Method for producing dental model using implant-forming set

Abstract

Provided is a method for producing a dental model using an implant-forming set, wherein an access hole blocking rod (31) and a dental abutment (1) are joined together, the dental abutment (1) and a prosthesis are joined together, and, thereafter, the access hole blocking rod (31) is cut to an appropriate length and shaping is performed.

Description

Method for manufacturing a dental model using an implant forming set 【0001】 The present invention relates to an abutment used in dental implants, and more particularly to a dental abutment that is inexpensive to remove. 【0002】 Patent No. 6245400 describes an abutment for an implant. In dental implant treatment, an abutment for connecting an implant body implanted in a patient's jawbone to an upper structure plays an important role. In a general abutment, a fixing screw is used, and a structure for reliably accommodating this screw and obtaining appropriate fixing force is required. For this reason, the fixture and abutment of a dental implant may be firmly connected by taper fitting. When maintaining the implant, the abutment may need to be removed. However, as described above, the implant and the abutment are firmly bonded, making removal difficult. And if one tries to remove the abutment forcefully, it may have an adverse effect on the soft tissue and bone tissue around the implant. 【0003】 Japanese Unexamined Patent Application Publication No. 2020-31747 describes an abutment removal tool. However, when removing the abutment using this removal tool, a rod-shaped member is pressed against the abutment, so a load is applied to the abutment and it is difficult to reuse it after maintenance. 【0004】 Patent No. 6245400 【0005】 Therefore, an object of the present invention is to provide a dental abutment that is relatively easy to remove and easy to maintain even after being attached to an implant. 【0006】 Basically, the present invention is based on the finding that it can be solved by providing a female screw portion having a valley diameter larger than the diameter of the screw head around or above the screw head accommodating portion. 【0007】This invention relates to a dental abutment 1. This dental abutment 1 has a screw head housing portion 3 and a female thread portion 5. The screw head housing portion 3 is an element for housing a screw head 11. The female thread portion 5 is provided around or on the top of the screw head housing portion 3 and is an element having a groove diameter larger than the diameter of the hole inside the screw head housing portion 3. 【0008】 By providing a female threaded portion with a groove diameter larger than the diameter of the screw head around or above the screw head housing, it is possible to provide a dental abutment that is relatively easy to remove and maintain even after being attached to an implant. 【0009】Figure 1 is a conceptual diagram illustrating a dental abutment. Figure 2 is a diagram illustrating an example of a screw head. Figure 3 is a conceptual diagram showing the removal of an abutment using an abutment remover. Figure 4 is a conceptual diagram showing the insertion of an access hole sealing rod into the hollow portion inside the abutment. Figure 4(a) is a conceptual diagram illustrating an access hole sealing rod. Figure 4(b) is a conceptual diagram (cross-sectional view) showing the connection between the access hole sealing rod and the abutment. Figure 4(c) is a conceptual diagram showing the insertion of the access hole sealing rod into the abutment through a hole provided in the prosthesis. Figure 4(d) is a conceptual diagram after adjusting the shape of the access hole sealing rod. Figure 5 is a conceptual diagram showing an example of an abutment in which the female thread portion is provided around the screw head housing portion. Figure 5(a) shows an external view of the abutment. Figure 5(b) shows an example of a cross-sectional conceptual view of the abutment. Figure 5(c) shows the insertion of the access hole sealing rod into the abutment. Figure 6 is a conceptual diagram showing the designed abutment. Figure 6(a) is an external view, and Figure 6(b) is a partial cross-sectional view. Figure 7 is a conceptual diagram showing how the prosthesis is sealed using an access hole sealing rod. Figure 7(a) shows the access hole sealing rod being inserted into the abutment. Figure 7(b) shows the access hole sealing rod protruding from the prosthesis after being inserted into the abutment. Figure 7(c) shows the access hole sealing rod being cut and then shaped. Figure 8 is a photograph that replaces a drawing, showing how an implant was formed using an abutment on a dental model manufactured with a 3D printer. Figure 9 is a photograph that replaces a drawing, showing the dental model after the implant has been formed. 【0010】Figure 1 is a conceptual diagram illustrating a dental abutment. As shown in Figure 1, this dental abutment 1 has a screw head housing portion 3 and a female thread portion 5. In the example in Figure 1, there is a relief groove portion 7. In the example in Figure 1, there is a hollow portion (access hole) that penetrates the dental abutment 1 via the screw head housing portion 3 and the female thread portion 5. This hollow portion functions as a passage for easily inserting and removing the screw. The dental abutment 1 has a hollow portion inside, and the external shape can be any known shape as appropriate. Since the dental abutment 1 is usually for dental use, its size and other specifications can be set appropriately considering the size of the tooth to which it is applied. 