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US-12624219-B2 - Photocurable resin composition for surgical guide and surgical guide made therefrom and method for manufacturing same

US12624219B2US 12624219 B2US12624219 B2US 12624219B2US-12624219-B2

Abstract

One aspect of the present invention provides a photocurable resin composition for a surgical guide, which comprises 20 to 50 parts by weight of (meth)acrylate-based urethane copolymer; 40 to 70 parts by weight of a first (meth)acrylate-based monomer; 4 to 9 parts by weight of a second (meth)acrylate-based monomer; 1 to 4 parts by weight of a photoinitiator; and 0.005 to 1 parts by weight of a UV absorber, a surgical guide manufactured therefrom, and a method for manufacturing the same.

Inventors

  • Kyoung-Rok KIM
  • Bo Mi YANG
  • Giho Choi

Assignees

  • OSSTEMIMPLANT CO., LTD.

Dates

Publication Date
20260512
Application Date
20210513
Priority Date
20200602

Claims (10)

  1. 1 . A photocurable resin composition for a surgical guide, comprising: 20 to 35 parts by weight of (meth)acrylate-based urethane copolymer; 40 to 70 parts by weight of a first (meth)acrylate-based monomer; 4 to 9 parts by weight of a second (meth)acrylate-based monomer; 1 to 4 parts by weight of a photoinitiator; and greater than 0.005 parts by weight and 0.05 or less parts by weight of a UV absorber, wherein the first and second (meth)acrylate-based monomers are polyfunctional and monofunctional (meth)acrylate-based monomers, respectively.
  2. 2 . The photocurable resin composition for a surgical guide of claim 1 , wherein the photoinitiator may be one selected from a group consisting of acetophenone-based compound, a benzophenone-based compound, a triazine-based compound, a biimidazole-based compound, a thioxanthone-based compound, an oxime ester-based compound, an acylphosphine oxide-based compound, and a mixture of at least two of the above compounds.
  3. 3 . The photocurable resin composition for a surgical guide of claim 1 , wherein the UV absorber may be one selected from a group consisting of a phenyl salicylate-based absorber, a benzophenone-based absorber, and a benzotriazole-based absorber.
  4. 4 . The photocurable resin composition for a surgical guide of claim 1 , wherein the composition may be a liquid composition used for one 3D printing selected from a group consisting of a stereolithography apparatus, a digital light source processing, and a stereolithography surface curing method.
  5. 5 . A surgical guide manufactured by irradiating the photocurable resin composition for a surgical guide according to claim 1 by 3D printing.
  6. 6 . The surgical guide of claim 5 , wherein the surgical guide may be manufactured by irradiating light from a light source of 360 to 405 nm.
  7. 7 . A method for manufacturing a surgical guide, comprising: (a) preparing the photocurable resin composition for a surgical guide according to claim 1 ; (b) laminating the photocurable resin composition by 3D printing; (c) washing a product of the step (b) with a washing solution; and (d) curing a product of the step (c) with a light source of 360 to 405 nm for 10 to 30 minutes.
  8. 8 . The method of claim 7 , wherein the 3D printing in the step (b) may be performed in the light source of 360 to 405 nm.
  9. 9 . The method of claim 7 , wherein the 3D printing may be performed by one selected from a group consisting of a stereolithography apparatus, a digital light source processing, and a stereolithography surface curing method.
  10. 10 . The method of claim 7 , wherein a z-axis precision of the 3D printing may be 50 to 100 μm.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a National Stage of International Application No. PCT/KR2021/006028, filed May 13, 2021, claiming priority to Korean Patent Application No. 10-2020-0066268, filed Jun. 2, 2020, the entire disclosures of which are incorporated herein by reference. TECHNICAL FIELD The present invention relates to a photocurable resin composition for a surgical guide, a surgical guide made therefrom, and a method for manufacturing the same. BACKGROUND ART Dental implant surgery is a medical practice that restores lost dental function by implanting an artificial tooth in a missing tooth. A medical device that fixes artificial teeth to the jawbone is called a fixture, and the operator inserts the fixture through drilling and fixes it to the patient's jawbone. At this time, the planned insertion position and angle of the fixture are changed according to the skill level of the operator, and these errors adversely affect the durability of the implanted fixture and artificial teeth. In order to improve this problem, it was attempted to introduce a surgical guide, a device for guiding the operator to the insertion position and angle of the fixture according to the procedure plan. The surgical guide has a drill hole through which the fixture and drill can pass, and is a device that guides implantation surgery using the position and angle of the drill hole. The operator can increase the success rate by managing implantation errors to a minimum through this surgical guide. However, the existing surgical guide was manufactured through milling, and the milling takes a long time to manufacture and it was difficult to implement a complex shape. Accordingly, it was attempted to prepare a resin composition for a surgical guide that can be applied to a 3D printing, but in the case of a surgical guide for the 3D printing manufactured by light irradiation, there may be a problem in safety. In order to solve the above problems, there is a demand for the development of a resin composition for a surgical guide or a surgical guide that can shorten the manufacturing time of the surgical guide and implement safety and complex shape through the additive manufacturing. DETAILED DESCRIPTION OF INVENTION Technical Task The present invention aims at solving the problems of prior art as described above, and it is an object of the present invention to provide a photocurable resin composition for a surgical guide excellent in precision and photostability. Means for Solving Technical Task One aspect of the present invention provides a photocurable resin composition for a surgical guide, which comprises 20 to 50 parts by weight of (meth)acrylate-based urethane copolymer; 40 to 70 parts by weight of a first (meth)acrylate-based monomer; 4 to 9 parts by weight of a second (meth)acrylate-based monomer; 1 to 4 parts by weight of a photoinitiator; and 0.005 to 1 parts by weight of a UV absorber. According to an embodiment, the first and second (meth)acrylate-based monomers may be polyfunctional and monofunctional (meth)acrylate-based monomers, respectively. According to an embodiment, the photoinitiator may be one selected from a group consisting of acetophenone-based compound, a benzophenone-based compound, a triazine-based compound, a biimidazole-based compound, a thioxanthone-based compound, an oxime ester-based compound, an acylphosphine oxide-based compound, and a mixture of at least two of the above compounds. According to an embodiment, the UV absorber may be one selected from a group consisting of a phenyl salicylate-based absorber, a benzophenone-based absorber, and a benzotriazole-based absorber. According to an embodiment, the composition may be a liquid composition used for one 3D printing selected from a group consisting of a stereolithography apparatus, a digital light source processing, and a stereolithography surface curing method. Another aspect of the present invention provides a surgical guide manufactured by irradiating the above-mentioned photocurable resin composition for a surgical guide by 3D printing. According to an embodiment, the surgical guide may be manufactured by irradiating light from a light source of 360 to 405 nm. Another aspect of the present invention provides a method for manufacturing a surgical guide, which comprises the steps of: (a) preparing the above-mentioned photocurable resin composition for a surgical guide; (b) laminating the photocurable resin composition by 3D printing; (c) washing a product of the step (b) with a washing solution; and (d) curing a product of the step (c) with a light source of 360 to 405 nm for 10 to 30 minutes. According to an embodiment, the 3D printing in the step (b) may be performed in the light source of 360 to 405 nm. According to an embodiment, the 3D printing may be performed by one selected from a group consisting of a stereolithography apparatus, a digital light source processing, and a stereolithography surface curing method.