CN217938436U

CN217938436U - Special oral implant for posterior teeth

Info

Publication number: CN217938436U
Application number: CN202221982673.8U
Authority: CN
Inventors: 邹多宏
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-02
Anticipated expiration: 2032-07-29

Abstract

The application relates to the technical field of dental implantation, in particular to a special oral implant for posterior teeth. The special oral implant for the posterior teeth comprises a head part and a platform part which are adjacent, wherein the diameter of the platform part is gradually reduced from one end close to the head part to one end far away from the head part; an included angle alpha between a bus of the platform part and the bottom surface of the head part is an acute angle; one or more chip grooves are formed in the head; the length-diameter ratio of the head portion is 6-9:7-9. The application ensures the effective surface area of the implant, can effectively complete osseointegration, improves the success rate of the implantation, simplifies the operation, reduces the operation wound, saves the operation cost and has great social and economic benefits.

Description

Special oral implant for posterior teeth

Technical Field

The application relates to the technical field of dental implantation, in particular to a special oral implant for posterior teeth.

Background

The dental implantation restoration is the preferred restoration method for patients with dental loss, the number of dental implantation is huge every year in China, in 2020, official statistics is more than 400 ten thousand, and the market value is nearly 45 hundred million. Because the posterior area is in close proximity to the maxillary sinus or lower alveolar nerve canal, how to accomplish immediate implantation in the case of insufficient bone mass has been a challenge for the implanting physician. At present, special oral implants for immediate implantation in posterior tooth areas are lacking in the market. Therefore, the research and development of the special oral implant for immediate planting in the posterior dental area has important clinical significance and social value.

Clinically, teeth in the posterior dental area cannot be reserved due to various reasons and need to be pulled out. In which case an implant is required if immediate planting is performed. Based on this, this application designs a special oral cavity planting body of back tooth.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages of the prior art, an object of the present application is to provide a dental implant for posterior teeth, which can fill up the tooth extraction socket while ensuring the initial stability, thereby avoiding bone grafting, and can be instantly loaded, thereby simplifying the operation, saving the cost of the patient, maintaining the long-term stability of the implant, and reducing the implantation complications, so as to solve the problems in the prior art.

To achieve the above and other related objects, the present application provides a posterior dental implant including an adjoining head and a platform portion, the platform portion having a diameter gradually decreasing from an end near the head to an end far from the head; an included angle alpha between a bus of the platform part and the bottom surface of the head part is an acute angle; one or more chip grooves are formed in the head; the aspect ratio of the head is 6-9:7-9.

In some embodiments of the present invention, the platform portion is a circular truncated cone; the included angle alpha between the bus of the platform part and the bottom surface of the head part is 20-80 degrees.

In some embodiments of the invention, the platform portion comprises a horizontal thread segment.

In some embodiments of the present invention, the outer surface of the platform portion is a smooth arc surface.

The utility model discloses an in some embodiments, the one end that the head was kept away from to platform portion still is equipped with the base station mounting groove, the periphery of base station mounting groove is equipped with the platform and shifts the district.

In some embodiments of the present invention, the platform transfer area is an annular structure, and the annular width is 0.2mm to 0.5mm.

In some embodiments of the invention, the head comprises a guide portion and a mounting portion that are connected; the mounting part is connected with the platform part; the guide part is a smooth surface; the mounting portion includes a diagonal thread segment.

In some embodiments of the invention, the mounting portion is a cone; the diameter of installation department is from the one end of keeping away from platform portion to the one end crescent that is close to platform portion.

In some embodiments of the present invention, the pitch between adjacent threads of the helical thread segments is equal.

In some embodiments of the present invention, the thread depth of the oblique thread section gradually increases from the end away from the platform portion to the end close to the platform portion.

In some embodiments of the invention, the thread thickness between adjacent threads of the helical thread segments is equal.

In some embodiments of the present invention, the included angle between the working surface of each thread in the oblique thread segment and the radial direction of the head is β, β is greater than or equal to 5 ° and less than or equal to 30 °.

In some embodiments of the present invention, the chip groove extends from the mounting portion to the guide portion.

In some embodiments of the present invention, the depth of the flutes is 1 to 1.5mm.

In some embodiments of the invention, the surface of the head and/or platform is a rough surface.

In some embodiments of the present invention, the platform portion has a length to diameter ratio of 1-4:5-8.8.

