KR20220027548A - Dental Implant Prosthesis - Google Patents

Abstract

The present invention provides a dental implant prosthesis which comprises: a fixture implanted in the alveolar bone; an abutment coupled to the fixture by fastening; and a crown coupled to the abutment, wherein a fastening hole is formed at the upper end of the abutment, a through-hole is formed in the crown to correspond to the fastening hole of the abutment, and thus the abutment and the crown are coupled by assembling a screw fastened to the fastening hole of the abutment through the through-hole of the crown. According to an embodiment of the present invention, the abutment and crown used for implant upper prostheses are fastened with screws instead of bonding with a bonding agent, thereby providing an effect of reducing implant prosthetic procedure time, increasing ease of operation, and facilitating post-operative care. In addition, the abutment and the crown can be easily attached and detached, thereby providing an effect of facilitating removing and repairing the prosthesis when problems occur after implant operation and reducing cost burden of remanufacturing. In addition, an error in thickness due to the bonding agent can be reduced and the bonding agent is not used, thereby providing an effect of being hygienic, reducing stress of dentist and patients due to surgery, and enabling the patients to receive safe and comfortable treatment.

Description

Dental implant prosthesis {Dental Implant Prosthesis}

The present invention relates to a dental implant prosthesis, and more particularly, to a dental implant prosthesis in which an abutment and a crown used for an implant upper prosthesis are fastened with a screw to facilitate implant prosthesis operation and follow-up management.

In general, implant (implant) refers to a replacement that restores when the original human tissue is lost, but in dentistry refers to the implantation of an artificially made tooth replacement. It is a procedure that restores the function of teeth by implanting a tooth root made of titanium, etc., which has no rejection reaction in the human body, in the alveolar bone from which the tooth has escaped, and then fixing the artificial tooth to replace the lost root.

In the case of general prostheses or dentures, the surrounding teeth and bones are damaged over time, but dental implant prostheses do not injure the surrounding tooth tissue. there is.

In addition, dental implant prostheses improve the function of dentures and improve the aesthetics of dental prosthetic restorations for partially and completely edentulous patients as well as for restoration of single missing teeth. Furthermore, it not only disperses the excessive stress applied to the surrounding supporting bone tissue, but also helps to stabilize the dentition.

In the conventional dental implant prosthesis procedure, a fixture that is planted in the gingival bone, that is, the alveolar bone, and serves as the root of the tooth, is etched, the abutment is fastened to the implanted fixture, and then a bonding agent is used. It is performed by bonding the abutment and the crown.

However, when the abutment and the crown are combined using a bonding agent, the following problems may occur.

First, the excess bonding agent is not completely removed, causing inflammation in the patient's gums, which may cause pain to the patient.

Second, when using a bonding agent, the crown is raised due to an inaccurate thickness error, which can cause discomfort to the patient.

Third, once the bonding agent is combined, it is not easy to attach or detach the prosthesis, and severe pain and stress may occur to the patient.

Fourth, the preparation process for bonding is lengthened, and the patient's dental stay time may be prolonged due to the removal of excess bonding agent, and the time required for treatment by dentists and hygienists may increase.

Fifth, if repair is required due to damage to the prosthesis after the abutment and the crown are combined, it may be difficult to remove the prosthesis, which may stress the dentist and the patient, and the cost burden may increase due to remanufacturing.

Republic of Korea Patent No. 10-1406047 (Registration Date 2014.06.03) Republic of Korea Patent No. 10-0807289 (Registration date: 2008.02.19)

The present invention has been devised to solve the problems of the prior art,

It is an object of the present invention to provide a dental implant prosthesis that facilitates implant prosthesis operation and post-management by fastening the abutment and the crown used in the upper implant prosthesis with a screw without bonding with a bonding agent.

A dental implant prosthesis according to an embodiment of the present invention provided to achieve the above object includes a fixture implanted in the alveolar bone, an abutment fastened to the fixture, and a crown coupled to the abutment In the implant prosthesis, a fastening hole is formed in the center of the abutment, a through hole is formed in the crown to correspond to the fastening hole of the abutment, and the abutment and the crown pass through the through hole of the crown and the abutment It is characterized in that it is coupled by assembling a screw fastened to the fastening hole.

The fixture is provided with an insertion hole in the center into which the lower end of the abutment is inserted, and a coupling hole in which the fastening member inserted into the fastening hole of the abutment is fastened to the lower portion of the insertion hole, and the lower end of the abutment is the insertion hole of the fixture It is inserted into, characterized in that it is coupled to the fixture by the fastening force of the fastening member inserted into the fastening hole of the abutment is fastened to the coupling hole of the fixture.

And, inside the fastening hole of the abutment, it is characterized in that the first stepped portion over which the head portion of the fastening member is formed is formed.

