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A composition and denture technology, which is applied in the field of preparation of denture materials, can solve the problems of limited oral use, insufficient strength, and high brittleness, and achieve the effects of improved mechanical properties, strong transparency, and low cost
Inactive Publication Date: 2019-01-25
佛山市佛冠义齿有限公司
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Abstract
Description
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Problems solved by technology
However, the traditional glass-ceramic and alumina-based ceramic materials are not strong enough and brittle, easy to break, which limits their use in oral restorations.
Method used
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Embodiment 1
[0014] A composition for preparing a denture material, comprising in parts by weight: 18 parts of stable tetragonal zirconia, 0.8 parts of aluminum oxide, 18 parts of methyl polyacrylate monomer, 35 parts of starch, 5 parts of yttrium oxide, dispersed 1.5 parts of agent, 0.3 parts of plasticizer, 2 parts of water-soluble binder.
[0015] Wherein, the Vickers hardness of the denture material reaches 13.9 GPa; the bending strength of the denture material is 95.11 MPa; the tensile strength of the denture material is 58.25 MPa.
Embodiment 2
[0017] A composition for preparing a denture material, comprising, in parts by weight: 10 parts of stabilized tetragonal zirconia, 0.5 parts of aluminum oxide, 10 parts of methyl polyacrylate monomer, 25 parts of starch, 3 parts of yttrium oxide, dispersed 0.5 parts of agent, 0.2 parts of plasticizer, and 1.5 parts of water-soluble binder.
[0018] Wherein, the Vickers hardness of the denture material reaches 13.75 GPa; the bending strength of the denture material is 94.98 MPa; the tensile strength of the denture material is 57.36 MPa.
Embodiment 3
[0020] A composition for preparing a denture material, comprising in parts by weight: 25 parts of stable tetragonal zirconia, 1.0 part of aluminum oxide, 25 parts of methyl polyacrylate monomer, 48 parts of starch, 8 parts of yttrium oxide, dispersed 2.5 parts of agent, 0.3 parts of plasticizer, 3 parts of water-soluble binder.
[0021] Wherein, the Vickers hardness of the denture material reaches 14.25 GPa; the bending strength of the denture material is 95.32 MPa; the tensile strength of the denture material is 58.21 MPa.
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Abstract
The invention discloses a composition for preparing a denture material. The composition is prepared from the following raw materials in parts by weight: 10 to 25 parts of stable tetragonal zirconia, 0.5 to 1.0 part of alumina, 10 to 25 parts of methyl polymethacrylate, 25 to 48 parts of starch, 3 to 8 parts of yttria, 0.5 to 2.5 parts of a dispersant, 0.2 to 0.3 part of a plasticizer and 1.5 to 3parts of a water-soluble adhesive. According to the composition disclosed by the invention, the problem that traditional glass ceramic-based and alumina-based ceramic materials are easy to crack and insufficient in antibacterial performance as the traditional glass ceramic-based and alumina-based ceramic materials are insufficient in intrinsic strength and larger in brittleness can be effectivelysolved, and meanwhile, the mechanical performance of denture is effectively increased, so that the requirements of doctors and patients on the denture can be met. The stable tetragonal zirconia is added in the composition, so that the prepared denture has higher hardness; the dispersant is added in the composition, so that the prepared denture is more stable. According to the composition disclosedby the invention, parameters of the composition of the denture material are further improved, the prepared denture is excellent in properties of hardness, bending strength and tensile strength, and the application prospect is wide.
Description
technical field [0001] The invention belongs to the technical field of denture materials, and in particular relates to a composition for preparing denture materials. Background technique [0002] Dentures are what people often call "false teeth". Just like "prosthetic legs" and "prosthetic limbs" are called "prosthetic limbs", "dentures" mean teeth that perform "duties" for human beings. In medicine, it is a general term for restorations made after partial or complete loss of upper and lower teeth. Due to the ingredients of the denture materials currently on the market, the color of the dentures made will become blue, dark and yellow, which is ugly and affects the appearance. Especially the cyan and shading inside the resin tooth is the most difficult thing for the engineers who make the dentures. It is difficult to rule out the cyan and shading in the dentures. [0003] A dispersant is a surfactant that has two opposite properties of lipophilicity and hydrophilicity in t...
Claims
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Application Information
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