In some embodiments of the present invention, the diameter of the end of the platform part away from the head part is 5mm to 8.4mm.

In some embodiments of the invention, the platform portion has a diameter of 5.5mm to 8.8mm near one end of the head portion.

In some embodiments of the present invention, the one end of the platform portion away from the head portion is provided with a base mounting groove.

In some embodiments of the present invention, the material of the special oral implant for posterior teeth is titanium.

Compared with the prior art, the beneficial effect of this application is:

1. the implant in the application is an ultra-wide implant, namely the diameter of the implant is larger than that of the general implant, so that the initial stability of the implant can be ensured, and the bone grafting operation is avoided. More importantly, the length of the implant is reduced, but the diameter is increased, so that the effective surface area of the implant is ensured, the osseointegration can be effectively completed, the success rate of the implantation is improved, the operation is simple and convenient, the operation wound is reduced, the operation cost is saved, and great social and economic benefits are achieved.

2. In the application, the diameter of the platform part is designed to be gradually reduced from one end close to the head part to one end far away from the head part; the platform part realizes the adduction of a certain degree, so that when the bone grafting is carried out, the bone beside the platform part is not extruded, and the formation of a new bone is facilitated.

3. Still be equipped with the platform on the platform portion and shift the district, after installing the base station in the platform portion, the platform shifts and can form certain space between district and the base station and for bone combination portion, does benefit to the plant body bone combination, and the bone can slowly grow into bone combination portion after the planting body is implanted, does benefit to plant body platform portion bone combination.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of a dental implant for posterior teeth according to the present application.

Fig. 2 is a front view schematically illustrating a first embodiment of the dental implant for posterior teeth of the present application.

Fig. 3 is a left side view schematic structure diagram of the first embodiment of the dental implant for posterior teeth of the present application.

Fig. 4 is a schematic top view of the first embodiment of the dental implant for posterior teeth of the present application.

Fig. 5 is a schematic bottom view of the first embodiment of the dental implant for posterior teeth of the present application.

Fig. 6 is a schematic perspective view illustrating a second embodiment of the dental implant for posterior teeth of the present application.

Fig. 7 is a front view schematically illustrating a second embodiment of the dental implant for posterior teeth of the present application.

Fig. 8 is a left side view schematically illustrating the structure of the second embodiment of the dental implant for posterior teeth of the present application.

Fig. 9 is a schematic top view of a second embodiment of the dental implant for posterior teeth of the present application.

Fig. 10 is a schematic bottom view of a second embodiment of the dental implant for posterior teeth of the present application.

Element numbers in the figures of the present application:

1. head part

11. Guide part

12. Mounting part

121. Oblique thread segment

2. Platform part

21. Horizontal screw thread section

22. Base station mounting groove

23. Platform transfer area

3. Chip groove

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 to describe the present application and to simplify 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 are therefore not to be considered limiting of the present application. Furthermore, the terms "first," "second," and the like 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 should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable 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 to 10, in one aspect, the present embodiment provides a posterior dental implant, which includes an adjoining head portion 1 and a platform portion 2, wherein the diameter of the platform portion 2 gradually decreases from one end close to the head portion 1 to one end far from the head portion 1; as shown in fig. 2, the included angle α between the generatrix of the terrace portion 2 and the bottom surface of the header portion 1 is an acute angle. One or more chip grooves 3 are formed in the head 1; the length-diameter ratio of the head part 1 is 6-9mm:7-9mm. In the present application, the diameter of the platform part 2 is designed to gradually decrease from one end close to the head part 1 to one end far away from the head part 1; the platform part 2 is retracted to a certain degree, so that when the bone is planted, the bone beside the platform part is not extruded, and formation of new bone is facilitated. Considering that the implant of the application can be planted only by being specially used for posterior teeth, if the implant can be planted, on one hand, the implant needs to be short because the maxillary sinus is arranged above the maxilla and the neural tube is arranged below the mandible; on the other hand, considering that the implant needs to obtain a certain initial stability, in order to increase the surface area of the implant, the diameter of the implant needs to reach 7-9mm. Therefore, considering comprehensively, in the present application, the aspect ratio of the head part 1 is 6 to 9:7-9.

In the special oral implant for posterior teeth provided by the embodiment of the application, in order to increase the surface area, the special implant for immediate posterior tooth implantation is fine threads. The implant has strong osseointegration capability, and the oral implant special for posterior teeth is made of four-grade titanium. The head 1 is of solid construction.

