TWI491381B - Bone heightening device and method for implant surgery - Google Patents

Description

Bone raising device and method for implant surgery

The invention relates to a dental implant surgery device and method, and more particularly to a bone height increasing device and method for dental implant surgery.

The traditional method of treating the missing teeth is to grind the teeth on both sides of the missing tooth as the pillar of the fixed bridge to fix the denture, so that it not only destroys the enamel and structure of the healthy teeth on both sides, but also has difficulty in postoperative cleaning and chewing. Poor and other shortcomings. In recent years, artificial implants have gradually replaced traditional edentulous treatments to address the aforementioned shortcomings. The artificial implant system is located in the missing tooth. A titanium metal implant is surgically implanted into the alveolar bone of the edentulous region as the artificial root. After the implant and the alveolar bone are tightly combined, the implant is placed on the base of the implant. Top on the crown. Because the implant part is deeply implanted in the bone of the gum and tightly combined with the alveolar bone, the crown does not need to be connected with the natural tooth by the bridge, which can withstand the normal chewing force, and the function and appearance are almost comparable to the natural tooth.

The implant surgery is performed on the patient's pre-planted teeth, the gingival flap of the implant is opened, the alveolar bone is exposed, and the dental implant is used to drill the alveolar bone to form a bone cavity. The artificial root of the implant is implanted into the bone cavity, and the artificial root is buried in the bone cavity, and then gradually combined with the alveolar bone. As shown in FIG. 1A, if the condition of the alveolar bone 10 is not good, that is, when the alveolar bone is atrophied, the artificial artificial root 20 of the implant will be partially exposed, and the implanted bone can not be gradually tightly combined, which is easy to cause implanting. The operation failed. Therefore, further bone grafting is needed to increase the success rate of implant implantation.

As shown in FIG. 1B, the current bone grafting operation coats a coating film 30, such as a titanium metal mesh or a regenerated film, on the alveolar bone of the pre-bone, and the titanium metal mesh or the regenerated film 30 and the cogging. The bone powder 40 is filled between the bones. In the completion of bone powder 40 Thereafter, the gingival flap is overlaid on the titanium mesh or the regenerated film 30, and the titanium mesh or the regenerated film 30 is fixed to the alveolar bone 10 by the fixing nails 32. If the titanium metal mesh or the regenerated film 30 is not fixed, it is easily deformed or displaced by force extrusion, and even the gingival flap is opened to expose, resulting in unsatisfactory or even failure of the bone grafting result. However, it has been clinically found that because the working space inside the patient's mouth is narrow and the fixing nails 32 are extremely fine, it is difficult to suture the gingival flap with the titanium metal mesh or the regenerated film 30, or the titanium metal mesh or the reinforcing nail 32 is actually regenerated. The membrane 30 is fixed to the alveolar bone 10. Furthermore, the bone graft height that can be provided is limited only by the titanium metal mesh or the regenerated film 30 and the bone powder 40. If the patient's alveolar bone 10 is severely atrophied, the height of the desired bone graft cannot be provided.

In view of this, there is a need to provide a bone augmentation device and method for implant surgery to solve the above problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bone augmentation apparatus and method for implant surgery which, in addition to facilitating the attachment of a titanium metal mesh or a regenerative membrane to the alveolar bone, can also provide a variety of desired bone graft heights.

To achieve the above object, the bone heightening device of the present invention mainly comprises a body, a fixed root portion, and a fixing base. The fixed root outer diameter has a thread extending downward from the body and forming a step at the intersection of the body and the fixed root. The fixing seat can be locked or fastened with a positioning component to fix a coating film of a titanium metal mesh or a regenerated film. The fixed root has a predetermined length, typically about 2-4 mm. In the bone grafting operation, since the fixed root has a predetermined length and a step is formed at the intersection of the body and the fixed root, the physician does not need to measure the depth of the fixed root when the screw is fixed into the alveolar bone. Instead, the screw can be screwed into place until the step is against the alveolar bone. The body can be made into different heights in advance as needed. Therefore, when performing a bone graft operation, the physician can select a bone height increasing device of a required support height in advance to support and fix the coating film. The bone heightening device and method for implant surgery of the present invention can provide a variety of desired bone graft heights in addition to the ease of fixing the titanium metal mesh or the regeneration film to the alveolar bone.

The above and other objects, features, and advantages of the present invention will become more apparent from the accompanying drawings. In the description of the present invention, the same components are denoted by the same reference numerals and will be described.

