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Four-layer color synthetic resin block and its preparation method

A synthetic resin, the fourth technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve problems such as increased production costs, single color of dental models or temporary crowns and bridges, increased workload, etc. Achieve the effects of low production cost, high dimensional stability and excellent processing performance

Active Publication Date: 2015-12-09
SHANDONG HUGE DENTAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the existing synthetic resin blocks are monochrome, and the dental models or temporary crowns and bridges produced are of a single color, which cannot meet the needs of the market. The post-processing of the crown and bridge, however, will increase the workload and increase the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Drying of raw materials: dry the polymethyl methacrylate powder at 80°C.

[0028] (2) Color matching and kneading: prepare four layers of materials according to the ratio, mix each layer of materials evenly, knead until the dough stage, and form plastic dough materials;

[0029] (3) Hot-pressing forming: four layers of plastic dough materials are hot-pressed and combined in order in the mold, the hot-pressing temperature is 110°C, and the hot-pressing time is 10 minutes. Among them, the mold size is the thickness of the first layer: 4mm, the thickness of the second layer: 3mm, the thickness of the third layer: 3mm, the thickness of the fourth layer: 4mm, and the external dimension is Φ98.5*14mm.

[0030] (4) Heat treatment: heat-treat the hot-pressed four-layer synthetic resin block at 80° C. for 10 hours to obtain a finished four-layer synthetic resin block.

[0031] Wherein, the mass percentages of each component of the four layers of materials are respectively: ...

Embodiment 2

[0037] (1) Drying of raw materials: dry the polymethyl methacrylate powder at 85°C.

[0038] (2) Color matching and kneading: prepare four layers of materials according to the ratio, mix each layer of materials evenly, knead until the dough stage, and form plastic dough materials;

[0039] (3) Hot-pressing forming: Four layers of plastic dough materials are hot-pressed and combined in sequence in the mold, the hot-pressing temperature is 110°C, and the hot-pressing time is 15 minutes. Among them, the mold size is the thickness of the first layer: 5mm, the thickness of the second layer: 4mm, the thickness of the third layer: 4mm, the thickness of the fourth layer: 5mm, and the external dimension is Φ98.5*18mm.

[0040] (4) Heat treatment: heat-treat the hot-pressed four-layer synthetic resin block at 85° C. for 12 hours to obtain a finished four-layer synthetic resin block.

[0041] Wherein, the mass percentages of each component of the four layers of materials are respectivel...

Embodiment 3

[0047] (1) Drying of raw materials: dry the polymethyl methacrylate powder at 90°C.

[0048] (2) Color matching and kneading: prepare four layers of materials according to the ratio, mix each layer of materials evenly, knead until the dough stage, and form plastic dough materials;

[0049](3) Hot-pressing forming: four layers of plastic dough materials are hot-pressed and combined in sequence in the mold, the hot-pressing temperature is 125°C, and the hot-pressing time is 20 minutes. Among them, the mold size is the thickness of the first layer: 6mm, the thickness of the second layer: 4mm, the thickness of the third layer: 4mm, the thickness of the fourth layer: 6mm, and the external dimension is Φ98.5*20mm.

[0050] (4) Heat treatment: heat-treat the hot-pressed four-layer synthetic resin block at 90° C. for 12 hours to obtain a finished four-layer synthetic resin block.

[0051] Wherein, the mass percentages of each component of the four layers of materials are respectively...

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Abstract

The invention discloses a four-layer-color synthetic resin block and a preparation method thereof. The four-layer-color synthetic resin block is formed by four layers of structures sequentially, each layer of the structures comprise components as follows: polymethyl methacrylate, iron oxide red, iron oxide black, iron oxide yellow, titanium white, methyl methacrylate and ethylene glycol dimethacrylate. The preparation method comprises the steps as follows: polymethyl methacrylate powder is dried at a temperature of 80-90 degrees; four layers of materials are prepared in proportion respectively, and each layer of the materials are required to be mixed uniformly and kneaded until doughing time, so that a plastic dough material is formed; four layers of the plastic dough material are subjected to hot-pressing and bounded together in order in a die, the hot-pressing temperature is 110-130 DEG C, and the hot-pressing time is 10-20 min; and the four-layer-color synthetic resin block after hot-pressing is subjected to heat treatment at a temperature of 80-90 DEG C for 10-12 h, so that a four-layer-color synthetic resin block product is obtained. A dental model or temporary crown bridge, which is processed through the four-layer-color synthetic resin block, is natural and vivid in developing, and the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of synthetic resin blocks, and more specifically relates to a four-layer color synthetic resin block and a preparation method thereof. Background technique [0002] Synthetic resin blocks can be used in the laboratory to make dental models or temporary crowns and bridges by machining. Synthetic resin teeth with polymethyl methacrylate as the main component have been used clinically in the oral cavity for decades. It is a mixture of methyl methacrylate monomer and polymethyl methacrylate powder through the so-called Made by "powder / liquid polymerization process". [0003] At present, most of the existing synthetic resin blocks are monochromatic, and the dental models or temporary crowns and bridges produced are of a single color, which cannot meet the needs of the market. The post-processing of the crown and bridge, however, will increase the workload and increase the production cost. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/20B32B27/30A61C13/087
Inventor 陈国祥
Owner SHANDONG HUGE DENTAL MATERIAL CO LTD
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