CN218899743U

CN218899743U - Combined type restoration body on upper part of implant

Info

Publication number: CN218899743U
Application number: CN202222835519.4U
Authority: CN
Inventors: 葛振林; 舒维娜; 刘晓辉
Original assignee: Lanzhou Kangmei Dental Hospital Co ltd
Current assignee: Lanzhou Kangmei Dental Hospital Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-25
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a combined restoration body at the upper part of an implant, which relates to the technical field of dental implant restoration engineering and solves the technical problems of weak mechanical stability and poor aesthetic property after being arranged on a dental crown in the prior art, and the technical scheme provided by the utility model comprises the following steps: the dental crown and the abutment are provided with a first central screw channel in a penetrating manner, the first central screw channel comprises an upper channel and a lower channel, the upper channel and the lower channel are distributed along the axis direction of the first central screw channel and are mutually communicated, the first central screw channel is provided with a cover which is matched with the upper channel in shape in a penetrating manner, the cover is provided with a covering end for covering a port of the first central screw channel positioned at the upper channel, and the lower channel is matched with the upper end of the abutment and is used for fixing the dental crown on the abutment.

Description

Combined type restoration body on upper part of implant

Technical Field

The utility model relates to the field of dental implant restoration engineering, in particular to the technical field of dental implant upper combined restoration.

Background

With the improvement of the living standard of people, the implant has become the first repair treatment mode after the teeth are lost, the implant comprises an implant with an implant bone embedded in an alveolar bone at the lower part and a prosthesis with an exposed upper part for oral cavity to perform functions, wherein the prosthesis comprises a base with a center screw and a dental crown.

At present, two retaining modes are mainly adopted for the implant dental crown, namely screw retaining and adhesive retaining, wherein the adhesive retaining can ensure the integrity of the dental crown, but a large amount of adhesive used in the adhesive retaining process is easy to remain at the periodontal, so that mucositis around the implant is easy to be caused, and the implant dental crown is failed. And when the bonded and retained dental crowns have the problems of ceramic breakage, abutment loss, loosening of a central screw and the like and need maintenance, the subsequent maintenance work is carried out by damaging the dental crowns, and the maintenance work is generally time-consuming, labor-consuming and material-consuming.

Therefore, compared with the bonding and retaining mode, more clinically, a screw retaining mode is adopted, in the related art, chinese patent CN216221750U discloses a sealing device of a screw retaining type implant prosthesis, which comprises a sealer and a central screw, a crown, a abutment and a central screw channel which are mutually communicated are formed in the implant, the central screw passes through the screw channel and is used for connecting the abutment and the implant, the sealer is arranged above the central screw and is used for sealing the screw channel in the crown, wherein the sealer is made of resin material.

For the above-mentioned published patent, when the inventors embodied this technical solution, it was found that the following drawbacks exist:

1. the mechanical stability is weak; because the plugging device made of resin materials is easy to age and not wear-resistant in the oral cavity, the risk of loosening and falling off in the later period is higher, and the satisfaction degree of patients is low.

2. Poor in aesthetic property; because the resin material filling the central screw hole has high permeability, the occluder cannot be matched with the color of the dental crowns made of zirconia, glass ceramic and the like.

Disclosure of Invention

The utility model aims at: aiming at the technical background, on the technical problems of poor aesthetic property and weak mechanical stability existing after the dental crown is planted, the upper combined dental implant prosthesis is designed, the internal structure of the dental crown is mainly improved, and the dental crown is matched with the cover and the abutment in the subsequent installation and connection process, so that the use effects of firm connection, difficult loosening and attractive appearance are achieved.

The utility model adopts the following technical scheme for realizing the purposes: the utility model provides a dental implant upper portion combination formula restoration, including crown and abutment, run through on the crown and be equipped with first central screw passageway, first central screw passageway includes upper portion passageway and lower part passageway, upper portion passageway and lower part passageway are arranged and are communicate each other along the axis direction of first central screw passageway, it has the lid with upper portion passageway shape adaptation to alternate on the first central screw passageway, be equipped with the cover end on the lid for the port of the first central screw passageway that is located upper portion passageway department is covered, the lower part passageway cooperates with the upper end of abutment for keep the crown on the abutment.

