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Preparation method of functionally graded zirconia ceramic material with dental glass part permeation

A technology of zirconia ceramics and functional gradient, applied in the application field of biomedical materials, can solve the problems of poor zirconia permeability, large enamel gap, and large wear of opposing teeth, and achieve good wettability and increased sintering shrinkage Effect

Active Publication Date: 2015-07-01
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above research is dedicated to the development of full-thickness zirconia restorations. However, the wear performance of the full-thickness zirconia restorations is far from that of tooth enamel, and the wear on the opposing teeth is relatively large. The current zirconia porcelain block has a single color and can only Relying on external dyeing solution to adjust the color, and the permeability of zirconia is poor, which cannot meet the needs of clinical aesthetic restoration. The status of zirconia-porcelain double-layer restoration material is still irreplaceable

Method used

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  • Preparation method of functionally graded zirconia ceramic material with dental glass part permeation
  • Preparation method of functionally graded zirconia ceramic material with dental glass part permeation
  • Preparation method of functionally graded zirconia ceramic material with dental glass part permeation

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Embodiment 1

[0025] A preparation method of a functionally graded zirconia ceramic material infiltrated with dental glass, such as figure 1 shown, including the following steps:

[0026] (1) Preparation of permeable glass material

[0027] According to the recipe La 2 o 3 15wt%, ZrO 2 5wt%, Y 2 o 3 5wt%, SiO 2 20wt%, B 2 o 3 15wt%, BaO 15wt%, Al 2 o 3 15wt%, TiO 2 4wt%, CaO 4wt%, CeO 2 1wt%, Fe 2 o 3 1 wt%, weigh the powder of each component, put it into a ball mill jar, and use deionized water as the medium for ball milling for 6 hours, and mix well. After ball milling, pour the slurry into a porcelain plate, and dry it in an oven at 87°C for more than 24 hours until the water evaporates completely. Put the powder into a platinum crucible, place it in a muffle furnace, raise the temperature to 1300°C in an air atmosphere, keep the temperature constant for 2 hours, and cool down to room temperature with the furnace. The glass particles are ball-milled with water ac...

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Abstract

The invention discloses a preparation method of a functionally graded zirconia ceramic material of with dental glass part permeation. The preparation method comprises the specific steps: firstly preparing permeation glass with good wettability and good biology consistency, then pressing zirconia powder to green body by adopting a cold pressing molding method to be presintered to prepare a multihole presintered zirconia material, and finally permeating a glass sizing agent on the surface of multihole zirconia for dense sintering through capillary permeation technology. By utilizing the preparation method, under 1350 DEG C, glass permeation is carried out on zirconia by utilizing the capillary permeation technology, the wettable performances of permeation glass and zirconia are good, mutually blended compact structure is formed, zirconia does not have phase change, and sintering shrinkage rate is not increased significantly.

Description

technical field [0001] The invention belongs to the application field of biomedical materials, and in particular relates to a preparation method of a functionally graded zirconia ceramic material partially infiltrated by dental glass. Background technique [0002] Metal-ceramic restorative materials were once considered the "gold standard" in restorative dentistry. However, in the past ten years, metal-ceramic restoration materials have been gradually replaced by all-ceramic restoration materials with better aesthetics and biocompatibility. The current zirconia restorations mostly adopt a double-layer porcelain structure, that is, the veneering porcelain is sintered on a strong base material to achieve a beautiful and firm effect. Yttrium-stabilized tetragonal zirconia (Y-TZP) base material has high strength and toughness, can withstand high occlusal pressure, and becomes an ideal substitute material for metal-ceramic restorations. However, the bonding strength between the...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B41/86
Inventor 孙挺邵龙泉刘若宇
Owner JINAN UNIVERSITY