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Method for manufacturing a dental prosthesis

A dental prosthesis and composite technology, applied in dental prosthesis, dental prosthetics, dentures, etc., can solve the problems of low mechanical strength of composite blocks and limit the service life of dental prosthesis, and achieve the effect of high mechanical strength

Active Publication Date: 2013-09-18
迈克尔·萨顿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, composite blocks manufactured using existing methods have low mechanical strength, which limits their useful life as dental restorations

Method used

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  • Method for manufacturing a dental prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Particulate fillers are materials consisting of 80% by weight of barium aluminosilicate glass powder with a particle size in the range of 0.1 μm to 5 μm and the remainder to 100% with a particle size of 20 nm (nano) to 50 nm range of colloidal silica powders.

[0090] The granular filler is subjected to the following treatments in sequence:

[0091] · Silanization using a solution with the following composition (weight percent):

[0092] Methoxypropanol: 93.8%

[0093] Water: 5%

[0094] Acetic acid: 0.2%

[0095] Silane: 1%

[0096] • Dry at 150°C for 4h.

[0097] The resin has the following composition in weight percent:

[0098] UDMA: 80%

[0099] TEGDMA: 19.2%

[0100] Benzoyl Peroxide: 0.8%

[0101]The paste is obtained by mixing 75% by weight of particulate filler and 25% by weight of resin.

[0102] The paste obtained in this way was subsequently hardened by thermal polymerization at 100° C. for 1 h at a pressure of 500 bar.

Embodiment 2

[0104] Particulate fillers are mixtures consisting of 70% by weight of SiO with a particle size in the range 0.1 μm to 2 μm 2 Quartz powder, the balance to 100% is colloidal silica powder having a particle size in the range of 5 nm to 75 nm.

[0105] The particulate filler was subjected to the same silanization treatment as in Example 1.

[0106] The resin has the following composition by weight percent:

[0107] BIS-GMA: 40%

[0108] UDMA: 28%

[0109] TEGDMA: 30%

[0110] MEKP: 2%

[0111] A paste is obtained by mixing 80% by weight of particulate filler and 20% by weight of resin.

[0112] The paste obtained in this way was subsequently hardened by thermal polymerization at 80° C. for 2 h at a pressure of 1000 bar.

Embodiment 3

[0114] The granular filler is a mixture consisting of: 50% by weight of NaAlS with a particle size of about 10 μm 3 o 8 Sodium feldspar glass-ceramic powder, and 20% by weight of barium aluminosilicate glass powder with a particle size in the range of 0.4 μm to 1 μm, and the balance to 100% of glue with a particle size in the range of 50 nm to 100 nm SiO powder.

[0115] The granular filler was subjected to the same silanization treatment as in Example 1.

[0116] The resin has the following composition in weight percent:

[0117] EBADMA: 99.68%

[0118] Benzoyl Peroxide: 0.3%

[0119] DMPT: 0.02%

[0120] The paste is obtained by mixing 70% by weight of particulate filler and 30% by weight of resin.

[0121] The paste obtained in this way was subsequently hardened by thermal polymerization at 130° C. for 0.5 h at a pressure of 2000 bar.

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Abstract

A method for manufacturing a dental prosthesis, this method comprising the following steps: a) preparing a paste by mixing a particulate filler and a resin capable of forming a binding phase by curing; b) curing the paste prepared in step a), optionally after forming, so as to form a solid composite mass; c) optionally, cutting the solid composite mass so as to form at least one composite block; d) optionally, machining the composite block so as to form a dental prosthesis, in which method, in step b), the curing is carried out at a pressure greater than 500 bar, with a return to atmospheric pressure when all of the resin has cured.

Description

technical field [0001] The invention relates to a method of manufacturing a composite block for manufacturing a dental restoration, and to a method of manufacturing a dental restoration. The invention also relates to a composite block and a dental restoration obtained or adapted to be obtained by this method. Background technique [0002] Composite blocks are known to be produced by hardening a composite paste, ie a paste comprising a particulate filler (conventionally a particulate filler of ceramic material or glass) and a resin (conventionally a mixture of monomers). [0003] To manufacture such composite blocks, the paste is shaped and then hardened. After curing, the resin forms the binder phase or "matrix" that binds the particles together. The resulting composite block is then machined into the desired shape of the restoration, routinely using computer-aided design-computer-aided machining (CAD-CAM). [0004] The 3M Paradigm M2100 block from supplier 3M is an examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C13/20A61C5/10A61C5/77A61K6/838A61K6/884
CPCA61C13/0022A61C13/087A61C13/20A61C5/77A61C13/0006
Inventor 迈克尔·萨顿
Owner 迈克尔·萨顿