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Soft metal crown and machining method thereof

A processing method and soft technology, applied in metal processing equipment, pharmaceutical formula, dental preparations, etc., can solve problems such as difficult processing, achieve high processing accuracy, reduce investment, and reduce costs

Inactive Publication Date: 2017-05-31
AIDITE (QINHUANGDAO) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with precious metal porcelain teeth and all-ceramic teeth, the cost of cobalt chromium molybdenum porcelain teeth is much lower, but there are still disadvantages that are not easy to process

Method used

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  • Soft metal crown and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A processing method for a soft metal crown, the method comprising:

[0047] (1) Calculate the weight of the cobalt-chromium-molybdenum alloy powder required to prepare the soft metal block according to the mold;

[0048] (2) Weigh the cobalt-chromium-molybdenum alloy powder, add the additive SBP styrene-butadiene-styrene to the cobalt-chromium-molybdenum alloy powder, mix and stir evenly, and obtain the mixed powder; the addition amount of SBP is the cobalt-chromium-molybdenum alloy powder 1% of powder weight;

[0049] The cobalt-chromium-molybdenum alloy powder comprises the following components by weight percentage:

[0050] Cr content is 28%, Mo content is 6.0%, O content is 0.05%, and the rest is Co content;

[0051] The particle size distribution of cobalt-chromium-molybdenum alloy powder is 400-500 mesh, accounting for 83%;

[0052] (3) Air-dry the mixed powder again, air-dry at room temperature 25°C for 30 minutes, pass the air-dried powder through a 400-mesh ...

Embodiment 2

[0056] A processing method for a soft metal crown, the method comprising:

[0057] (1) Calculate the weight of the cobalt-chromium-molybdenum alloy powder required to prepare the soft metal block according to the mold;

[0058] (2) Weigh the cobalt-chromium-molybdenum alloy powder, add additive SD-2X to the cobalt-chromium-molybdenum alloy powder and mix and stir evenly to obtain mixed powder; the addition of SD-2X is 2.5% of the weight of the cobalt-chromium-molybdenum alloy powder; SD-2X was purchased from Tengfei Cemented Carbide Forming Agent Co., Ltd., Hetang District, Zhuzhou City;

[0059] The cobalt-chromium-molybdenum alloy powder comprises the following components by weight percentage:

[0060] Cr content is 27.0%, Mo content is 6.5%, O content is 0.03, and the rest is Co content;

[0061] The particle size distribution of cobalt-chromium-molybdenum alloy powder is 400-500 mesh, accounting for 80%;

[0062] (3) Air-dry the mixed powder again, air-dry at room tempera...

Embodiment 3

[0066] A processing method for a soft metal crown, the method comprising:

[0067] (1) Calculate the weight of the cobalt-chromium-molybdenum alloy powder required to prepare the soft metal block according to the mold;

[0068] (2) Weigh the cobalt-chromium-molybdenum alloy powder, add additive PEG2000 to the cobalt-chromium-molybdenum alloy powder, mix and stir evenly, and obtain mixed powder; the addition amount of PEG2000 is 0.5% of the weight of the cobalt-chromium-molybdenum alloy powder;

[0069] The cobalt-chromium-molybdenum alloy powder comprises the following components by weight percentage:

[0070] Cr content is 29.0%, Mo content is 5.5%, O content is 0.04, and the rest is Co content;

[0071] The particle size distribution of cobalt-chromium-molybdenum alloy powder is 400-500 mesh, accounting for 85%;

[0072] (3) Air-dry the mixed powder again, air-dry at room temperature 20°C for 40 minutes, pass the air-dried powder through a 500-mesh sieve, and then granulat...

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Abstract

The invention discloses a soft metal crown and a machining method thereof. The machining method comprises the following steps that (1) the weight of cobalt-chromium-molybdenum alloy powder needed by a soft metal block is calculated; (2) the cobalt-chromium-molybdenum alloy powder is weighed, an additive is added, and uniform mixing and stirring are conducted to obtain mixed powder, wherein the cobalt-chromium-molybdenum alloy powder comprises, by weight, 27.0-29.0% of Cr, 5.5-6.5% of Mo, smaller than 0.05% of O and the balance Co; (3) the mixed powder is air-dried, and the pelleted cobalt-chromium-molybdenum alloy powder is pressed and dried to obtain the soft metal block; and (4) a dental crown is firstly designed through CAD, cut through a dental milling machine and then sintered to obtain the soft metal crown. According to the soft metal crown and the machining method thereof, the metal block is easily cut through the dental milling machine, and bur abrasion is greatly reduced; and by adoption of the soft metal crown and the machining method thereof, compared with traditional casting processes, the machining precision is higher, manpower and material resource input can be greatly reduced, the production speed is increased, the cost is lowered, and the production efficiency is improved.

Description

technical field [0001] The present disclosure generally relates to the field of tooth fabrication, and in particular relates to a soft metal crown and a processing method thereof. Background technique [0002] At present, the materials used to make dental inner crowns mainly include nickel-chromium alloy porcelain crowns, cobalt-chromium alloy porcelain crowns, titanium alloy porcelain crowns, pure titanium porcelain crowns, gold-platinum alloy porcelain crowns, etc. Nickel-chromium porcelain crowns are made of metal nickel-chromium alloy. In the complex oral environment, the metal parts exposed to the oral cavity will slowly decompose and release black oxides, which will cause local tissue staining and form black lines of the gums. Even allergies and other symptoms; pure titanium crowns have better biocompatibility, light weight, stable chemical properties, and high mechanical strength, which can be regarded as ideal metal oral restoration materials. The coefficient of the...

Claims

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Application Information

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IPC IPC(8): C22C19/07C22C1/04A61K6/04B22F1/00B22F3/04B22F3/24B22F3/10
CPCC22C1/0433C22C19/07B22F3/04B22F3/10B22F3/24B22F2998/10B22F2003/247A61K6/84B22F1/10
Inventor 李洪文王萌高运周陈莹莹
Owner AIDITE (QINHUANGDAO) TECH CO LTD
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