【0011】 A dental abutment 1 is an element used to connect an implant (artificial tooth root) to a prosthesis (crown, bridge, denture, etc.). Abutments come in various types, such as: screw-retained type (abutment that secures the prosthesis with a screw), cement-retained type (abutment that adheres to the prosthesis with cement, etc.), and custom abutments (abutments that are individually designed when a special shape is required). The material of the abutment is, for example, titanium or zirconia. Since abutments are already known, elements of known abutments may be used as appropriate. 【0012】 The screw head housing section 3 is an element for housing the screw head 11. The screw head housing section 3 can securely hold the screw head 11. 【0013】Figure 2 is a diagram illustrating an example of a screw head. The screw head 11 of a dental implant is a component typically located on the upper part of the implant (artificial tooth root). The screw head 11 is usually designed in a cylindrical or tapered shape and plays a role in stabilizing the connection between the implant body and the prosthesis (artificial tooth). Examples of materials for the screw head 11 include titanium and zirconia, which are highly biocompatible. The screw head 11 shown in Figure 2 has a cylindrical body portion 13, a cylindrical head portion 15 located on the upper part of the body portion 13 with a larger diameter than the body portion 13, a threaded portion 17 located on the lower part of the body portion 13, and a tip portion 19 located on the lower part of the threaded portion 17. In this specification, "larger diameter" may mean, for example, a diameter that is 0.1 mm or more and 5 mm or less larger, or 0.2 mm or more and 4 mm or less larger, or 0.5 mm or more and 4 mm or less larger, or 1 mm or more and 3 mm or less larger. 【0014】 The screw head housing section 3 in Figure 1 has a shape suitable for housing the screw head 11. The screw head housing section 3 has a body housing section, which is a part for housing the body portion 13 of the screw head 11 (a part having a hole with a diameter the same as or slightly larger than the diameter of the body portion 13, and a hole with a diameter smaller than the diameter of the head portion 15), and a head housing section located above it, which is a part for housing the head portion 15 (a part having a hole with a diameter the same as or slightly larger than the diameter of the head portion 15). Because of this shape, when the screw head 11 is inserted into the screw head housing section 3, it will stop in the appropriate position. 【0015】The female thread portion 5 is provided around or on the top of the screw head housing portion 3 and is an element having a groove diameter larger than the diameter of the screw head 11. In the example in Figure 1, the female thread portion 5 is provided on the top of the screw head housing portion 3. In other words, the internal cavity of the female thread portion 5 forms the female thread. The groove diameter is larger than the internal diameter of the screw head housing portion 3 (the diameter of the head housing portion). Because of this shape, it is easy to insert the screw head 11 through the female thread portion 5. Also, because the female thread portion 5 is present, it is easy to adjust or remove the dental abutment 1 by inserting a remover or adjustment rod into this portion. Furthermore, because the female thread portion 5 is present, it can also be used for sealing after the superstructure is attached. The implant body (artificial tooth root) and the abutment or screw head are precisely fixed by screwing them together. In this specification, the groove diameter being larger than the internal diameter of the screw head housing portion 3 (the diameter of the head housing portion) may be equal to the diameter of the screw head housing portion, or it may be 0.1 mm to 5 mm larger. As mentioned above, the diameter should be within a range that does not affect the housing of the screw head. 【0016】 The relief groove 7 is located at the top of the female thread portion and has an internal hole with a diameter larger than the diameter of the groove of the female thread portion. The relief groove 7 may have a female thread formed inside, which allows for smoother insertion and removal of the screw head 11 and improves work efficiency. 【0017】Figure 3 is a conceptual diagram showing how an abutment is removed using an abutment remover. The abutment remover 21 is used to remove a dental abutment 1. The abutment remover 21 includes a body portion 23 and a male threaded portion 25 provided on the body portion 23. The male threaded portion 25 has a screw shape corresponding to the female threaded portion 5. In the example of Figure 3, the abutment remover 21 has a head portion 27 at the top. As shown in Figure 3(a), when removing the abutment 1 with the abutment remover 21, the abutment remover 21 is inserted into the abutment 1 from top to bottom. After the male threaded portion 25 of the abutment remover 21 reaches the female threaded portion 5 (the internal female thread) of the abutment 1, the abutment remover 21 can be rotated to connect (screw) the abutment remover 21 and the abutment 1. Figure 3(b) is a conceptual diagram showing the abutment remover and the abutment connected. In this state, by rotating the abutment remover 21, the female thread of the abutment engages with the male thread of the abutment remover. Then, by lifting the abutment remover 21, the abutment 1 can be removed. 【0018】Figure 4 is a conceptual diagram showing the insertion of an access hole sealing rod into the hollow portion inside the abutment. The access hole sealing rod 31 is used, for example, to seal a dental abutment 1. The access hole sealing rod 31 has a male threaded portion 35 that has a shape corresponding to the female threaded portion 5 (or the female thread of the relief groove portion 7). By passing the access hole sealing rod 31 through the hollow portion (access hole) inside the abutment 1, it is expected that the inflow of resin, wax, cement, etc. can be prevented during wax-up, cement bonding, and verification index fabrication. The access hole sealing rod 31 can be made of a resin used in dentistry. An example of resin is polyacetal resin. The access hole sealing rod 31 includes a body portion 33 that has a shape that can enter the access hole, and a male threaded portion 35 provided on the body portion 33. The male threaded portion 35 has a thread shape corresponding to the female threaded portion 5. In the example of Figure 4(a), a tip portion 37 is formed at the lower part of the male threaded portion 35. 