In the oral implant for posterior teeth provided in the embodiment of the present application, as shown in fig. 2, in an embodiment, the platform portion 2 is a circular truncated cone, and an included angle α between a generatrix of the platform portion 2 and a bottom surface of the head portion 1 is 20 ° to 80 °.

In the oral implant for posterior teeth provided in the embodiment of the present application, as shown in fig. 1 to 3, in an embodiment, the platform portion 2 includes a horizontal thread segment 21; by arranging the platform part 2 to comprise a horizontal threaded section 21, the osseointegration is facilitated by the fastening of the horizontal threads.

In another embodiment, the outer surface of the platform part 2 is a smooth arc surface, as shown in fig. 6 to 8, the outer surface of the platform part 2 can be set to be a smooth arc surface, so that the smooth surface is exposed outside bones and is in contact with soft tissues, thereby not only ensuring the initial stability of the implant, but also avoiding plaque from accumulating on the exposed implant, and reducing the probability of peri-implantitis.

In the special oral implant of back tooth that the embodiment of this application provided, as fig. 1 and 6, the one end that head 1 was kept away from to platform portion 2 still is equipped with base station mounting groove 22, the periphery of base station mounting groove 22 is equipped with platform transfer area 23, and base station mounting groove 22 can be regarded as the one end of keeping away from head 1 with platform portion 2 and is slotted to around by its center, and remaining position is platform transfer area 23. In one embodiment, the platform transfer zone 23 is a ring-shaped structure, and the ring width may be, for example, 0.2mm to 0.5mm. Still be equipped with platform transfer district 23 on platform portion 2, after the base station was installed through base station mounting groove 22 at platform portion, the platform transferred and can form certain space between district 23 and the base station and for bone combination portion, does benefit to the plant bone combination, and the bone can slowly grow into bone combination portion after the planting body is implanted, does benefit to 2 bone combinations of platform portion.

In the oral implant for posterior teeth provided in the embodiment of the present application, as shown in fig. 2 to 3 and 7 to 8, in the oral implant for posterior teeth provided in the embodiment of the present application, the head 1 includes a guide portion 11 and a mounting portion 12 connected to each other; the mounting portion 12 is connected to the platform portion 2.

In the oral implant for posterior teeth provided in the embodiments of the present application, as shown in fig. 2 to 3 and 7 to 8, the guide portion 11 is a smooth surface; and has certain self-tapping property and cutting ability. The guide 11 has a triangular cross-sectional shape.

In the oral implant for posterior teeth provided in the embodiments of the present application, as shown in fig. 1 to 3 and 6 to 8, the mounting portion 12 is a cone; the diameter of the mounting portion 12 gradually increases from the end away from the platform portion 2 to the end close to the platform portion 2.

In the oral implant for posterior teeth provided in the embodiments of the present application, as shown in fig. 1 to 3 and 6 to 8, the mounting portion 12 includes an inclined thread section 121. The pitch of the helical thread segments 121 is equal between adjacent threads. The advantage of this design is that maximum surface area is obtained. Wherein the pitch refers to the spacing between adjacent 2 threads in the axial direction of the head 1. In some embodiments, the pitch between adjacent threads of the pitched thread segment 121 may be, for example, 1-1.2mm, 1-1.1mm, or 1.1-1.2mm, etc.

In the oral implant for posterior teeth provided in the embodiment of the present application, as shown in fig. 2 to 3 and 7 to 8, the thread depth of the oblique thread segment 121 gradually increases from the end far away from the platform portion 2 to the end near the platform portion 2. The advantage of design like this is that increase the planting body self tapping, does benefit to the initial stage stability that promotes the planting body. Wherein the thread depth refers to the thread height of each thread in the respective section. In one embodiment, the thread depth is 0.5-1.2mm.

In the oral implant for posterior teeth provided by the embodiment of the present application, as shown in fig. 2 to 3 and 7 to 8, the thread thickness between adjacent threads of the oblique thread section 121 is equal. The advantage of this design is that the implant body can not generate a large amount of heat in the process of implantation, and the necrosis of alveolar bone can be avoided. The thread thickness refers to the thickness of each thread outer side of each thread in the oblique thread section 121 in the axial direction of the head 1. In some embodiments, the thread thickness of the diagonal thread segments 121 is between 0.1 and 0.5mm.

