NZ774279A - System for Making Dental Appliances and Method for Preparing Invisible Appliance Using the System - Google Patents

Abstract

The purpose of the present invention is to provide a system for manufacturing a dental appliance and a method for manufacturing an invisible appliance using the system, so as to unify the entire process of making an invisible appliance. Shortening the production cycle of the current invisible aligners is more conducive to the advancement of the correction process of patients, and also reduces the inconvenience caused by subsequent modification of the treatment plan. rs is more conducive to the advancement of the correction process of patients, and also reduces the inconvenience caused by subsequent modification of the treatment plan.

Description

System for Making Dental Appliances and Method for Preparing Invisible Appliance Using the System cal field The present invention s to the fields of orthodontic ent and additive manufacturing, and more particularly to a system for cturing orthodontic appliances and a method for preparing invisible nces using the system.

Background technique Dentognathic deformity is a kind of oral disease, with a high prevalence. There is a ion where the wire is rubbing the lips, which will affect the beauty and cause damage to the other lips. At the same time, because the braces need to be corrected on the teeth for a long time, the cleaning of the teeth during the entire correction process will cause great difficulties and cannot protect the teeth. Work can cause tooth demineralization and discoloration; moreover, doctors are required to adjust the arch wires and brackets at each stage during the correction s. The correction process is extremely complicated and the entire process relies on the personal ence of the orthodontist, which will cause uneven correction effects. Uneven.

In comparison, the ble aligner can overcome the above-mentioned problems. The invisible aligner does not e brackets and arch wires, and will not affect the aesthetics when worn. In addition, the invisible orthodontics technology will carry out a phased planning for the treatment plan for the treated patients. Each stage produces a batch of aligners for the treated patients to wear by themselves, which reduces the cumbersome s of regular follow-up visits and simplifies the clinical operation. Since the patient can remove it by himself, oral hygiene can also be maintained normally. Therefore, invisible correction technology has been widely used in general orthodontic treatment.

At present, the application of invisible orthodontic technology is still a situation where "diagnosis" and "production" are separated. The diagnosis plan is determined by the orthodontist in the hospital, and the manufacturer makes a matching invisible aligner according to the doctor's treatment plan. The s is: The doctor diagnoses, determines the plan, sends the data to the manufacturer, the manufacturer processes and produces, and sends it back to the doctor after the production is completed. The cycle is relatively long. At the same time, it is not possible to proceed smoothly after the plan is formulated. During the period, the treatment effect may be different from the expected goal, and the ent plan needs to be usted or set. This will increase the production cycle of the appliance and the treatment cycle of the patient, which is not beneficial to the patient Correction.

Summary of the invention The purpose of the present invention is to provide a system for manufacturing a dental appliance and a method for manufacturing an invisible appliance using the system, so as to unify the entire process of making an invisible appliance. Shortening the production cycle of the current invisible aligners is more conducive to the advancement of the correction process of patients, and also reduces the inconvenience caused by subsequent modification of the treatment plan.

In order to achieve the above-mentioned purpose, the system of the present invention for making dental appliances includes a data acquisition system, a modelling system, a moulding system, a thermoforming system, and a detection ; The data acquisition system includes a data acquisition system used to collect dental jaw data of the patient to be treated, and use reverse software to reconstruct the three-dimensional dental jaw model for the orthodontist to diagnose and formulate a treatment plan. Initial l dental model; The modelling system includes the use of analysis software to formulate a standard digital dental model based on the initial digital dental model, and the establishment of the expected target digital dental model to be achieved in each stage of the dental jaw according to the treatment plan, A solid dental model is made by DLP surface re moulding 3D printing moulding equipment; The thermoforming system includes the use of a thermoplastic laminating machine to press the film al of the invisible appliance on each solid dental model to e the corresponding invisible appliance according to the produced solid dental model; The detection system includes a ion system for observing and detecting the difference between the actual treatment ion of the tooth and the expected target treatment condition during the treatment of the patient, and detecting whether the treatment target is reached after the treatment is completed; The method for preparing an invisible appliance using a system for making a dental appliance es the following steps: 1) t the ral dental impression of the patient to be d with impression materials and tools, and then use an optical scanner to scan the dental impression to obtain corresponding three-dimensional data and te an initial digital dental model; or Use the oral scanner to ly obtain the digital dental model of the patient to be treated; 2) The orthodontist formulates an orthodontic plan according to step 1) the initial digital model, and ishes a digital dental model corresponding to an expected target for each stage of orthodontic ment according to the moving distance, direction, and form of each tooth; 3) In step 2), each expected target digital dental model is repaired to meet the production requirements of 3D printing moulding equipment, and each expected target is printed by DLP e exposure moulding 3D printing moulding equipment. The solid dental model of the dental model is then cleaned and surface treated; 4) The diaphragm material of the invisible appliance is heated by a thermoplastic laminating machine, and a matching invisible appliance is pressed on each solid dental model ed in step 3); 5) The patient to be treated wears an invisible appliance to treat the teeth. After each stage of wearing is completed, an impression scan or direct scan is performed to obtain the current digital dental model, and the current digital dental model and the expected target e the dental model to determine whether it is within the acceptable error range, if it is, continue with the subsequent correction, if it is out of the error range, re-form the tion plan, repeat steps 2-4).