【0019】 When using the access hole sealing rod 31, the access hole sealing rod 31 is inserted into the abutment 1 from top to bottom. After the male threaded portion 35 of the access hole sealing rod 31 reaches the female threaded portion 5 (internal female thread) of the abutment 1, the access hole sealing rod 31 can be rotated to connect (screw) the access hole sealing rod 31 and the abutment 1. Figure 4(b) is a conceptual diagram (cross-sectional view) showing how the access hole sealing rod and the abutment are connected. Figure 4(c) is a conceptual diagram showing how the access hole sealing rod is inserted into the abutment through a hole provided in the prosthesis. Figure 4(d) is a conceptual diagram after the shape of the access hole sealing rod has been adjusted. In this example, the prosthesis was bonded to the abutment 1 in the oral cavity, the access hole sealing rod 31 was set, the access hole sealing rod 3 was cut to an appropriate length, and shaped. In this way, an implant can be formed using this abutment 1. 【0020】Figure 5 is a conceptual diagram showing an example of an abutment in which the female thread portion is provided around the screw head housing portion. Figure 5(a) shows an external view of the abutment. Figure 5(b) shows an example of a cross-sectional conceptual diagram of the abutment. Figure 5(c) shows the access hole sealing rod inserted into the abutment. In this example, the female thread portion 5 is provided around the screw head housing portion 3. As in this example, not the entire screw head 11 may be housed in the screw head housing portion 3, but only a part of it. In the example shown in Figure 5, the central axis of the internal cavity of the female thread portion 5 and the central axis of the internal cavity of the screw head housing portion 3 are the same or approximately the same. In the example in Figure 5, the female thread portion 5 is formed to surround the portion in which a part of the screw head 11 is housed. Also in this example, the access hole sealing rod 31 is screwed into the relief groove portion 7. 【0021】 Figure 6 is a conceptual diagram showing the designed abutment. Figure 6(a) is an external view, and Figure 6(b) is a partial cross-sectional view. This dental abutment 1 has a screw head housing portion 3, a female thread portion 5, and a relief groove portion 7. This abutment is a mechanism for separating the abutment from the implant fixture which is firmly fitted by a tapered joint. This abutment also serves as a hole sealing mechanism for fabricating a screw-fixed superstructure. This abutment has an internal thread on its inner surface. This is thicker than the screw head and is sized so as not to interfere with removal. A remover can be inserted here to remove the abutment from the fixture. This abutment can also be used for sealing after the superstructure has been attached. 【0022】 Figure 7 is a conceptual diagram showing how to seal a prosthesis using an access hole sealing rod. Figure 7(a) shows the access hole sealing rod being inserted into the abutment. Figure 7(b) shows the access hole sealing rod protruding from the prosthesis after it has been inserted into the abutment. Figure 7(c) shows the access hole sealing rod being trimmed and then shaped. 【0023】Figure 8 is a photograph, replacing a diagram, showing a dental model manufactured with a 3D printer and an implant formed using an abutment. Figure 9 is a photograph, replacing a diagram, showing the dental model after the implant has been formed. Thus, it has been shown that using the dental abutment of this invention makes it easier to form implants and remove abutments. 【0024】 The dental abutment of the present invention is widely applicable in dental implant treatment and contributes to improving the efficiency and success rate of implant treatment. 【0025】 1 Dental abutment 3 Screw head housing 5 Female thread section 7 Relief groove section 11 Screw head 13 Body section 15 Head section 17 Threaded section 19 Tip section 21 Abutment remover 23 Body section 25 Male thread section 27 Head section 31 Access hole sealing rod 33 Body section 35 Male thread section 37 Tip section

Claims

1. A method for manufacturing a dental model using an implant formation set, comprising: a screw head housing for housing a screw head, having a body housing portion which is a part for housing the body portion of the screw head, and a head housing portion located above the body housing portion which is a part for housing the head portion of the screw head, both located inside the screw head housing portion; a female screw portion provided around or above the screw head housing portion, having an internal female screw, wherein the diameter of the groove of the female screw formed inside the female screw portion is equal to or greater than the diameter of the head housing portion of the screw head housing portion; and an access hole sealing rod used to seal the dental abutment, having a body portion of the access hole sealing rod and a male screw portion provided on the body portion of the access hole sealing rod having a shape corresponding to the female screw portion, A method for manufacturing a dental model, comprising: connecting the access hole sealing rod with the dental abutment, and after connecting the dental abutment with the prosthesis, cutting the access hole sealing rod to an appropriate length and shaping it.

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