0mm or 4.0mm or 5.0mm, depending on the anterolateral side of the maxillary sinus. The concave degree of the wall is adjusted by adjusting the height of the arc segment to ensure the degree of fit between the arc segment and the anterior and lateral walls of the maxillary sinus. The length of the arc segment is 12-22 mm.

For further optimization, the length of the root is 15-20mm, the maximum diameter (that is, the diameter near the end of the second straight segment) is 4.1 mm, and the minimum diameter (that is, the end of the root) is 3.6 mm, and the root gradually becomes smaller. The design can increase the initial stability of implant placement and facilitate the smooth osseointegration of the implant.

For further optimization, the pitch of the thread structure is 0.7-1.2 mm, the cross-section of the thread is triangular, and the tooth depth is 0.5 mm.

For further optimization, the surface of the root is treated by any one of acid etching sandblasting, anodizing or laser roughening; the surface of the head and the body is treated by mechanical polishing.

For further optimization, the head, the body and the root are integrally formed parts, the angle abutment is fastened into the first straight section of the implant head and the body by the first-level screws, and the upper part is repaired. The body is a personalized prosthesis suitable for the patient's intraoral situation, and the upper prosthesis is fastened to the retention table of the angle abutment by means of secondary screws.

The present invention has the following technical effects:

The curved body design of the present invention has the advantage of reducing the exposure of the oral cavity through the zygomatic implant; at the same time, since the curved body part of the present invention will fit with the anterior and lateral walls of the maxillary sinus or be partially embedded in the sinus wall, therefore, it is different from the traditional straight line. Compared with the zygomatic implants, the curved body fits against the anterior and lateral walls of the maxillary sinus or is embedded in the sinus wall, which increases the bonding area between the implant and the bone tissue and improves the stability of the zygomatic implants. The root of the implant provides additional retention force in addition to the retention force, which is beneficial to the long-term stability of the transzygomatic implant. The use of the regular hexagonal countersunk hole of the present invention to cooperate with the angle abutment facilitates the upper restoration body to obtain an ideal positioning direction, thereby facilitating the position adjustment and retention of the restoration body. After the invention is implanted, the head is located at the level of the gums, and the root is located in the zygomatic bone, which can provide a strong retention force and ensure that the zygomatic implant has good stability under stress.

Description of drawings

FIG. 1 is a schematic structural diagram of a zygomatic implant in an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an angle base in an embodiment of the present invention.

3 is a cross-sectional view of an angle abutment in an embodiment of the present invention.

Figure 4 is a schematic structural diagram of the relationship between the traditional linear transzygomatic implant and the anterolateral wall of the maxillary sinus with obvious depression.

FIG. 5 is a schematic structural diagram of the relationship between the zygomatic implant and the obviously depressed anterior and lateral walls of the maxillary sinus according to the present invention.

Among them, 1. Head; 11. Regular hexagonal counterbore; 2. Body; 21. First straight line segment; 22. Radian segment; 23. Second straight line segment; 3. Root; 4. Angle abutment; 41 , Regular hexagonal connection part; 411, first-level threaded hole; 42, gingival part; 43, retention table; 431, second-level threaded hole; 5, front and outer wall of maxillary sinus.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example:

As shown in Figures 1 to 5, a curved zygomatic implant structure is characterized in that: the implant structure consists of a head 1, a body 2, a root 3 and an angle abutment 4; wherein, the head 1 is a cylinder Body structure, its upper end is provided with a regular hexagonal counterbore 11, the regular hexagonal counterbore 11 receives the angle abutment 4 and the restoration body, and the regular hexagonal counterbore 11 and the outer surface of the angle base 4 are connected by an inner hexagon, and the head 1 and the angle base 11 are fixed by the first-level screws; the body 2 is composed of a straight line segment and an arc segment 22, the straight segment is divided into two segments, the first straight segment 21 and the second straight segment 23 respectively, and the arc segment 22 is the main body part , and one end of the arc section 22 is connected with the head 1 through the first straight section 21, and the other end is connected with the root 3 through the second straight section 23. The arc section 22 is a curved shape with variable curvature, which can be connected with the upper jaw of different concave degrees. The anterior and outer side walls 5 of the sinus are fitted together; the root 3 is a truncated truncated structure, the diameter near the second straight segment 23 is larger than the diameter away from the second straight segment 23, and the end of the root 3 is a smooth arc-shaped structure, and the outer surface of the root 3 The threaded structure is evenly arranged, and the head 1 and the body 2 do not contain a threaded structure. The central axis of the head 1 and the central axis of the two straight sections of the body 2 and the central axis of the root 3 are on a straight line, and the central axis of the head 1 and the central axis of the root 3 intersect and connect smoothly with the central axis of the body 2 .

The angle abutment 4 includes a regular hexagonal connecting portion 41, a gingival portion 42 and a retaining table 43, and the angle abutment 4 is an integral structure; The counterbore 11 is connected with an inner hexagon, the coronal side of the regular hexagonal connecting part 41 is the gingival part 42, and the central axis of the regular hexagonal connecting part 41 and the gingival part 42 is on the same plane and intersects; the gingival part 42 is a truncated truncated structure 2. The diameter of one end close to the regular hexagonal connecting portion 41 is smaller than the diameter of one end away from the regular hexagonal connecting portion 41; The secondary threaded hole 431 is installed with the secondary screw to fix the restoration body, and the regular hexagonal connecting part 41 and the head 1 are provided with the primary threaded hole 411, in which the primary screw is installed to connect the angle base. The table is fixedly connected to the implant structure. The central axis of the first-stage threaded hole 411 is collinear with the central axis of the regular hexagonal connecting portion 41 , the central axis of the second-stage threaded hole 431 is collinear with the central axis of the retention table 43 , and the central axis of the retaining table 43 is in line with the middle axis of the gingival part 42 . Axes are collinear.

The height of the head 1 is 4.0mm and the diameter is 4.3mm; the distance between the opposite sides of the regular hexagonal counterbore 11 is 2.5mm, the depth of the regular hexagonal counterbore 11 is 2.5mm; the height of the regular hexagonal connection part 41 is 2.5mm; The height of the part 42 (that is, the vertical height from the top surface of the regular hexagonal connecting part to the edge point of the top surface of the gingival part) is 2.0-3.0 mm; the height of the retention table 43 (that is, from the top surface of the gingival part 42 to the The vertical height of the top surface of the retaining table 43) is 2.0 to 3.0 mm. The length of the first straight section 21 is 3.0 to 5.0 mm and the diameter is 4.1 mm; the length of the second straight section 23 is 0.5 to 1.5 mm and the diameter is 4.1 mm; the diameter of the arc section 22 is the same as the diameter of the first straight section 21 and is 4.1 mm , the height of the arc segment 22 (that is, the distance from the most protruding point of the arc segment 22 away from the linear body) is any one of 1.0mm or 2.0mm or 3.0mm or 4.0mm or 5.0mm (as shown in Figure 1, that is, H is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm or 5.0mm), according to the concave degree of the anterior and lateral walls 5 of the maxillary sinus, the height of the arc section 22 is adjusted to ensure that the arc section 22 is connected to the anterior and lateral sides of the maxillary sinus. The degree of fit of the wall 5, the length of the arc section 22 is 12-22 mm. The length of the root 3 is 15-20 mm, the maximum diameter (that is, the diameter near the end of the second straight segment 23) is 4.1 mm, and the minimum diameter (end diameter) is 3.6 mm. The gradually smaller root design can increase the implant placement time. The initial stability is conducive to the smooth osseointegration of the implant. The pitch of the thread structure is 0.7-1.2mm, the thread section is triangular, and the tooth depth is 0.5mm. The central axis of the retention table 43 and the central axis of the gingival part 42 are completely coincident and are the same straight line. When the intersection angle is 0°, the first-level screw hole and the second-level screw hole are completely coincident. The diameter of the first-stage screw hole is 1.6-1.8mm, the depth of the screw-hole is 7.0-9.0mm (calculated from the surface of the head), and the diameter of the second-stage screw hole is 1.5mm and the depth is 4.0-5.0mm. The thread form and pitch of the first-class screw and the second-class screw adopt the international common design.