In order to more clearly and completely explain the core technical scheme of the application, additional technical features are added on the basis of the core technical scheme, and the technical scheme is further refined, so that the following technical scheme also exists:

further, the covering surface on the covering end is flush with the occlusal surface of the dental crown and is consistent in shape.

Further, the cover is a conical cylinder.

Further, the cap is in Morse taper retention connection with the first central screw channel.

Further, the Morse taper of the cap ranges from 3 DEG to 8 deg.

Further, the Morse taper of the cap is 8 degrees.

Further, a gap is provided between the cover end of the cover and the open end of the upper passage, and an adhesive agent for sealing the cover and the upper passage is coated on the gap.

Further, the taper difference between the cap and the upper channel is zero.

Furthermore, the cover and the dental crown are made of zirconia or glass ceramic materials.

Further, a second central screw channel is arranged in the base station, and a central screw is matched in the second central screw channel and used for fixing the base station on the implant.

Compared with the prior art, due to the adoption of the technical scheme, the application has the following beneficial effects:

1. has the effect of strong mechanical stability; by designing a first central screw channel with an upper channel and a lower channel on the interior of the dental crown and matching with a cover with a shape and a size matched with the upper channel and the lower channel, after the cover is covered on the first central screw channel, the cover surface at the cover end of the cover fills the hole on the occlusal surface of the dental crown before the first central screw channel is reserved, so that the cover and the dental crown are integrated, wherein two improvement points of the cover exist.

Firstly, the shape of the cover is designed into a conical cylinder, and the shape of the insertion end of the cover is matched with the upper channel, so that the cover can slide into a correct installation position along the conical wall of the upper channel, thereby reducing the operation difficulty of medical staff and further shortening the operation time.

Secondly, after the insertion end of the cap is inserted into the upper channel, a gap of 20 mu m is reserved between the cover end of the cap and the taper wall of the upper channel, and an adhesive is coated on the gap, so that the cap and the dental crown are retained, wherein a part of retention force is from friction force between the insertion end of the cap and the taper wall of the upper channel when medical staff inserts the insertion end of the cap into the upper channel; the other part comes from the adhesion force between the cover end of the cover and the upper channel, so that the cover is more firmly arranged on the dental crown, the cover is not easy to fall off in later use, and the satisfaction degree of patients is further improved.

2. The combined dental implant has the advantages that the combined dental implant has natural and attractive effects, the first aspect is that the cover is designed to be completely matched with the internal form of the first central channel of the dental crown, the second aspect is that the cover is made of zirconia or glass ceramic materials which are the same as the dental crown, the third aspect is that the cover surface of the cover is flush with the occlusal surface of the dental crown and is identical in shape, the form, the material and the color of the cover and the dental crown are completely identical after the cover covers the first central screw channel, and the cover and the dental crown are integrated under the visual observation, so that the combined dental implant at the upper part of the dental implant is more natural and attractive.

Drawings

Exemplary embodiments of the present utility model will be described based on the drawings, wherein the present utility model is not limited to only the exemplary embodiments. In the drawings:

FIG. 1 shows a structural exploded view of an upper dental implant modular restoration according to embodiments described herein;

FIG. 2 shows a bird's eye view of the interior of the mouth after the cap has been overlaid on the first central screw channel according to embodiments described herein;

FIG. 3 shows a schematic perspective view of a lid according to embodiments described herein;

FIG. 4 shows a front view of a cap according to embodiments described herein;

fig. 5 shows a schematic structural view of an upper dental implant combined prosthesis according to embodiments described herein after installation.

Reference numerals:

1-dental crowns; 101-a first central screw channel; 1011-upper channel; 1012-lower channel;

2-a base station; 201-a second central screw channel; 202—a center screw;

3-a cover; 301-cover end; 302—an insertion end;

4-planting.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the utility model. The elements and arrangements described in the following specific examples are presented for purposes of brevity and are provided only as examples and are not intended to limit the utility model.

The terms of directions such as "up" and "down" are described based on the drawings as reference objects throughout, and specifically, the terms of directions such as "implant" as reference objects in fig. 1, where the portion of the implant implanted in the alveolar bone is a lower portion, and the other connecting portions are upper portions, so that the directions described throughout the description can be changed according to the direction of the implant in the oral cavity, and those skilled in the art can choose any one according to specific embodiments.

It should be noted that the words "first," "second," and the like are used throughout to distinguish between features having the same name, and not to imply importance.

