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Dental restoration composition as well as preparation method and application thereof

A composition, a dental technology, applied in the direction of dental preparations, dentistry, dental prosthesis, etc., can solve the problem of not being able to meet the requirements of tooth defect repair, the bending strength is difficult to meet the requirements of tooth defect repair, and cannot be used as a posterior crown bridge And other issues

Active Publication Date: 2021-03-16
LIAONING UPCERA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of the pre-cured dental restoration composition materials in the prior art can generally meet the above requirements, but the bending strength is difficult to meet the requirements for the restoration of tooth defects in clinical load-bearing parts, especially cannot be used as a posterior crown bridge restoration
[0006] Patent application CN 201080058442.1 discloses a dental composition, a milling block and a method. The material of the composition is prepared by a thermal curing process and can be used with CAD / CAM technology, but its bending strength can only reach 194.5MPa, which still cannot meet the requirements of the load-bearing parts. Requirements for restoration of tooth defects

Method used

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  • Dental restoration composition as well as preparation method and application thereof
  • Dental restoration composition as well as preparation method and application thereof
  • Dental restoration composition as well as preparation method and application thereof

Examples

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Embodiment 1

[0111] This embodiment provides a dental restorative composition, and its raw material formula is as follows: 10 parts of urethane dimethacrylate UDMA, 4 parts of triethylene glycol dimethacrylate, bisphenol A epoxy resin E-44 1 part, 34 parts of barium glass powder, 36 parts of lanthanum glass powder, 3 parts of nano-silica powder, 2 parts of nano-zirconia powder, 5 parts of silica-zirconia composite powder, 5 parts of glass flakes, 0.25 parts of benzoyl oxide, 0.2 parts of 2,6-di-tert-butyl-p-cresol, 0.1 parts of N,N-dihydroxyethyl-p-toluidine, 0.010 parts of iron oxide red, and 0.015 parts of iron oxide yellow.

[0112] The present embodiment also provides a preparation method of the above dental restorative composition, which comprises the following steps:

[0113] (1) Preparation of precursor powder: Mix all raw materials with ball stones and ball milling aid acetone according to the mass ratio of 2:4:1, then ball mill and mix the mixture. The mixing time is 1.5h, and the...

Embodiment 2

[0117] The present embodiment provides a dental restorative composition, and its raw material formula is as follows: 6 parts of urethane dimethacrylate UDMA, 4 parts of triethylene glycol dimethacrylate TEGDMA, 68 parts of barium glass powder, nanometer dioxide 4 parts of silicon powder, 3 parts of silica-zirconia composite powder, 10 parts of glass flakes, 5 parts of chopped fiber, 0.3 parts of benzoyl peroxide, 0.2 parts of 2,6-di-tert-butyl-p-cresol, 0.2 part of N,N-dihydroxyethyl-p-toluidine, 0.022 part of iron oxide red, 0.018 part of cerium praseodymium yellow, and 0.001 part of iron oxide black.

[0118] The present embodiment also provides a preparation method of the above dental restorative composition, which comprises the following steps:

[0119] (1) Preparation of precursor powder: Mix all raw materials with ball stones and ball milling aid ethanol according to the mass ratio of 1:1:1, then ball mill and mix the mixture. The mixing time is 1h, 45°C rotary evaporati...

Embodiment 3

[0123] The present embodiment provides a dental restorative composition, and its raw material formula is as follows: 6 parts of urethane dimethacrylate UDMA, 4 parts of triethylene glycol dimethacrylate TEGDMA, bisphenol A-dimethacrylate shrink 3 parts of glyceride Bis-GMA, 10 parts of lanthanum glass powder, 7 parts of nano-silica powder, 60 parts of silica-zirconia composite powder, 8 parts of glass flakes, 2 parts of chopped fiber, benzoyl peroxide 0.2 parts, 0.3 parts of 2,6-di-tert-butyl-p-cresol, 0.01 parts of iron oxide red, and 0.005 parts of cerium yellow.

[0124] The present embodiment also provides a preparation method of the above dental restorative composition, which comprises the following steps:

[0125] (1) Preparation of precursor powder: Mix all raw materials with ball stones and ball milling aid methanol according to the mass ratio of 3:5:1, then ball mill and mix the mixture. The mixing time is 1h, 50°C rotary evaporation for 2h, and then Dry at 45°C for ...

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Abstract

The invention relates to the technical field of materials, in particular to a dental restoration composition as well as a preparation method and application thereof. Raw materials of the dental restoration composition provided by the invention include a polymerizable resin matrix and a filler in the mass ratio of (5-20): (75-95); the filler comprises glass flakes; and the mass ratio of the glass flakes to the resin matrix is 1: (1-5). The dental restoration composition has extremely high mechanical strength and toughness, can be used for manufacturing a dental restoration body of a bearing part, and has an aesthetic effect close to that of natural teeth; and the dental restoration composition is cured in advance, is used for preparing the dental restoration body through computer-aided design and manufacturing, can be directly used for the oral cavity of a patient, and is suitable for a dental chair-side CAD / CAM system.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a dental restorative composition and its preparation method and application. Background technique [0002] Caries is a common oral disease that occurs widely in the world, and has been listed by the World Health Organization (WHO) as the third major disease that seriously affects human health (after cancer and cardiovascular diseases). According to the relevant research of WHO, with the development of stomatology, the dental caries missing filling index (DMFT) has declined worldwide, but it still affects the body and quality of life of 60-90% of school-age children and most adults. With the improvement of people's living standards and the development of new materials and technologies, people's requirements for dental restoration are getting higher and higher, not only for beautified appearance, but also for mechanical properties, biocompatibility, and ease of clinical operation...

Claims

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Application Information

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IPC IPC(8): A61K6/887A61K6/76A61K6/77A61K6/16A61K6/71
CPCA61K6/887A61K6/76A61K6/77A61K6/16A61K6/71C08L33/10
Inventor 仇越秀石凤吴佳航
Owner LIAONING UPCERA CO LTD
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