In addition, the abutment is provided with a threaded portion integrally coupled to the coupling hole of the fixture at the lower end inserted into the insertion hole of the fixture, and the abutment has a lower end inserted into the insertion hole of the fixture and the screw portion is coupled to the fixture It is characterized in that it is coupled to the fixture by a tightening force fastened to the hole.

And, it is characterized in that a second stepped portion is formed inside the through-hole of the crown to accommodate the head portion of the screw, and a crown finishing material is filled in the through-hole of the crown to which the screw is assembled.

According to an embodiment of the present invention, the implant prosthesis operation time can be reduced by fastening and coupling the abutment and the crown used in the upper implant prosthesis with a screw rather than a bonding agent, thereby improving the easiness of the operation, and post-operative management is easy There is one effect.

In addition, since the abutment and the crown can be easily attached and detached, it is easy to remove and repair the prosthesis when a problem occurs after the implant procedure, and there is an effect of reducing the cost burden at the time of remanufacturing.

In addition, it is possible to reduce the thickness error due to the bonding agent, it is more hygienic by not using the bonding agent, and it is possible to reduce the stress of the doctor and the patient according to the procedure, as well as to receive safe and comfortable treatment.

1 is an exploded front view of a dental implant prosthesis according to an embodiment of the present invention.
Figure 2 is a combined cross-sectional view of a dental implant prosthesis according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing another embodiment of the abutment in the dental implant prosthesis according to an embodiment of the present invention.
Figure 4 is an enlarged view showing the main part of the dental implant prosthesis according to an embodiment of the present invention is filled with a crown finishing material in the through hole of the crown.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description of the present invention is an embodiment in which the present invention may be practiced, and reference is made to the accompanying drawings shown by way of example for the embodiment. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. It should also be understood that the position or arrangement of individual components in each described embodiment may be changed without departing from the spirit and scope of the present invention.

Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

The terms used in the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, which may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. Also, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the whole of the invention, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless specifically stated to the contrary. Also, terms such as “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.

1 and 2, the dental implant prosthesis according to an embodiment of the present invention includes a fixture 100 that is implanted in the alveolar bone, an abutment 200 that is fastened to the fixture, and wraps the abutment for final dental use. It is configured to include a crown 300 that forms the outer shape of the implant prosthesis, and a screw 400 that couples the abutment to the crown.

First, the fixture 100 is implanted in the alveolar bone to serve as the root of the tooth, and a screw thread 110 is formed on the outer peripheral surface of the body to facilitate implantation in the alveolar bone, and the lower end of the abutment 200 is inserted in the center of the body. The insertion hole 120 and the coupling hole 130 extending under the insertion hole 120 and having a screw thread are formed. Here, various shapes may be added to the fixture 100 to increase osseointegration.

The abutment 200 serves to connect the crown 300 and the fixture 100 , and has an important effect on the adaptation of the crown 300 , and has a great influence on pressure distribution and durability during occlusion.

Here, the abutment 200 is formed with a fastening hole 210 having a thread in the longitudinal direction in the center of the body, and inside the fastening hole 210 , the head portion of the fastening member 250 is inserted into the fastening hole 210 . A first stepped portion 220 over which (251) is formed is formed. At this time, since the fastening member 250 is inserted into the fastening hole 210 of the abutment 200 and the head part 251 spans the first stepped part 220, the head part 251 of the fastening member 250 is ) has the diameter into which it is inserted.

This, the abutment 200, the lower end is inserted into the insertion hole 120 of the fixture 100, is inserted into the fastening hole 210 of the abutment 200 is fastened to the coupling hole 130 of the fixture 100 is fastened It is coupled to the fixture 100 by the tightening force of the member 250 . That is, in the fastening member 250 inserted into the fastening hole 210 of the abutment 200, the head part 251 is caught in the first stepped part 220 inside the fastening hole 210, and the threaded screw part ( 252) passes through the fastening hole 210 and couples the abutment 200 and the fixture 100 with a fastening force that is fastened to the coupling hole 130 of the fixture 100.

Here, the abutment 200 is a form in which the body of the abutment 200 and the fastening member 250 are separated and assembled, that is, the abutment 200 and the fixture 100 are coupled through the fastening member 250. Although described in the form, as shown in FIG. 3 , the body of the abutment 200 and the fastening member 250 may be integrally formed. That is, the screw portion 252 is integrally formed at the lower end of the abutment 200, and the screw portion 252 of the abutment 200 is fastened to the coupling hole 130 of the fixture 100. It may be provided in an embodiment. .

Another embodiment of the abutment 200 shown in FIG. 3 does not require a fastening member 250, and inserts the threaded part 252 of the abutment 200 into the coupling hole 130 of the fixture 100 and fastens the abutment ( 200) and the fixture 100 are combined.

The appearance of the crown 300 is determined by using the shape of the tooth extracted from the patient and the shape of the opposing tooth. In addition, the crown 300) is made of a noble metal alloy containing gold (Au) or a non-precious metal or semi-precious metal alloy that does not contain gold, or made of a ceramic material, in consideration of aesthetic and functional aspects, It can be manufactured using a variety of dental materials, such as a combination of precious metals, non-precious metals, or semi-precious metals and ceramics.

