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Gutta-percha composite false tooth soft lining material and preparation method thereof

A technology of eucommia glue and denture is applied in the field of denture soft lining material and its preparation, which can solve the problems of high hardness and poor flexibility.

Active Publication Date: 2015-04-29
THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of its own structure, fluororubber has poor flexibility and high hardness after curing, so it is rarely used clinically.

Method used

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  • Gutta-percha composite false tooth soft lining material and preparation method thereof
  • Gutta-percha composite false tooth soft lining material and preparation method thereof
  • Gutta-percha composite false tooth soft lining material and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment Construction

[0036] The present invention will be further described below in conjunction with embodiments.

[0037] 1. Formulation and preparation method

[0038] formula:

[0039]

[0040] Wherein, the rubber matrix is ​​composed of eucommia gum and butadiene rubber, and the mass ratio of eucommia gum and butadiene rubber is 10-90:90-10.

[0041] Preparation:

[0042] According to the stated weight ratio, add eucommia ulmoides, butadiene rubber, vulcanization activator, magnesium oxide, stearic acid, and sulfur-containing accelerator in order, mix well at 70℃-80℃, and then cool down. After it reaches room temperature, add sublimated sulfur and mix well; then, after leaving it for 22-26 hours, vulcanize at 140°C-160°C for 20-40 minutes to form, and the vulcanization pressure is 9.5MPa-10.5MPa. After the material is cured, it will be demoulded.

[0043] 2. Materials and methods

[0044] 2.1 Main materials

[0045]

[0046]

[0047] 2.2 Main equipment

[0048]

[0049]

[0050] 2.3 Extraction of Eucommia...

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Abstract

The invention discloses a gutta-percha composite false tooth soft lining material and a preparation method thereof. The gutta-percha composite false tooth soft lining material is prepared from a rubber matrix, a vulcanizing activator, magnesium oxide, stearic acid, sublimed sulfur, a sulfur-containing accelerant and an anti-aging agent, wherein the rubber matrix consists of gutta-percha and cis-polybutadiene; the mass ratio of gutta-percha to cis-polybutadiene is (10-90):(90-10). The preparation method comprises the following steps: sequentially adding gutta-percha, cis-polybutadiene, the vulcanizing activator, magnesium oxide, stearic acid, sublimed sulfur and the sulfur-containing accelerant, uniformly mixing, cooling to the normal temperature, adding sublimed sulfur, and uniformly mixing; standing for 22-26 hours, and further vulcanizing and forming; and demolding after the material is cured. The elasticity and the water absorption property of the gutta-percha composite false tooth soft lining material are approximate to those of a Silagum silicon rubber soft lining material and are remarkably lower than those of an acrylic ester soft lining material, the solubility of the gutta-percha composite false tooth soft lining material is also kept being in a relatively low level, and the gutta-percha composite false tooth soft lining material is free of toxicity for in-vitro cultured murine fibroblast cells L929, and is good in biocompatibility in primary conclusion.

Description

Technical field [0001] The invention belongs to the technical field of soft denture lining materials, and specifically relates to a novel soft denture lining material and a preparation method thereof. Background technique [0002] China has gradually entered an aging society. The alveolar ridge covering mucosa of elderly patients will become thinner as the remaining alveolar ridge is absorbed, and its buffering effect will decrease. The chewing pressure is directly transmitted to the supporting tissues, causing the oral cavity Increased irritation and pain. If a layer of soft lining material is lined on the surface of the denture tissue, it can compensate for the loss of thickness and viscoelasticity of the oral mucosa, and improve the comfort and chewing efficiency of the patient. [0003] The soft denture lining material is a layer of soft and elastic lining material between the hard base of the movable denture and the surface of the oral mucosa. It can absorb and reduce the fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/00
Inventor 冯云枝罗恒赵荣苏宁波龙慧孔祥宇朱骏飞向大雄
Owner THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV
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