Zirconia oral dedicated embedded material and casting mold manufacture method thereof

A special bag, zirconia technology, applied in the direction of casting mold, casting mold composition, casting molding equipment, etc., can solve the problems of poor precision of dentures, different process conditions, unsatisfactory casting quality and mechanical properties, etc., to achieve small thickness, compensation The effect of solidification and shrinkage

Inactive Publication Date: 2011-04-13
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic investment material reacts seriously with titanium, the casting quality and mechanical properties are not ideal, and the accuracy of the cast denture is poor, which cannot meet the needs of clinical fixed denture restoration. The imported investment material is expensive and the process conditions are different, so it is difficult to popularize and apply

Method used

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  • Zirconia oral dedicated embedded material and casting mold manufacture method thereof
  • Zirconia oral dedicated embedded material and casting mold manufacture method thereof
  • Zirconia oral dedicated embedded material and casting mold manufacture method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: The manufacturing method of the zirconia-based oral cavity casting titanium investment mold of the present embodiment is carried out according to the following steps: 1. Weigh the ZrO2 according to the above investment components. 2 100g, MgO 19g, NH 4 h 2 PO 4 14g, Al 2 o 3 35g, H 3 BO 3 2.1g, stir and dry mix evenly; then mix the material powder and water in proportion, wherein the weight ratio of investment powder and water is 100:20. ② Manually stir the water-powder mixture obtained in step ① for 15-20 seconds, then vacuum-stir for 50-60 seconds on a JNZJ-1 vacuum stirring oscillator, and the vacuum degree is less than -0.2MPa. ③ Immediately embed the above mixed mixture, and demould after solidification, and the demoulding time is 0.1 hour after casting. ④ Dry the mold after curing and demoulding in the air for 1 hour. ⑤ After natural air-drying, put the mold into the furnace and bake at a heating rate of 5°C / min to 270°C for 30 minutes; when...

Embodiment 2

[0020] Example 2: The manufacturing method of the zirconia-based oral cavity casting titanium investment mold of the present embodiment is carried out according to the following steps: 1. Weigh the ZrO2 according to the above-mentioned investment composition. 2 140g, MgO 19g, NH 4 h 2 PO 414g, Al 2 o 3 35g, H 3 BO 3 2.1g, stir and dry mix evenly; then mix the material powder and water in proportion, wherein the weight ratio of investment powder and water is 100:20. ② Manually stir the water-powder mixture obtained in step ① for 15-20 seconds, then vacuum-stir for 50-60 seconds on a JNZJ-1 vacuum stirring oscillator, and the vacuum degree is less than -0.2MPa. ③ Immediately embed the above mixed mixture, and demould after solidification, and the demoulding time is 0.1 hour after casting. ④ Dry the mold after curing and demoulding in the air for 1 hour. ⑤ After natural air-drying, put the mold into the furnace and bake at a heating rate of 5°C / min to 270°C for 30 minu...

Embodiment 3

[0022] Example 3: The manufacturing method of the zirconia-based titanium oral cavity casting investment mold of the present embodiment is carried out according to the following steps: 1. Weigh the ZrO2 according to the above-mentioned investment composition. 2 150g, MgO19g, NH 4 h 2 PO 4 14g, Al 2 o 3 35g, H 3 BO 3 2.1g, stir and dry mix evenly; then mix the material powder and water in proportion, wherein the weight ratio of investment powder and water is 100:20. ② Manually stir the water-powder mixture obtained in step ① for 15-20 seconds, then vacuum-stir for 50-60 seconds on a JNZJ-1 vacuum stirring oscillator, and the vacuum degree is less than -0.2MPa. ③ Immediately embed the above mixed mixture, and demould after solidification, and the demoulding time is 0.1 hour after casting. ④ Dry the mold after curing and demoulding in the air for 1 hour. ⑤ After natural air-drying, put the mold into the furnace and bake at a heating rate of 5°C / min to 270°C for 30 minutes...

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Abstract

The invention discloses a zirconia oral dedicated embedded material and a casting mold manufacture method thereof, belonging to the filed of oral titanium casting embedding materials. The zirconia oral dedicated embedded material comprises the following components by weight ratio: ZrO2: MgO: NH4H2PO4: Al2O3: H3BO3 = (100-150): (10-30): (10-20): (20-50): (1.5-3.9). The casting mold manufacture method comprises the following steps: (1) weighting powder, stirring and dryly blending evenly, and proportionally mixing; (2) manually stirring and then carrying out vacuum stirring; (3) instantly embedding or casting a fire-resistant mold, solidifying and demolding, and carrying out naturally air drying; (4) baking at low temperature; (5) baking at high temperature; (6) cooling down with a furnace, and discharging; and (7) carrying out cold mold casting. The oral dedicated embedded material disclosed in the invention not only can be used for casting dedicated cast molds by pure titanium, but also can be used for fine casting in which titanium is taken as a raw material, and has the advantages of simple process, low cost, good demolding performance, high quality of casting surfaces and high accuracy.

Description

technical field [0001] The invention belongs to the field of cast titanium embedding materials for oral cavity, and in particular relates to a zirconia-based embedding material for oral cavity and a casting mold manufacturing method thereof. Background technique [0002] Titanium and titanium alloys are favored by dentists for their outstanding advantages such as good corrosion resistance, outstanding biocompatibility, unique mechanical properties and physical and chemical properties, and are an ideal new oral restoration material. The medical community calls it space-age oral material. With the successful development and commercialization of dental titanium casting machines, various restorations such as titanium crowns and bridges, denture brackets, titanium-based porcelain and plastic-fried crowns and bridges have been produced in Japan, the United States, Germany, and the United States. It has been applied clinically in Switzerland and other countries, showing good appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00B22C9/00A61C13/20
Inventor 相志磊苏香林陈子勇苏学宽
Owner BEIJING UNIV OF TECH
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