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CN-121985923-A - Method for manufacturing dental implant prosthesis by using digital library

CN121985923ACN 121985923 ACN121985923 ACN 121985923ACN-121985923-A

Abstract

The present invention relates to a method for manufacturing a dental implant prosthesis using a digital library including three-dimensional profile information of a pre-manufactured abutment related to pre-manufactured abutments having various specifications, which includes a stub having a cutting surface and/or a cutting groove formed to extend at an outer periphery thereof when designing the digital library including the three-dimensional profile information of the pre-manufactured abutment according to an embodiment of the present invention, the digital library including the three-dimensional profile information of the abutment is designed regardless of the cutting surface and/or the cutting groove, whereby early contact between the cutting surface and/or the cutting groove periphery of the abutment and the stub is prevented even if an error occurs in manufacturing the prosthesis by a dental technician.

Inventors

  • ZHANG QIANSHI

Assignees

  • 伊诺顿株式会社

Dates

Publication Date
20260505
Application Date
20240724
Priority Date
20231117

Claims (10)

  1. 1. A method for manufacturing a dental implant prosthesis by using a digital library is characterized in that, The method comprises the following steps: designing a digital library including three-dimensional shape information of a pre-fabricated base including a stub peripherally extending to form at least one of a cut surface or a cut groove, and The prosthesis is manufactured using a designed digital library, In the step of designing the digital library, when the three-dimensional shape information of the prefabricated base is designed, it is designed to be centered at an intersection point at which the axis of the root pile intersects with a perpendicular line to the axis of the root pile, such that a distance between the intersection point and an outer peripheral extension of the root pile is identical along a circumference of the root pile on the same plane.
  2. 2. A method for manufacturing a dental implant prosthesis by using a digital library is characterized in that, The method comprises the following steps: designing a digital library including three-dimensional shape information of a pre-fabricated base including a stub peripherally extending to form at least one of a cut surface or a cut groove, and The prosthesis is manufactured using a designed digital library, In the step of designing the digital library, when designing three-dimensional shape information of the pre-cast abutment, the three-dimensional shape of the root stub is designed in consideration of the thickness or volume of the part formed between the prosthesis and the pre-cast abutment.
  3. 3. A method for manufacturing a dental implant prosthesis by using a digital library is characterized in that, The method comprises the following steps: Designing a digital library including three-dimensional shape information of a prefabricated base station, and The prosthesis is manufactured using a designed digital library, In the step of designing the digital library, when designing three-dimensional shape information of the pre-cast abutment, the three-dimensional shape of the root stub is designed in consideration of the thickness or volume of the part formed between the prosthesis and the pre-cast abutment.
  4. 4. A dental implant prosthesis manufacturing method using a digital library according to any one of claims 1 to 3, wherein in the step of designing the digital library, the three-dimensional shape of the root post is designed in a conical shape when the three-dimensional shape information of the pre-fabricated abutment is designed.
  5. 5. A dental implant prosthesis manufacturing method using a digital library according to claim 2, wherein the component is an elastomer.
  6. 6. A dental implant prosthesis manufacturing method using a digital library according to any one of claims 1 to 3, wherein in the step of designing the digital library, the design is performed using dental computer-aided design/computer-aided manufacturing when designing three-dimensional profile information of the prefabricated base.
  7. 7. The dental implant prosthesis manufacturing method using a digital library according to claim 1, wherein in the step of designing the digital library, when the three-dimensional shape information of the pre-cast abutment is designed such that the distance between the intersection point and the outer circumferential extension of the root post is the same along the circumference of the root post on the same plane, the three-dimensional shape information of the pre-cast abutment is designed by making the distance between the outer circumferential extension of the root post in which the cutting surface or the cutting groove is formed in the intersection point coincide with the distance between the outer circumferential extension of the root post in which the cutting surface or the cutting groove is not formed in the intersection point.
  8. 8. A dental implant prosthesis manufacturing method using a digital library according to any one of claims 1 to 3, wherein the root stub is formed in a tapered structure with a diameter gradually decreasing toward the upper part.
  9. 9. A dental implant prosthesis manufacturing method using a digital library according to any one of claims 1 to 3, wherein the pre-fabricated abutment is formed as a screw-integrated or screw-separated structure.
  10. 10. A method of manufacturing a dental implant prosthesis using a digital library according to any one of claims 1 to 3, wherein the prosthesis is a single crown or a bridge crown.

