CN111419448A

CN111419448A - Wing plate penetrating implant and oral implant

Info

Publication number: CN111419448A
Application number: CN202010358260.1A
Authority: CN
Inventors: 邹多宏; 高振华; 杨驰; 张志愿
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-07-17

Abstract

The application relates to the technical field of dental implantation, in particular to a wing plate-penetrating implant and an oral implant. Wear pterygoid lamina planting body including the planting body head, the planting body neck that connect gradually, the planting body head is the conical body, the external diameter of planting body head is crescent from its near-end to its distal end, the planting body head includes pointed end and the installation department of being connected with pointed end the near-end of pointed end is most advanced, the installation department with the planting body neck is connected, the periphery of pointed end is equipped with self tapping formula screw thread section, the periphery of installation department is equipped with the double-thread screw thread section, be equipped with self tapping groove on the planting body head. The head of the implant is conical, and a plurality of thread sections and double-thread structures are arranged on the head of the implant, so that the head of the implant is self-tapping; the tip of the implant head also has some cutting capability. The neck of the implant is not only beneficial to osseointegration, but also convenient to clean after bone absorption, and peri-implantitis is prevented.

Description

Wing plate penetrating implant and oral implant

Technical Field

The application relates to the technical field of dental implantation, in particular to a wing plate-penetrating implant and an oral implant.

Background

Dental implant restoration is an effective treatment method for restoring the chewing function and the beauty of a patient with tooth loss, the occlusal force of the posterior dental area of the upper jaw is large, the cantilever beam at the far end of the dental implant restoration is an examination for the long-term stability of a dental implant and a restoration component, and a large number of clinical case researches show that the cantilever beam, particularly the overlong cantilever beam has higher biomechanical risk; the larger occlusal force of the posterior dental area and the stress generated by the cantilever beam can cause the complications of bone absorption of the neck of the most distal dental implant, the exposure of the thread at the upper end of the implant, the fracture of the prosthesis, the loosening and the fracture of the central screw, and the like. Bone grafting and maxillary sinus lifting are techniques which are commonly adopted when the bone quantity of a maxillary posterior dental area is insufficient, but aiming at old patients or patients who do not tolerate bone grafting, a brand-new dental implantation treatment scheme is required to be adopted for functional reconstruction of a deficient dental area. The V-II-V dental implantation is to add two oblique dental implants in the far middle of the two sides of the upper jaw on the basis of All-on-Four, so that the problem of far end fixing and repairing of an upper jaw edentulous patient can be effectively solved. The greatest advantages of V-II-V planting are: respectively implanting one inclined dental implant at 30 ℃ or 45 ℃ close to the back wall or the wing plate area of the maxillary sinus, and completely eliminating a cantilever at the far end of the implant; the immediate repair of the upper jaw whole dental arch can be completed by only 6 dental implants; avoids the bone augmentation operation in the maxillary sinus region, simplifies the dental implantation treatment procedure, relieves the postoperative reaction and the pain of the patient, and shortens the treatment time. However, the tooth implantation technology sensitivity of the farthest end inclined implantation wing plate in the V-II-V tooth implantation is high. The wing plate implantation technique is also called TPP implantation, namely the implant is implanted with three parts of T: Tubera (maxillary) maxillary node, P: Pterygoid plate and P: Palatine simultaneously. The length from the crest of the alveolar ridge to the wing plate is about 16-25mm, and the conventional implant cannot meet the requirement of wing plate penetrating implantation.

Disclosure of Invention

In view of the above disadvantages of the prior art, the present application is directed to a wearable plate implant and an oral implant, which solves the problems of the prior art.

For realizing above-mentioned purpose and other relevant purposes, this application provides a wear pterygoid lamina planting body on the one hand, wear pterygoid lamina planting body including the planting body head, the planting body neck that connect gradually, the planting body head is the conical body, the external diameter of planting body head increases gradually from its near-end to its distal end, the planting body head includes pointed end and the installation department of being connected with pointed end, the near-end of pointed end is most advanced, the installation department with the planting body neck is connected, the periphery of pointed end is equipped with self-tapping formula screw thread section, the periphery of installation department is equipped with the double-line screw thread section, be equipped with the self-tapping groove on the planting body head.