In the oral implant for posterior teeth provided by the embodiment of the present application, as shown in fig. 2, an included angle between a working surface of each thread in the inclined thread section 121 and a radial direction of the head 1 is β, and β is greater than or equal to 5 ° and less than or equal to 30 °. Such a design facilitates implant implantation and reduces frictional heat generation. In some embodiments, 5 ° ≦ β ≦ 15 °, or 15 ° ≦ β ≦ 30 °, and the like.

In the oral implant for posterior teeth provided in the embodiments of the present application, as shown in fig. 1 to 2 and 6 to 7, one or more chip flutes 34 are provided on the head 1; the chip groove 34 extends from the mounting portion 12 to the guide portion 11. Further, the number of the junk slots 34 may be 2, for example. More for example, may be symmetrically distributed on the head 1. Such design makes at the implant implantation in-process, collects cancellous bone, reduces pressure, avoids the heat production, does benefit to the osseointegration and forms, has certain anti-rotation of adversity effect simultaneously. In one embodiment, the flutes 34 have a depth of 1.0 to 1.5mm, 1.0 to 1.3mm, or 1.3 to 1.5mm, etc. The diameter is 4.1-9mm, 4.1-6 mm, 6-9mm, etc. The length is 6-9mm, 6-8 mm, or 8-9 mm.

In the oral implant special for posterior teeth provided by the embodiment of the application, the length of the head 1 is 6-9mm, and the diameter of the head 1 is 7-9mm.

In the oral implant special for posterior teeth provided by the embodiment of the application, the length-diameter ratio of the platform part 2 is 1-4:5-8.8. The platform part 2 has a length of 1-4 mm and a diameter of 5-8.8mm.

In some embodiments of the present application, the length of the platform 2 may be 1 to 4mm, 1 to 2mm, 2 to 4mm, or the like.

In some embodiments of the present application, the platform 2 has a diameter of 5mm to 8.4mm at the end remote from the head 1. In some embodiments, the diameter of the platform portion 2 at the end remote from the head portion 1 may be 5mm to 6mm, 6mm to 7mm, 7mm to 8.4mm, etc.

In some embodiments of the present application, the platform 2 has a diameter of 5.5mm to 8.8mm at the end adjacent to the head 1. In some embodiments, the platform 2 may have a diameter of 5.5mm to 8.8mm, 5.5mm to 6.5mm, 6.5mm to 7.5mm, or 7.5mm to 8.8mm, etc. near the end of the head 1.

In the oral implant special for posterior teeth provided by the embodiment of the application, the length of the implant can be set according to actual needs, and can be 6mm to 9mm, for example. More specifically, the thickness may be 6mm, 8mm, 10mm, 12mm, or the like.

In the oral implant special for posterior teeth provided by the embodiment of the application, the diameter of the implant can be set according to actual needs, and can be 6mm-9mm, for example. More specifically, the diameters are divided into 6.0mm, 7.0mm, 8.0mm and 9.0mm to meet the requirements of different parts and bone mass.

In the dental implant for posterior teeth provided by the embodiment of the present application, the surface of the head 1 and/or the platform 2 is a rough surface. The rough surface is obtained by sandblasting the implant surface, for example the head 1 and/or the platform 2, common sandblasting materials including: alumina, titanium oxide, hydroxyapatite, calcium phosphate, and the like. Common acid etching solutions: hydrochloric acid, sulfuric acid, hydrofluoric acid, and nitric acid mixed solution (0.02. After acid etching, the acid etching agent can form a micro-rough surface with the thickness of 0.25-0.5 mu m on the surface of the implant, and can increase the contact area of the implant-bone interface by more than 60 percent.

The utility model discloses another aspect provides a subassembly, the subassembly includes the special oral cavity planting body of back tooth of this invention, still includes the base station (not drawn), the base station with special oral cavity planting body of back tooth is connected. 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 posterior dental implant may be connected to each other by a platform 2. Specifically, the base is connected to the base mounting groove 22. Wherein, the base station can be a composite base station in the prior art. In general, the base mounting groove 22 may be a hollow inner hexagonal structure, and the base is connected to the inner hexagonal structure.

