CN118285942A - Using method of double-layer appliance - Google Patents

Abstract

The invention discloses a use method of a double-layer appliance, which comprises the following steps: s01: acquiring tooth information of a patient; s02: constructing a three-dimensional model of the patient's teeth; s03: designing a final movement model; s04: auditing the plan and producing a step-by-step tooth model and appliance; s05: the patient wears the appliance for treatment; compared with the traditional correction, the technical scheme provided by the invention has the advantages that the double-layer-structure correction device is adopted, and the inner layer structure is made of soft materials, so that the tooth moving distance of each correction is increased from 0.3 millimeter to 1 millimeter, the distribution times of the correction process are reduced, the number of correction devices is correspondingly reduced, the cost of the correction devices is saved, and the re-diagnosis time of patients can be reduced due to the reduction of the number of tooth sockets.

Description

Using method of double-layer appliance

Technical Field

The invention relates to the technical field of tooth correction devices, in particular to a use method of a double-layer correction device.

Background

In the traditional orthodontic, small metal sheets called brackets are bonded on teeth, and then an orthodontic archwire is ligated up to enable the teeth to move, so that the aim of correcting is fulfilled. The steel wire bracket appliance often gives the impression of full mouth 'iron tooth steel tooth', which not only affects the beauty, but also is easy to cause the conditions of steel wire scraping mouth, gum bleeding and the like, and food residues remained on the steel wire bracket appliance are difficult to eliminate, so that the oral cavity is inconvenient to maintain, and the problems of gum inflammation, tooth demineralization and color change and the like can be caused. Later, the orthodontic invisible correction technology adopts a computer three-dimensional reconstruction and auxiliary software design, a series of continuous correction devices are manufactured by using mechanical equipment, and the purpose of correction is finally achieved by continuously moving the teeth in a smaller range and periodontal tissues. Compared with the traditional correction technology, the invisible correction technology has the advantages of transparency, attractive appearance, easy taking off and wearing, sanitation, cleanness, convenience for cleaning, predictable treatment result, comfort and safety in wearing and the like. The invisible appliance is usually formed on a required die under certain mechanical external force or pressure by heating and softening a transparent polymer film, but the conventional invisible appliance is single-layer, and has harder texture and shorter tooth moving distance each time due to a single-layer structure, so that the appliance needs to be replaced for multiple times in the correcting process, and correspondingly, repeated diagnosis is required, so that the process is complicated, and time and labor are wasted.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to provide a use method of a double-layer appliance, which solves the problems that the existing appliance needs to be replaced for many times and wastes time and labor.

2. Technical proposal

In order to solve the problems, the technical scheme provided by the invention is as follows:

The application method of the double-layer appliance comprises the following steps:

S01: acquiring tooth information of a patient;

S02: constructing a three-dimensional model of the patient's teeth;

S03: designing a final movement model;

s04: auditing the plan and producing a step-by-step tooth model and appliance;

S05: the patient wears the appliance for treatment.

Further, in step S01, patient data is acquired using a scanner, and the acquired dental data includes maxillary, mandibular, bite data, and an external and internal mouth view of the patient.

Further, the external illumination comprises a front face illumination, a front smile illumination and a side face illumination; the intraoral photographs include maxillary dentition photograph, mandibular dentition photograph, left side bite photograph, right side bite photograph, and front bite photograph.

Further, in step S02, modeling is performed according to the obtained dental information of the patient using specialized dental modeling software.

Further, in step S03, the teeth are aligned according to six elements of Andrews to obtain a corrected tooth model, and the corrected tooth model is compared with the current tooth model of the patient, and is designed step by step.

Further, andrews six elements include element 1, ideal dental arch; element 2, ideal jaw anteroposterior positional relationship; element 3, ideal jaw horizontal positional relationship; element 4, ideal vertical jaw positional relationship; element 5, ideal chin prominence; element 6, ideal occlusion relationship.

Further, in step S04, the doctor examines the hierarchical design scheme according to six elements of Andrews, and the passing scheme produces the distributed designed tooth model and the corresponding appliance.

Further, the patient wears the appliance by printing out the designed tooth model of each step and producing the worn appliance according to the tooth model of each step in sequence.

Further, the produced appliance is formed by hot melting a soft layer and a hard layer, wherein the soft layer is contacted with teeth, and the hard layer is covered on the soft layer.