In some embodiments of the present application, the thread depth of the self-tapping thread section decreases from the proximal end of the tip portion to the distal end of the tip portion.

In some embodiments of the present application, the thread depth of the double-line thread segment decreases from the proximal end of the mounting portion to the distal end of the mounting portion.

In some embodiments of the present application, the thread depth of the self-tapping thread section is greater than the thread depth of the double thread section.

In some embodiments of the present application, the thread thickness of the self-tapping thread section is less than the thread thickness of the double thread section.

In some embodiments of the present application, the thread pitch of the self-tapping thread segment is greater than the thread pitch of the twin-thread segment.

In some embodiments of the present application, the surface of the implant neck is a smooth surface.

In some embodiments of the present application, the surface of the neck of the implant is a rough surface having a roughness of 0.1-1 um.

In some embodiments of the present application, the self-tapping groove extends in an axial direction of the implant head.

In some embodiments of the present application, the implant head is a solid structure.

In some embodiments of the present application, the angle between the working surface of the thread in the self-tapping thread section and the radial direction of the tip portion is 10 ° to 30 °.

In some embodiments of the present application, the angle between the running surface of the thread in the double-thread segment and the radial direction of the mounting portion is between 5 ° and 20 °.

In some embodiments of the present application, the ratio of the thread pitch of the self-tapping thread section to the thread pitch of the twin-thread section is 7: 5-12: 7.

in some embodiments of the present application, the ratio of the length of the self-tapping thread section to the length of the double thread section is 1: 2-1: 3.

this application on the other hand provides an oral cavity implant, the oral cavity implant include this application wear the pterygoid lamina implant, still include with wear the base station of pterygoid lamina implant connection.

In the wing plate-penetrating implant, the head of the implant is conical, and a plurality of thread sections and a double-thread structure are arranged on the head of the implant, so that the wing plate-penetrating implant has self-tapping property; the tip of the head of the implant also has certain cutting capacity; acid decoration roughening treatment is carried out on the surface of the implant; the neck of the implant is arranged at the part close to the alveolar ridge and has two forms: 1) the thread-free and low-coarsening surface treatment is beneficial to osseointegration and cleaning after bone absorption, and peri-implantitis is prevented. 2) The implant has no screw thread, and the surface is a machined smooth surface, so that peri-implantitis can be effectively avoided if alveolar ridge top part alveolar bone absorption occurs after the dental implant is repaired.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the inventive transwinged plate implant.

Fig. 2 is a partial enlarged view of the fenestrated plate implant of the present application.

Element numbers in the figures of the present application:

1 implant head

11 tip part

111 tip

12 mounting part

2 implant neck

3 self tapping groove

41 self-tapping screw thread section

42 double thread segment

Detailed Description

In the description of the present application, it should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present application are only used for matching the disclosure of the present application, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present application can be implemented, so that the present application has no technical essence, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope that the technical contents disclosed in the present application can be covered without affecting the efficacy and the achievable purpose of the present application. While the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the present application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, the embodiment of the application provides a wear pterygoid lamina planting body on the one hand, wear pterygoid lamina planting body is including connecting gradually planting body head 1, planting body neck 2, planting body head 1 is the conical body, planting body head 1's external diameter is crescent from its near-end to its distal end, planting body head 1 includes pointed end 11 and the installation department 12 of being connected with pointed end 11 the near-end of pointed end 11 is most advanced 111, installation department 12 with planting body neck 2 connects, the periphery of pointed end 11 is equipped with self-tapping formula screw thread section 41, the periphery of installation department 12 is equipped with double-thread screw thread section 42, be equipped with self-tapping groove 3 on the planting body head 1. Wherein, the most advanced 111 of the proximal end of the implant head 1 of this application is for having the cutting ability, and is equipped with a plurality of screw thread sections on the implant head 1, is that the implant has certain self-tapping nature.

In the through-wing plate implant provided by the embodiment of the application, the material of the through-wing plate implant is five-grade titanium. The head 1 of the implant is of a solid structure. The proximal end of the implant head 1 is the free end, not connected to other parts, and is the end away from the neck 2 of the implant, and the distal end of the implant is the end close to the neck 2 of the implant.

