KR101495480B1 - links abutment connector - Google Patents

Abstract

The present invention relates to a link abutment connector that is configured to be divided into a link and a connector. The link is an abutment that is directly coupled with a fixture which is implanted into a gum. The connector is an abutment for prosthetic appliance casting. According to the present invention, the discoloration and strength reduction of the link can be prevented during the casting of the prosthetic appliance in the connector, and the manufacturing of the prosthetic appliance can be precise since the prosthetic appliance is cast based on connector separation.

Description

Link abutment connector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a link abutment connector for use in a dental implant, and more particularly, to a link abutment connector for a dental implant, The present invention relates to a connector abutment connector, which is capable of protecting the patient's body and providing a satisfactory implant treatment by blocking the influence of casting.

In general, the primary purpose of dental prosthodontic treatment is to restore the function of patients who have difficulty in chewing, pronouncing, or eating food by damaging or losing their teeth. In animals, teeth may be the primary means of attack, Typical functions are authoring and pronunciation. In other words, in order to ingest nutrition by digesting food through peristaltic motion and segmental motion in the internal organs, the teeth are crushed in the oral cavity to make a proper size to be mixed with the saliva, To adjust the flow to help you pronounce the correct pronunciation.

If you do not have teeth, you will not be able to grind food properly and you will always have to eat only liquid foods. Therefore, proper nutritional supply will be difficult and the body will be in a helpless condition with no power, and the immune status will deteriorate and the resistance to disease will be lowered and sometimes it will be in serious condition. In addition, since proper stimulation is not given to the ridge, when the lower alveolar bone is gradually absorbed and disappeared, the deformation of the face will come and the vicious circle of the worse situation will wait. If there is no tooth in the pronunciation, it is impossible to pronounce the correct pronunciation because the air can not be controlled through the oral cavity. It is obvious that it will be a big obstacle to social life such as deterioration of physical health, passive interpersonal relationship and depression caused by it. Therefore, it is difficult to say that dental prosthesis is a perfect solution to all of the above problems, but it is clear that it can play a big role indeed.

Dental prosthesis therapy implies replacing a natural tooth with a partially or entirely lost tooth in the oral cavity, replacing the tooth root with a metal inserted into the alveolar bone, and then forming an artificial tooth. That is, a fixture that is an implant fixture composed of titanium or the like, an abutment as an abutment fixed on the fixture, an abutment screw as a typical fastening means for fixing the abutment to the fixture, And a prosthesis as an artificial tooth fixed to the abutment.

For example, Korean Patent Registration No. 20-0392305 discloses an "integral implant ".

Wherein the registration room comprises: a fixture having a fixed plane extending from the fixture coupling surface formed on the upper side to a lower side and having threads formed on an outer peripheral surface of the fixture; And a prosthesis engaging surface extending inversely to the gingival contact surface to support the artificial tooth.

However, due to the abutment which is integrally formed in the registration room, the temperature of the abutment is abruptly increased during the process of joining the abutment with the hot metal casting when the prosthesis is cast in the abutment, There is a problem that the risk of fracture may be increased.

Korean Registration Practice: Registration No. 20-0392305

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an abutment which is directly coupled to a fixture placed on a gum and an abutment for processing a prosthesis through a metal cast, It is an object of the present invention to provide a link abutment connector capable of preventing abutment from being damaged such as discoloration and strength reduction due to casting.

It is another object of the present invention to provide a link abutment connector capable of maintaining intimate engagement and distributing the load as the prosthesis is cast by inducing screw fastening between the abutments constituting the segment without using an adhesive agent to be.

The fixing screw 300 is inserted into the fixture 400 and is fixed to the fixture 400 by being fixed to the fixture 400. While the gums are healed, the shape of the gums is guided so as to correspond to the cervical portion, (100) in which a male connector (142) is formed,

A second hollow hole 212 in which an inner region is perforated so as to allow the fastening screw 300 to pass therethrough, a male screw portion 212 on an inner surface of the inner hollow portion of the first hollow hole 212 so as to mesh with the female screw portion 142 A coupling groove 210 in which an inner region is hollowed to allow the link abutment 100 to be inserted therein, a coupling groove 210 formed in the coupling groove 210 so as to be accommodated in the corresponding link abutment due to the engagement of the female screw portion and the male screw portion, A casting jaw 230 protruding in the circumferential direction in the seating part and having an upper end section to prevent the prosthesis from being supported and fixed and flowing downward; An outer surface portion 250 extending upward in the shape of a cylinder upward from the adhered portion, an outer surface portion 250 protruding upward from the adhered portion in a cylindrical shape, A concave portion 260 formed to have a diameter larger than that of the outer surface portion, a concave portion 260 formed to surround the outer circumferential surface of the concave portion in the shape of a circular arc to prevent rotation of the impression material used in the impression- (Not shown).

The connector 200 may further include a bushing 204 formed at a boundary region between the coupling groove 210 and the second hollow hole 212 so as to prevent the coupling screw 300 from penetrating downwardly. have.