Further, in step S05, the patient wears the appliance to wear the convex attachment, the convex attachment body is conical, and the top is arc-shaped.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

Compared with the traditional correction, the technical scheme provided by the invention has the advantages that the double-layer-structure correction device is adopted, and the inner layer structure is made of soft materials, so that the tooth moving distance of each correction is increased from 0.3 millimeter to 1 millimeter, the distribution times of the correction process are reduced, the number of correction devices is correspondingly reduced, the cost of the correction devices is saved, and the re-diagnosis time of patients can be reduced due to the reduction of the number of tooth sockets.

Drawings

FIG. 1 is a schematic view of an appliance according to the present invention;

Fig. 2 is an exploded view of the appliance of the present invention.

FIG. 3 is a schematic illustration of the fitting of an appliance with an accessory in accordance with the present invention;

Fig. 4 is a side view of the accessory according to the present invention.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.

1-4, A double-layer appliance is used, teeth of a patient are corrected step by step through a plurality of appliances, and accessories are needed to be matched when the appliances are worn.

The appliance 10 is a double-layer appliance, the appliance 10 is of a double-layer composite structure formed by combining a soft layer 12 and a hard layer 11 into a whole, the soft layer 12 is close to the tooth side and is worn on the tooth, the soft layer 12 is formed by pressing a soft film, and the soft film has super elasticity, so that the fault tolerance rate of the tooth can be relatively high, when the appliance is used, the appliance scheme can be designed to enlarge the step distance, the movement amount of 1mm is designed every step, compared with the traditional appliance, the frequency and the number of the appliance for replacing a patient can be obviously saved by designing the movement amount of 0.3mm every step, the medical pressure of the patient can be reduced, and in addition, the soft film is more comfortable to wear on the tooth and is easy to take in place.

The double-layer appliance is formed by pressing tooth films of a patient, the tooth condition of the patient during medical treatment and the teeth after the correction of the patient are designed step by step when the patient is in correction treatment, the correction steps are carried out for a plurality of times according to the movement distance of each tooth, the tooth positions after correction of each step are manufactured to manufacture corresponding appliances, the double-layer appliance manufactured in the mode is used for a silica gel appliance, the silica gel appliance is only of a plurality of models with the size similar to that of the dental arch of the patient when the patient is used, then the patient is worn to bite, so that the teeth are guided to be aligned, the individualized appliance is obtained according to the data obtained by the teeth scanning of the patient, then the tooth molds are obtained through operations such as incised teeth, tooth arrangement and the like, the individualized appliance can achieve accurate treatment, the movement of the teeth is controlled, and the torque expression can be more accurate.

When the double-layer appliance is used, the appliance accessory can be used to be matched with the appliance, so that the appliance is more stable, compared with the conventional accessory, the accessory used by the double-layer appliance is the convex accessory 13 similar to a mongolian yurt, the main body of the convex accessory 13 is in a conical design, the top of the convex accessory is in a circular arc design, and the double-layer appliance has the advantages that the accessory is in a chamfer-free design, is convenient to take and put on, is in a circular arc design, and has higher fault tolerance.

The use method of the double-layer appliance in the technical scheme comprises the following steps:

s01: acquiring tooth information of a patient, and scanning and acquiring an original three-dimensional tooth model follow-up photo of the patient;

A doctor uses a mouth scanning scanner to scan and acquire dental data of a patient, wherein the dental data of the patient comprise upper jaw dental data, lower jaw dental data and upper and lower jaw dental occlusion data, and meanwhile, a camera is used for shooting facial photos of the patient, namely 3 pieces of mouth external photos: front, front smile, side, 5 intraoral: the upper jaw dentition, the lower jaw dentition, the left side occlusion, the right side occlusion and the front side occlusion are taken, and a designer can utilize the data provided by a doctor to carry out detailed analysis and diagnosis so as to assist in designing an accurate treatment scheme;

S02: constructing a three-dimensional model of the teeth of the patient, modeling according to the mouth sweeping model and the photo, and cutting the teeth so that each tooth can be independently corrected;

Modeling the scanned mouth scan data by using professional modeling software, wherein the modeling comprises operations of constructing an occlusion plane, cutting teeth, establishing a tooth coordinate system and the like, the step is to prepare for moving teeth, and the moving teeth can be designed only after each tooth is established according to a standard coordinate axis;

s03: and (3) designing a final movement model, adding accessories, and carrying out step-by-step correction process between the current tooth condition of the patient and the corrected tooth condition, wherein the movement distance of each step of the teeth is designed to be 1mm.