The crown 300 surrounds the abutment 200 to form the final dental implant prosthesis. That is, the shape of the inner surface of the crown 300 is manufactured in a shape corresponding to the outer shape of the abutment 200 and covered on the outside of the abutment 200 .

In addition, a through hole 310 corresponding to the fastening hole 210 of the abutment 200 is formed in the center of the crown 300 , and the head portion 410 of the screw 400 is accommodated inside the through hole 310 . A second stepped portion 311 is formed.

The screw 400 passes through the through hole 310 of the crown 300 and is fastened to the fastening hole 210 of the abutment 200 . At this time, as for the screw 400 inserted into the through hole 310 of the crown 300 , the head portion 410 is caught by the second stepped portion 311 inside the through hole 310 , and the screw portion 420 having a screw thread is formed. ) is fastened to the fastening hole 210 of the abutment 200 . That is, the abutment 200 and the crown 300 are coupled with the screw 400 to facilitate attachment and detachment of the abutment 200 and the crown 300 .

And, as shown in FIG. 4 , the crown finishing material 500 is filled in the through hole 310 of the crown 300 .

In the treatment of the dental implant prosthesis of the present invention provided as described above, first, the fixture 100 serving as the root of the tooth is implanted in the alveolar bone. And insert the lower end of the abutment 200 into the insertion hole 120 formed in the center of the implanted fixture 100, and then insert the fastening member 250 into the fastening hole 210 of the abutment 200, the abutment 200 and Fasten the fixture 100 . Then, the crown 300 is put on the outside of the abutment 200 and the screw 400 is inserted into the through hole 310 of the crown 300 and the fastening hole 210 of the abutment 200 to be fastened and coupled. Then, the crown finishing material 500 is filled in the through hole 310 of the crown 300 to finish.

As such, the present invention derives the following effects by fastening and coupling the abutment and the crown used in the implant upper prosthesis with a screw without bonding with a bonding agent.

First, foreign substances caused by the bonding agent do not occur, so it is possible to prevent inflammation of the gums of the patient, and to receive hygienic and safe treatment.

Second, since no bonding agent is used, an error in thickness does not occur, so discomfort after the procedure is resolved.

Third, it is easy to attach and detach the abutment and the crown, thereby reducing the stress of the dentist and the patient.

Fourth, since the bonding process is omitted, the operation time can be reduced, and the ease of the operation is improved.

Fifth, when a problem occurs after the abutment and the crown are combined, it is easy to remove and repair the prosthesis, and it is possible to reduce the cost burden at the time of remanufacturing.

Sixth, post-implant management is easy.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the specific embodiments described above. That is, a person of ordinary skill in the art to which the present invention pertains can make numerous changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are Equivalents are to be considered as falling within the scope of the present invention.

100: fixture 110: thread
120: insertion hole 130: coupling hole
200: abutment 210: fastening hole
220: first stepped part 250: fastening member
251: head part 252: screw part
300: crown 310: through hole
311: second stepped portion 400: screw
410: head portion 420: screw portion
500: finishing material

Claims (6)

In the dental implant prosthesis comprising a fixture implanted in the alveolar bone, an abutment fastened to the fixture, and a crown coupled to the abutment,
A fastening hole is formed in the center of the abutment,
A through hole is formed in the crown to correspond to the fastening hole of the abutment,
The dental implant prosthesis, characterized in that the abutment and the crown are coupled by assembling a screw that penetrates the through hole of the crown and is fastened to the fastening hole of the abutment. The method of claim 1,
The fixture is provided with an insertion hole in the center into which the lower end of the abutment is inserted, and a coupling hole in the lower portion of the insertion hole through which the fastening member inserted into the fastening hole of the abutment is fastened,
The lower end of the abutment is inserted into the insertion hole of the fixture, and the dental implant prosthesis, characterized in that it is inserted into the fastening hole of the abutment and coupled to the fixture by the fastening force of the fastening member fastened to the coupling hole of the fixture. . 3. The method of claim 2,
Dental implant prosthesis, characterized in that the first stepped portion over which the head portion of the fastening member spans is formed inside the fastening hole of the abutment. 3. The method of claim 2,
The abutment is provided with a screw portion that is integrally coupled to the coupling hole of the fixture at the lower end that is inserted into the insertion hole of the fixture,
The dental implant prosthesis, characterized in that the lower end of the abutment is inserted into the insertion hole of the fixture, and the screw portion is coupled to the fixture by a tightening force that is fastened to the coupling hole of the fixture. The method of claim 1,
A dental implant prosthesis, characterized in that a second stepped portion over which the head portion of the screw is accommodated is formed inside the through hole of the crown. The method of claim 1,
A dental implant prosthesis, characterized in that the crown finishing material is filled in the through hole of the crown to which the screw is assembled.

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