As described above, according to the structure of the present invention, the connector is divided into a link, which is an abutment directly coupled to the fixture placed on the gum, and an abutment to which the prosthesis is cast, It is possible to prevent discoloration and drop in strength of the link during casting and to provide a condition for manufacturing a precise prosthesis by separating only the connector.

In addition, it is possible to prevent the link with the fixture from being broken by preventing the link strength from being directly coupled to the fixture.

In addition, it is possible to prevent the dropout between the links and the connectors by inducing the tightening of the screws.

1 is a perspective view of a link connector abutment according to the present invention;
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
Fig. 3 is a sectional view of Fig. 1; Fig.
Fig. 4 is a use state diagram of Fig. 1. Fig.

The present invention relates to a link connector abutment, which is divided into a link for directly connecting to a fixture mounted on a gum and a connector to which a prosthesis is cast, thereby preventing a decrease in strength and discoloration occurring in the link during casting of the prosthesis It should be noted that the invention relates to a link connector abutment which improves the sense of security in prosthesis casting and allows tight coupling between the two to prevent fracture and dislocation.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims. And, throughout the specification, like reference numerals refer to like elements.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG.

In the conventional integrated abutment, when the metal is cast to bond the prosthesis closely, the temperature of the abutment rises rapidly during the process of bonding the high temperature metal casting and the abutment, The outer surface of the abutment is worn out because the strength is lowered and the polishing process is performed due to the problem of the metal oxide film so that compatibility with the fixture placed on the gum is deteriorated and the strength is lowered The maintenance of the abutment was decreased and the patient's satisfaction with the implant treatment was not improved.

1 and 2, the link abutment and the connector for casting used in the present invention are divided into a link abutment and a connector. Accordingly, when only the connector is separated from the prosthesis, A link abutment which is directly coupled to a fixture mounted on the fixture can be prevented from being deteriorated in strength and discoloration, and the retention force of the link abutment can be enhanced. In addition to the advantage that the risk of fracture can be reduced, By using the removable attachment method, it is possible to replace the connector only by replacing only the connector, so that the satisfaction of the patient's operation can be improved. Respectively.

In order to explain the structure of the present invention, a fastening screw is passed through an inner area of the fixture and is fixed to the fixture by being engaged with the fixture. While the gum is healed, the shape of the gum is guided so as to correspond to the cervical portion, A link abutment 100 in which a female screw portion 142 is formed,

A second hollow hole 212 in which an inner region is perforated so as to penetrate the tightening screw 300, a male screw portion 212 on the inner surface so as to mesh with the second hollow hole and engage with the female screw portion 142 A coupling groove 210 in which an inner region is formed to be hollow so that the link abutment can be drawn in, a coupling groove 210 formed in a cross-section so as to be accommodated in the link abutment due to the engagement of the female screw portion and the male screw portion A casting jaw 230 protruding in the circumferential direction in the seating part and having an upper end to prevent the prosthesis from flowing downward, a plurality of teeth 230 spaced inward from the outer circumferential surface of the casting jaw boundary area, An outer surface portion 250 extending upwardly from the contact portion so as to have a cylindrical shape, and an outer surface portion 250 protruding from the upper surface of the outer surface portion, A concave portion 260 having an enlarged diameter and maintaining a balance during the casting of the prosthesis, a plurality of teeth 262 for preventing rotation of the corresponding connector in the casting operation, which has an arc shape at regular intervals around the outer circumferential surface of the concave portion, And a connector 200 including a rotation preventing groove 262. [

Specifically, the link abutment 100 includes a first hollow hole 102 whose upper and lower inner perforations are perforated so that the fastening means can pass therethrough, and a second hollow hole 102 corresponding to the inner shape of the fixture so as to be coupled to the fixture And a tapered shape that protrudes in a circumferential direction in a boundary region between the lower portion of the connection and has a larger diameter toward the upper side. When the gum is healed, the shape of the corresponding gum is aligned with the cervical portion A supporting jaw 130 having an upper end section with a diameter enlarged in a boundary region of the gingival support and preventing the connector from flowing downward, And a connection upper portion 140 formed to protrude at a diameter corresponding to the coupling groove 210. The female coupling portion 142 surrounds the outer peripheral surface of the coupling upper portion, It can be generated.

At this time, the gingival support 120 protrudes in the circumferential direction with an angle inclined by 10 to 20 degrees with respect to the central axis of the corresponding link abutment 100 as a portion where the corresponding gums directly abut, So that the formation of the gum can be induced in a shape corresponding to the cervical portion of the corresponding gum.

The supporting jaw 130 may be swollen upward due to edema or inflammation during the formation of natural gums due to the corresponding gingival support. That is, the supporting jaw 130 may have a diameter larger than that of the gingival support, It is also possible to prevent the connector 200 from swelling downward by supporting the connector 200, thereby protecting the body of the implant operator. In addition, the load applied to the fixture 400 can be dispersed as the connector and the prosthesis are cast due to the support jaws.