10‧‧‧ alveolar bone

20‧‧‧Artificial roots

30‧‧‧ Cover film

32‧‧‧ fixing nails

40‧‧‧filled bone meal

50‧‧‧Bone heightening device

51‧‧‧First aperture

52‧‧‧ body

53‧‧‧Steps

54‧‧‧ fixed root

55‧‧‧Second aperture

56‧‧‧ Fixed seat

57‧‧‧Fittings

58‧‧‧Threaded hole

59‧‧‧Flange

60‧‧‧ Positioning components

61‧‧‧Fittings

62‧‧‧Positioning column

63‧‧‧Conical fasteners

64‧‧‧ head

65‧‧‧Flange

66‧‧‧ hole

67‧‧‧ third aperture

68‧‧‧Chamfering

69‧‧‧fourth aperture

72‧‧‧Conical hole

Figure 1A is a schematic cross-sectional view of the alveolar bone implanted into the artificial root.

Figure 1B is a schematic cross-sectional view of the alveolar bone implanted into the artificial root after bone repair.

Fig. 2 is a schematic cross-sectional view showing the alveolar bone using the bone augmentation device and the bone-reinforcing method of the present invention.

Fig. 3 is a schematic cross-sectional view showing the alveolar bone after using the bone augmentation device and the bone-reinforcing method of the present invention.

Fig. 4 is a schematic cross-sectional view showing the alveolar bone of the artificial root after the bone augmentation device and the bone-reinforcing method of the present invention are used.

5A-5D are cross-sectional views showing different embodiments of the bone augmentation device of the present invention.

Referring to Figures 2 and 5A, the bone raising device 50 of the present invention mainly comprises a body 52, a fixed root portion 54, and a fixing seat 56. The fixed root portion 54 has a screw with an outer diameter extending downward from the body 52, and a step portion 53 is formed at the intersection of the body 52 and the fixed root portion 54. The fixing seat 56 is located above the body 52, and can be driven to rotate by a wrench or a special tool, and the fixed root 54 of the screw is screwed into the alveolar bone 10, and the bone raising device 50 is fixed in the alveolar bone 10. . The fixing seat 56 can be locked or engaged with a positioning member 60 to fix a titanium metal mesh or a coating film 30 of the regenerated film. The fixed root 54 has a predetermined length, typically about 2-4 mm. During the bone grafting operation, since the fixed root portion 54 has a predetermined length, and the body 52 and the fixed root portion 54 meet to form a step portion 53, the physician screws the fixed root portion 54 of the bone raising device 50 with a wrench or a special tool. When the alveolar bone 10 is inside, the fixed root portion 54 can be screwed in until the step portion 53 bears against the alveolar bone 10. Therefore, the physician screwed in the fixed root 54 to the tooth In the case of the trough 10, the depth of the fixed root portion 54 is measured without a time constant to determine whether the fixed root portion 54 needs to be screwed in again, and can be screwed into place at one time. In addition to greatly reducing the operation time, this design can also reduce the chance of surgical failure due to insufficient or too much screwing of the fixed root 54.

Referring to FIG. 2 again, after the fixed root portion 54 is screwed into the alveolar bone 10, the body 52 and the fixing base 56 provide a required supporting height and a fixing portion on the alveolar bone 10 to support and fix a covering. A membrane 30, such as a titanium mesh or a regenerated membrane. After the fixed root portion 54 is screwed into the alveolar bone 10, the desired titanium metal mesh or the film of the regenerated film 30 is placed on the fixing seat 56, and then locked or fastened to the fixing seat 56 by the positioning member 60. Upper, the cover film 30 is fixed and positioned, and the gingival flap is covered on the cover film 30, and then the bone powder 40 is filled after being fixed. The bone powder 40 may be first filled, and then the desired titanium metal mesh or the regenerated film coating film 30 is placed on the fixing seat 56 and the filled bone powder 40, and then locked or fastened to the fixing seat 56 by the positioning member 60. Above, the cover film 30 is fixed and positioned, and the gingival flap is covered on the titanium metal mesh or the regeneration film 30. Because the body 52 and the fixing seat 56 can increase the height and width of the covering film 30, the filled bone powder 40 can surely cover the surface of the exposed artificial root 20 and reach the ideal bone height, and the positioning component 60 is locked or buckled. The cover film 30 is fixed and positioned on the fixing base 56, so that the gingival flap and the cover film 30 need not be sutured, or the cover film 30 is fixed to the alveolar bone 10 by the fixing nails 32. This method does solve the problem that it is difficult to suture the gingival flap with the cover film 30, or to secure the cover film 30 to the alveolar bone 10 with the fixing nails 32.

