DENTAL BULK BLOCK FOR MACHINING AND METHOD FOR MANUFACTURING SAME
A dental bulk block for machining, which is a glass-ceramic block including a crystalline phase in an amorphous glass matrix. The bulk block is a functionally graded material including crystalline phases where among the crystalline phases, a main crystalline phase is lithium disilicate, and an additional crystalline phase includes quartz, lithium phosphate, and at least one selected from among cristobalite and tridymite, in which the main crystalline phase has a size gradient with respect to a depth, and no interface is present at a point where a size gradient value of the main crystalline phase changes. Thus, the bulk block is useful in manufacturing artificial tooth prostheses that are similar to natural teeth and thus can not only reduce the time and processes for manufacturing artificial tooth prostheses but also obtain the effect of enhancing structural stability in terms of force distribution based on functionally graded mechanical characteristics..
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Patent| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Europäisches Patentamt - (2024) vom: 21. März Zur Gesamtaufnahme - year:2024 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
LIM HYUNG BONG [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| Anmerkungen: |
Source: www.epo.org (no modifications made), First posted: 2024-03-21, Last update posted on www.tib.eu: 2024-05-08, Last updated: 2024-05-10 |
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| Patentnummer: |
US2024090986 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
EPA003157717 |
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| 520 | |a A dental bulk block for machining, which is a glass-ceramic block including a crystalline phase in an amorphous glass matrix. The bulk block is a functionally graded material including crystalline phases where among the crystalline phases, a main crystalline phase is lithium disilicate, and an additional crystalline phase includes quartz, lithium phosphate, and at least one selected from among cristobalite and tridymite, in which the main crystalline phase has a size gradient with respect to a depth, and no interface is present at a point where a size gradient value of the main crystalline phase changes. Thus, the bulk block is useful in manufacturing artificial tooth prostheses that are similar to natural teeth and thus can not only reduce the time and processes for manufacturing artificial tooth prostheses but also obtain the effect of enhancing structural stability in terms of force distribution based on functionally graded mechanical characteristics. | ||
| 650 | 4 | |a C03B: Manufacture or shaping of glass, or of mineral or slag wool; supplementary processes in the manufacture or shaping of glass, or of mineral or slag wool (surface treatment c03c) | |
| 650 | 4 | |a A61K: Preparations for medical, dental, or toilet purposes (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms a61j0003000000;chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles a61l; soap compositions c11d) | |
| 650 | 4 | |a fer | |
| 650 | 4 | |a A61C: Dentistry; apparatus or methods for oral or dental hygiene (non-driven toothbrushes a46b;preparations for dentistry a61k0006000000; preparations for cleaning the teeth or mouth a61k0008000000, a61q0011000000) | |
| 650 | 4 | |a che | |
| 650 | 4 | |a med | |
| 650 | 4 | |a C03C: Chemical composition of glasses, glazes or vitreous enamels; surface treatment of glass; surface treatment of fibres or filaments made from glass, minerals or slags; joining glass to glass or other materials | |
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| 650 | 4 | |a 615 | |
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