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CN-121971712-A - Injection self-curing polytetrafluoroethylene implant abutment sealing material

CN121971712ACN 121971712 ACN121971712 ACN 121971712ACN-121971712-A

Abstract

The invention discloses an injection self-curing polytetrafluoroethylene implant abutment sealing material, which comprises an abutment sealing material, wherein the abutment sealing material comprises a filling material, a sealing material, an expansion material and a chitosan powder material; the filling material consists of solid phase powder and liquid phase; the solid phase powder comprises a calcium silicate compound, disodium hydrogen phosphate and an X-ray radiation inhibitor; the sealing material is one or a mixture of two or more than two of polyvinylpyrrolidone substances, wherein the polyvinylpyrrolidone substances comprise polyvinylpyrrolidone, copolymerized polyvinylpyrrolidone and crosslinked polyvinylpyrrolidone; the injection self-curing polytetrafluoroethylene implant abutment sealing material has the advantages that when the implant and the abutment perform functions in the oral cavity, the friction coefficient between the implant and the abutment is not too low, so that the preload is improved, the stability of the abutment is improved, and the occurrence of looseness is reduced.

Inventors

  • ZHOU LEI

Assignees

  • 瀛植戴克医疗科技(苏州)有限公司

Dates

Publication Date
20260505
Application Date
20230807

Claims (10)

  1. 1. The injection self-curing polytetrafluoroethylene implant abutment sealing material comprises an abutment sealing material and is characterized in that the abutment sealing material comprises a filling material, a sealing material, an expansion material and a chitosan powder material, and the ratio of the filling material to the sealing material to the expansion material to the chitosan powder material is 1:1:2:2; The filling material consists of solid phase powder and liquid phase, wherein the solid phase powder comprises 35-85% of calcium silicate compound, 15-30% of disodium hydrogen phosphate and 0-60% of X-ray radiation inhibitor by mass percent, the sealing material comprises one of polyvinylpyrrolidone substances, two or more than two mixtures, and the ratio is 1:2, and the polyvinylpyrrolidone substances comprise polyvinylpyrrolidone, copolymerized polyvinylpyrrolidone and crosslinked polyvinylpyrrolidone; the expansion material is expansion microsphere; the chitosan powder material is prepared by mixing the following three materials according to the proportion of 1:1:1, wherein the chitosan powder is dissolved in glacial acetic acid to obtain a chitosan solution, and the beta-sodium glycerophosphate and povidone iodine are respectively dissolved in filtered and sterilized triple distilled water to obtain a beta-sodium glycerophosphate solution and a povidone iodine solution; The base station sealing material is prepared by the following method: S1, blending solid-phase powder and liquid phase according to a ratio of 1:0.3-1 to obtain blended solution A; S2, the liquid phase is a water phase taking deionized water as a matrix, and twenty percent of the total mass is fused; s3, fusing polyvinylpyrrolidone and polyvinylpyrrolidone to obtain a solution B; s4, mixing a chitosan solution and a povidone iodine solution to obtain a solution C; S5, curing the expanded microspheres and the fused sealing material, and sequentially performing compression molding, extrusion, calendaring, degreasing, stretching and puffing the expanded microspheres to obtain the expanded polytetrafluoroethylene material; S6, simultaneously carrying out ice-water bath on the blended solution A and the beta-sodium glycerophosphate solution, and then slowly dropwise adding the blended solution A and the beta-sodium glycerophosphate solution into the solution B under the condition of stirring, and fusing according to the proportion of 1:1 to obtain a solution D; And S7, adding the liquid phase and the solution C into the solution D, stirring, and adding the expanded polytetrafluoroethylene material in the stirring process to obtain the liquid polytetrafluoroethylene closed hydrogel.
  2. 2. An injected self-curing polytetrafluoroethylene implant abutment sealing material according to claim 1, wherein: in the step S5, extrusion aid is added during compression molding.
  3. 3. The injection self-curing polytetrafluoroethylene implant abutment sealing material according to claim 1, wherein the curing in the step S5 is to seal the uniformly mixed raw materials and then cure the raw materials for 18-30 hours at 35-45 ℃ to obtain the cured mixture; The degreasing in the step S5 is to remove the extrusion assisting agent at 100-180 ℃ for 2-15 min to obtain a degreased sheet; the stretching in the step S5 is performed at the temperature of 150-300 ℃ with the stretching multiple of 2-20 times.
  4. 4. The injection self-curing polytetrafluoroethylene implant abutment sealing material according to claim 1, wherein the optimal volume ratio of the chitosan solution to the beta-sodium glycerophosphate solution is 18:5.
  5. 5. The injection self-curing polytetrafluoroethylene implant abutment sealing material of claim 1, wherein the particle size of the calcium silicate compound powder is 0.1-150 μm, the calcium silicate compound accounts for 60-85% of the total mass, the X-ray radiation inhibitor accounts for 10-30% of the total mass, and the X-ray radiation inhibitor is a combination of zirconium oxide and tantalum oxide.
  6. 6. The injection self-curing polytetrafluoroethylene implant abutment sealing material of claim 1, wherein the mass percentage of the copolymer polyvinylpyrrolidone to the polyvinylpyrrolidone is 0.3-0.9:0.9-0.3.
  7. 7. The injection self-curing polytetrafluoroethylene implant abutment sealing material according to claim 1, wherein the application of the liquid polytetrafluoroethylene sealing hydrogel as a sealing agent in a dental implant system is non-therapeutic.
  8. 8. The injection self-curing polytetrafluoroethylene implant abutment sealing material as set forth in claim 1, wherein when the calcium silicate compound is tricalcium silicate, the powder particle size is 0.5-200 μm.
  9. 9. The injection self-curing polytetrafluoroethylene implant abutment sealing material of claim 1, wherein when the calcium silicate compound is a combination of tricalcium silicate and calcium silicate, the particle size of the powder is 0.2-20 μm.
  10. 10. The injection self-curing polytetrafluoroethylene implant abutment sealing material according to claim 1, wherein said liquid polytetrafluoroethylene sealing hydrogel is stored in a specific container, avoiding storage at high temperature.

