KR101446072B1 - Healing abutment having impression coping function - Google Patents

Abstract

The present invention relates to a healing abutment used during treatment using dental prosthesis and, more specifically, to a healing abutment capable of impression taking without separation of the healing abutment. Provided in the present invention is a healing abutment which comprise a coupling unit including a polygonal inserting protrusion corresponding to a shape of polygonal groove of a fixture planted on the alveolar bone; a lower body integrally formed toward the upper side of the coupling unit and formed in a form having the diameter become shorter upward; a cut surface formed on the both sides of the upper body in a symmetric form; a concave groove formed on the outer circumferential surface of the upper body except for the cut surface; and a coupling hole formed to penetrate the coupling unit on the upper body.

Description

{HEALING ABUTMENT HAVING IMPRESSION COPING FUNCTION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a healing abutment used in the treatment of a dental prosthesis, and more particularly, to a healing abutment capable of making an impression without detaching a healing abutment.

In general, teeth play a role in helping digest food well by crushing or grinding. If these teeth are lost, the food can not be chewed properly and the digestion is not easy, so that not only the food can be freely consumed, but also the nutrient intake is difficult. Thus, teeth have been recognized as an important part of the body since ancient times, and play an important role in maintaining a healthy life.

Since human teeth are replaced with permanent teeth once in childhood, new teeth are not created when teeth are lost. Therefore, dentistry restores lost teeth and surrounding tissues through prosthetic treatment, .

However, this general dental treatment method can not be tolerated because it causes some damage to adjacent teeth, surrounding gums, and bone tissue. If dentures are used, it will lead to a reduction in chewing ability In addition, it had disadvantages such as discomfort or foreign body sensation.

An artificial tooth implantation method has been proposed to overcome the drawbacks of this universal prosthetic treatment method. According to this method, it is possible to restore all functions and appearance almost the same as a natural tooth without damaging surrounding teeth or tissues when a tooth is defective.

In this way, the implants that have been spotlighted in the recent years can be used as artificial alternatives to natural teeth by providing an artificial tooth by osteosynthesis in the alveolar bone. Implants generally consist of three parts: a fixture corresponding to artificial root, an abutment corresponding to an abutment, and an artificial tooth. A fixture is a fixture that is implanted in the alveolar bone of a missing tooth area, such as the root of a natural tooth, to support an artificial tooth. The abutment is also called an abutment, and it is connected to the fixture which is planted on the gum and implanted in the alveolar bone and the artificial tooth.

Artificial teeth are fixed in the oral cavity by abutment and are designed to reproduce the same shape and function as natural teeth.

The implantation process for recovering lost teeth using such an implant is as follows.

The transplantation process is largely divided into surgical procedures, ie, surgical procedures and prosthodontic restorations. Basic tests such as blood tests are performed to check compliance before surgery, and the site of bone grafting In order to evaluate the amount, oral examination and radiographic examination are preceded. When these series of examinations are completed, they are entered into a surgical procedure, which is referred to as a primary operation. First, in order to transplant an artificial root corresponding to a root into an alveolar bone under anesthesia, the gums are opened, the alveolar bone tissue is exposed, Suture the gums once.

However, the conventional implants are mainly made of a cylindrical shape or a root-like shape having a rounded shape, and the shape and size of the cutting edge are processed to a constant size irrespective of the diameter or length of the implant, The lack of ability leads to the inconvenience that the alveolar bone should be enlarged sufficiently before using the cutting tool. As a result, it is difficult to obtain a strong initial fixation force with the alveolar bone.

Then, in the case of an integral implant with a gingival perforation after 3 to 6 months, depending on the bone quality, the impression can be immediately made to produce a processed value. In the case of the split type, a second operation is performed, The gingival suture is cut once again and the healing abutment is placed on the top of the fixture that has already been implanted in the alveolar bone. When the gingiva is fully healed, the impression is made and the abutment is tightened and the process value is connected. However, when making an impression, it is troublesome to remove the healing abutment for the impression coping, confirm the joint by radiography, and conclude the healing abutment after the impression is made.

A related art is Korean Patent No. 10-0841218 (registered date June 19, 2008) 'implant device'.

It is an object of the present invention to provide a healing abutment which can be used to make an impression without separating the healing abutment after it is applied to a fixture, and which does not require a separate impression taking mechanism.