The surface of the root part 3 is treated by any one of acid etching sandblasting, anodizing or laser roughening; the surfaces of the head part 1 and the body part 2 are treated by mechanical polishing. The head part 1, body part 2 and root part 3 of the zygomatic implant are integrated into one piece.

The curved transzygomatic implant can be made of a variety of biocompatible metals or their alloy materials, such as: one or more of pure titanium, titanium zirconium, pure tantalum, titanium aluminum vanadium alloy, tantalum titanium alloy, etc. materials, and of course other materials with similar properties are also within the scope of protection.

In clinical operation, the first step is to import the preoperative oral cone beam CT results into the implant design software. According to the shape and bone volume of the maxilla and zygomatic bone, the appropriate size and curvature of the zygomatic implant are selected, including: total length , the height of the body radian segment. The maxillary incision line is designed according to the specific position and number of implantation, generally a large arc incision at the top of the alveolar ridge and an additional loose incision in the zygomatic alveolar ridge area, flap, and extensive peeling around the zygomatic bone. The anterolateral wall of the maxillary sinus is exposed externally, the zygomatic alveolar ridge is displayed posteriorly, and the zygomatic and maxillary bones are exposed. Use a small ball drill to fix the point on the alveolar ridge, and prepare the implant socket step by step according to the predetermined implantation site and direction to reach the predetermined depth. The diameter of the bone drill is φ2.0, φ2.8 or φ3.5mm, if necessary can be tapped.

The zygomatic implant of the present invention has a curved design, and when screwing into the implant, the radian section of the body will rotate with the long axis of the root as the center, rather than the traditional straight zygomatic implant that only rotates on its own center line. for the rotation of the shaft. When the anterolateral wall 5 of the maxillary sinus is significantly depressed or the maxilla is severely atrophied vertically and horizontally, in these cases, the initial segment of the implant head 1 and body 2 (ie the first straight segment 21 ), the curved segment 22 There will be no restriction of autologous bone, let alone the restriction of teeth. The curved transzygomatic implant can be screwed in smoothly, and even if there is a small amount of bone tissue obstruction, it can be removed by grinding with a bone drill.

The final implantation state of the curved transzygomatic implant is that the root 3 is implanted in the zygomatic bone and obtains good initial stability; the convex side of the arc segment 22 fits with the concave anterolateral wall 5 of the maxillary sinus; the head 1 At the level of the alveolar ridge, or partially through the gingival tissue and exposed to the oral cavity.

After the curved transzygomatic implant is in place, a covering screw is screwed on the head, soft tissue reduction is performed, the incision is closed with suture, and the operation is completed. When the initial stability of the transzygomatic implant is high, it can be considered to screw in the angled abutment 4, take an impression, and make an immediate denture.

Under normal circumstances, after 3 to 6 months after the operation, the patient will have a follow-up visit, and the dental X-ray and oral cone beam CT will be taken to check the healing of the implant, and the covering screw, healing abutment or immediate denture will be removed, and the abutment with a suitable angle should be tightened with a torque wrench. 4 (as shown in Figure 2), the transfer rod is in place, the silicone rubber impression is made, and the upper bracket and denture are handed over to the factory to make the upper bracket and denture, and finally complete the clinical wearing of the denture.

