CN112826618A - Bent cheekbone-passing implant structure - Google Patents

Abstract

The invention provides a bent cheekbone-penetrating implant structure, which consists of a head (1), a body (2), a root (3) and an angle base (4), wherein the head (1) is designed to be a cylinder, and the upper end of the head is provided with a regular hexagon counter bore (11) for bearing the angle base (4) and a prosthesis; the body part (2) consists of a first straight line section (21), a second straight line section (23) and a radian section (22), and the radian section (22) after being implanted can be attached to the front outer side wall (5) of the sunken maxillary sinus or partially embedded into the front outer side wall (5) of the maxillary sinus; the root (3) is implanted in the cheekbone, provides strong retention force and ensures that the cheekbone-passing implant has good stability. The implant structure provided by the invention is closer to the front outer side wall (5) of the sunken maxillary sinus, so that the body part (2) is far away from soft tissues outside the front outer side wall (5) of the maxillary sinus, the extrusion force on the soft tissues is avoided, and the incidence rate of the body part exposing out of the oral cavity is reduced.

Description

Bent cheekbone-passing implant structure

Technical Field

The invention relates to the technical field of artificial dental implants for oral, maxillofacial and facial regions, in particular to a bent cheekbone-penetrating implant structure.

Background

The maxillary bone quantity is seriously insufficient due to long-term maxillary tooth loss, benign and malignant tumor excision, congenital diseases, trauma and the like, and a bone grafting operation is usually required before dental implant treatment of patients of the type, and the method comprises the following steps: vascularized osseous flap repair, free block bone transplantation, maxillary sinus floor external lifting bone grafting and the like. However, the bone grafting method belongs to complex treatment, has large surgical trauma and high technical requirements, and is easy to cause complications and cause treatment failure and the like. Therefore, dental implant treatment with severely insufficient maxillary bone mass is one of the most difficult implant treatments at present.

To avoid complicated bone grafting, to reduce the difficulty of the surgery, and to increase patient acceptance, zygomatic implants were invented by professor Br å nemark at the university of goldberg, sweden, at the end of the last 80 th century for implant denture repair with severely insufficient bone mass (maxilla). The zygomatic implant is accessed from the maxillary alveolar ridge, passed through the maxillary sinus and re-accessed to the zygomatic bone for dual bone retention. As an implant bone bed of the implant, the zygomatic bone has two advantages: the cheekbones are positioned on the two sides of the middle part of the face and on the outer upper part of the maxilla, and the cheekbones have large bone mass, so that the sufficient bone mass condition can be provided for the implant implantation; histological analysis shows that the zygomatic zone is a regular bone trabecula, the bone is compact, and the implant can obtain ideal initial stability. Currently, the cheekbone implants used clinically have two features: all are linear type plants; ultra-long implant (30-52.5 mm).

The traditional cheekbone implant is divided into 3 parts: the head is positioned at the gum level and receives the repair base, the root is a part penetrating into cheekbones and is a key part for providing fixing force for the cheekbones implant, and the body is a part positioned between the head and the root and can be positioned in the front outer side wall of the maxillary sinus or positioned outside the front outer side wall of the maxillary sinus (surrounded by soft tissues) along with the change of the form of the front outer side wall of the maxillary sinus. The form of the anterior lateral wall of the maxillary sinus can be divided into 4 types: flat, slightly concave, clearly concave and severely collapsed. When the front outer side wall of the maxillary sinus is flat, the body part of the cheekbone implant is positioned in the maxillary sinus, namely, the maxillary sinus is windowed and the mucous membrane is peeled off during the operation, and the body part is positioned under the mucous membrane in the maxillary sinus; when the front outer side wall of the maxillary sinus is slightly sunken, the body part of the zygomatic implant is positioned in the bone wall of the maxillary sinus or partially positioned in the maxillary sinus, and the maxillary sinus is windowed to peel off the mucous membrane during the operation; when the front outer side wall of the maxillary sinus is obviously sunken or the maxillary bone is vertical and horizontal to severe atrophy, the body part of the cheekbone implant is positioned outside the maxillary sinus bone wall, namely, the body part can not be attached to the front outer side wall of the maxillary sinus which is obviously sunken and is wrapped by mucous membrane soft tissue, and the body part can apply extrusion force with a certain size to the soft tissue. When a patient performs the functions of speaking, chewing and the like, the soft tissue outside the body part moves along with the functional movement, and because the body part of the implant does not have any mobility, the relative motion can occur between the soft tissue and the body part, and in addition, the existence of the extrusion force of the cheekbone-penetrating implant body part on the soft tissue often causes erosion and perforation of mucous membranes outside the body part and soft tissues under the mucous membranes, so that the body part is exposed in the oral cavity; body exposure is more likely to occur particularly when the patient has thinner submucosal tissue. The surfaces of the implants exposed in the oral cavity are carriers for plaque accumulation and local soft tissue inflammatory reaction, so that the patient's rate of return visit is increased, and the satisfaction is reduced. In order to reduce the exposure rate, the scholars adopt a method of cheek pad flap transfer when implanting the cheekbone implant to increase the tissue quantity of the body of the exposed implant, and hopefully achieve the purpose of reducing the body exposed oral cavity, but the clinic has proved that the method is basically ineffective due to the reason that the tissue quantity of the cheek pad is very limited, and the like.