In the pterygoid lamina planting body that wears that the embodiment of this application provided, planting body head 1 includes pointed end 11 and the installation department 12 of being connected with pointed end 11, installation department 12 with planting body neck 2 is connected, the periphery of pointed end 11 is equipped with self tapping formula screw thread section 41, the periphery of installation department 12 is equipped with double-line screw thread section 42.

Further, as shown in fig. 2, the thread depth h of the self-tapping thread section 41 is gradually reduced from the proximal end of the tip portion 11 to the distal end of the tip portion 11. The proximal end of the tip portion 11 is an end far from the mounting portion 12, and the distal end of the tip portion 11 is an end near the mounting portion 12. The tip portion 11 gradually increases in diameter from its proximal end to its distal end in its axial direction. The tip portion of the tip 111 is located at the free end, the end remote from the mounting portion 12. Typically, no threads are provided at the tip 111.

Further, the thread depth of the double-threaded segment 42 decreases from the proximal end of the mounting portion 12 to the distal end of the mounting portion 12. Wherein, the proximal end of the mounting part 12 refers to the end near the tip part 11, and the distal end of the mounting part 12 refers to the end near the implant neck part 2. The mounting portion 12 gradually increases in diameter along its axial direction from its proximal end to its distal end.

Further, the thread depth h of the self-tapping thread section 41 is greater than the thread depth h of the double thread section 42. As shown in fig. 2, the thread depth h refers to the thread height of the thread in the self-tapping thread section 41 or the thread height of the thread in the double thread section 42. The design ensures that the implant has a certain extrusion effect on cancellous bone in the implantation process, obtains ideal initial stability and is beneficial to vascularization bone formation. The thread depth of the self-tapping thread section 41 is 0.5-2 mm, and the thread depth of the double-thread section 42 is 0.2-1.5 mm.

Further, the thread thickness d of the self-tapping thread section 41 is smaller than the thread thickness d of the double thread section 42. As shown in fig. 2, the thread thickness d refers to the height of each thread outer side surface of each thread in the self-tapping thread section 41 or the double-threading thread section 42 in the axial direction of the implant head 11. The design enables the thread to have self-tapping and cutting functions, facilitates the implantation of the implant and reduces the heat generated by friction. The thread thickness of the self-tapping thread section 41 is 0.1-0.5 mm, and the thread thickness of the double-thread section 42 is 0.5-1.5 mm.

Furthermore, the thread pitch L of the self-tapping thread section 41 is larger than the thread pitch L of the double-thread section 42, the thread pitch L is the distance between the adjacent 2 threads along the axial direction of the head 11 of the implant, the thread pitch ratio of the self-tapping thread section 41 to the double-thread section 42 is 7: 5-12: 7, due to the design, the implant has a certain extrusion effect on cancellous bone in the implantation process, ideal initial stability is obtained, vascularization is facilitated, the thread pitch of the self-tapping thread section 41 is 0.7-1.2 mm, and the thread pitch of the double-thread section 42 is 0.5-0.7 mm.

Furthermore, the length ratio of the self-tapping thread section 41 to the double-thread section 42 is 1: 2-1: 3. The length refers to the length of the thread segment in the axial direction of the mounting portion 12. The design facilitates the implantation of the implant and the extrusion of the alveolar bone, is favorable for obtaining the initial stability of the dental implant, reduces heat production, and greatly improves the success rate of implant restoration. The length of the self-tapping thread section 41 is 3-10 mm; the length of the double-thread section 42 is 6-15 mm.

Further, an included angle between a working surface of the thread in the self-tapping thread section 41 and the radial direction of the tip portion 11 is 10-30 °. Such a design facilitates implant implantation and reduces frictional heat generation.

Furthermore, the included angle β between the radial direction of the mounting portion 12 and the working face of the screw thread in the double-thread section 42 is 5-20 degrees.