Example 1

In order to improve the satisfaction of the patient after the implantation of the dental crown, the present embodiment 1 provides an upper dental implant assembly, which is prepared by modifying the internal shape of the first central screw channel 101 of the dental crown 1 and providing a cover 3 corresponding to the internal shape of the first central screw channel 101 of the dental crown 1, referring specifically to fig. 1 and 3, the occlusal surface of the dental crown 1 is perforated with holes to reserve the first central screw channel 101 before the dental crown 1 is retained.

Referring to fig. 1 and 3, more specifically, an upper combined dental implant prosthesis is provided, which mainly includes a crown 1 and a abutment 2, the crown 1 is mounted on the abutment 2, and an upper channel 1011 and a lower channel 1012 are provided inside the crown 1, wherein the upper channel 1011 and the lower channel 1012 are arranged along an axial direction of a first central screw channel 101 and are communicated with each other, together forming the first central screw channel 101.

In the first aspect, in order to avoid the situation that the implant is dropped due to micro leakage after the implant, the first central screw channel 101 is covered with the cover 3, the cover 3 is divided into the cover end 301 and the insert end 302, after the insert end 302 of the cover 3 is inserted into the first central screw channel 101, the side wall of the cover 3 is in shape of the upper channel 1011, so that the cover end 301 of the cover 3 covers the upper channel 1011, and the cover surface on the cover end 301 covers the hole opened on the occlusal surface of the crown 1, so that the cover 3 is integrated with the crown 1 after the cover 3 is inserted into the first central screw channel 101.

Wherein the cap 3 is firmly retained on the crown 1, mainly from the process of fitting the cap 3 in place by medical staff, and secondarily from the biting force generated by the patient during the later use;

when the medical staff installs the cap 3 on the crown 1, the insertion end 302 of the cap 3 first contacts with the side wall of the upper channel 1011, thereby retaining the cap 3 on the crown 1 by using the friction between the insertion end 302 of the cap 3 and the side wall of the upper channel 1011, thereby ensuring that the cap 3 does not come off the crown 1.

After the medical staff installs the cover 3 on the dental crown 1, when the occlusal surfaces of the upper and lower jaw teeth of the patient are mutually engaged, the occlusal force from the upper and lower jaw teeth makes the insertion end of the cover 3 apply pressure to the side wall of the upper channel 1011 to generate corresponding friction force, thereby ensuring that the patient is not easy to loose and fall off in the subsequent use process, and further improving the satisfaction degree of the patient.

In a second aspect, the lower channel 1012 mates with the upper portion of the abutment 2 such that the crown 1 is secured to the abutment 2 to prevent the crown 1 from falling off the abutment 2.

Example 2

In this embodiment 2, the cover 3 is further thinned and expanded based on the embodiment 1, and refer to fig. 2 to fig. 4.

In some embodiments, to ensure that the occlusal surface of the jaw of the patient after the dental crown is implanted can ensure a normal occlusal relationship, the covering surface of the covering end 301 is flush with and consistent in shape with the occlusal surface of the dental crown 1, and the covering surface is matched with the cusp height of the jaw to form an occlusal relationship with the form of the surrounding dental crown 1.

In some embodiments, to ensure that the cap 3 can perfectly fit the upper channel 1011 after being inserted into the first central screw channel 101, the cap 3 is designed as a tapered cylinder, so that the cap 3 can slide into the correct installation position along the tapered wall of the upper channel 1011, thereby reducing the operation difficulty of medical staff and further shortening the operation time.

In some embodiments, in order to ensure a good microbial seal of the implant system, the cap 3 is connected to the first central screw channel 101 in a Morse taper retention manner, avoiding the accumulation of microorganisms at the gap between the cap 3 and the first central screw channel 101, which would cause subsequent removal of the dental crown 1.

In some embodiments, in order to achieve a better sealing effect of the planting system, the structure of the cover 3 is further designed, the cover 3 is configured as a conical cylinder, the Morse taper of the cover 3 ranges from 3 degrees to 8 degrees, wherein the larger the Morse taper adopted is, the better the mechanical stability between the cover 3 and the first central screw channel 101 is, therefore, in particular, the Morse taper of the cover 3 can be 8 degrees, more in particular, the diameter D of the upper surface of the cover 3 is 3mm, the height H is 2mm, the diameter of the lower surface can be calculated according to the formula 3-2×2×sin α, wherein α is the Morse taper, and when the Morse taper of the cover 3 is 8 degrees, the lower surface diameter of the cover 3 can be obtained by substituting the formula 3-2×2×sin8 degrees.

