Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of multilayer facing, the side suppressed using multilayer
Method controls the technical parameter in pressing process, is finally fabricated to personalized multilayer facing.
In order to solve the above technical problems, the technical solution used in the present invention is:
A kind of preparation method of multilayer facing, the number of plies >=2 layer of the multilayer facing, overall thickness are 0.2~1.2mm,
Sequence carries out according to the following steps for it:
(1) production of 3D dentognathic model
Acquired dentognathic model data are printed on 3D printer, dentognathic model is cleaned later,
Solidification;
(2) finishing of dentognathic model
Discrete interval of tooth part is modified in dentognathic model;
(3) compacting of internal layer facing
A) diaphragm is identified;
B) using being preheated with a thickness of the diaphragm of 0.1~1.0mm, preheating time is 3~35s, preheating temperature is 160~
190℃;
C the diaphragm after preheating) is buckled in progress vacuum compacting in tooth jaw prototype, the dwell time is 5~60s, air pressure 0.3
~0.8bar;
D the dentognathic model for pressing film) is subjected to extra diaphragm cutting, then overlay film is extractd, facing is cut, is thrown
Internal layer facing is finally made in light;
(4) compacting of sublevel facing
The internal layer facing prepared in step (3) is worn on dentognathic model, secondary press mold is carried out;
A) diaphragm is identified;
B) using being preheated with a thickness of the diaphragm of 0.1~1.0mm, preheating time is 3~35s, preheating temperature is 160~
190℃;
C the diaphragm after preheating) is buckled in progress vacuum compacting, dwell time 5 in the tooth jaw prototype with internal layer facing
~60s, air pressure are 0.3~0.8bar;
D the dentognathic model for pressing film) is subjected to extra diaphragm cutting, facing is cut, is polished, sublevel is finally made
Facing;
(5) compacting of N layers of facing
Wherein, the number of plies is identical as the number of press mold, and n-th layer facing is n-th press mold, wherein the press mold of N >=2 mode with
Step (4) is identical, finally obtained multilayer facing.
As a kind of restriction of the invention, the dressing method of dentognathic model described in the step (2) is using people
Work filling and repairing or software design filling and repairing.
As further limiting for above-mentioned restriction, the artificial fill method is artificial filling dental wax or filling
Dental plaster;Software design, which is filled with, carries out editor's filling to dentognathic model data before carrying out 3D printing.
Limited as another kind of the invention, A in the step (3)) be to the recognition methods of diaphragm described in step
It is scanned and recognized on film laminator.
As the third of the invention restriction, D in the step (3)) step carrying out cutting in facing cutting process
After cutting, the shape of internal layer facing be length identical as sublevel facing, that internal layer facing coats corona be less than sublevel facing length,
Internal layer facing only coats lip side corona, internal layer facing only coats tongue side corona, internal layer facing only coats single tooth hat, internal layer facing
It only coats more continuous coronas or internal layer facing only coats one of more discontinuous coronas.
As further limiting for above-mentioned restriction, the shape of the internal layer facing is the length that internal layer facing coats corona
Less than sublevel facing length when, length range is that corona occlusal end words laterally descend height≤internal layer facing tooth of 0.1mm
The height of the height < sublevel facing corona cladding of hat cladding;If it is 3 layers or more of facing, every layer from corona from inside to outside
Occlusal end words laterally under height gradually increase.
As 4th kind of restriction of the invention, when using diaphragm thickness in the step (3) as 0.1mm, diaphragm it is pre-
The hot time is 3~5s, and preheating temperature is 160~170 DEG C, and the dwell time is 5~10s;When diaphragm thickness is 0.5mm, diaphragm
Preheating time is 15~25s, and preheating temperature is 160~190 DEG C, and the dwell time is 10~20s;When diaphragm thickness is 0.75mm,
The preheating time of diaphragm is 25~35s, and preheating temperature is 160~190 DEG C, and the dwell time is 20~60s;Diaphragm thickness is
When 1.0mm, the preheating time of diaphragm is 25~35s, and preheating temperature is 160~190 DEG C, and the dwell time is 30~60s.
Being limited as of the invention the 5th kind, C in the step (4)) step is in secondary press mold, first in tooth jaw mould
The brushing for easily tearing formula adhesive film is carried out in type, then internal layer facing is worn on dentognathic model again after adhesive film is dry, finally
Secondary press mold is carried out, formula adhesive film will be easily torn again after the completion of press mold and removes.
As the 6th kind of restriction of the invention, internal layer facing is worn in the step (4) dentognathic model and step (3)
In dentognathic model be the same or different dentognathic model for rescuing step.
The present invention is detachable structure between the multilayer facing or is bonded as one there are also a kind of restriction.
Due to the adoption of the above technical solution, compared with prior art, the present invention acquired technological progress is:
The method that the present invention uses multilayer compacting controls the technical parameter in pressing process, is finally fabricated to individual character
The multilayer facing of change.For the facing used for multilayered structure, it is that the shape of internal layer facing is and sublevel facing that structure, which can be a variety of,
Identical, internal layer facing cladding corona length is less than the length of sublevel facing, internal layer facing only coats lip side corona, internal layer facing
Only coat tongue side corona, internal layer facing only coats single tooth, internal layer facing only coats more continuous teeth or internal layer tooth
Set only coats one of more discontinuous teeth, while facilitating patient to pluck band, can play rectifying effect, can be directed to
The patient of different symptoms carries out personalized treatment, and multilayer facing, which can shorten, entirely to be rescued the time, and the comfort level of wearing increases.
