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Strontium-reinforced bioactive glass ceramic

A technology of bioactive glass and ceramics, which is applied in the field of strontium-strengthened bioactive glass ceramics and dental materials, can solve the problems of inconspicuous strengthening effect and low strength, and achieve the effect of increased material strength, increased strength, and stable toughness

Inactive Publication Date: 2011-05-11
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many technical problems in bioactive glass, such as the strength is still low, even if strontium is strengthened, because strontium only exists between the glass network, neither enters the glass structure, nor enters the calcium hydroxyphosphate, the strengthening effect is not obvious

Method used

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  • Strontium-reinforced bioactive glass ceramic

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Embodiment Construction

[0016] The composition and proportion (wt%) of the strontium-enhanced bioactive glass-ceramics are:

[0017] SiO 2 30-50%,

[0018] P 2 o 5 5~25%,

[0019] B 2 o 3 0~10%,

[0020] CaO 8~45%,

[0021] Na 2 O 6~20%,

[0022] SrO 5~45%,

[0023] ZnO 1~10%,

[0024] Ag 2 O 0.05~1%,

[0025] K 2 O 0-20%.

[0026] The structure is glass ceramics, and the crystallite composition is strontium calcium hydroxyphosphate Ca 8 Sr 2 (PO 4 ) 6 (OH) 2 .

[0027] Strontium-strengthened bioactive glass-ceramics contain a silicon source as the main glass network constituent.

[0028] Strontium-reinforced bioactive glass-ceramics contain a source of phosphorus, which combines with calcium to become a source of calcium hydroxyphosphate. In addition, P 2 o 5 Has a beneficial effect on the viscosity-temperature dependence of glass, increases the operating temperature range, and is beneficial for the formation of glass ceramics.

[0029] Strontium-strengthened bio...

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Abstract

The invention discloses strontium-reinforced bioactive glass ceramic, belonging to the technical field of biomaterials. The traditional hydroxyl calcium phosphate ceramic or strontium-reinforced bioactive glass ceramic has lower strength. The strontium-reinforced bioactive glass ceramic disclosed by the invention comprises the following glass ceramic components in percentage by weight: 30-50 percent of SiO2, 5-25 percent of P2O5, 8-45 percent of CaO, 6-20 percent of Na2O, 5-45 percent of SrO, 1-10 percent of ZnO and 0.05-1 percent of Ag2O. The structural form of the strontium-reinforced bioactive glass ceramic is glass ceramic, the microcrystalline composition of the strontium-reinforced bioactive glass ceramic is Ca8Sr2(PO4)6(OH)2 and the Vickers hardness (HV) value of the strontium-reinforced bioactive glass ceramic is 509kg / mm<2>. The strontium-reinforced bioactive glass ceramic is used for toothpaste as an addictive, or can be used for repairing teeth as a dental material.

Description

technical field [0001] The invention relates to a strontium-strengthened biologically active glass-ceramic, which is used as an additive in toothpaste or used as an implant material for tooth restoration. It is a dental material and belongs to the technical field of biological materials. Background technique [0002] A bioactive material is a substance that is implanted in or combined with a living system of the body, and has the effect of replacing or restoring living tissue and its functions. Includes implant and interventional materials. Its biological activity comes from calcium hydroxyphosphate in the material, which is in a crystalline state. As a biologically active component, calcium hydroxyphosphate can be combined with biological tissues without side effects. The existing bioactive material related to the present invention is a dental material, and the strength of the material is improved by introducing strontium; the material has bactericidal and anti-inflammator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02
Inventor 吕景文王丹
Owner CHANGCHUN UNIV OF SCI & TECH
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