CN106137424A - A kind of defect of dentition zoned pressure die individual tray designing and manufacturing method - Google Patents

Abstract

The present invention relates to a kind of defect of dentition zoned pressure die individual tray designing and manufacturing method, including producing preliminary impression, irrigate plaster model；Scanning preliminary impression or scanning plaster model；Scan data is called in reverse engineering software, extracts three dimensional point cloud；Fill and lead up undercut district；It is uniformly amplified 1-3mm along data surface normal direction by edentulous region data, and residue denture data uniformly amplify the 0.5～1mm virtual tray main body part of acquisition；Along virtual pallet inner surface normal direction by its uniform thickened 1～3mm；Tray surface in residue denture corresponding region is reserved modeling composition and is overflowed and fixed hole；The data boundary of virtual tray main body part and handle is merged, by 3D printing device, makes die individual tray.The present invention can be for different final impression material characteristicses, and accurate quantification controls edentulous region alveolar ridge and the residue denture pressure when producing final impression, substitutes traditional-handwork and makes, and be conducive to raising removable partial denture designs and produces degree of accuracy.

Description

A kind of defect of dentition zoned pressure die individual tray designing and manufacturing method

Technical field

The present invention relates to a kind of making repairing impression tray, be specifically related to a kind of defect of dentition and divide District's pressure die individual tray designing and manufacturing method.

Background technology

When single jaw disappearance 1 to 1 natural teeth of residue, referred to as defect of dentition.Defect of dentition Patient's routine uses removable partial denture to carry out repairing and treating.Owing to removable partial denture is being chewed The amount sunk after middle denture and edentulous region alveolar ridge stress is different, and the most optimal denture lacks Damaging impression technique is zoned pressure impression technique.Apply this technology, defect of dentition list jaw can be obtained Actual configuration of surface in actual masticatory movement, after edentulous region alveolar ridge and the sinking of tooth stress Feature, the removable partial denture made accordingly can realize the most rational stress distribution, improves one The fitness of chi, reduces the stress to abutment and concentrates damage.The most clinical conventional torr Dish includes ready-made tray red cream individual tray method, self-solidifying or photosensitive resin individual tray method two kinds, Main pluses and minuses are as follows:

1, ready-made tray red cream individual tray method: more convenient, it is not necessary to perfusion studies plaster model, Clinician can have been operated by simple hand.But low precision, produces final impression success rate low, Easily affect impression accuracy.

2, self-solidifying or photosensitive resin sheet individual tray method: various clinical making requirement can be realized, But preliminary impression must be recorded as plaster model, and need special equipment, material piece, cost Higher.And need special messenger to spend 1-2 hour can to complete, efficiency is low, it is impossible in clinic It is done directly application.

3, owing to using manual range estimation operation, above two method is all difficult to final impression material The local of material thickness and overall homogeneity, make effect relatively big, indirectly by operator's experience influence Affect impression making precision.

Summary of the invention

It is an object of the invention to provide a kind of defect of dentition zoned pressure die individual tray design Manufacture method, replaces with the defect of dentition zoned pressure die individual tray of Design of digital and making Make for traditional-handwork, it is achieved clinical oral is increasingly automated, high accuracy makes defect of dentition and divides The target of district's pressure die individual tray, can be effectively improved clinical defect of dentition at short notice and divide District's pressure die individual tray designs and produces level, improves diagnosis and treatment efficiency and quality.

In order to achieve the above object, the present invention has a following technical scheme:

A kind of defect of dentition zoned pressure die individual tray designing and manufacturing method of the present invention, bag Include following steps:

1) produce defect of dentition list jaw preliminary impression with ready-made tray and alginate, Gypsum Fibrosum can be irrigated Model；

2) directly scan preliminary impression or scanning plaster model with dentognathic model spatial digitizer, obtain Take denture preliminary impression or the three-dimensional data of plaster model tissue surface form；

3) scan data is called in reverse engineering software, extract mucosa fold line in scan data For edge line, intercept internal cloud data；

4) corresponding step 3) the internal cloud data of fold line of edentulous jaw preliminary impression, choose One | tooth close | gum to enter a direction, fill and lead up all undercut districts in the direction, it is thus achieved that without undercut Surface cloud data；

5) for 4) in surface cloud data, by edentulous region data along data surface normal direction It uniformly amplifies 1-3mm, and residue denture data uniformly amplify the 0.5～1mm virtual torr of acquisition Disc main body part；

6) along virtual pallet inner surface normal direction by its uniform thickened 1～3mm, in residue denture pair The tray surface answering region is reserved modeling composition and is overflowed and fixed hole；

7) virtual for upper jaw tray handle being designed as straight rectangle, the virtual tray handle of lower jaw sets It is calculated as the handle that end is triangle；

8) data boundary of virtual tray main body part and handle is merged, it is thus achieved that Dental implantion is repaiied The intact form data of multiple individual virtual pallet, preserve with STL form；

9) by step 8) described in STL data import the computer system that is connected with 3D printing device System, by 3D printing device, makes indivedual impression trays of hard resin material.