The tooth arrangement is to arrange teeth according to six element requirements of Andrews by tooth arrangement software, and step design is needed after tooth arrangement, wherein the step design is to disperse total movement of teeth, and tooth models of each step of correction position are obtained according to the step design.

For example, a tooth needs to move 5mm, and then on average, each step needs to be designed to move 1mm, and then 5 pairs of correction devices are needed to finish the tooth; the movement amount of each step of 1mm is formulated according to the maximum correction force expression of the appliance diaphragm, and if the maximum movement amount is exceeded, teeth are unhooked, so that tooth movement fails;

s04: auditing the plan and producing a step-by-step tooth model and appliance;

The doctor carries out scheme audit according to six elements of Andrews, the scheme is reasonable to approve production, the modification opinion is unreasonably filled, and the designer carries out scheme modification on the opinion of the root doctor until the doctor is satisfied;

andrews six elements include element 1, ideal dental arch; element 2, ideal jaw anteroposterior positional relationship; element 3, ideal jaw horizontal positional relationship; element 4, ideal vertical jaw positional relationship; element 5, ideal chin prominence; element 6, ideal occlusion relationship.

The six elements of Andrews are the cores of the orthodontic treatment, the tooth structure conforming to the six elements of Andrews is a good tooth state for finishing the orthodontic treatment, and doctors can obtain an orthodontic treatment scheme according to the requirements of the six elements of Andrews.

3D printed tooth model

Each designed tooth model is printed out by using a 3D printer, and the 3D printing principle is a technology for manufacturing a three-dimensional entity by stacking materials layer by layer. The basic principle can be summarized as the following steps:

1. data preparation

2. Slice processing

3. Printing process

4. Post-processing to obtain a final product;

6. the tooth model of each step is printed out by using 3D, and the corresponding appliance is pressed by a hot-press molding technology.

Thermoforming is the use of heat and pressure to shape a material into a desired shape. In the dental field, hot press molding techniques are often used to make dental appliances such as dentures and aligners. The basic principle is that thermoplastic material is heated to semi-molten state, and then flows and fills the cavity of the mould by applying pressure under the action of the mould or the press, and is solidified and formed after cooling.

S05: patient wears appliance for treatment, method of using invisible appliance and notice

1. Washing hands: before wearing the invisible appliance, the hands need to be washed to avoid bacteria on the hands polluting the invisible appliance.

2. Cleaning teeth: careful cleaning of the teeth and gums is required prior to wearing the invisible appliance to avoid leaving bacteria and food residues in the invisible appliance.

3. Taking out the appliance: taking out the appliance from the packaging box, ensuring that the appliance is designed for the current stage, marking the left and right sides, and wearing according to the steps

4. Wearing an appliance: lightly aligning the appliance with the teeth and gradually pressing the appliance from front to back to ensure that the appliance closely fits the tooth surfaces. The appliance can be gently pressed with a finger to make it more conformable.

5. Adjusting the appliance: if the appliance is not fully conformable, a bite or medical roll assist fit may be used. The bite or medical roll is placed between the appliance and the teeth, gently bitten for a few seconds, then the bite or medical roll is removed, and the appliance is checked again for fit.

6. Confirming the fitting degree: check if the appliance is tightly fitted to the tooth surface before the mirror, ensure that there are no bubbles or voids. If the appliance is found to be unsuitable or not tightly fitted, the dentist is contacted in time to adjust.

7. Wear time: generally, it is recommended to wear the invisible appliance for 20-22 hours per day, only to remove it during eating and brushing. Please follow the dentist's advice and guidance to ensure the best corrective effect.

8. Cleaning and preserving the appliance: after the appliance is removed, the appliance needs to be cleaned and stored in time. The appliance may be rinsed with flowing fresh water, or rinsed with a professional appliance cleaner. After cleaning, the appliance is stored in a breathable box, so that direct sunlight or high-temperature environment is avoided.

The overall thickness of the appliance is between 1.5 and 2.5mm, wherein the thickness of the soft layer is between 0.5 and 0.6 mm.

The appliance structure introduction:

The processing technology of the appliance is that the appliance is manufactured by a hot press molding mode

The appliance material is formed by fusing a soft layer 12 and a hard layer 11, wherein the soft layer 12 is made of TPU material, the hard layer 11 is made of PETG material, and the PETG is transparent amorphous copolyester plastic. Is prepared by polycondensing three monomers of terephthalic acid (PTA), ethylene Glycol (EG) and 1, 4-Cyclohexanedimethanol (CHDM) by a transesterification method.