Disclosure of Invention

In view of the above problems in the prior art, an object of the present invention is to provide a curved cheekbone-penetrating implant structure, which is characterized in that the body is curved so as to be closer to the front and outer side walls of the maxillary sinus or partially embedded into the front and outer side walls of the maxillary sinus, so that the body is away from the buccal soft tissue layer of the oral cavity, thereby reducing the incidence of exposed oral cavity. The structure is mainly used for patients with obvious concave front lateral wall of maxillary sinus or serious vertical and horizontal absorption of maxillary bone.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a bent type cheekbone-passing implant structure which characterized in that: the implant structure consists of a head part, a body part, a root part and an angle base station; the head part is of a cylindrical structure, a regular hexagon counter bore is formed in the upper end of the head part, the regular hexagon counter bore is used for bearing the angle base station and the restoration, the regular hexagon counter bore is connected with the angle base station through an inner hexagon, and the head part and the angle base station are fixed through a first-stage screw; the body part consists of a straight line section and a radian section, the straight line section is divided into two sections, namely a first straight line section and a second straight line section, the radian section is a main body part, one end of the radian section is connected with the head part through the first straight line section, the other end of the radian section is connected with the root part through the second straight line section, and the radian section is in a bending shape with variable curvature and can be attached to the front outer side walls of maxillary sinuses with different concavities; the root is round platform column structure, the diameter that is close to the second straightway is greater than the diameter of keeping away from the second straightway, just the end of root is glossy arc structure, the root surface evenly sets up the helicitic texture, head, somatic part all do not contain helicitic texture.

The head and the body do not contain the smooth design of the threaded structure, which is beneficial to the health of gum and cheek soft tissue, the root thread design and the rough surface increase the combination area of the implant and the bone tissue, effectively disperse the occlusion stress, and the rough surface is beneficial to the healing speed of the interface bone tissue and increase the bone combination rate of the implant and the bone interface. The main body part of the body part is designed in a curved radian rather than a linear type, and the curved surface can be close to or partially embedded into the front outer side wall of the maxillary sinus, so that extrusion force on cheek soft tissues can be avoided, the occurrence of perforation and cracking of mucous membranes can be reduced, the body part is prevented from being exposed out of the oral cavity, and meanwhile, the curved radian can also play a certain role in retention and limiting; the root part is connected with the body part and is a part implanted into the cheekbone, so that the fixing force is provided for the cheekbone implant, and the long-term stability of the cheekbone implant after the upper denture is repaired is ensured.

According to further optimization, the angle abutment comprises a regular hexagon connecting part, a gum penetrating part and a retention table; the regular hexagon connecting part is matched with the regular hexagon counter bore and is connected with the regular hexagon counter bore in an inner hexagon manner, one end of a restoration body of the regular hexagon connecting part is a gingival penetrating part of the abutment, and the regular hexagon connecting part and the central axis of the gingival penetrating part of the abutment are on the same plane and are intersected; the gum penetrating part is of a round table structure, and the diameter of one end, close to the regular hexagonal connecting part, of the gum penetrating part is smaller than that of one end, far away from the regular hexagonal connecting part, of the gum penetrating part; the retention table is positioned at one end of the gum penetrating part far away from the regular hexagon connecting part, the central axis of the retention table is collinear with the axis of the gum penetrating part, a second-stage threaded hole is arranged in the middle of the retention table, a second-stage screw is installed in the retention table to fixedly install the upper prosthesis, a first-stage threaded hole is arranged on the regular hexagon connecting part and the head, and a first-stage screw is installed in the regular hexagon connecting part to fixedly connect the angle abutment and the cheekbone implant structure into a whole.

