Method for manufacturing a digital mandibular advancement appliance

Abstract

A manufacturing method of a digital mandibular protrusion appliance, comprising the following steps: Step 1, digital acquisition of the patient's dentition and mandibular protrusion position, and importing the acquired patient dentition and mandibular position data into 3D design software; Step 2, 3D design and printing of the mandibular advancement appliance, using a 3D printer to print out a model, pressing out the appliance on the model by a hot pressing process, and using it after cutting, grinding, cleaning and disinfection; It has the characteristics of simple steps, high production efficiency and easy promotion.

Description

Technical Field

[0001] The present invention belongs to the technical field of mandibular advancement appliances, and particularly relates to a method for manufacturing a digital-based mandibular advancement appliance. Background Art

[0002] Obstructive sleep apnea and hypopnea syndrome (OSAHS) is characterized by repeated upper airway obstruction during sleep, causing apnea, hypopnea, and sleep disorders, manifested as snoring, hypoxemia, and daytime sleepiness, etc., which seriously affect the life health and quality of life of patients. Using a mandibular advancement device (MAD) to treat OSAHS is a recognized and mature technology, with the advantages of non-invasive, effective, low cost, etc. The steps of manufacturing a mandibular advancement appliance using traditional methods include: taking impressions, recording the mandibular protrusion position, manufacturing upper and lower dental impression appliances, transferring the articulator, manufacturing the connector, grinding and polishing, etc. The manufacturing steps are relatively cumbersome, requiring close cooperation among doctors, nurses, and technicians. The manufacturing efficiency of the appliance is relatively low, and the accuracy is poor, seriously affecting the popularization and promotion of this technology. In recent years, with the vigorous development of digital technology in stomatology, it has become a reality to manufacture personalized mandibular advancement appliances using digital 3D design / manufacturing technology. However, manufacturing mandibular advancement appliances using traditional methods has disadvantages such as cumbersome steps and low manufacturing efficiency, which greatly hinder the popularization and promotion of this technology. Currently, there is no report on using digital methods to prepare mandibular advancement appliances for the treatment of OSAHS. Summary of the Invention

[0003] To overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a method for manufacturing a digital-based mandibular advancement appliance, which has the characteristics of simple steps, high manufacturing efficiency, and easy promotion.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: A method for manufacturing a digital-based mandibular advancement appliance, comprising the following steps:

[0005] Step 1, digital acquisition of the patient's dentition and mandibular protrusion position, and the specific method is:

[0006] Use an iTero intraoral scanner or a 3D Shape intraoral scanner to scan the information of the patient's complete dentition, gums, and labial and buccal frenula; the patient's mandible protrudes to the maximum protrusion position, and then returns to 2 / 3 of the maximum protrusion position, and the vertical distance between the incisal edges of the upper and lower anterior teeth is opened by 4-5 mm. Use the intraoral scanner to record the dentition relationship between the upper and lower jaws at this position; import the obtained patient dentition and mandibular position data into 3D design software;

[0007] Step 2: 3D design and printing of the mandibular advancement appliance. The specific method is as follows:

[0008] Use Solidworks software to model the dovetail connector. Use Materialise Magics software to adjust the dovetail head and socket to the appropriate positions in the bilateral posterior tooth areas of the patient's upper and lower jaw models, and then splice and combine them into one body respectively. Use a 3D printer to print out the model, and use a hot pressing process to press out the appliance on the model. After cutting, grinding, cleaning and disinfection, it can be used.

[0009] The dovetail connector mentioned above includes a dovetail head and a socket.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] This project plans to adopt intraoral scanning, 3D digital design and printing technology to efficiently and accurately prepare personalized mandibular advancement appliances for the treatment of mild to moderate OSAHS.

[0012] As one of the non-surgical treatment methods for OSAHS, oral appliances may effectively improve the sleep parameters and outcomes of OSAHS with almost no possibility of causing harm due to their unique advantages such as small size, safety, comfort, non-invasiveness, convenient removal and wearing, low cost and high patient tolerance. Description of the Drawings

[0013] Figure 1 It is a scanned view of the upper and lower dental arches and the mandibular protrusion position of the present invention. Among them, Figure a is the scanned view of the right mandibular protrusion position; Figure b is the scanned view of the frontal mandibular protrusion position; Figure c is the scanned view of the left mandibular protrusion position; Figure d is the scanned view of the upper dental arch; Figure e is the scanned view of the lower dental arch.

[0014] Figure 2 It is a right-side schematic diagram of the 3D design of the mandibular protrusion appliance of the present invention.

[0015] Figure 3 It is a left-side schematic diagram of the 3D design of the mandibular protrusion appliance of the present invention.

[0016] Figure 4 It is a front-side schematic diagram of the 3D design of the mandibular protrusion appliance of the present invention.

[0017] Figure 5 It is a front-side schematic diagram of the mandibular advancement appliance of the present invention.

[0018] Figure 6 It is a schematic diagram of the upper part of the mandibular advancement appliance of the present invention.

[0019] Figure 7 It is a schematic diagram of the lower part of the mandibular advancement appliance of the present invention.

[0020] Figure 8 This is a right-side photo of the mandibular advancement appliance of the present invention worn in the oral cavity.

[0021] Figure 9 This is a left-side photo of the mandibular advancement appliance of the present invention worn in the oral cavity.