Description

Method for manufacturing dental implant prosthesis by using digital library Technical Field The present invention relates to a dental implant prosthesis manufacturing method, and more particularly, to a dental implant prosthesis manufacturing method using a digital library, which includes three-dimensional shape information of a prefabricated base station related to prefabricated base stations having various specifications. Background In general, a dental implant system includes an implant (fixture) implanted into an alveolar bone, a abutment (abutment) fastened to the implant and receiving a pressure corresponding to an biting force applied when chewing, and a crown (crown/bridge) repairing an upper portion of the abutment, i.e., a root post (post), to restore an aesthetic appearance similar to that of a natural tooth. Fig. 1 and 2 are views showing a general dental abutment, fig. 1 is a view showing a structure in which a cutting surface is formed on a root pile, and fig. 2 is a view showing a structure in which a cutting groove is formed on a root pile. As shown in fig. 1 and 2, the abutments 10, 20 include root posts 11, 21 that are bonded (molded) inside a prosthesis (not shown). One or more cutting surfaces 11a or cutting grooves 21a are formed in the root piles 11, 21 along the longitudinal direction (vertical direction) of the base 10, 20. Such a cut surface 11a or a cut groove 21a is used to prevent the rotation of the prosthesis about the root posts 11, 21 in a state where the root posts 11, 21 are coupled to the prosthesis. Methods of manufacturing the prosthesis include a simulation manufacturing method of taking a mold in an oral cavity using a mold material, molding using wax, and casting and adding porcelain, and a digital manufacturing method of manufacturing by scanning an oral cavity or a prefabricated tooth shape. This method corresponds to a one-time manufacturing method. In contrast, there is also a method of manufacturing using a dental digital library. The manufacturing method using the digital library for dentistry has excellent accuracy compared to analog and digital manufacturing methods. However, when a dental digital library is used to manufacture a prosthesis, various problems may be caused in the case of designing the digital library in a state that a cut surface or a cut groove of a root post formed at a base is reflected in the digital library. This problem is particularly serious when manufacturing a bridge crown in a prosthesis, which does not cause a problem in the case where the central axes of root posts of a base are formed in parallel, but in the case of non-parallelism, the cut surfaces or cut grooves formed in the root posts are also not parallel and become curved. (Prior art literature) (Patent literature) Patent document 1 KR 10-1632378B 1, 15/06/2016 Patent document 2 KR 10-1726706B 1,2017, 04, 07 Patent document 3 KR 10-1632373B 1, 15/06/2016 Patent document 4 KR 10-2385390B 1,2022, 04/06 Disclosure of Invention (Problem to be solved by the invention) Typically, the root pile of the abutment is formed in a tapered structure (see fig. 1) with a diameter gradually decreasing upward. In this case, the degree of taper of the cut surface or the cut groove formed in the root pile is smaller than that of the root pile. There are cases where the root pile is almost parallel to the center axis of the root pile (center axis dividing the root pile into right and left). Thus, when manufacturing the prosthesis during the machining, in case of errors, the prosthesis is not uniformly and tightly attached to the outer surface of the root pile, but early contact is achieved in the form of point contact (point contact) or line contact (line contact) at a specific location. That is, during the machining, an early contact site such as a point contact or a line contact occurs between the prosthesis and the abutment due to an error. As described above, when the prosthesis is fixed to the abutment, the early contact portion mostly occurs at the periphery of the cut surface or cut groove of the root pile. In this case, when the central axis of the root pile is slightly curved, the problem can be solved to some extent by deleting (removing) a part of the inner surface of the receiving portion of the prosthesis fitted with the root pile during the processing. However, when the bending degree of the center axis of the root pile is large, a considerable portion needs to be deleted in order to solve this problem, and thus the suitability of the work may be impaired. The prosthesis manufactured in this way is not accurately bonded to the abutment. In particular, in an implant system in which a prosthesis is fixed to a base by using a separate screw-type fixing member (fixing screw) without using an adhesive, the base cannot be removed, and thus, there is a substantial possibility that a problem of a bridge crown cannot be obtained. Accordingly, the present invention has been made to solve the