Further optimization is carried out, the central axis of the first-stage threaded hole is collinear with the central axis of the regular hexagon connecting part, and the central axis of the second-stage threaded hole is collinear with the central axis of the retention table.

Preferably, the retention table, the gum penetrating portion and the regular hexagon connecting portion are of an integrated structure (i.e. the angle abutment is an integrated piece).

And further optimizing, wherein the central axis of the head part, the central axes of the two straight line sections of the body part and the central axis of the root part are on the same straight line, and the central axes of the two straight line sections of the body part and the central axis of the bent section of the body part are intersected and smoothly connected.

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

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

Further preferably, the axis of the gum penetrating part is collinear with the central axis of the retention table, and the angles formed by the axis of the gum penetrating part and the central axis of the regular hexagonal connecting part are as follows: any one of five angles of 0 degrees, 15 degrees, 25 degrees, 35 degrees and 45 degrees, and the different angle design is convenient for the upper prosthesis to obtain an ideal positioning direction.

Further optimizing, wherein the length of the first straight line is 3.0-5.0 mm, and the diameter is 4.1 mm; the length of the second straight-line section is 0.5-1.5 mm, and the diameter of the second straight-line section is 4.1 mm; radian section diameter with first straight line section diameter is the same, and radian section height (the distance of the skew linear type somatic part of radian section most salient point promptly) is any group in 1.0mm or 2.0mm or 3.0mm or 4.0mm or 5.0mm, carries out the adjustment of radian section height, guarantees the laminating degree of radian section and the preceding lateral wall of maxillary sinus according to the sunken degree of lateral wall before the maxillary sinus, and the radian section length is 12 ~ 22 mm.

Further optimization is carried out, the root part is 15-20 mm in length, the maximum diameter (namely the diameter close to one end of the second straight line section) of the root part is 4.1mm, the minimum diameter (namely the tail end of the root part) of the root part is 3.6mm, and the design of the gradually reduced root part can increase the initial stability of implant implantation and is beneficial to smooth osseointegration of the implant.

Further optimization is carried out, the thread pitch of the thread structure is 0.7-1.2 mm, the cross section of each thread is triangular, and the depth of each tooth is 0.5 mm.

Further optimizing, the surface of the root part is treated by any one of acid etching sand blasting, anodic oxidation or laser roughening; the surfaces of the head and body are treated with a mechanically polished surface treatment.

In a further optimization, the head part, the body part and the root part are integrally formed, the angle abutment is fastened to a first straight line segment of the head part and the body part of the implant through a first-stage screw, the upper prosthesis is a personalized prosthesis suitable for the condition in the oral cavity of a patient, and the upper prosthesis is fastened to a retention table of the angle abutment through a second-stage screw.

The invention has the following technical effects:

the design of the bending body part has the advantages of reducing the exposed oral cavity of the cheekbone implant body part; meanwhile, since the curved body part of the present invention is attached to the anterior and lateral walls of the maxillary sinus or partially embedded into the sinus wall, compared with the conventional linear type zygomatic implant, the attachment of the curved body part to the anterior and lateral walls of the maxillary sinus or the embedding into the sinus wall increases the bonding area of the implant and the bone tissue, can improve the stability of the zygomatic implant, is a new retention force in addition to the retention force provided by the root of the zygomatic implant, and is advantageous for the long-term stability of the zygomatic implant. The regular hexagon counter bore is matched with the angle abutment, so that the upper prosthesis can obtain an ideal positioning direction, and the position of the prosthesis can be adjusted and fixed more conveniently. After the zygomatic implant is implanted, the head is positioned at the level of the gum, and the root is positioned in the zygomatic bone, so that strong retention force can be provided, and the zygomatic implant has good stability under the stress condition.

Drawings

Fig. 1 is a schematic structural view of a zygomatic implant in an embodiment of the invention.

Fig. 2 is a schematic structural diagram of an angle base according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of an angled base in an embodiment of the present invention.

Fig. 4 is a structural view illustrating the relationship between the conventional linear type zygomatic implant and the anterior and lateral walls of the maxillary sinus which is significantly depressed.

FIG. 5 is a schematic structural view showing the relationship between the zygomatic implant of the present invention and the anterior and lateral walls of the maxillary sinus with significant concavity.