Another object of the present invention is to reduce the number of times the healing abutment is detached, reduce the patient's bone loss, enable faster healing, especially in patients who have undergone alveolar bone grafting, .

In addition, the period of attachment of the gingiva and healing abutment becomes longer, and the fundamental healing function can be stably performed.

The present invention provides a fixture comprising: a fastening portion having a polygonal fitting protrusion corresponding to a polygonal groove shape of a fixture placed on an alveolar bone; A lower body integrally formed above the coupling portion and having a diameter widened toward the upper portion; An upper body integrally formed on the upper portion of the lower body and formed in a tapered shape having a smaller diameter toward the upper portion; A cutting surface formed symmetrically on both sides of the upper body; A concave groove formed on an outer circumferential surface of the upper body excluding the incision surface; And a fastening hole formed in the upper body to penetrate the fastening portion.

The incision surface may have a curved portion at the lower end, and the height of the upper body is preferably in the range of 2.8 to 4.0 mm.

In addition, the height of the lower body may be variously set in the range of 1 to 9 mm.

Preferably, the taper angle of the upper body is in the range of 3 to 9 degrees, and the concave groove is formed at a height of 0.25 to 2.0 mm lower than the upper end of the upper body.

The fastening portion may have a polygonal shape, and the cut surface may be formed parallel to two sides of the fastening portion.

The present invention can reduce the side effects of healing abutment detachment by not repeatedly attaching and detaching after the healing abutment treatment and by making it possible to make an impression without separating the healing abutment, The number of times of detachment of the patient can be reduced to enable quick healing of the patient, and the convenience of the doctor's operation can be improved.

FIG. 1 is a perspective view illustrating a healing abutment capable of impression taking according to an embodiment of the present invention;
FIG. 2 is a front view showing a healing abutment capable of impression taking according to an embodiment of the present invention;
3 is a plan view showing a healing abutment capable of impression taking according to an embodiment of the present invention,
FIG. 4 is a partial cutaway view showing a state where an impression cap is coupled to a healing abutment capable of impression taking according to an embodiment of the present invention;
FIG. 5 is a view illustrating a combination of an impression cap and a healing abutment capable of impression taking according to an embodiment of the present invention;
FIG. 6 is an exploded perspective view illustrating a healing abutment capable of impression taking according to another embodiment of the present invention; FIG.

Hereinafter, a healing abutment capable of making an impression according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a healing abutment capable of making an impression according to an embodiment of the present invention, FIG. 2 is a front view showing a healing abutment capable of impression making according to an embodiment of the present invention, FIG. 6 is a plan view showing a healing abutment capable of impression taking according to an embodiment of the present invention. FIG.

As shown in the figure, the healing abutment 100 according to the embodiment of the present invention is fastened to a fixture (not shown) placed in the alveolar bone using a separate screw (not shown).

The healing abutment 100 according to the present invention includes a fastening part 110 having a polygonal fitting protrusion 112 corresponding to the shape of a polygonal groove of a fixture placed on the alveolar bone, And a lower body 120 formed integrally with the lower body 120 and formed in a shape that the diameter of the upper body 120 increases toward the upper portion of the upper body 120. The upper body 120 is formed integrally with the lower body 120 and has a tapered shape, A cutout surface 132 formed symmetrically on both sides of the upper body 130 and a recessed groove 134 formed on an outer circumferential surface of the upper body 130 except for the cutout surface 132, And a fastening hole 140 formed in the upper body 130 to pass through the fastening part 110.

A polygonal groove is formed in the upper part of the fixture, so that it can be coupled with the prosthesis coupled to the fixture with a certain directionality.

Generally, a hexagonal groove is formed, but it is not limited to a hexagonal shape and may have a pentagonal shape, an octagonal shape, or a D shape.

The fastening portion 110 of the healing abutment 100 is a portion to be fitted to the upper end of the fixture and includes a fitting protrusion 112 having a shape corresponding to the polygonal groove so as to be able to engage with the fixture in a predetermined direction . In the illustrated embodiment, the fitting protrusion 112 has a hexagonal shape.

When the fastening portion 110 of the healing abutment 100 is fitted to the upper end of the fixture, the fitting protrusion is inserted into the polygonal groove, and the healing abutment 100 is prevented from rotating in a coupled state.