It is an advantage of the current invention that:

There is provided a kind of defect of dentition zoned pressure die individual tray designing and manufacturing method, by numeral Change design and the defect of dentition zoned pressure die individual tray made substitute traditional-handwork making, Realize clinical oral increasingly automated, high accuracy make defect of dentition zoned pressure die hold in the palm individually The target of dish, can be effectively improved clinical defect of dentition zoned pressure die at short notice and hold in the palm individually Dish designs and produces level, improves diagnosis and treatment efficiency and quality.

Accompanying drawing explanation

Fig. 1 defect of dentition zoned pressure die individual tray schematic diagram.

1, virtual tray main body part；2, handle；3, modeling composition overflows and fixed hole.

Detailed description of the invention

Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.

See Fig. 1, a kind of defect of dentition zoned pressure die individual tray design system of the present invention Make method, comprise the following steps:

1, a kind of defect of dentition zoned pressure die individual tray designing and manufacturing method, including with Lower step:

1) produce defect of dentition list jaw preliminary impression with ready-made tray and alginate, Gypsum Fibrosum can be irrigated Model；

2) directly scan preliminary impression or scanning plaster model with dentognathic model spatial digitizer, obtain Take denture preliminary impression or the three-dimensional data of plaster model tissue surface form；

3) scan data is called in reverse engineering software, extract mucosa fold line in scan data For edge line, intercept internal cloud data；

4) corresponding step 3) the internal cloud data of fold line of edentulous jaw preliminary impression, choose One | tooth close | gum to enter a direction, fill and lead up all undercut districts in the direction, it is thus achieved that without undercut Surface cloud data；

5) for 4) in surface cloud data, by edentulous region data along data surface normal direction It uniformly amplifies 1-3mm, and residue denture data uniformly amplify the 0.5～1mm virtual torr of acquisition Disc main body part；

6) along virtual pallet inner surface normal direction by its uniform thickened 1～3mm, in residue denture pair The tray surface answering region is reserved modeling composition and is overflowed and fixed hole；

7) virtual for upper jaw tray handle being designed as straight rectangle, the virtual tray handle of lower jaw sets It is calculated as the handle that end is triangle；

8) data boundary of virtual tray main body part and handle is merged, it is thus achieved that Dental implantion is repaiied The intact form data of multiple individual virtual pallet, preserve with STL form；

9) by step 8) described in STL data import the computer system that is connected with 3D printing device System, by 3D printing device, makes indivedual impression trays of hard resin material.

Seeing Fig. 1, described modeling composition overflows and fixed hole, when producing die in patient oral cavity, Final impression material can overflow from these apertures, and the structure forming rivet sample after modeling composition solidifies will Modeling composition is fixed on pallet, prevents modeling composition from separating with pallet.

The defect of dentition zoned pressure die individual tray of present invention Design of digital and making, Can be for different final impression material characteristicses, accurate quantification controls edentulous region alveolar ridge and residue denture Pressure when producing final impression, substitutes traditional-handwork and makes, and beneficially raising can pluck local justice Tooth design and produce degree of accuracy.

Described occlusion cast scanner can use Germany Smart Optics 880Dental Scanner company: model is Smart Optics scanner.

Three-dimensional reverse engineering software can use Raindrop Geomagic company of the U.S., Geomagic Studio 2012 version software.

As it has been described above, just can the most sufficiently realize the present invention.The foregoing is only the present invention's Relatively reasonable embodiment, protection scope of the present invention includes but are not limited to: this, ability The technical staff in territory is any all to be included based on unsubstantiality degeneration change in technical solution of the present invention Within the scope of the present invention includes.

Claims (1)

1. a defect of dentition zoned pressure die individual tray designing and manufacturing method, its feature It is to comprise the following steps:

1) produce defect of dentition list jaw preliminary impression with ready-made tray and alginate, Gypsum Fibrosum can be irrigated Model；

2) directly scan preliminary impression or scanning plaster model with dentognathic model spatial digitizer, obtain Take denture preliminary impression or the three-dimensional data of plaster model tissue surface form；

3) scan data is called in reverse engineering software, extract mucosa fold line in scan data For edge line, intercept internal cloud data；

4) corresponding step 3) the internal cloud data of fold line of edentulous jaw preliminary impression, choose One | tooth close | gum to enter a direction, fill and lead up all undercut districts in the direction, it is thus achieved that without undercut Surface cloud data；

5) for step 4) in surface cloud data, by edentulous region data along data surface It is uniformly amplified 1-3mm by normal direction, and residue denture data uniformly amplify 0.5～1mm acquisition void Intend tray main body part；

6) along virtual pallet inner surface normal direction by its uniform thickened 1～3mm, in residue denture pair The tray surface answering region is reserved modeling composition and is overflowed and fixed hole；

7) virtual for upper jaw tray handle being designed as straight rectangle, the virtual tray handle of lower jaw sets It is calculated as the handle that end is triangle；

8) data boundary of virtual tray main body part and handle is merged, it is thus achieved that Dental implantion is repaiied The intact form data of multiple individual virtual pallet, preserve with STL form；

9) by step 8) described in STL data import the computer system that is connected with 3D printing device System, by 3D printing device, makes indivedual impression trays of hard resin material.