Wherein, 1, head; 11. a regular hexagon counter bore; 2. a body portion; 21. a first straight line segment; 22. a radian section; 23. a second straight line segment; 3. a root portion; 4. an angle base station; 41. a regular hexagonal connecting portion; 411. a first-stage threaded hole; 42. penetrating the gum part; 43. a retention stage; 431. a second-stage threaded hole; 5. the anterior lateral wall of the maxillary sinus.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in figures 1-5, a curved cheekbone implant structure is characterized in that: the implant structure consists of a head part 1, a body part 2, a root part 3 and an angle base station 4; the head 1 is of a cylindrical structure, a regular hexagon counter bore 11 is formed in the upper end of the head 1, the regular hexagon counter bore 11 is used for bearing the angle base station 4 and the restoration, the outer surfaces of the regular hexagon counter bore 11 and the angle base station 4 are connected through an inner hexagon, and the head 1 and the angle base station 11 are fixed through a first-stage screw; the body part 2 consists of a straight line section and a radian section 22, the straight line section is two sections, namely a first straight line section 21 and a second straight line section 23, the radian section 22 is a main body part, one end of the radian section 22 is connected with the head part 1 through the first straight line section 21, the other end of the radian section 22 is connected with the root part 3 through the second straight line section 23, and the radian section 22 is in a bending form with variable curvature and can be attached to the front outer side wall 5 of the maxillary sinus with different concavities; root 3 is round platform column structure, is close to the diameter of second straightway 23 and is greater than the diameter of keeping away from second straightway 23, and the end of root 3 is glossy arc structure, and 3 surfaces of root evenly set up helicitic texture, and head 1, somatic part 2 do not all contain helicitic texture. The central axes of the two straight line segments of the head part 1 and the body part 2 are on the same straight line with the central axis of the root part 3, and the central axes of the head part 1 and the root part 3 are intersected and smoothly connected with the central axis of the body part 2.

The angle abutment 4 comprises a regular hexagon connecting part 41, a gum penetrating part 42 and a retention table 43, and the angle abutment 4 is of an integrated structure; the regular hexagon connecting part 41 is positioned in the regular hexagon counter bore 11 and is connected with the inner hexagon of the regular hexagon counter bore 11, the coronal part of the regular hexagon connecting part 41 is a gum penetrating part 42, and the central axes of the regular hexagon connecting part 41 and the gum penetrating part 42 are on the same plane and are intersected; the gum penetrating part 42 is in a round platform structure, and the diameter of one end, close to the regular hexagonal connecting part 41, of the gum penetrating part is smaller than that of one end, far away from the regular hexagonal connecting part 41, of the gum penetrating part; the retention platform 43 is positioned at one end of the gum penetrating part 42 far away from the regular hexagon connecting part 41, a second-stage threaded hole 431 is arranged in the middle of the retention platform 43, a second-stage screw is arranged in the second-stage threaded hole to fixedly install the prosthesis, the regular hexagon connecting part 41 and the head 1 are provided with a first-stage threaded hole 411, and a first-stage screw is arranged in the first-stage threaded hole to fixedly connect the angle abutment and the implant structure. The central axis of the first-stage threaded hole 411 is collinear with the central axis of the regular hexagon connecting part 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 retention table 43 is collinear with the central axis of the gum penetrating part 42.

