Bone spreader for dental implant procedure

Abstract

The present invention relates to a bone spreader for spreading a bone graft inserted into a bored hole into which a fixture is to be implanted in the alveolar bone in an implant procedure, and uniformly spreads the bone graft to the periphery inside the bored hole without discharging same to the outside of the bored hole so as to increase the amount of bone tissue, thereby assisting in performing guided bone regeneration (GBR).

Description

Bone spreader for dental implant surgery

[0001] The present invention relates to a bone spreader, and more particularly, to a bone spreader for implant surgery that enables even distribution of bone graft material around a defective area when reinforcing an area of ​​alveolar bone in an implant surgery site using bone graft material.

[0002] A dental implant is an artificial replacement that restores the function of a natural tooth by implanting a fixture into the alveolar bone when a natural tooth is missing, and then installing an abutment and crown on top after a certain period of osseointegration.

[0003] In typical implant procedures, when a portion of the alveolar bone is missing and the remaining bone is not sufficient to support the fixture, a procedure is added to fill the missing area with bone graft material and allow the bone graft material to function as new alveolar bone. In other words, a procedure is performed to create alveolar bone equivalent to the missing bone. This procedure is called guided bone regeneration (GBR).

[0004] In order to perform bone guided regeneration, a hole is first created in the alveolar bone using a drill, a fixture is implanted into the hole, the defective area is filled with bone graft, and then a dental membrane is covered to ensure that the filled bone graft maintains the required shape.

[0005] However, in order to perform bone induction regeneration in an area where one side of the alveolar bone where the implant is to be placed is significantly missing, the gums on the missing side must be incised, opened, filled with bone grafting material, and the gums must be sutured again. After bone induction regeneration is complete, a drill hole must be created in the alveolar bone for the fixture to be placed.

[0006] However, the conventional technique described above has the problem that the patient experiences a great deal of pain during the process of cutting and suturing the gums, and the procedure is cumbersome and takes a very long time.

[0007] The present invention has been devised to solve the problems of the above-mentioned prior art, and the purpose of the present invention is to enable bone grafting material injected during the bone induction process to be evenly distributed to the alveolar bone defect area without being lost, thereby increasing the amount of bone tissue and strengthening the bone tissue.

[0008] In particular, the purpose of the present invention is to enable bone induction regeneration to be performed without cutting and opening the gums in an area where alveolar bone is insufficient during an implant procedure.

[0009] The present invention for solving the above-mentioned problem is a bone spreader for dispersing bone graft material injected into a drilled hole in which a fixture is implanted in an alveolar bone (A) where an implant is performed, the bone spreader comprising: a connecting portion mounted on a dental handpiece and receiving a forward rotational force; a dispersing portion having a main groove formed along an outer circumference thereof in a spiral shape in the same direction as the rotational direction of the bone spreader, and an upper end integrally connected to the connecting portion so as to rotate within the alveolar bone and disperse bone graft material (bone graft) around the inner circumference of the drilled hole;

[0010] Here, the above-mentioned dispersion portion is formed so that the diameter gradually decreases from the top to the bottom.

[0011] And, the tip portion of the above-mentioned dispersion portion is rounded.

[0012] Meanwhile, in the above-mentioned distribution section, a plurality of auxiliary grooves connecting the main grooves are formed at regular intervals along the length of the distribution section in a spiral shape opposite to the rotational direction of the main spreader.

[0013] Here, the auxiliary groove is formed to be narrower in width and shallower in depth than the main groove.

[0014] The bone spreader for dental implant surgery of the present invention configured as described above has the advantage that since the main groove for dispersing the bone graft material is formed in the same direction as the rotation direction of the bone spreader, the bone graft material injected into the perforation hole is not discharged out of the perforation hole but is evenly distributed around the perforation hole, thereby being used to increase the amount of bone tissue, which can be of great help in performing guided bone regeneration (GBR).

[0015] In addition, there is an advantage in that the bone graft material can be more evenly distributed around the distribution section by forming a number of auxiliary grooves in the form of branches connecting between the main grooves in the direction opposite to the rotational direction of the main spreader.