The lower body 120 is a part for determining the recovery form of the gingiva and the soft tissue, and has a shape that widens toward the upper part.

The upper body 130 is provided with a cut surface 132 and a concave groove 134.

The incision surface 132 is formed symmetrically on both sides of the upper body 130. That is, the two cut surfaces 132 are formed as parallel planes.

Further, it is preferable that the incision surface 132 is formed parallel to the two surfaces of the fitting projection 112.

The cut-out surface 132 serves to prevent the impression cap from turning when it is coupled with the impression cap. Also, in some cases, the impression may be obtained without tightening the impression cap. In this case, the impression material and the healing abutment are also prevented from rotating.

This is to enable the healing abutment 100 to identify the direction of the fixture concave groove through the cut surface 132 in a state where the healing abutment 100 is coupled to the fixture.

In other words, the shape of the polygonal groove formed on the fixture can be confirmed by the incision surface 132.

When the patient's oral environment is scanned using an oral scanner, the incision surface 132 has an effect of enabling the orientation of the fixture to be identified without detaching the healing abutment 100.

If the upper body 130 has a circular cross section without the incision 132, the directionality of the fixture can not be identified from the healing abutment.

In addition, the incision surface 132 also has an effect of facilitating the attachment / detachment of the impression cap to be described later.

The incision surface 132 has a curved surface portion 132a at the lower end. The curved surface portion 132a has the effect of reducing irritation when the oral tissue contacts the healing abutment 100. [

If the curved portion 132a is not provided, sharp edges are formed at the lower end of the incision surface 132 to stimulate the skin tissue to be in contact.

The height h1 of the upper body 130 is preferably in the range of 2.8 mm to 4.0 mm. When the height is less than the above range, it is difficult to secure a strong coupling force with the impression cap. When the height exceeds the above range, the upper body 130 comes into contact with the opposing portion, .

The upper body 130 has a shape in which the cross section becomes narrower toward the upper part, which is for smooth coupling with the coupled impression cap.

It is preferable that the taper angle of the upper body 130 is in the range of 3 to 9 degrees.

When the taper angle is less than 3 degrees, the coupling with the impression cap may not be smooth, and when the taper angle exceeds 9 degrees, the impression cap may not be firmly coupled.

The upper body 130 is provided with a concave groove 134. The concave groove 134 is formed only in a region except the cut face 132. [ When the concave groove is provided up to the cut-out surface 132, separation of the impression cap may not be smooth at the time of impression taking.

In addition, the concave groove 134 also plays a role of generating a clicking click sound when engaged with the impression cap. This can also be used to identify whether an audibly correct combination has been made.

The concave groove 134 may be formed at a height of 0.25 mm to 2.0 mm from the upper end of the upper body.

This is for ensuring adequate bonding force, and if it is out of the above range, bonding or separation may not be smooth.

Meanwhile, the height h2 of the lower body 120 is preferably in the range of 1 to 9 mm.

The lower body 120 may have different heights depending on the type and size of the target teeth.

For example, the height of the lower body 120 is 3 mm, 5 mm, and 7 mm, and three kinds of healing abutments may be provided, so that an appropriate height can be selected according to the oral environment of the patient.

FIG. 4 is a partial cutaway view showing a state in which an impression cap is coupled to a healing abutment capable of impression taking according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of the healing abutment In which the engaging portion of the impression cap is shown.

As shown in the figure, the impression cap 200 includes a body 210 having a cylindrical shape, an engagement groove 220 formed in the body 210 and corresponding to an upper shape of the above-described healing abutment, A polygonal plate 230 protruding from the outer surface of the body 210 in a polygonal plate shape and a cross rib 240 formed in a cross shape formed at the upper end of the body.

The engaging groove 220 is provided with the engaging piece 222 corresponding to the concave groove 134 of the healing abutment and the engaging surface 224 corresponding to the shape of the cutting face 132.

Further, a flat surface 212 parallel to the coupling surface 224 may be formed on an outer circumferential surface of the body 210.

The cross rib 240 includes a relatively long piece 242 and a relatively small piece 244 having a longitudinal direction of the long piece 242 or the piece 244, And is preferably formed parallel to the incision surface 132.