In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top" ", "inside", "front", "center", "both ends", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implying the number of technical features indicated, Thus, features defined as "first", "second", "third", "fourth" may expressly or implicitly include at least one of such features.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A curved zygomatic implant structure, characterized in that: the implant structure is composed of a head (1), a body (2), a root (3) and an angle abutment (4); The head (1) is a cylindrical structure, and a regular hexagonal counterbore (11) is provided at the upper end thereof. (11) The outer surface of the angle base (4) is connected with an inner hexagon, and the head (1) and the angle base (4) are fixed by first-level screws; the body (2) is composed of a straight line segment It is composed of a radian section (22), and the straight line section is divided into two sections, namely a first straight line section (21) and a second straight line section (23), the radian section (22) is the main part, and the radian section (22) One end is connected to the head (1) through a first straight segment (21), the other end is connected to the root (3) through a second straight segment (23), and the radian segment (22) is curved. The curved shape with variable degrees can fit with the anterior and lateral walls (5) of the maxillary sinus with different concave degrees; the root (3) is a truncated truncated structure, and the diameter near the second straight segment (23) is larger than that far away from the second straight segment (23). The diameter of the straight segment (23), and the end of the root (3) is a smooth arc structure, the outer surface of the root is evenly provided with a threaded structure, and the head (1) and the body (2) do not contain thread structure; The central axis of the head (1), the central axis of the two straight segments of the body (2), and the central axis of the root (3) are on a straight line, and the central axis of the head (1), the central axis of the The central axis of the root portion (3) intersects and connects smoothly with the central axis of the body portion (2); The head (1), the body (2), and the root (3) are integrally formed parts, and the angle abutment (4) is fastened to the implant head (1) and the body by first-level screws (2) within the first straight line segment (21). 2. A curved transzygomatic implant structure according to claim 1, characterized in that: the angle abutment (4) comprises a regular hexagonal connecting part (41), a transgingival part (42) and a retaining part Stage (43); the regular hexagonal connecting portion (41) is located in the regular hexagonal counterbore (11) and is hexagonally connected with the regular hexagonal counterbore (11), and the regular hexagonal connecting portion (41) ) The end away from the bottom surface of the regular hexagonal counterbore (11) is the gingival part (42), and the regular hexagonal connecting part (41) and the central axis of the gingival part (42) are in the same plane the gingival part (42) is a circular truncated structure, and the diameter of one end close to the regular hexagonal connecting part (41) is smaller than the diameter of one end away from the regular hexagonal connecting part (41); the retention table (43) ) is located at one end of the gingival part (42) away from the regular hexagonal connecting part (41), the central axis of the retaining table (43) is collinear with the central axis of the gingival part (42), and the A second-level threaded hole (431) is arranged in the middle of the retaining table (43), a second-level screw is installed therein, and a first-level threaded hole ( 411), in which the first stage screws are installed. The curved zygomatic implant structure according to claim 2, characterized in that: the central axis of the first-stage threaded hole (411) is collinear with the central axis of the regular hexagonal connecting portion (41). , the central axis of the second-stage threaded hole (431) is collinear with the central axis of the retaining table (43). 4. A curved transzygomatic implant structure according to claim 2, characterized in that: the retaining table (43), the transgingival part (42) and the regular hexagonal connecting part (41) are All-in-one structure. 5. A curved transzygomatic implant structure according to claim 2, characterized in that: the central axis of the gingival part (42) is collinear with the central axis of the retaining table (43), and they are in line with the regular hexagon. The angle formed by the central axis of the connecting portion (41) is any one of five types: 0°, 15°, 25°, 35°, and 45°. 6. A curved transzygomatic implant structure according to claim 1 or 2, characterized in that: the first straight segment (21) has a length of 3.0-5.0 mm and a diameter of 4.1 mm; The straight section (23) has a length of 0.5-1.5 mm and a diameter of 4.1 mm; the diameter of the radian section (22) is the same as the diameter of the first straight section (21), and the height of the radian section (22) is the most convex of the radian section The distance from the exit point to the linear body is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm or 5.0mm, and the length of the radian section (22) is 12.0-22.0mm.

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