Description

Injection self-curing polytetrafluoroethylene implant abutment sealing material Technical Field The invention relates to the technical field of implant abutment sealing materials, in particular to an injection self-curing polytetrafluoroethylene implant abutment sealing material. Background The oral cavity planting technology is used as an effective way for repairing the missing teeth in the world more and more, and compared with the traditional repairing way, the oral cavity planting technology has higher chewing efficiency and more attractive appearance. However, in long-term clinical practice, complications associated with implant teeth also occur sometimes, such as peri-implant inflammation, loosening and falling of implant dentures, breakage of implant abutments, etc.; Peri-implant inflammation is often associated with bacterial accumulation and proliferation around the implant. The implant and the abutment are not tightly combined together, and a 2-40 mu m micro-gap exists between the implant and the abutment. Bacteria in the oral cavity can enter the micro-gap to grow and reproduce, and toxic substances are secreted, and the micro-gap is not easy to clean. Due to long-term accumulation of bacteria and toxic substances, peri-implant tissues can be damaged, and peri-implant inflammation is formed; the sealing materials currently existing in clinic comprise sealing gel, silicone rubber O-Ring gasket and other materials, but the sealing materials in the prior art have some defects, such as poor sealing performance, poor adhesion with tissues, and incapability of being quickly cured to influence sealing effect during use, so that the sealing materials for the injection self-curing polytetrafluoroethylene implant base station are needed to solve the problems. Disclosure of Invention The invention aims to provide an injection self-curing polytetrafluoroethylene implant abutment sealing material, which comprises an abutment sealing material and is characterized in that the abutment sealing material comprises a filling material, a sealing material, an expansion material and a chitosan powder material, wherein the ratio of the filling material to the sealing material to the expansion material to the chitosan powder material is 1:1:2:2; The filling material consists of solid phase powder and liquid phase, wherein the solid phase powder comprises a calcium silicate compound, disodium hydrogen phosphate and an X-ray radiation inhibitor; According to the mass percentage, the calcium silicate compound accounts for 35-85%, the disodium hydrogen phosphate accounts for 15-30%, and the X-ray radiation inhibitor accounts for 0-60%; The liquid phase is deionized water; The sealing material is one of polyvinylpyrrolidone substances, two or a mixture of more than two of polyvinylpyrrolidone substances, and the proportion is 1:2, wherein the polyvinylpyrrolidone substances comprise polyvinylpyrrolidone, copolymerized polyvinylpyrrolidone and crosslinked polyvinylpyrrolidone; the expansion material is expansion microsphere; the chitosan powder material is prepared by mixing the following three materials according to the proportion of 1:1:1, wherein the chitosan powder is dissolved in glacial acetic acid to obtain a chitosan solution, and the beta-sodium glycerophosphate and povidone iodine are respectively dissolved in filtered and sterilized triple distilled water to obtain a beta-sodium glycerophosphate solution and a povidone iodine solution; The base station sealing material is prepared by the following method: S1, blending solid-phase powder and liquid phase according to a ratio of 1:0.3-1 to obtain blended solution A; S2, the liquid phase is a water phase taking deionized water as a matrix, and twenty percent of the total mass is fused; s3, fusing polyvinylpyrrolidone and polyvinylpyrrolidone to obtain a solution B; s4, mixing a chitosan solution and a povidone iodine solution to obtain a solution C; S5, curing the expanded microspheres and the fused sealing material, and sequentially performing compression molding, extrusion, calendaring, degreasing, stretching and puffing the expanded microspheres to obtain the expanded polytetrafluoroethylene material; S6, simultaneously carrying out ice-water bath on the blended solution A and the beta-sodium glycerophosphate solution, and then slowly dropwise adding the blended solution A and the beta-sodium glycerophosphate solution into the solution B under the condition of stirring, and fusing according to the proportion of 1:1 to obtain a solution D; And S7, adding the liquid phase and the solution C into the solution D, stirring, and adding the expanded polytetrafluoroethylene material in the stirring process to obtain the liquid polytetrafluoroethylene closed hydrogel. Preferably, in the step S5, extrusion aids are added during compression molding. Preferably, the curing in the step S5 is to seal the uniformly mixed raw materials and then cure the raw materials for 18-30 hou