This shape is such that the healing abutment 100 is coupled to the fixture and the long piece 242 or the piece 244 is inserted into the fixture 200 with the impression cap 200 coupled to the healing abutment 100. [ So that the direction of the polygonal groove of the polygonal groove can be identified.

When the impression cap 200 is pushed on the healing abutment 200 in a state where the healing abutment 100 is coupled to the fixture, When the body 130 is inserted and the engaging piece 222 of the impression cap 200 is inserted into the concave groove 134 of the upper body 130 of the healing abutment 100, And is firmly coupled to the butt 200.

The healing abutment 200 is formed of a medical metal material such as a titanium alloy and the material of the impression cap 200 is made of a synthetic resin material having elasticity so that the impression cap 200 elastically deforms, And is fitted with the butt 100.

When the impression is obtained by using the impression material in a state where the impression cap 200 is fitted to the healing abutment 100, the impression cap 200 is separated from the impression material while being embedded in the impression material.

Therefore, the impression cap 200 remains on the impression picker, and information such as the direction and height of the fixture can be acquired by using the remaining impression cap 200. [

FIG. 6 is an exploded perspective view illustrating a healing abutment capable of impression taking according to another embodiment of the present invention.

The present embodiment is characterized in that the healing abutment 300 is divided into three parts of the fastening part 310, the sleeve 320 and the body part 330. [

In this manner, the fastening part 310 can be variously changed according to the shape of the fixture, so that the body part 330 can be shared. In addition, since only the coupling part 310 is formed of a metal material, the coupling state can be confirmed using X-ray.

The healing abutment 300 according to the present embodiment includes a fastening part 310 having a polygonal fitting protrusion corresponding to a polygonal groove shape of a fixture placed on an alveolar bone and fastened with the fastening screw with the fixture, A lower body 332 coupled to the upper portion of the coupling portion 310 and having a larger diameter toward the upper portion of the lower body 332, An upper body 333 formed integrally with the upper body 333 and formed in a tapered shape having a smaller diameter toward the upper portion, a cut surface 334 formed symmetrically on both sides of the upper body 333, And a body portion 330 having a concave groove 335 formed on the outer circumferential surface of the upper body 333 except the surface 334 and a sleeve coupling hole 336 corresponding to the outer diameter of the sleeve 320 do.

At this time, the fastening part 310 has a fastening end 312 for fitting into the sleeve 320 at the upper end. In addition, the sleeve 320 has a straight cross section that can identify directionality in at least a part of the section, and the fastening end 312 of the fastening part 310 is fitted with the sleeve in a predetermined direction using a straight- .

As described above, according to the present invention, the healing abutment capable of making an impression has the effect of enabling the use of the method of scanning the mouth or the impression-making method without separating the healing abutment.

Therefore, it is possible to reduce the number of detachment of the healing abutment, thereby healing the patient, and improving the convenience of the doctor's treatment.

100: Healing abortion
110:
120: Lower body
130: upper body
132: incision surface
134: concave groove
140: fastening ball

Claims (7)

A healing abutment which is fastened to a fixture placed on an alveolar bone and is configured to be able to engage with an impression cap,
A fastening part 110 having a square protrusion of a hexagonal shape corresponding to a square shape of a fixture placed in the alveolar bone;
A lower body 120 integrally formed to have a height of 1 to 9 mm above the coupling part 110 and having a larger diameter toward the upper part;
An upper body 130 integrally formed to have a height of 2.8 to 4.0 mm above the lower body 120 and having a tapered shape with a tapered angle in a range from 3 to 9 degrees,
And a curved surface portion (132a) symmetrically formed on both sides of the upper body in parallel with two sides of the hexagonal fitting protrusion and reducing the irritation of the skin tissue contacting the lower portion, wherein the coupling with the impression cap A cut-off surface 132 for preventing the cap from turning and facilitating detachment from the impression cap;
A recessed groove (134) formed at a height of 0.25 to 2.0 mm lower than the upper end of the upper body and formed on an outer circumferential surface of the upper body except for the incision surface to generate click noise when engaged with the impression cap; And
And a fastening hole 140 formed in the upper body 130 so as to penetrate the fastening part 110 and to fasten the fastening means when fastened to the fastening body. delete delete delete delete delete delete

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