TPU, thermoplastic polyurethane elastomer, is a plastic material with several advantages. TPU is mainly prepared by polymerizing diisocyanate molecules such as diphenylmethane diisocyanate (MDI) or Toluene Diisocyanate (TDI) and macromolecular polyol and low-molecular polyol (chain extender) through chemical reaction. The molecular structure of the thermoplastic polyurethane is alternately composed of rigid blocks and flexible chain segments, so that the thermoplastic polyurethane has the flexibility of plastics and retains certain characteristics of rubber.

The role of male appendage 13:

1. Reinforcing retention: the attachment can better secure the appliance to the teeth, making the appliance more closely related to the teeth. Because the teeth and the appliance are smooth, in the wearing process, the appliance can be driven by speaking and lip teeth friction, and the accessory is just like a small dowel, so that the appliance can be more stable when being positioned in the appliance.

2. Strengthen the force application effect of the appliance to the teeth: the attachment is arranged, so that a plurality of handles are added on the teeth, the direction of the correction force can be better controlled, and the correction device can more accurately control the movement of the teeth.

The method for using the male accessory comprises the following steps:

1. fitting accessory bonding template: firstly, putting the mouth gag into the mouth, putting the bonding template in the mouth gag so as to fully position the mouth gag, and checking the fitting degree of the template and the tooth surface.

2. Cleaning tooth surfaces: if there is tartar or soft scale, the tooth surface should be properly cleaned or polished.

3. Coating an adhesive: the adhesive is dipped by a small brush and coated on the etched tooth surface, the adhesive is uniformly and stepwise arranged on the tooth surface by light blowing by an air gun to form a thin layer, and then the light is irradiated by a light curing lamp for 10 seconds.

4. Filling a composite resin material: and a proper amount of resin is taken by a resin filler to fill the cavity of the accessory on the accessory template, so that the pressurized filling is performed, and air bubbles are avoided.

5. And (3) photo-curing: the accessory template Dai Rukou is pressed into place and the accessory is illuminated with a curing light for 30 seconds. When the template is removed, the gingival square edge of the accessory template is gently lifted by a probe, so that the template is separated from the tooth surface, and then the template is removed.

The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.

Claims (10)

1. A method of using a dual layer appliance, comprising

S01: acquiring tooth information of a patient;

S02: constructing a three-dimensional model of the patient's teeth;

S03: designing a final movement model;

s04: auditing the plan and producing a step-by-step tooth model and appliance;

S05: the patient wears the appliance for treatment.

2. The method of claim 1, wherein step S01, the patient data is obtained using a scanner, and the obtained dental data includes maxillary, mandibular, occlusal data, and external and internal mouth shots of the patient.

3. The method of using a double-layer appliance of claim 2, wherein the extraoral illumination comprises a frontal illumination, a frontal smiling illumination, a side illumination; the intraoral photographs include maxillary dentition photograph, mandibular dentition photograph, left side bite photograph, right side bite photograph, and front bite photograph.

4. The method of claim 1, wherein step S02 is performed using specialized dental modeling software to model the obtained dental information of the patient.

5. The method according to claim 1, wherein in step S03, the teeth are aligned according to six elements of Andrews to obtain an orthodontic tooth model, and the orthodontic tooth model is compared with the current tooth model of the patient and is designed step by step.

6. The method of using a double layer appliance of claim 5, wherein the six elements of Andrews include element 1, the ideal dental arch; element 2, ideal jaw anteroposterior positional relationship; element 3, ideal jaw horizontal positional relationship; element 4, ideal vertical jaw positional relationship; element 5, ideal chin prominence; element 6, ideal occlusion relationship.

7. The method of claim 1, wherein in step S04, the doctor examines the split design according to six elements of Andrews, and the passing examination produces the distributed tooth model and the corresponding appliance.

8. The method of using a dual layer appliance of claim 1, wherein the patient wears the appliance by printing out the designed tooth model for each step and producing the worn appliance in sequence from the tooth model for each step.

9. The method of claim 8, wherein the appliance is manufactured by hot melting a soft layer and a hard layer, the soft layer is in contact with the teeth, and the hard layer is covered on the soft layer.

10. The method of claim 1, wherein in step S05, the patient wears the appliance to fit the male fitting, the male fitting body is conical, and the top is circular arc.