In some embodiments, in order to facilitate maintenance of the dental implant upper combined restoration to be put into use later, a gap is provided between the cover end 301 of the cover 3 and the side wall of the upper channel 1011, and an adhesive closing the cover end 301 of the cover 3 and the upper channel 1011 is coated at the gap, and the cover end 301 of the cover 3 and the upper channel 1011 are adhered by the adhesive, so that the cover 3 is further firmly mounted on the dental crown 1 without falling off, and specifically, the gap size may be 20 μm.

When the upper combined type restoration of the implant is restored, the cover 3 covering the first central screw channel 101 is ground, so that the dental crown 1 is not damaged, the material cost is saved, and the working time of medical staff is saved.

In some embodiments, to ensure an effective connection between the cover 3 and the upper channel 1011, the taper difference between the cover 3 and the upper channel 1011 is zero.

In some embodiments, in order to ensure the aesthetic property between the cap 3 and the crown 1 after the cap 3 is inserted into the first central screw channel 101, the materials of the cap 3 and the crown 1 are unified into ceramic materials, more specifically, zirconia or glass ceramic materials can be adopted, and the materials have high strength, excellent biocompatibility, good light transmittance, aesthetic property and unique restoration universality, so that the cap 3 has good wearing feeling after the dental implantation is completed by a patient, and the satisfaction degree of the patient after the dental implantation is further improved.

Example 3

In this example 3, on the basis of example 1, a specific embodiment of further thinning and developing the base 2 was developed, and specific reference is made to fig. 1 and 5.

In order to ensure that the abutment 2 can be firmly fixed on the implant 4, thereby ensuring the integrity of the implant upper part combined restoration, a second central screw channel 201 is arranged in the abutment 2, and a central screw 202 is matched in the second central screw channel 201, so that the abutment 2 is fixed on the implant 4 through the central screw 202. The fixed upper portion combined restoration of the implant can be specifically referred to fig. 5, in which the occurrence of periodontal inflammation after the implantation of the crown 1 can be effectively avoided as compared with the conventional manner of using an adhesive.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a dental implant upper portion combination formula restoration, includes dental crown (1) and abutment (2), its characterized in that, run through on dental crown (1) and be equipped with first central screw passageway (101), first central screw passageway (101) are including upper portion passageway (1011) and lower part passageway (1012), upper portion passageway (1011) and lower part passageway (1012) are arranged and are linked together along the axis direction of first central screw passageway (101), it has lid (3) with upper portion passageway (1011) shape adaptation to alternate on first central screw passageway (101), be equipped with on lid (3) and cover end (301) for cover the port of first central screw passageway (101) that are located upper portion passageway (1011), lower part passageway (1012) cooperate with the upper end of abutment (2) for keep dental crown (1) on abutment (2).

2. The dental upper combination restoration according to claim 1, wherein the covering surface on the covering end (301) is flush with and congruent in shape with the occlusal surface of the dental crown (1).

3. The dental upper combination restoration according to claim 1, wherein the cover (3) is a conical cylinder.

4. A dental implant upper combination restoration according to claim 3, characterised in that the cap (3) is connected to the first central screw channel (101) with a morse taper retention.

5. The dental upper combination restoration according to claim 4, wherein the morse taper of the cover (3) ranges from 3 ° to 8 °.

6. The dental upper combination restoration according to claim 5, wherein the morse taper of the cover (3) is 8 °.

7. The dental upper combination restoration according to claim 1, wherein a gap is provided between the covering end (301) of the cover (3) and the open end of the upper channel (1011), and an adhesive closing the cover (3) and the upper channel (1011) is applied to the gap.

8. The dental upper combination restoration according to claim 7, wherein the taper difference between the cover (3) and the upper channel (1011) is zero.

9. The dental upper combination restoration according to claim 1, wherein the cover (3) and the crown (1) are made of ceramic material.

10. The dental implant upper part combined restoration according to claim 1, characterized in that a second central screw channel (201) is arranged in the abutment (2), and a central screw (202) is fitted in the second central screw channel (201) for fixing the abutment (2) on the implant (4).