TWI580406B - Method of making abutment used in dental implant - Google Patents

Description

Method for manufacturing abutment teeth for dental implants

The present invention generally relates to a method of manufacturing abutment for a dental implant, and more particularly to a dental implant that does not use a model made from a plaster mold or a casting mold. The method of manufacturing the tooth.

This section provides background information regarding the present invention and is not a prior art that is necessary.

Figure 1 shows an illustration of an example of a dental implant. The dental implant includes an implant fixture 10 secured to the bone, a prosthesis 20, and abutment teeth 30 coupled to the artificial root 10 to support the complement 20. When the connecting portion 31 of the abutment tooth 30 is inserted into the artificial root 10, the abutment tooth 30 is fixed to the artificial root 10 by a screw 32.

Figure 2 shows an illustration of an example of a conventional method of making a fill. First, the impression material 40 is used to acquire the stamp in a state where the abutment teeth 30 are coupled to the artificial root 10. The acquired impression includes an impression of the adjacent tooth 60.

Next, the abutment tooth-like body 33 is inserted into the obtained impression body 41, and a plaster mold is cast. After the plaster is hardened, the stamp body 41 is removed to obtain the mold 50 in which the abutment tooth similar body 33 is fixed.

A missing piece 30 is designed and fabricated on the resulting model 50.

Figure 3 shows a diagram of another example of a conventional method of making a fill. Show. After placement or implantation of the artificial root, after a certain period of time, the healing abutment teeth 34 are removed to expose the artificial root 10 and the impression crown 35 is inserted therein.

Then, a stamp is obtained to obtain the stamp body 41, and an implant analog 11 having the same shape as the positioned artificial root 10 is obtained through the stamp cap 35.

Thereafter, the model 50 is made using gypsum. The implant analog 11 corresponding to the actual artificial root 10 is secured to the mold 50, and when the impression crown 35 is removed, the mold 50 can be used to design abutment or fill.

However, prior art gypsum molds 50 required design/fabrication of abutment teeth and/or design/production of missing materials, thus causing several problems: errors due to hardening and expansion of the gypsum, time required for the gypsum to harden, time to model 50 Move to the abutment and/or the position limit of the make-up factory, and the risk of damage to the model 50.

In order to implement the present invention, the contents of the best mode section below will explain that the present invention can solve the above problems.

This section provides a general summary of the disclosure, but does not fully disclose all or all of the features herein.

In accordance with an aspect of the present invention, a method of making abutment teeth for a dental implant is provided, the method comprising: first step of forming a three-dimensional (3D) image of information about an artificial root positioned in the oral cavity by scanning ;based on The 3D image forms a second step corresponding to the virtual model of the oral shape; and a third step of designing the abutment teeth for the dental implant on the virtual model.

Advantageous effects of the present invention will be described in the following mode of the best mode for carrying out the invention.

The best mode for implementing the present invention

Hereinafter, the present invention will be described in more detail with reference to the following drawings.

Figures 4 to 6 show diagrams of an example of manufacturing abutment teeth for dental implants in accordance with the present invention. First, referring to Fig. 4, the stamp body 41 is obtained by performing impression using the stamp material 40. In this case, a scanning crown cover 36 can be used. Preferably, the scanning crown cover 36 is made of a material that does not reflect light or minimizes light reflection (eg, plastic such as POM, PEEK, PC, etc.), such that the scanning crown cover 36 can be accurately identified. That is, if the scanning crown cover 36 is made of a metal material, the scanning crown cover 36 may not be easily recognized during the scanning process described later. Reference numerals 10 and 60 are the artificial root 10 and the tooth 60, respectively.

Next, in a state in which the scanning crown cover 36 is inserted into the stamp body 41, the obtained stamp body 41 is scanned through a scanner 71 connected to the computer 70 to form the scanning crown cover 36 and the impression body. A three-dimensional (3D) image of the surface information of 41 (37 in Fig. 5).

Thereafter, referring to FIG. 5, a virtual model 53 for designing the abutment teeth 30 is formed using the 3D image 37 of the computer 70. As shown in Figure 3, when used When the plaster mold designes the abutment teeth 30 on the model 50, the implant analog body 11 has been provided on the mold 50. However, in the present invention, the mold 50 using the plaster mold is not manufactured, so that the virtual implant similar body 15 corresponding to the implant analog body 11 or the actual artificial root 10 needs to be introduced into the virtual model 53.

