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Titanium casting investment material for oral cavity and application method thereof

An embedding material, oral technology, applied in pharmaceutical formulations, medical science, dentistry, etc., can solve the problems of insufficient swelling, long hardening time, high price, etc. Effect

Inactive Publication Date: 2010-10-06
BEIJING STOMATOLOGY HOSPITAL CAPITAL MEDICAL UNIV
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AI Technical Summary

Problems solved by technology

[0015] The object of the present invention is to provide an embedding material of titanium casting body for oral cavity and its application method, so as to solve the problems existing in the prior art such as large reaction with molten titanium; insufficient expansion; long hardening time and poor operability; Shrinkage deformation creates cracks; and expensive problems

Method used

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Embodiment Construction

[0023] 1. The composition and content (g) of embedding material of the present invention are:

[0024] Pure calcium aluminate cement 15

[0025] al 2 o 3 Powder (particle size 1-50um) 15

[0026] ZrO 2 Powder (particle size is 600-100 mesh) 65

[0027] Metal zirconium powder (grain size is 200-500 mesh) 5

[0028] LiCO 3 0.2

[0029] The metal zirconium powder can also be replaced by metal titanium powder, and the number of parts is 5-10.

[0030] When in use, weigh and mix the powders of all the above-mentioned ingredients evenly, and mix them evenly with the special blending liquid (aqueous solution containing 2% superplasticizer) in a weight ratio of 100:18 to obtain the casting powder of the present invention. Special investment material for titanium.

[0031] Lithium carbonate can effectively adjust the curing time of the embedding material. As mentioned above, adding 0.2% lithium carbonate, the curing time is 22.5±1.5 minutes;...

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Abstract

The invention provides a titanium casting investment material for an oral cavity and an application method thereof. A fame-proofing agent thereof adopts ZrO2 powder and Al2O3 powder; a heating expanding agent adopts metal zirconium powder or titanium powder; a bonding agent adopts pure calcium aluminate cement; a curing time modifier adopts LiCO3. The mixing liquid special for water solution with1%-5% of high performance water reducer is added to the above materials by the proportion of 100:15-25. The invention takes heat-resisting zirconia, alumina and the like as the flame-proofing agent, heat-resisting pure calcium aluminate cement as the bonding agent, metal zirconium powder or titanium powder as the heating expanding agent, lithium carbonate as the curing time modifier and water solution with high performance water reducer as the special mixing liquid of the titanium casting investment material for the first time so as to reduce the water mixing ratio and improve the compressionstrength and the heating expansibility, thereby reaching the purpose that the enough expansion volume can be generated to make up the pure titanium casting contraction under the lower temperature.

Description

technical field [0001] The invention relates to an embedding material of a titanium cast body for oral cavity, a preparation method and an application method thereof, which are used in the manufacture of oral prosthesis. Background technique [0002] my country is about to enter an aging society, and the demand for oral restorations is also increasing. Metal titanium and its alloys have light weight, good biocompatibility and biosafety, and are widely used in oral implants (roots and upper structures of implants), fixation, removable denture restorations, bases for complete dentures, Artificial joints and internal fixed splints, etc. (Dong Hongyi. The application of pure titanium as a medical material in stomatology. Shanxi Science and Technology, 2005, (l): 130-131). The melting point of titanium is 1668°C. The investment material for titanium casting is called ultra-high temperature investment material, which is mainly composed of refractory material and binder. In order...

Claims

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Application Information

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IPC IPC(8): A61K6/06A61K6/04A61K6/027A61C13/20
Inventor 张祖太丁宁
Owner BEIJING STOMATOLOGY HOSPITAL CAPITAL MEDICAL UNIV
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