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Manufacturing method for invisible orthotic device

A technology of invisible appliance and manufacturing method, applied in medical science, prosthodontics, orthodontics, etc., can solve the problems of inconvenient direct operation by orthodontists, long manufacturing cycle, limited application, etc., to reduce orthodontic costs, Low-cost, simple-to-prepare effect

Active Publication Date: 2014-12-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need to use professional technologies such as computer scanning and tomography in the manufacture of existing invisible aligners, and the need to use high-cost photocurable resin materials and rapid prototyping equipment, the manufacturing cycle is long and it is not convenient for orthodontists to directly operate. Therefore, the application of this technology is very limited

Method used

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  • Manufacturing method for invisible orthotic device
  • Manufacturing method for invisible orthotic device
  • Manufacturing method for invisible orthotic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The binder can be prepared by melting paraffin wax and ethylene-vinyl acetate copolymer or polyethylene by appropriate weight percentage, such as 50-90%: 10-50%, and then ZrO 2 or Al 2 o 3 The powder is added to the binder in the molten state to make a thermoplastic material, and the binder and ZrO 2 or Al 2 o 3 The weight ratio of the powder is 1:4-9:16. In this example, 100g of binder was obtained by melting paraffin wax and ethylene-vinyl acetate copolymer at a weight ratio of 70:30 at 120°C; 400g of ZrO 2 The powder was slowly added to 100 g of molten (120° C.) binder to obtain 500 g of thermoplastic material; it was placed in an extruder at 120° C. and extruded and sheared until a thermoplastic material with uniform composition was obtained.

[0028] Use silicone rubber to obtain the tooth model of the patient with tooth deformity; use gypsum to make the tooth model model on the tooth model model, trim the tooth model, cut off the plaster part corresponding to...

Embodiment 2

[0037] In this example, 180g of binder was obtained by melting paraffin wax and polyethylene with a weight ratio of 50:50 at 135°C; 320g of Al 2 o 3 The powder was slowly added to 180 g of molten (135° C.) binder to obtain 500 g of thermoplastic material; it was placed in an extruder at 135° C. and extruded and sheared until a thermoplastic material of uniform composition was obtained.

[0038] Use silicone rubber to obtain the tooth model of the patient with tooth deformity; use gypsum to make the tooth model model on the tooth model model, trim the tooth model, cut off the plaster part corresponding to the gingival part, and remove the gingival part The gypsum tooth male mold is placed on the tooth part of the silicone rubber female mold again, and then the thermoplastic material is filled in the silicone rubber female mold at this time to obtain a physical model of the patient's teeth and jaws composed of thermoplastic materials and plaster (see figure 2 ), figure 2 The...

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Abstract

The invention discloses a manufacturing method for an invisible orthotic device and a product thereof. The manufacturing method comprises the following steps of: obtaining a tooth female die model of a patient with malformed teeth; filling a thermoplastic material and gypsum on the gypsum to mold teeth to obtain a tooth jaw physical model; heating the thermoplastic material on the tooth part to be corrected in the tooth jaw physical model to be softened, and moving the tooth jaw physical model to a target correcting position; and cooling the thermoplastic material on the tooth part to be corrected to be hardened, and using an orthotic sheet to form a series of invisible orthotic devices by using the tooth jaw physical model as a mother mold. By the method, the invisible orthotic device which is directly operated and is low in cost and cheap in material can be obtained.

Description

technical field [0001] The invention relates to the field of tooth deformity correction appliances, in particular to a manufacturing method of an invisible appliance and a product thereof. Background technique [0002] In 1998, Align Technology, Inc. of the United States launched the transparent orthotic device (invisalign appliance), that is, the invisible aligner. Domestic Capital Medical University and Beijing Times Angel Company began research on invisible aligner technology in 2003, and began to promote and use it in 2006. [0003] Compared with traditional orthodontic techniques, invisible aligners have the advantages of safety, comfort, aesthetics, easy cleaning of teeth, and short chair-side operation time. Therefore, more and more orthodontists and patients with dental and jaw deformities are paying more and more attention. However, due to the need to use professional technologies such as computer scanning and tomography in the manufacture of existing invisible ali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/00
Inventor 肖建中程丽夏风汪洪彭周荣力
Owner HUAZHONG UNIV OF SCI & TECH
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