In the through-wing plate implant provided by the embodiment of the present application, the self-tapping groove 3 extends in the axial direction of the implant head 1. The self-tapping channel 3 extends in the axial direction from the proximal end of the implant head 1 to the distal end thereof. Further, the tip portion 11 is provided with a self-tapping groove 3. The tapping groove 3 extends in the axial direction from the proximal end of the tip portion 11 to the distal end thereof. Such design makes at the implant implantation in-process, collects cancellous bone, reduces pressure, avoids the heat production, does benefit to the formation of chemical tube bone, has certain anti-adversity rotation effect simultaneously.

In the wing board planting body of wearing that the embodiment of this application provided, planting body head 1 is the cone, and planting body neck 2 is the cylinder, and planting body head 1 and planting body neck 2 external diameter at its junction equals. Specifically, the outer diameter of the head 1 of the implant is 1-4.5 mm. The outer diameter of the implant neck 2 is 4.5-5 mm. The outer diameter of the tip part 11 is 1-4 mm or 1-3 mm. The outer diameter of the mounting part 12 is 3-4.5 mm or 4-4.5 mm.

Further, the length of the implant can be set according to actual needs, and can be 16mm to 25mm, for example. More specifically, the diameter of the hole may be 16mm, 18mm, 20mm, 22mm, 25mm, or the like. The length of the head part 1 of the implant with different lengths is changed, and the length of the neck part 2 of the implant is not changed. Such a design is intended to select a dental implant of a suitable length according to different bone heights of clinical patients.

Further, the length range of the head part 1 of the implant is 13-20 mm.

Further, the length of the implant neck 2 is 4-6 mm.

In one embodiment, the implant neck 2 is a smooth surface machined without threads. Therefore, after the dental implant is repaired, if the alveolar bone at the top of the alveolar ridge is absorbed, the peri-implantitis can be effectively avoided.

In an embodiment, the implant neck 2 comprises a rough surface, and the surface of the implant neck 2 is not threaded. The roughness of the rough surface is 0.1-1 um, 0.1-0.6 um or 0.6-1 um. Therefore, the utility model is not only beneficial to osseointegration, but also convenient to clean after bone absorption, and prevents peri-implantitis from occurring.

This application another aspect provides an oral implant, includes the wing board implant is worn with that this application first aspect provides, can also include the base station of being connected with the wing board implant of wearing. The abutment is generally a portion of the oral implant exposed to the outside of the mucosa, and provides support, retention and stabilization to the artificial denture of its upper structure. The abutment and the fenestrated plate implant may be connected by an implant neck 2. Wherein, the base station can be a composite base station in the prior art.

The wing plate-penetrating implant leaves the factory and is independently packaged by 3 layers, and the innermost layer is packaged by a sterile titanium tube; the second layer of package is a sterile plastic package, and the outer package is a plastic package paper box. Clinically, according to the specific conditions of a patient, an implant with a proper length is selected, and after the implantation cavity is prepared, the implant is implanted. The specific clinical application is as follows:

1. according to the wing plate planting process, anaesthetizing, turning over the wings, according to preoperative design and anatomical analysis of the wing plates, completing fixed point, positioning and three-dimensional direction determination, completing hole preparation by using a wing plate planting reamer, flushing bone chips in a pore canal and the like.

2. Implantation of a wing implant: (1) accurately measuring the depth of the planting pore channel by using a wing plate planting depth measuring ruler, and selecting a wing plate implant with a proper length; (2) confirming the length of the implant, opening the outer package of the implant, taking out and carefully opening the aseptic plastic package, and carefully pouring the implant with the aseptic inner-layer package on an aseptic operating table to avoid the contact with the aseptic inner package and the slippage and pollution of the inner-layer package; (3) fully exposing an operation area in the mouth, stabilizing an opening position of a patient, holding an implant by a wing plate planting general implanter by an operator, taking out the implant from a sterile titanium tube package, carefully implanting the wing plate implant from the head 1 of the implant from an implantation site, slowly and rotationally implanting the head of the implant through a maxillary nodule according to a preoperative designed three-dimensional angle and an anatomical mark point; when the implant is initially implanted, because the bone in the maxillary nodule area is softer, the implant torsion is lower, when the implant is implanted into the hard bone of the pile process and the wing plate, the torsion is increased rapidly, and finally, the ideal initial stability can be obtained when the implant is implanted; adjusting the inner hexagonal plane to be consistent with the buccal surface; the sealing screw is installed for embedding, planting and healing or the composite abutment healing cap is installed for exposing and healing, and under the condition of better initial stability, the composite abutment healing cap can be matched with other implants for immediate load repair; (4) note that: when the implant is implanted, the implant needs to be stabilized, the implant is implanted according to a design angle and an anatomical mark point, and the left-right and up-down swing is avoided, so that the collapse of bone in an upper jaw nodule area is prevented from failing to be implanted or the bone is implanted into a maxillary sinus;