Furthermore, in accordance with the bone augmentation device 50 of the present invention, the body 52 and the mount 56 provide a desired support height on the alveolar bone 10, and the required support height is based on the patient's alveolar bone atrophy and the desired Depending on the alveolar bone height, it is usually about 1-8 mm of various support heights. According to another feature of the bone augmentation device 50 of the present invention, the body 52 can be pre-formed to different heights as desired, thereby providing the bone augmentation device 50 with a variety of different desired support heights (1-8 mm) in conjunction with the mount 56. Therefore, when performing a bone graft operation, the physician first selects the bone height increasing device 50 of the required support height for supporting and solidifying. The coating film 30 is fixed, and then the positioning member 60 is locked or fastened to the fixing seat 56 to fix and position the coating film 30. After filling the bone powder 40 between the titanium metal mesh or the regenerated film 30 and the alveolar bone, the gingival flap is covered with a titanium metal mesh or a regenerated film 30.

After the packed bone powder 40 is tightly coupled to the posterior alveolar bone 10, the coating film 30 and the bone augmentation device 50 are removed to form a posterior bone 80 of the bone graft of sufficient height, as shown in FIG. It is to be noted that if a regenerated film is used as the coating film 30, the regenerated film is absorbed, and only the bone augmentation device 50 needs to be taken out. However, if a titanium mesh is used as the cover film 30, the cover film 30 of the titanium mesh must be taken out simultaneously with the bone augmentation device 50. Please refer to Fig. 4, because the posterior alveolar bone 10 has a sufficient height, and then implant the root of the artificial implant 20 into the posterior alveolar bone 10, after the root of the artificial implant 20 and the bone graft After the alveolar bone 10 is tightly coupled, a strong implant is formed, and the crown is attached to the base of the implant. Because the implant is deeply implanted in the bone of the gum and closely combined with the alveolar bone 10, the crown does not need to be connected with the natural tooth by the bridge, which can withstand the normal chewing force, and the function and appearance are almost comparable to the natural tooth.

5A-5D are cross-sectional views showing different embodiments of the bone augmentation device of the present invention. Referring to the first embodiment of FIG. 5A, the fixing seat 56 of the bone raising device 50 has an internally threaded hole 58 for locking the externally threaded positioning post 62 of the positioning member 60 to fix and position the coating film 30. The bone augmentation device 50 is interposed between the bit member 60. A head portion 64 is formed above the positioning post 62 of the positioning member 60. The head portion 64 has a hole 66 of a specific shape, such as a hexagonal hole, for a wrench to lock the positioning post 62 of the positioning member 60 into the fixing seat 56. Threaded hole 58. Referring to the second embodiment of FIG. 5B, the fixing base 56 has an inner hole defining a first aperture 51 and a second aperture 55, and the second aperture 55 is slightly larger than the first aperture 51. The positioning component 60 has a fastening component 61 and a head 64. The rear end of the fastening component 61 forms a flange 65. The outer diameter of the flange 65 is about the same as the second aperture 55 of the mount 56. Therefore, the fastening component 61 of the positioning component 60 can be fastened into the second aperture 55 of the fixing seat 56 with its flange 65 to fix and position the coating film 30 between the bone raising device 50 and the positioning component 60. Positioning element 60 head 64 The lower edge has a chamfer 68. Therefore, after the positioning member 60 is fastened to the fixing seat 56, the fixing member 60 can be separated from the fixing seat 56 by a clamp to facilitate the removal of the coating film 30 in the future. Referring to the third embodiment of FIG. 5C, the positioning member 60 has an inner hole defining a third aperture 67 and a fourth aperture 69. The fourth aperture 69 is slightly larger than the third aperture 67. A fastening member 57 is formed on the fixing seat 56, and a flange 59 is formed at the rear end of the fastening member 57. The outer diameter of the flange 59 is approximately the same as the fourth aperture 69 of the positioning member 60. Therefore, the fourth aperture 69 of the positioning member 60 can be fastened to the end flange 59 of the fastening member 57 of the fixing seat 56 to fix and position the cover film 30 between the bone raising device 50 and the position member 60. The lower edge of the positioning member 60 has a chamfer 68. Therefore, after the positioning member 60 is fastened to the fixing base 56, the positioning member 60 can be separated from the fixing seat 56 by a clamp to facilitate the removal of the cover film 30 in the future. Referring to the fourth embodiment of FIG. 5D, the fixing base 56 has a tapered hole 72. The positioning member 60 has a tapered engaging member 63. The outer diameter of the tapered engaging member 63 corresponds to the fixing seat 56. The inner diameter of the tapered bore 72, thus forming a tight fit when the tapered snap member 63 is inserted into the tapered bore 72 of the mount 56 to secure and position the cover film 30 to the bone augmentation device 50 and the bit member 60 between. The lower edge of the head portion 64 of the positioning member 60 has a chamfer 68. Therefore, after the positioning member 60 is fastened to the fixing base 56, the fixing member 60 can be separated from the fixing seat 56 by a clamp, so as to facilitate the taking of the coating film 30 in the future. under.