[0016] In particular, the present invention has the effect of enabling bone induction regeneration to be performed without cutting the gums of the bound lateral portion in cases where one side of the alveolar bone is significantly missing during an implant procedure.

[0017] Fig. 1 is a drawing showing a spreader for dental implant surgery according to the present invention.

[0018] Figure 2 is a diagram showing a process of implanting a fixture into the alveolar bone using the spreader according to the present invention.

[0019] Hereinafter, an embodiment of the spreader for dental implant surgery according to the present invention will be described in detail with reference to the attached drawings.

[0020] Fig. 1 is a diagram showing a spreader for dental implant surgery according to the present invention.

[0021] And, Fig. 2 is a drawing showing a process of implanting a fixture into the alveolar bone using the spreader according to the present invention.

[0022]

[0023] The spreader for dental implant surgery according to the present invention is to form a perforation hole (A1) in alveolar bone (A) using a drill (D) for implant surgery, and then to inject bone graft material (Bone Graft) into the perforation hole (A1), and then to insert the bone graft material into the perforation hole (A1) and rotate it to disperse the bone graft material around the inside of the perforation hole (A1). The bone graft material used in the present invention may be autologous bone, allogeneic bone, xenogeneic bone, synthetic bone, etc., and its form is preferably in the form of chips, granules, or powder.

[0024]

[0025] The spreader of the present invention is composed of a connecting portion (10) and a dispersing portion (20) whose upper end is integrally connected to the connecting portion (10).

[0026]

[0027] The above connecting part (10) is dynamically connected to a dental handpiece and rotates by receiving a forward rotational force.

[0028]

[0029] The above-mentioned dispersing part (20) is inserted together with a bone graft material into a perforation hole (A1) of the alveolar bone (A) formed by the perforation operation of a drill (D) installed in a handpiece, and rotates in a forward direction (i.e. clockwise) to push the bone graft material in the perforation hole (A1) toward the wall surface of the perforation hole (A1).

[0030] To explain in more detail, the above-mentioned dispersion portion (20) is formed so that its diameter gradually decreases from the top to the bottom. That is, the overall shape of the dispersion portion (20) is a tapered shape in which the diameter at the top is large and the diameter at the bottom is small. By taking on this tapered shape, the bone graft material within the perforation hole (A1) can be pushed to the dispersion portion (20) and better dispersed laterally.

[0031] In addition, the tip portion, i.e., the lower portion of the above-mentioned dispersion portion (20), is rounded to prevent cutting force from being applied in the depth direction of the perforation hole (A1).

[0032]

[0033] In addition, a plurality of main grooves (21) in a spiral shape are formed along the outer surface of the dispersion section (20), and a plurality of auxiliary grooves (22) connecting the main grooves (21) are formed.

[0034] The above main groove (21) is formed in a positive direction from the top to the bottom of the dispersion unit (20). That is, the main groove (21) is spiraled in the same direction as the rotational direction of the spreader. In the present invention, the dispersion unit (20) rotates in a positive direction, and the main groove (21) is formed in the dispersion unit (20) in a positive direction.

[0035]

[0036] Here, compared to the drill used in general drilling, the drill rotates clockwise during general drilling. Furthermore, this drill forms a spiral groove in the reverse direction, i.e., counterclockwise. In other words, the groove direction of a general drill is formed in the opposite direction to the rotational direction of the drill. Therefore, when drilling alveolar bone, if the drill rotates clockwise, bone debris generated in the alveolar bone, i.e., bone chips, rise along the counterclockwise spiral groove and are discharged outside the drill hole.

[0037] However, since the rotation direction of the spreader, i.e., the rotation direction of the dispersing portion (20) and the formation direction of the main groove (21) are the same in the clockwise direction in the present invention, when the spreader rotates clockwise within the perforation hole (A1) of the alveolar bone (A), the bone graft material injected into the perforation hole (A1) is not discharged to the outside through the main groove (21) but is pushed by the dispersing portion (20) and dispersed to the periphery, thereby moving toward the wall surface of the perforation hole (A1). In other words, by the main groove (21) formed in the same direction as the rotation direction of the dispersing part (20), the bone graft material injected into the perforation hole (A1) does not naturally rise along the main groove (21) and be discharged outside the perforation hole (without rising resistance), but the bone graft material accumulated on the bottom surface of the perforation hole (A1) is forcibly raised along the main groove (21) by the rotation of the dispersing part (20) (with rising resistance).

