Dental bone integrated orthodontic appliance as well as design method and manufacturing method thereof

Abstract

The invention provides a dentale integrated orthodontic appliance and a design method and a manufacturing method thereof.The design method includes the steps that a digital model of the dentale integrated orthodontic appliance is generated, and the digital model of the dentale integrated orthodontic appliance comprises a shell-shaped tooth orthodontic model and a functional orthodontic model; the design method specifically comprises the following steps: acquisition of a shell-shaped tooth correction model: performing jaw position reconstruction based on a facial form demand, constructing a digital tooth jaw model under the jaw position, designing a tooth movement scheme on the reconstructed digital model, obtaining a target tooth jaw digital model, and generating the shell-shaped tooth correction model; and obtaining a function correction model: obtaining a final tooth jaw digital model based on the maximum circumference of the target tooth jaw digital model in a three-dimensional tooth movement range, and generating the function correction model based on the digital tooth correction scheme and the final tooth jaw digital model. The dental bone integrated orthodontic appliance provided by the invention can realize two-stage integrated orthodontic treatment, shorten the orthodontic treatment period and improve the orthodontic treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of tooth correction, and in particular to a tooth-bone integrated correction device and a design method and a manufacturing method thereof. Background Art

[0002] In modern orthodontic technology, invisible braces have gradually become the preferred method for many patients due to their advantages of beauty, comfort and convenience. In the prior art, several common invisible braces all adopt a staged correction method to meet the needs of different types of patients.

[0003] For example, Angelalign invisible braces are divided into two phases: the first phase A6 guides the mandible forward to match the upper and lower jaws; the second phase aligns and levels the teeth to achieve the effect of tooth cusp contact. Similarly, Smartea S8 braces guide the mandible in the first phase and adjust the tooth occlusion in the second phase. The first phase of Invisalign MA braces guides the mandible forward to stimulate the growth of the mandible and coordinate the upper and lower jaws; the second phase is to align and level the teeth and adjust the occlusion.

[0004] Although these appliances adopt different structural designs and technical means in the correction process, their basic working principles are the same. They are mainly for patients with skeletal type II mandibular disharmony, and both need to be corrected in two stages: the first stage focuses on functional orthopedic treatment and mandibular advancement, while performing certain early tooth leveling treatments; the second stage further stabilizes the jaw position by adjusting the tooth occlusion relationship. Although this two-stage correction method is effective, it has several problems: 1. Long correction period: Since two independent correction stages are required, the entire treatment process often takes a long time, increasing the patient's treatment burden and discomfort.

[0005] 2. The effect of the first-stage correction is not ideal: In the first stage of correction, if the Spee curve is not leveled well and the opening and closing distance of the posterior teeth is too large, it will affect the stability of the leading teeth, resulting in poor leading effect or even recurrence.

[0006] 3. Single function: Existing orthodontic appliances mainly focus on adjusting tooth occlusion and cannot effectively correct patients’ bad habits and remove bad muscle strength, thus affecting the long-term effect of correction. Summary of the invention

[0007] In view of the defects in the prior art, the purpose of the present invention is to provide a tooth-bone integrated correction device and a design method and a manufacturing method thereof, which can achieve dual-stage integrated correction, shorten the correction cycle, and improve the correction effect.

[0008] To achieve the above-mentioned purpose, the first aspect of the present invention provides a design method of a tooth-bone integrated correction device, wherein the tooth-bone integrated correction device is used to improve bone imbalance and adjust the tooth alignment and occlusal relationship at the same time, and the tooth-bone integrated correction device comprises a shell-shaped tooth appliance and a functional appliance sleeved outside the shell-shaped tooth appliance; The design method includes generating a digital model of a tooth-bone integrated correction device, wherein the digital model of the tooth-bone integrated correction device includes a shell-shaped tooth correction model and a functional correction model. The design method specifically includes the following steps: Acquisition of shell-shaped dental orthodontic model: First, the mandibular position is positioned by biting wax based on the need to improve the facial shape, the repositioned mandibular position is obtained, and a digital dental model is formed. Based on the digital dental model, a digital dental orthodontic scheme is designed, and a series of digital models of actual tooth movement trajectories and a digital model of the target dental model are obtained to generate a shell-shaped dental orthodontic model; Acquisition of functional correction model: Generate a terminal jaw digital model based on the maximum circumference of tooth movement in the three-dimensional direction of the target jaw digital model, and generate a functional correction model based on the digital dental correction plan and the terminal jaw digital model.