Using method provided by the present invention during carrying out the compacting of sublevel facing, tooth jaw mould can be effectively placed
Dental wax or gypsum are for the pollution on the inside of facing in type filling process, when being filled using dental wax, not only
Not except easy cleaning, can also have an impact to the cutting of subsequent facing and bruting process, to being polluted on the inside of facing so that cutting
It skids, cut edge is undesirable, also has an impact to the utensil of cutting and polishing, shortens the service life of utensil.Multilayer
The preparation of facing, involved in technical parameter have a direct impact to final rectifying effect, during orthodontic
Case type have otherness, therefore multilayer facing can be directed to these othernesses, to patient carry out personalized treatment, such as needle
To patients with periodontal disease, every layer of thickness may be relatively thin in multilayer facing, and the height apart from bead line increases, and facilitates plucking for patient
Band, and further the gum of patient will not be caused to damage.
The present invention is suitable for the preparation of multilayer facing.
The present invention is described in further detail below in conjunction with specific embodiment.
A kind of preparation method of the multilayer facing of embodiment 1
A kind of preparation method of bilayer facing, overall thickness 1.0mm, sequence carries out according to the following steps for it:
(1) production of 3D dentognathic model
Acquired dentognathic model data are printed on 3D printer, later dentognathic model clean solid
Change;
(2) finishing of dentognathic model
Discrete interval of tooth part is modified in dentognathic model;Wherein, dressing method is using artificial filling
Perhaps it is artificial filling dental wax or filling dental plaster that software design, which fills the artificial fill method,;Software is set
Meter, which is filled with, carries out editor's filling to dentognathic model data before carrying out 3D printing;
(3) compacting of internal layer facing
A) diaphragm is identified, recognition methods is to scan and recognize on film laminator;
B) using being preheated with a thickness of the diaphragm of 0.5mm, preheating time 20s, preheating temperature is 190 DEG C;
C the diaphragm after preheating, which) is buckled in progress vacuum compacting, dwell time 60s, air pressure in tooth jaw prototype, is
0.4bar;
D) dentognathic model for pressing film is cut, then extracts overlay film, facing is cut, is polished, finally
Internal layer facing is made;The shape of internal layer facing is that length identical as sublevel facing, that internal layer facing coats corona is less than sublevel tooth
The length of set, internal layer facing only coat lip side corona, internal layer facing only coats tongue side corona, internal layer facing only coats single tooth
Tooth, internal layer facing only coat more continuous teeth or internal layer facing only coats one of more discontinuous teeth.It is described
Internal layer facing shape be internal layer facing coat corona length be less than sublevel facing length when, length range be corona
Occlusal end words laterally descend the height of height≤internal layer facing corona cladding height < sublevel facing corona cladding of 0.1mm.
(4) compacting of sublevel facing
The internal layer facing prepared in step (3) is worn on dentognathic model, secondary press mold is carried out;
A the brushing for easily tearing formula adhesive film) is carried out on dentognathic model;
B) diaphragm is identified, recognition methods is to scan and recognize on film laminator;
C) using being preheated with a thickness of the diaphragm of 0.5mm, preheating time 20s, preheating temperature is 190 DEG C;
D) diaphragm after preheating will be buckled in the tooth jaw prototype with internal layer facing and will be carried out very again after adhesive film is dry
Pneumatics system, dwell time 60s, air pressure 0.4bar;
E) formula adhesive film will be easily torn again after the completion of press mold to remove;
F) dentognathic model for pressing film is cut, facing is cut, is polished, it is final that the double-deck facing is made.
When due to secondary press mold, the modes of emplacement of diaphragm is different from the mode used when press mold for the first time, i.e. the direction of overlay film
For opposite direction, for the first time when press mold, overlay film can be convenient and remove close to dentognathic model side, in order to avoid dental wax when filling
Be pasted onto the inside of facing, when secondary press mold, the direction of overlay film is the outside of dentognathic model, if inside internal layer facing and
Overlay film is just had between sublevel facing, it has not been convenient to be removed, therefore when carrying out secondary press mold, be carried out first on dentognathic model easy
The brushing of formula adhesive film is torn, then internal layer facing is worn on dentognathic model again after adhesive film is dry, finally carries out secondary pressure
Film will easily tear formula adhesive film again after the completion of press mold and remove, and dental wax is pasted onto tooth when can effectively reduce secondary press mold
Cover the degree of inside, more convenient subsequent cleaning, grinding and buffing.
Dentognathic model and the dentognathic model in step (3) that internal layer facing is worn in the step (4) to be identical or
Difference rescues the dentognathic model of step, and when the dentognathic model for rescuing step using difference carries out press mold, usual situation bottom is adopted
With the adjacent dentognathic model rescued in step.
It is detachable structure between the multilayer facing or is bonded as one, when for separate structure, can carries out
The wearing of layering.