The connector 200 is formed with a casting jaw 230 to prevent the corresponding prosthesis from flowing downward as the prosthesis is cast, that is, a portion of the upper end of the casting jaw is supported by a prosthesis, A high prosthesis can be induced to be cast. Further, by reducing the contact area of the metal casting through the tight contact portion 240, it is possible to prevent the shape change due to the high temperature and to minimize the corner portion, that is, the corner portion so that the metal casting can be closely contacted, .

In addition, the outer surface portion 250 can induce the manufacture of a prosthesis corresponding to the shape of the patient's mouth as the length of the outer surface portion varies according to the height of the tooth and the surrounding tooth, that is, the length of the tooth subjected to the implant treatment. The satisfaction of the implant treatment can be improved.

Further, as the casting step 230 is formed on the lower side with respect to the outer surface portion 250, the recess 260 is formed on the upper side to improve the unbalance of the weight difference and only the connector 200 is separated, By maintaining the orthodontic state of the prosthesis by placing it on the work table with a sense of balance, the prosthesis can be processed with only hand milling without using expensive CAD / CAM equipment in a small dental laboratory to reduce the cost of implant treatment . In other words, the recess 260 may have a diameter corresponding to the diameter of the casting jaw 230 or an extended diameter of the casting jaw 230, so that the balance of the connector 200 can be maintained.

At this time, in order to prevent the impression material used in the operation such as the wax up and impression coing, which is an impression taking operation for acquiring the oral cavity shape of the patient before casting the prosthesis 600, from rotating on the connector 200, The grooves 262 may be recessed in the shape of an arc, and the rotation preventing grooves 262 may be formed at equal intervals or more than three so that rotation of the impression material can be prevented positively. In other words, as the impression material is applied on the connector, the impression material can be fixed through the recessed portion 260 having a diameter larger than the outer surface portion, and is closely contacted with the rotation preventing recess formed in the concave portion, .

The link abutment 100 and the connector 200 are coupled to the fixture through a fastening screw 300, that is, formed between the fastening groove 210 and the second hollow hole 202 of the connector And the fastening means 204 may be constituted by the fastening means by means of the second hollow hole 202 to prevent the fastening screw 300 from entering the connector 200 downward when it passes through the connector 200.

In other words, the fastening means can be formed so that the entry preventing portion corresponds to the diameter of the second hollow hole 202, and is formed at the boundary between the second hollow hole 202 and the fastening groove 210, A bushing 204 having a diameter smaller than that of the second hollow hole 202 is formed to protrude inward so as to prevent the fastening screw 300 from entering the link abutment 100 more than necessary.

In the present invention, the connector 200 is screwed to the link abutment 100 that directly engages with the fixture 400 to form a tight connection with the link abutment 100, 100), it is possible to prevent deterioration of strength and discoloration and improve retention of the link abutment. In addition, since screw tightening between the link abutment and the connector is induced, tight coupling between the link abutment and the connector can be prevented.

More specifically, only the connector 200 is affected by the casting of the prosthesis, so that damage to the link abutment 100 can be prevented, the connector is detached to process the prosthesis, and the connector abutment So that a more precise prosthesis can be manufactured. In addition, when the prosthesis is broken or damaged after the implant treatment, it is possible to replace only the connector, thereby reducing the cost of the expensive implant treatment, so that more patients can be treated.

100: Link abutment 102: First hollow hole
110: connection lower part 120:
130: support jaw 140: connection top
142: Female thread part 200: Connector
202: second hollow hole 204:
210: fastening groove 212: male thread
220: seat part 230: casting jaw
240: tight contact portion 250: outer surface portion
260: recess 262: anti-rotation groove
300: fastening screw 400: fixture
500: Gum 600: Prosthesis

Claims (2)

The fixing screw 300 is inserted into the fixture 400 and is fixed to the fixture 400 by being fixed to the fixture 400. While the gums are healed, the shape of the gums is guided so as to correspond to the cervical portion, (100) in which a male connector (142) is formed,
A second hollow hole 202 having an inner region perforated so as to penetrate the fastening screw 300, a male screw portion 212 on the inner surface so as to mesh with the second hollow hole and engage with the female screw portion 142 A coupling groove 210 in which an inner region is hollowed to allow the link abutment 100 to be inserted therein, a coupling groove 210 formed in the coupling groove 210 so as to be accommodated in the corresponding link abutment due to the engagement of the female screw portion and the male screw portion, A casting jaw 230 protruding in the circumferential direction in the seating part and having an upper end section to prevent the prosthesis from being supported and fixed and flowing downward; An outer surface portion 250 protruding upward in the shape of a cylinder from the close contact portion, and an outer surface portion 250 protruding upward from the close contact portion in a cylindrical shape, A recess 260 formed to have a diameter larger than that of the outer surface of the sacrificial layer 260, a recess 260 formed in the shape of a circular arc around the outer circumferential surface of the recess, and a recess formed to prevent rotation of the impression material used in an impression- And a plurality of rotation preventing grooves (262).
The method according to claim 1,
The connector 200 is formed in a boundary region between the coupling groove 210 and the second hollow hole 202 and includes a locking protrusion 204 for preventing the locking screw 300 from penetrating downwardly Characterized in that the link abutment and the casting connector used therefor.

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