To this end, information about the implant analog 11 is attached to the virtual model 53. The information about the implant analog 11 can be added during the process of manufacturing the virtual model 53 based on the 3D image 37, or after the virtual model 53 is created based on the 3D image 37. Here, information on the artificial root 10 is required to use the implant-like body 11 corresponding to the artificial root 10 actually placed (or inserted). Here, information about the artificial root 10 can be obtained during the placement of the artificial root 10, and if necessary, can be obtained through oral examination of the patient. Similarly, a scanning crown cover 36 corresponding to a particular artificial root 10 can be used to be recognized on a computer. A plurality of models of the virtual implant-like body 15 can be provided on the computer, and an appropriate one can be selected according to the corresponding artificial root 10 or the implant-like body 11, and can be easily applied to the virtual model 53.

Thereafter, the abutment teeth 30 are designed. At the same time, the design of the missing material 20 can be performed prior to designing the abutment teeth 30. In this case, the design of the trap 20 can advantageously have a high degree of freedom.

Finally, as shown in Fig. 6, information about the abutment teeth 30 is transmitted to the mechanical operating device 80 to cut the abutment teeth 30. Preferably, the blank which has been formed with the joint portion 31 corresponding to the shape of the artificial root 10 can be used to reduce the time for making the abutment teeth 30. The material example of the blank can be packaged Including titanium, titanium alloy, Co-Cr alloy, sintered zirconia, green stage sintered zirconia, titanium tilite alloy, Ni-Cr alloy, and the like.

Figure 7 shows an illustration of another example of abutment teeth designed for dental implants in accordance with the present invention. Unlike the example illustrated in FIG. 4, the process of forming the mold 50 does not have a process of forming the stamp 41. That is, the 3D image 37 is obtained by scanning the oral cavity through the scanner 72 connected to the computer 70. After the 3D image 37 is obtained, the subsequent processes are performed in the same manner as the examples illustrated in FIGS. 4 to 6. Reference numerals 36 and 60 are the scanning crown and teeth 60, respectively.

Figures 8 and 9 show diagrams of further examples of abutment teeth designed for dental implants in accordance with the present invention. As shown in Fig. 8, unlike the example of Fig. 4, the impression body 41 (without the scanning crown cover 36) of the scanning crown cap 36 is also scanned. Information about the shape of the scanning crown cap 36 is obtained from the 3D image obtained in this manner. A virtual model 53 containing the shape of the scanning crown cover 36 can be made as shown in Fig. 9. The shape of the scanning crown cap 36 is referred to as a virtual implant abutment tooth 39. The virtual implant abutment teeth 39 can be used to design abutment teeth 30 for use in a reference line or guide line of abutment teeth 30 to be subsequently designed. The virtual implant abutment teeth 39 may not necessarily be obtained from the impression body 41, but when the virtual implant abutment teeth 39 are obtained from the impression body 41, they may reflect the original shape of the scanning crown cap 36. Although not precise, it is advantageous to have the scanning crown cap 36 to have the shape of the final abutment tooth 30 to some extent. Again, this facilitates the use of the scanning crown cap 36 as the upper dimension of the abutment teeth 30 of the final design.

Hereinafter, various embodiments and/or applications of the present invention will be explained.

(1) A method of manufacturing abutment teeth for dental implants, comprising the fourth step of making a dental implant based on information about the abutment teeth of the design. Using CAD/CAM machines, the abutment teeth can be precisely mechanismd based on computer design information.

(2) A method of manufacturing abutment teeth for a dental implant, wherein in the third step, the virtual model comprises a virtual implant analog. According to this construction, the abutment teeth can be designed without casting the mold.

(3) A method of manufacturing abutment teeth for a dental implant, wherein, in the first step, scanning is performed in a state where the scanning crown is positioned in the artificial root.

(4) A method of manufacturing abutment teeth for a dental implant, wherein, in the first step, the 3D image is formed by scanning an impression body containing oral information about the positioning of the artificial root.