The height of the head 1 is 4.0mm, and the diameter is 4.3 mm; the distance between the opposite sides of the regular hexagon counter bore 11 is 2.5mm, and the depth of the regular hexagon counter bore 11 is 2.5 mm; the height of the regular hexagonal connecting part 41 is 2.5 mm; the height of the gum penetrating part 42 (namely the vertical height from the top surface of the regular hexagonal connecting part to the edge point of the top surface of the gum penetrating part) is 2.0-3.0 mm; the height of the retention stage 43 (i.e., the vertical height from the top surface of the transgingival part 42 to the top surface of the retention stage 43) is 2.0 to 3.0 mm. The length of the first straight line section 21 is 3.0-5.0 mm, and the diameter is 4.1 mm; the length of the second straight line section 23 is 0.5-1.5 mm, and the diameter is 4.1 mm; the diameter of the arc section 22 is the same as that of the first straight line section 21 and is 4.1mm, the height of the arc section 22 (namely, the distance between the most protruded point of the arc section 22 and the linear body part) is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm and 5.0mm (as shown in figure 1, H is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm and 5.0 mm), the height of the arc section 22 is adjusted according to the sunken degree of the front outer side wall 5 of the maxillary sinus, the fit degree of the arc section 22 and the front outer side wall 5 of the maxillary sinus is ensured, and the length of the arc section 22 is 12-22 mm. The root 3 is 15-20 mm in length, the maximum diameter (namely the diameter close to one end of the second straight line section 23) of the root is 4.1mm, the minimum diameter (the diameter of the tail end) of the root is 3.6mm, and the design of the gradually reduced root can increase the initial stability of the implant implantation and is beneficial to smooth osseointegration of the implant. The thread pitch of the thread structure is 0.7-1.2 mm, the thread section is triangular, and the tooth depth is 0.5 mm. The central axis of the retention table 43 and the central axis of the gum penetrating portion 42 are completely coincided and are in the same straight line, the intersection angle between the retention table and the central axis of the regular hexagonal connecting portion 41 is any one of five grades of 0 degree, 15 degree, 25 degree, 35 degree and 45 degree, and when the intersection angle is 0 degree, the first-level screw holes and the second-level screw holes are completely coincided. The diameter of the first stage screw hole is 1.6-1.8 mm, the depth of the screw hole is 7.0-9.0 mm (from the head surface), the diameter of the second stage screw hole is 1.5mm, and the depth is 4.0-5.0 mm. The thread forms, the thread pitches and the like of the first-stage screw and the second-stage screw adopt international universal designs.

The surface of the root 3 is treated by any one of acid etching sand blasting, anodic oxidation or laser roughening; the surfaces of the head 1 and the body 2 are subjected to a mechanical polishing process. The head part 1, the body part 2 and the root part 3 of the cheekbone-passing implant are an integrated molding piece.

The material for manufacturing the bent cheekbone implant can be various biocompatible metals or alloy materials thereof, such as: one or more of pure titanium, titanium zirconium, pure tantalum, titanium-aluminum-vanadium alloy, tantalum-titanium alloy and the like, and other materials with similar properties are also within the protection range.

In the clinical operation, firstly, the preoperative oral cavity cone beam CT result is imported into implant design software, and according to the form and the bone quantity of the maxilla and the zygomatic bone, the zygomatic implant with proper size and radian is selected, and the method specifically comprises the following steps: total length, height of body arc segment. The maxillary incision line is designed according to the specific position and the number of the implant, and generally comprises a large arc incision at the top of an alveolar ridge and a loose incision additionally arranged in a zygomatic alveolar ridge area, a flap is turned over, the periphery of a zygomatic bone is widely stripped, a infraorbital hole is upwards displayed, the front outer side wall of a maxillary sinus is outwards exposed, the zygomatic alveolar ridge is backwards displayed, and the zygomatic bone and the maxilla are exposed. And (3) using a ball drill to fix a point on an alveolar ridge, preparing the implant socket step by step according to a preset implantation site and a preset direction and reaching a preset depth, wherein the diameter of the bone drill is phi 2.0, phi 2.8 or phi 3.5mm, and tapping can be carried out if necessary.

The zygomatic implant is of a bent design, and when the implant is screwed in, the radian section of the body can rotate by taking the long axis of the root as the center, so that the rotation only by taking the center line of the zygomatic implant as the axis of the traditional linear type zygomatic implant can be avoided. When the front outer side wall 5 of the maxillary sinus is obviously sunken or the maxillary bone is seriously atrophied vertically and horizontally, in these cases, the head part 1 and the body part 2 of the implant (namely, the first straight line part 21) and the radian part 22 are not limited by autogenous bones and teeth, the bent cheekbone-penetrating implant can be smoothly screwed in, and even if a small amount of bone tissues block, the maxillary sinus-penetrating implant can be removed by bone drill polishing.

The final implantation state of the curved cheekbone-passing implant is that the root 3 is implanted in the cheekbone and good initial stability is obtained; the convex side of the radian section 22 is attached to the concave front and outer maxillary sinus wall 5; the head 1 is positioned at the level of the alveolar ridge or partially protrudes out of the gingival tissue to be exposed in the oral cavity.

After the bent cheekbone-penetrating implant is in place, the head is screwed with a cover screw to perform soft tissue reduction, the incision is closed by suturing, and the operation is finished. When the initial stability of the zygomatic implant after implantation is high, it is considered to screw the angle abutment 4, remove the model, and manufacture an immediate denture.