3. and finishing the working processes of implanting other implants, sewing and the like according to the wing plate planting process.

To sum up, the wing plate-penetrating implant and the oral implant provided by the embodiment of the application have the following advantages:

in the wing plate-penetrating implant, the head part 1 of the implant is conical, a plurality of thread sections and a double-thread structure are arranged on the head part 1 of the implant, and the wing plate-penetrating implant has self-tapping property; the tip 111 of the implant head 1 also has a certain cutting capacity; acid decoration roughening treatment is carried out on the surface of the implant; the implant neck 2 is arranged at the part close to the alveolar ridge and has two forms: 1) the thread-free and low-coarsening surface treatment is beneficial to osseointegration and cleaning after bone absorption, and peri-implantitis is prevented. 2) The implant has no screw thread, and the surface is a machined smooth surface, so that peri-implantitis can be effectively avoided if alveolar ridge top part alveolar bone absorption occurs after the dental implant is repaired.

In conclusion, the present application effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. The utility model provides a wear pterygoid lamina planting body, its characterized in that, wear pterygoid lamina planting body is including planting body head (1), planting body neck (2) that connect gradually, planting body head (1) is the cone, the external diameter of planting body head (1) is crescent from its near-end to its distal end, planting body head (1) includes pointed end (11) and installation department (12) of being connected with pointed end (11), the near-end of pointed end (11) is most advanced (111), installation department (12) with planting body neck (2) are connected, the periphery of pointed end (11) is equipped with self tapping formula screw thread section (41), the periphery of installation department (12) is equipped with double-thread section (42), be equipped with self tapping groove (3) on planting body head (1).

2. The fenestrated implant according to claim 1, wherein the thread depth of the self-tapping thread segment (41) gradually decreases from the proximal end of the tip portion (11) to the distal end of the tip portion (11).

3. A fenestrated implant according to claim 1 wherein the thread depth of the double-threaded segment (42) gradually decreases from the proximal end of the mounting portion (12) to the distal end of the mounting portion (12).

4. The fenestrated plate implant of claim 1 wherein the thread depth of the self-tapping thread segment (41) is greater than the thread depth of the double thread segment (42).

5. The fenestrated plate implant of claim 1, wherein the thread thickness of the self-tapping thread segment (41) is less than the thread thickness of the double thread segment (42).

6. The fenestrated plate implant of claim 1, wherein the pitch of the self-tapping thread segment (41) is greater than the pitch of the double thread segment (42).

7. A fenestrated plate implant according to claim 1 wherein the surface of the neck (2) of the implant is a smooth surface.

8. The fenestrated plate implant of claim 1 wherein the surface of the neck (2) of the implant is a rough surface having a roughness of 0.1 to 1 um.

9. The fenestrated panel implant of claim 1 further comprising one or more of the following technical features:

A1) the self-tapping groove (3) extends along the axial direction of the implant head (1);

A2) the head (1) of the implant is of a solid structure;

A3) the included angle between the working surface of the thread in the self-tapping thread section (41) and the radial direction of the tip part (11) is 10-30 degrees;

A4) the included angle between the working surface of the thread in the double-thread section (42) and the radial direction of the mounting part (12) is 5-20 degrees;

A5) the thread pitch ratio of the self-tapping thread section (41) to the double thread section (42) is 7: 5-12: 7;

A6) the length ratio of the self-tapping thread section (41) to the double thread section (42) is 1: 2-1: 3.

10. an oral implant comprising the fenestrated plate implant of any one of claims 1-9, further comprising an abutment coupled to the fenestrated plate implant.