(5) A method of manufacturing abutment teeth for a dental implant, wherein, in the first step, the 3D image is formed by directly scanning an artificial tooth positioned through the oral cavity.

(6) A method of manufacturing abutment teeth for a dental implant, the method comprising: designing a process of filling a gap before the third step.

(7) A method for manufacturing abutment teeth for a dental implant, wherein, in the fourth step, the abutment tooth system for the dental implant uses a billet which has formed a joint portion to be coupled with the artificial root Made for manufacturing.

(8) A method of manufacturing abutment teeth for a dental implant, wherein in the third step, the virtual model comprises virtual implant abutment teeth.

(9) A method of manufacturing abutment teeth for a dental implant, wherein, in the third step, the virtual model comprises a virtual implant analog body and a virtual implant abutment tooth, and the virtual model is derived from Scan the 3D image of the impression of the crown cap and the 3D image obtained from the impression of the crown removed.

In one embodiment of the method of making abutment teeth for dental implants of the present invention, the abutment teeth for dental implants can be made using a virtual model.

Further, in another embodiment of the method of manufacturing abutment teeth for dental implants of the present invention, the customized abutment teeth for dental implants can be made using a virtual model.

Further, in a further embodiment of the method of manufacturing abutment tooth for a dental implant of the present invention, the abutment tooth for a dental implant can be produced without using a plaster mold.

10‧‧‧Artificial roots

11‧‧‧Institutional similarities

15‧‧‧Virtual implant resemblance

20‧‧‧Complete

30‧‧‧ abutment teeth

31‧‧‧Connecting Department

32‧‧‧ screws

33‧‧‧Abutment tooth similar

34‧‧‧Healing abutment teeth

35‧‧‧ impression crown

36‧‧‧Scan crown cover

37‧‧‧3D image

39‧‧‧Virtual implant abutment teeth

40‧‧‧ impression material

41‧‧‧ impression body

50‧‧‧ model

53‧‧‧Virtual model

60‧‧‧ teeth

70‧‧‧ computer

71‧‧‧Scanner

80‧‧‧Mechanical operating equipment

Figure 1 shows an illustration of an example of a dental implant.

Figure 2 shows an illustration of an example of a conventional method of making a fill.

Figure 3 shows an illustration of another example of a conventional method of making a fill.

Figures 4 to 6 show diagrams of an example of manufacturing abutment teeth for dental implants in accordance with the present invention.

Figure 7 shows an illustration of another example of abutment teeth designed for dental implants in accordance with the present invention.

Figures 8 and 9 show diagrams of further examples of abutment teeth designed for dental implants in accordance with the present invention.

10‧‧‧Artificial roots

20‧‧‧Complete

30‧‧‧ abutment teeth

31‧‧‧Connecting Department

32‧‧‧ screws

Claims (8)

A method for manufacturing abutment teeth for a dental implant, wherein the method comprises: forming a three-dimensional (3D) information about an oral cavity in which an artificial tooth root is positioned by scanning an impression body having an oral cavity into which a scanning crown is inserted. a first step of forming a virtual model corresponding to the shape of the oral cavity based on the 3D image, the virtual model comprising a virtual implant similar body, the 3D image having the scanning crown cover and surface information of the impression body; And a third step of designing the abutment teeth for the dental implant on the virtual model. The method of claim 1, wherein the method further comprises the fourth step of manufacturing the abutment teeth for the dental implant based on the information of the designed abutment teeth. The method of claim 1, wherein in the first step, scanning is performed in a state where the scanning crown is positioned in the artificial root. The method of claim 1, wherein in the first step, the 3D image is formed by directly scanning the positioned root of the artificial root. The method of claim 1, wherein the method comprises: designing a process of filling the toe before the third step. The method of claim 2, wherein in the fourth step, the dentition of the abutment for the dental implant has been formed and artificially The billet of the joint of the root joint is manufactured. The method of claim 1, wherein in the third step, the virtual model comprises virtual implant abutment teeth. The method of claim 1, wherein in the third step, the virtual model comprises a virtual implant abutment tooth, and the virtual model is derived from a 3D obtained from an impression body having a scanning crown cover The image, as well as the 3D image obtained from the impression of the crown removed.