[0022] Figure 10 This is a front photo of the mandibular advancement appliance of the present invention worn in the oral cavity. Detailed implementation manner

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] See Figure 1-7 , a manufacturing method of a digital mandibular protrusion appliance, comprising the following steps:

[0025] Step 1, digital acquisition of the patient's dentition and mandibular protrusion position. The specific method is as follows:

[0026] Use an iTero intraoral scanner or a 3DShape intraoral scanner to scan the patient's complete dentition, gingiva and labial and buccal frenum information; the patient's mandible protrudes to the maximum protrusion position, then retreats to 2 / 3 of the maximum protrusion position, and the vertical distance between the incisal edges of the upper and lower anterior teeth is opened by 4-5 mm. Use an intraoral scanner to record the dentition relationship between the upper and lower jaws at this position; import the obtained patient dentition and mandibular position data into 3D design software;

[0027] Step 2, 3D design and printing of the mandibular advancement appliance. The specific method is as follows:

[0028] Use Solidworks software to model the dovetail joint connector, use Materialise Magics software to adjust the dovetail head and plug to the appropriate positions in the bilateral posterior tooth areas of the patient's upper and lower jaw models, and then splice and combine them into one body respectively; use a 3D printer to print out the model, and use a hot pressing process to press out the appliance on the model. After cutting, grinding, cleaning and disinfection, it can be used.

[0029] The dovetail joint connector described above includes a dovetail head and a plug.

[0030] Example 1

[0031] Preparation and use of a digital mandibular advancement appliance

[0032] Before determining to adopt oral appliance therapy, it is generally necessary for otolaryngology experts to evaluate the patient's general condition, and after diagnosing through polysomnogram monitoring, provide a written diagnosis report and treatment suggestions. Orthodontists should formulate an appropriate treatment plan based on the diagnosis report and combined with oral special examinations related to the upper airway. After wearing it regularly for 2 to 3 months, the patient should undergo a PSG reexamination to evaluate its objective curative effect.

[0033] Step 1, digital acquisition of the patient's dentition and mandibular protrusion position. The specific method is as follows:

[0034] Use an iTero intraoral scanner or 3D Shape intraoral scanner to scan the patient's complete dentition, gingiva and labial and buccal frenum information; the patient's mandible protrudes to the maximum protrusion position, and then returns to 2 / 3 of the maximum protrusion position, and the vertical distance between the incisal edges of the upper and lower anterior teeth is opened by 4 - 5 mm. Use the intraoral scanner to record the dentition relationship between the upper and lower jaws at this position; import the obtained patient dentition and mandibular position data into 3D design software;

[0035] Step 2, 3D design and printing of the mandibular advancement appliance. The specific method is as follows:

[0036] Use Solidworks software to model the dovetail connector, use Materialise Magics software to adjust the dovetail head and plug to the appropriate positions in the bilateral posterior tooth areas of the patient's upper and lower jaw models, and then splice and combine them into one body respectively; use a 3D printer to print out the model, and use a hot pressing process to press out the appliance on the model, and use it after cutting, grinding, cleaning and disinfection.

[0037] Wearing of the mandibular advancement appliance and precautions:

[0038] Insert the appliance into the patient's mouth. The patient's mandible will be in a forced protrusion position. Observe whether the appliance fits with the upper and lower dentition and whether it compresses the oral mucosa. Instruct the patient that there will be increased saliva, discomfort in morning bite, soreness in the temporomandibular joint area, etc. during the initial wearing, and gradually get used to it. If the discomfort symptoms do not relieve, seek medical advice in time.

[0039] Effect evaluation and follow-up

[0040] 1) The apnea and hypopnea index (AHI) is an important indicator for evaluating the curative effect of oral appliances. For adults, the AHI should be less than 5 times / h. In addition, it is necessary to achieve an increase in blood oxygen saturation during sleep to the normal level, a significant relief of snoring symptoms, a significant improvement in sleep quality, and full energy and concentration during the day.

[0041] 2) For the treatment of OSAHS with oral appliances, follow-up visits are generally conducted at 2 weeks, 1 month, 3 months, 6 months, 1 year, and 2 years after wearing the appliance. Multidisciplinary examinations and evaluations are required by the stomatology department in cooperation with the neurology department, respiratory medicine department, otolaryngology department, etc. Comprehensive follow-up monitoring and regular feedback during the treatment process are necessary to timely adjust the oral appliance, so as to reduce adverse reactions and improve the clinical efficacy.

Claims

1. A method for manufacturing a digital mandibular advancement appliance, characterized in that: It includes the following steps: Step 1: Digitally obtain the patient's dentition and mandibular protrusion position. The specific method is as follows: Use an iTero intraoral scanner or a 3DShape intraoral scanner to scan the information of the patient's complete dentition, gingiva, and labial and buccal frenula; the patient protrudes the mandible to the maximum protrusion position, and then retreats to 2 / 3 of the maximum protrusion position, opening the vertical distance between the incisal edges of the upper and lower anterior teeth by 4-5 mm, and use the intraoral scanner to record the dentition relationship between the upper and lower jaws at this position; import the obtained patient dentition and mandibular position data into 3D design software; Step 2: 3D design and printing of the mandibular advancement appliance. The specific method is as follows: Use Solidworks software to model the dovetail connector, use Materialise Magics software to adjust the dovetail head and the plug to the appropriate positions in the bilateral posterior tooth areas of the patient's upper and lower jaw models, and then splice and combine them into one body respectively; use a 3D printer to print out the model, and press out the appliance on the model by a hot pressing process, and use it after cutting, grinding, cleaning and disinfection.

2. The manufacturing method of a digital mandibular protrusion appliance according to claim 1, characterized in that, The dovetail connector described above includes a dovetail head and a plug.

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