The outgoing of the implant is 3 layers of independent packages, and the innermost layer is a sterile titanium tube package; 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 use of the special oral implant for posterior teeth is as follows:

and selecting an implant with proper length and platform height according to the planting requirement. General anesthesia, the piece of cloth is spread in the disinfection, the operation district exposes needs the tooth extraction region, cut the crown of a tooth, divide the root, the root is pulled out in the wicresoft, conventional implant is equipped with the hole (the hole is equipped with to palatal side, ensure that the implant is implanted the back, implant and buccal side bone wall interval >2 mm), confirm suitable high implant with the tour nurse, demolish the planting extranal packing by the tour nurse, take out and open aseptic plastic envelope packing carefully, the implant that will be equipped with aseptic inlayer packing meets with the planting cell-phone head carefully, avoid being contaminated. Carefully implant the implant, the platform 2 is 1-2mm lower than the buccal bone surface, install the healing cap, suture and close the operation area.

To sum up, the special oral implant for posterior teeth provided by the embodiment of the application has the following advantages:

2. In the present application, the diameter of the platform part 2 is designed to gradually decrease from the end close to the head part 1 to the end far away from the head part 1; the platform part 2 is retracted to a certain degree, so that when the bone is planted, the bone beside the platform part is not extruded, and formation of new bone is facilitated.

3. This application still is equipped with the platform on platform portion 2 and shifts the district, after installing the base station in platform portion, the platform shifts and can form certain space between district and the base station and for bone combination portion, does benefit to the planting body bone combination, and the planting body implants the back bone and can slowly grow into bone combination portion, does benefit to 2 bone combinations of platform portion.

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 present 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 may be made by those skilled in the art without departing from the spirit and technical spirit of the present disclosure be covered by the claims of the present application.

Claims

1. The special oral implant for the posterior teeth is characterized by comprising a head part (1) and a platform part (2) which are adjacent, wherein the diameter of the platform part (2) is gradually reduced from one end close to the head part (1) to one end far away from the head part (1); an included angle alpha between a bus of the platform part (2) and the bottom surface of the head part (1) is an acute angle; one or more chip grooves (3) are formed in the head (1); the length-diameter ratio of the head part (1) is 6-9:7-9.

2. The dental implant dedicated for posterior teeth according to claim 1, wherein the platform part (2) is a circular truncated cone; the included angle alpha between the bus of the platform part (2) and the bottom surface of the head part (1) is 20-80 degrees.

3. The posterior dental implant according to claim 1, wherein the platform part (2) comprises a horizontal threaded section (21);

and/or; the outer surface of the platform part (2) is a smooth arc surface.

4. The oral implant for posterior teeth of claim 1, wherein the platform part (2) is further provided with an abutment mounting groove (22) at the end far away from the head part (1), and the periphery of the abutment mounting groove (22) is provided with a platform transfer region (23).

5. The posterior dental implant of claim 4, wherein the platform transfer area (23) is a ring-shaped structure having a ring width of 0.2mm to 0.5mm.

6. The posterior dental implant according to claim 1, wherein the head (1) comprises a guide portion (11) and a mounting portion (12) connected; the mounting part (12) is connected with the platform part (2); the guide part (11) is a smooth surface; the mounting portion (12) includes a tapered threaded section (121).

7. The posterior dental implant according to claim 6, wherein the mounting portion (12) is a cone; the diameter of installation department (12) is from the one end of keeping away from platform portion (2) to the one end that is close to platform portion (2) crescent.

8. The posterior dental implant of claim 6, wherein the pitch of adjacent threads of the oblique thread segment (121) is equal;

and/or the thread depth of the inclined thread section (121) is gradually increased from one end far away from the platform part (2) to one end close to the platform part (2);

and/or the thread thickness between each adjacent thread of the inclined thread sections (121) is equal;

and/or the included angle between the working surface of each thread in the inclined thread section (121) and the radial direction of the head (1) is beta, and beta is more than or equal to 5 degrees and less than or equal to 30 degrees.

9. The posterior dental implant according to claim 1, wherein the flute (3) extends from the mounting portion (12) to the guide portion (11);

and/or the depth of the chip groove (3) is 1-1.5 mm.

10. The posterior dental implant according to claim 1, wherein the surface of the head (1) and/or platform (2) is a rough surface;

and/or the length-diameter ratio of the platform part (2) is 1-4:5-8.8;

and/or the diameter of one end of the platform part (2) far away from the head part (1) is 5mm-8.4mm;

and/or the diameter of one end of the platform part (2) close to the head part (1) is 5.5mm-8.8mm;

and/or the special oral implant for posterior teeth is made of four-grade titanium.