[0038]

[0039] The above auxiliary grooves (22) are formed in a plurality of spaced apart manners on the outer surface of the dispersion unit (20) to connect the main grooves (21) that are separated from each other, and are formed in a spiral shape in the opposite direction (i.e. counterclockwise). That is, they are formed in a spiral shape in the same direction as the rotational direction of the dispersion unit (20). These auxiliary grooves (22) are formed to be narrower in width and shallower in depth than the main grooves (21).

[0040] In the present invention, the dispersing part (20) rotates clockwise, the main groove (21) is formed clockwise, and the auxiliary groove (22) is formed counterclockwise. Therefore, when the dispersing part (20) rotates clockwise, the bone graft materials in the perforation hole (A1) are dispersed upwardly around the dispersing part (20) by the main groove (21) and can be evenly distributed around the periphery by the auxiliary groove (22).

[0041]

[0042] The process of implanting a fixture using the bone spreader (S) of the present invention configured as described above is briefly described as follows.

[0043] First, the drill (D) is rotated in a positive direction (i.e. clockwise) to form a perforation hole (A1) in the alveolar bone (A).

[0044] Afterwards, when the perforation hole (A1) is formed, the bone graft material is injected into the perforation hole (A1), and the spreader (S) of the present invention is inserted into the perforation hole (A1) and then rotated clockwise.

[0045] When the main spreader (S) rotates clockwise, the bone graft material accumulated on the bottom surface of the perforation hole (A1) rises upward along the main groove (21) while experiencing upward resistance. At this time, the bone graft material in the main groove (21) can be evenly distributed and adhered around the perforation hole (A1) through a number of auxiliary grooves (22) formed in the form of branches along the length of the main groove (21).

[0046] Thereafter, the bone spreader (S) is removed from the perforation hole (A1) and the fixture (F) is implanted into the perforation hole (A1). With the fixture (F) implanted into the perforation hole (A1), the bone graft material evenly distributed around the perforation hole (A1) causes bone induction regeneration in the space between the perforation hole (A1) and the fixture (F), effectively strengthening the bone tissue in the defect area around the implant.

[0047] In particular, the present invention has an advantage in that, even when performing a bone-guided regeneration procedure in an area where one side of the alveolar bone where an implant is to be implanted is significantly deficient, as illustrated in FIG. 2, the area can be reinforced without cutting the gums in the deficient lateral area. In other words, the amount of bone tissue in the deficient lateral area can be increased through a perforation hole (A1) into which a fixture (F) is inserted, without cutting the gums in the area where the alveolar bone is deficient.

Claims

1. This is a bone spreader that disperses bone graft material injected into a perforation hole (A1) where a fixture is implanted in the alveolar bone (A) where an implant is performed. A connecting part (10) that is mounted on a dental handpiece and provides rotational force, A bone spreader for dental implant surgery, characterized by comprising a main groove (21) formed in a spiral shape in the same direction as the rotational direction of the above-mentioned main spreader along the outer surface, and a distributing portion (20) integrally connected at the upper end to the connecting portion (10) so as to rotate within the alveolar bone (A) and disperse the bone graft material to the inner periphery of the perforation hole (A1).

2. In claim 1, A spreader for dental implant surgery, characterized in that the above-mentioned dispersion part (20) has a diameter that gradually decreases from top to bottom.

3. In claim 1, The above-mentioned spreader (20) is a spreader for dental implant treatment characterized by a tip portion forming the lower end being rounded.

4. In claim 1, A bone spreader for dental implant treatment, characterized in that a plurality of auxiliary grooves (22) connecting the main grooves (21) are formed at regular intervals along the length direction of the bone spreader in a spiral shape opposite to the rotational direction of the bone spreader in the above-mentioned dispersion part (20).

5. In claim 4, A bone spreader for dental implant surgery, characterized in that the auxiliary groove (22) is formed to have a narrower width and shallower depth than the main groove (21).

Images