Generally, a patient is subjected to a re-diagnosis after 3-6 months of operation, an X-ray dental film and an oral cavity cone beam CT are shot to check the healing condition of an implant, a covering screw and a healing abutment or an immediate denture are removed, a torque wrench is used for screwing a proper angle abutment 4 (as shown in figure 2), a transfer rod is put in place, an impression is made by silicon rubber, an upper support and the denture are manufactured in a transfer processing factory, and finally clinical wearing of the denture is completed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

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

Claims (7)

1. The utility model provides a bent type cheekbone-passing implant structure which characterized in that: the implant structure consists of a head part (1), a body part (2), a root part (3) and an angle base station assembly (4); the angle base station comprises a head (1), an angle base station (4), a prosthesis, a first-level screw, a second-level screw and a third-level screw, wherein the head (1) is of a cylindrical structure, a regular hexagonal counter bore (11) is formed in the upper end of the head, the regular hexagonal counter bore (11) is used for bearing the angle base station (4) and the prosthesis, the regular hexagonal counter bore (11) is connected with the outer surface of the angle base station (4) through an inner hexagon, and the head (1) and; the body part (2) consists of a straight line section and a radian section (22), 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 a main body part, one end of the radian section (22) is connected with the head part (1) through the first straight line section (21), the other end of the radian section (22) is connected with the root part (3) through the second straight line section (23), and the radian section (22) is in a bending form with variable curvature and can be attached to the front outer side wall (5) of the maxillary sinus with different concavities; root (3) be round platform column structure, be close to the diameter of second straightway (23) be greater than the diameter of keeping away from second straightway (23), just the end of root (3) is glossy arc structure, the root surface evenly sets up the helicitic texture, head (1), somatic part (2) do not all contain helicitic texture.

2. The curved zygomatic implant structure of claim 1, wherein: the angle abutment (4) comprises a regular hexagon connecting part (41), a gum penetrating part (42) and a retention table (43); the regular hexagon connecting part (41) is positioned in the regular hexagon counter bore (11) and is connected with the inner hexagon of the regular hexagon counter bore (11), one end, far away from the bottom surface of the regular hexagon counter bore (11), of the regular hexagon connecting part (41) is the gum penetrating part (42), and the central axes of the regular hexagon connecting part (41) and the gum penetrating part (42) are on the same plane and are intersected; the gum penetrating part (42) is of a round table structure, and the diameter of one end, close to the regular hexagonal connecting part (41), of the gum penetrating part is smaller than that of one end, far away from the regular hexagonal connecting part (41); maintenance platform (43) are located it keeps away from to wear gum portion (42) the one end of regular hexagon connecting portion (41), maintenance platform (43) axis with wear gum portion (42) axis collineation, set up second level screw hole (431) in the middle of maintenance platform (43), installation second level screw in it, regular hexagon connecting portion (41) with head (1) sets up first level screw hole (411), installs first level screw in it.

3. The curved zygomatic implant structure of claim 2, wherein: first order screw hole (411) axis with regular hexagon connecting portion (41) axis collineation, second order screw hole (431) axis with maintenance platform (43) axis collineation.

4. The curved zygomatic implant structure of claim 2, wherein: the retention table (43), the gum penetrating part (42) and the regular hexagon connecting part (41) are of an integrated structure.

5. The curved zygomatic implant structure of claim 2, wherein: the central axis of the gum penetrating part (42) is collinear with the central axis of the retention table (43), and the central axes of the gum penetrating part and the retention table form an angle with the central axis of the regular hexagon connecting part (41) which is as follows: any one of five of 0 °, 15 °, 25 °, 35 °, and 45 °.

6. The curved zygomatic implant structure of claim 1 or 2, wherein: the length of the first straight line section (21) can be 3.0-5.0 mm, and the diameter can be 4.1 mm; the length of the second straight line section (23) can be 0.5-1.5 mm, and the diameter can be 4.1 mm; the diameter of the radian section (22) is the same as that of the first straight line section (21), the height of the radian section (22) (namely the distance between the most protruded point of the radian section and the straight line body) is any one group of 1.0mm or 2.0mm or 3.0mm or 4.0mm or 5.0mm, and the length of the radian section (22) can be 12.0-22.0 mm.

7. The curved zygomatic implant structure of claim 1 or 2, wherein: head (1) axis the axis of two straightways of somatic part (2) root (3) axis is on a straight line, just head (1) axis root (3) axis with crossing and the smooth connection of somatic part (2) axis.

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