According to the bone heightening device 50 and the bone grafting method of the present invention, since the fixed root portion 54 has a predetermined required length and the step portion 53 is designed, the physician does not need the time constant screwing when screwing the fixed root portion 54 to the alveolar bone 10. The depth of the root portion 54 is fixed to determine whether the fixed root portion 54 needs to be screwed in again, and can be screwed into place at one time. In addition to greatly reducing the operation time, this design can also reduce the chance of surgical failure due to insufficient or too much screwing of the fixed root 54. In addition, according to another feature of the bone augmentation device 50 of the present invention, the body 52 can be made to different heights as needed, thereby providing a bone heightening device having various different required support heights (1-8 mm) together with the fixing base 56. 50. Therefore, when the physician performs the bone grafting operation, the bone height increasing device 50 of the required supporting height is first selected to support and fix the coating film 30. The positioning element 60 is locked or fastened to the solid The cover film 30 is fixed and positioned on the seat 56, so that the gingival flap and the cover film 30 need not be sutured, or the cover film 30 is fixed to the alveolar bone 10 by the fixing nails 32. The bone heightening device and method for implant surgery of the present invention can provide a variety of desired bone graft heights in addition to the ease of fixing the titanium metal mesh or the regeneration film to the alveolar bone.

While the present invention has been disclosed by the foregoing examples, it is not intended to be construed as limiting the scope of the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ alveolar bone

30‧‧‧ Cover film

40‧‧‧filled bone meal

50‧‧‧Bone heightening device

60‧‧‧ Positioning components

Claims (5)

A bone heightening device for dental implant surgery, comprising: a body having a predetermined height; a fixed root portion having an outer diameter of the thread and extending downward from the body by a predetermined length, and forming at a junction of the body and the fixed root portion a stepped portion for screwing into the alveolar bone; a fixing seat located above the body; and a positioning component for fixing and positioning a coating film on the fixing base. The bone heightening device of claim 1, wherein the fixing seat has an internally threaded hole, and the positioning component has an external thread positioning post to lock the internal thread hole to fix and position the coating film. Between the fixing seat and the positioning component. The bone heightening device of claim 1, wherein the fixing seat has an inner hole defining a first aperture and a second aperture, the second aperture being slightly larger than the first aperture, and the positioning component has a first a fastening member and a head, the tail end of the fastening member forming a first flange, the outer diameter of the first flange is about the same as the second aperture of the fixing seat, so that the fastening component of the positioning component is first The flange is engageable in the second aperture of the fixing seat to fix and position the coating film between the fixing seat and the positioning component. The bone heightening device of claim 1, wherein the positioning component has an inner hole defining a third aperture and a fourth aperture, the fourth aperture being slightly larger than the third aperture, and the fixed seat forms a first Two fastening parts, the second buckle The rear end of the fitting member forms a second flange, and the outer diameter of the second flange is substantially the same as the fourth diameter of the positioning member, so that the fourth aperture of the positioning member can be engaged with the second end of the second fastening member of the fixing seat. The second flange is configured to fix and position the coating film between the fixing seat and the positioning member. The bone heightening device of claim 1, wherein the fixing seat has a tapered hole, and the positioning component has a tapered fastening member, and the outer diameter of the tapered fastening component corresponds to the fixing seat. The inner diameter of the tapered hole, thus forming a tight fit when the tapered fastener is inserted into the tapered bore of the mount to secure and position the cover between the mount and the positioning element.