Compared with the existing invisible correction technology and its manufacturing method, the features and advantageous effects of the present ion are embodied in: 1. The ng mechanism of separation between the setting of the treatment plan and the production of invisible appliances is improved, and the whole process from data collection to production of invisible appliances can be unified by using the system for making dental appliances. Realize the close cooperation between the production of invisible aligners and the g and treatment of patients to be treated, which is more ive to the treatment of patients; 2. From digital acquisition of data to digital ing, and then to 3D printing DLP surface exposure moulding process to make a solid dental model, the stability and accuracy of the data are guaranteed, and the efficiency of making invisible appliances is greatly improved. It also provides data support for the subsequent testing phase; 3. The addition of the detection system provides an opportunity and basis for adjustment for the entire tion process, which can continuously improve the tion process; 4. The establishment of the system can not only greatly save the time for making invisible aligners, promote the treatment process of patients, but also reduce the overall production cost, transportation cost, and treatment cost.

Detailed ways The system for making dental appliances and the method for making invisible appliances using the system are described in detail below.

The system of the present invention for making a dental appliance includes a data acquisition system, a modelling system, a ng system, a hot press moulding system, and a detection system.

The data acquisition system includes an initial l dental model for collecting dental jaw data of the patient to be treated for diagnosis and treatment plan formulation by orthodontists.

In the s of collecting data, first add a part of the impression material according to the tion of water, turn it into a s shape for impression use, fill the impression al into the tray groove, and then put it into the mouth of the patient to be treated Modulo operation. When taking the mould, ensure that the cheeks of the patient to be d are relaxed and the mouth is clean. Pay attention to the contact between the tray and the entire jaw to ensure the integrity of the teeth in the posterior area. After finishing the extraction of the impression, pour the plaster into the tray and place it until the plaster is solidified to make the dental jaw male mould. Then place the finished male mould on the scanning table, and use a three-dimensional scanner to scan the male mould three hundred and sixty degrees. Import the complete 3D data from the scan into the computer, and use the processing software to reconstruct the model to obtain the initial digital dental model; or use the oral scanner to obtain the 3D model.

The modelling system includes the use of reverse analysis software to formulate a standard digital dental model on the basis of the initial digital dental model, and ish the expected target digital dental model of the dental jaw to be corrected in each stage according to the treatment plan, which represents the ed correction situation of the patients to be corrected under the treatment of orthodontists in different periods.

The ic process is to determine the ion, distance, and mode of the tooth that needs to be moved according to the correction plan formulated by the orthodontist for the patient, using reverse software for processing. Then, a digital dental model of different stages of treatment and a digital dental model of the expected goal d after the final treatment is completed. These models were repaired and adjusted separately to meet the manufacturing requirements of 3D printing ng equipment for DLP surface re moulding.

The moulding system includes a l dental model according to each expected target, through DLP surface exposure melding 3D printing moulding equipment to produce a solid dental model.

Import the processed data to be printed into the supporting re of the DLP e exposure g 3D printing moulding equipment, perform the slicing process and obtain the file data after the slicing, adjust the material parameters and other printing parameters, and start the solid dental model Print production. After the printing is completed, the removed solid dental model is cleaned with alcohol to erase the uncured residue on the surface, and finally irradiated with an ultraviolet lamp for further curing.

The thermo-compression moulding system includes using the diaphragm material of the invisible appliance to press the corresponding invisible appliance on each solid dental model ing to the produced solid dental model.

According to the doctor's treatment plan for the patient, e agm materials of different thicknesses. Place the 3D printed solid dental jaw model under the lamination device of the vacuum blister machine. Then put the diaphragm material used to make the invisible appliance into a thermoplastic laminating machine and heat it until the diaphragm s soft. The heated diaphragm material is pressed on the solid dental model in different stages of orthodontics, and invisible orthodontics for different stages are produced. After it is cooled, fixed and shaped, it is removed, the excess part under the crown is cut off, and the surface of the invisible appliance is polished to make it into an invisible appliance for patients to be d at different stages.

The detection system includes a detection system for observing and detecting the difference between the actual treatment condition of the tooth and the expected target treatment condition during the ent of the patient, and detecting whether the treatment target is reached after the treatment is completed.

After the patient has worn one or several stages of the invisible appliance, the patient to be treated will perform another extraction of the oral and jaw data. The acquired three-dimensional data is tructed, and the digital dental model obtained is defined as the digital dental model after stage treatment. Compare with the expected l dental model at this stage to determine whether the correction at this stage is within an acceptable range. If the ements are met, the next stage of wearing correction can be carried out, otherwise the treatment plan will be readjusted. After all the ent stages are ted, an intraoral dental jaw data is extracted through the data acquisition system, and the digital dental model after the treatment is completed, and the ison and analysis with the standard digital dental model are performed to judge the treatment effect. If the ent effect is within the acceptable error range of the expected , the treatment is considered complete.

The t invention unifies all the processes of making invisible aligners, improves the efficiency of invisible aligner manufacturing and production, and more effectively promotes the treatment process of patients. During the treatment process, the treatment plan can be continuously optimized and the treatment effect can be improved.