[0009] In one embodiment of the present invention, the acquisition of the shell-shaped dental orthodontic model specifically includes the following steps: The digital model of the patient's mandibular positioning is obtained by biting wax, and the digital model of the repositioned jaw for jaw reconstruction is obtained based on the facial shape; Comparing the initial dentition model information with the dentition information of the reference model, obtaining the patient's dentition feature information, and obtaining an initial dental digital model; Generate a digital dental treatment plan for the current patient based on the dentition feature information and the repositioned dental and jaw digital model, and obtain the maxillary and / or mandibular movement required for the current treatment stage; Adjust the initial dental and jaw digital model according to the maxillary and / or mandibular movement amount to obtain a target dental and jaw digital model; A shell-shaped dental orthodontic model is generated based on the target dental digital model.

[0010] In one embodiment of the present invention, the acquisition of the functional correction model specifically includes the following steps: Generate a maximum circumferential range value based on the three-dimensional movement path of the target jaw digital model, and obtain the terminal jaw digital model; Based on the digital dental correction plan and the digital model of the terminal jaw, a functional correction model is generated.

[0011] In one embodiment of the present invention, the dentition characteristic information at least includes single tooth characteristic parameter information, occlusion information, and dental arch characteristic parameter information.

[0012] In one embodiment of the present invention, the digital orthodontic treatment plan includes determining the number of correction cycles and the movement distance of the teeth in each correction cycle.

[0013] In one embodiment of the present invention, the movement distance of the teeth in each correction cycle is less than or equal to 3 mm, and the correction cycle includes one functional appliance.

[0014] In one embodiment of the present invention, if the movement distance of the teeth in each correction cycle is greater than 3 mm, then the correction cycle includes at least two of the functional appliances.

[0015] The second aspect of the present invention provides a method for manufacturing a dental-bone integrated orthodontic appliance. The digital model of the dental-bone integrated orthodontic appliance obtained according to the design method of the above-mentioned dental-bone integrated orthodontic appliance is manufactured by hot pressing film molding or by additive manufacturing or subtractive manufacturing technology to obtain the dental-bone integrated orthodontic appliance.

[0016] The third aspect of the present invention provides a tooth-bone integrated correction device, which is manufactured by the above-mentioned manufacturing method; the tooth-bone integrated correction device includes a shell-shaped dental appliance and a functional appliance mounted outside the shell-shaped dental appliance.

[0017] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: 1. The dental-bone integrated correction device provided by the present invention includes a shell-shaped dental appliance and a functional appliance mounted outside the shell-shaped dental appliance. It is a dual-stage integrated appliance, and the two stages are carried out simultaneously, so as to shorten the correction period and improve the correction effect. Specifically, the occlusal relationship is adjusted by the shell-shaped dental appliance, and the skeletal imbalance is adjusted by the functional appliance, which can improve the skeletal imbalance and adjust the teeth alignment and occlusal relationship at the same time.

[0018] 2. The dental-bone integrated correction device provided by the present invention can correct mouth breathing, tongue habits and muscle dysfunction while correcting the jaw position through functional correctors; vestibular palate can be added to correct bad mouth breathing habits, and tongue beads or tongue recesses can be used to correct bad tongue habits.

[0019] 3. The tooth-bone integrated correction device provided by the present invention can expand the buccinator muscle through the functional corrector, remove the adverse stress of the buccinator muscle on the maxillary dental arch, eliminate mouth breathing and bad tongue habits, and maintain the arch expansion effect.

[0020] 4. The manufacturing process of the tooth-bone integrated correction device provided by the present invention is flexible and can be realized by hot pressing film forming or additive or subtractive manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A flow chart of the design method of the tooth-bone integrated correction device provided by the present invention. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0023] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] It should be noted that the related terms lingual side, labial side, buccal side, gingival-maxillary direction, mesiodistal direction, and distal direction are industry terms for orthodontic treatment. In the lateral direction, the side adjacent to the lips in the anterior teeth area is called the labial side, the side adjacent to the buccal mucosa in the posterior teeth area is called the buccal side, and the side adjacent to the tongue is called the lingual side. The surfaces of the teeth are respectively called the labial side (anterior teeth area), buccal side (posterior teeth area), and lingual side. In practice, the sides adjacent to the labial side and buccal side of the anterior teeth area and the posterior teeth area, respectively, are collectively referred to as the labial and buccal sides. The surface in contact with the adjacent teeth is called the adjacent surface, among which the side close to the anterior teeth is called the mesial side, and the side far from the anterior teeth is called the distal side. The tooth surfaces are respectively called the mesial surface and the distal surface.

[0025] It should be noted that some terms in the present invention are explained as follows: Target jaw digital model: The jaw position is reconstructed based on the facial shape to obtain a repositioned jaw digital model, and the digital model of the established target position is obtained in combination with the tooth movement path. Maximum circumferential range value: the maximum diameter range in the three-dimensional direction of the tooth movement path. Its purpose is to ensure that the shell-shaped orthodontic appliance does not interfere with the movement of the functional orthodontic appliance.

[0026] Final jaw digital model: The target jaw digital model has its maximum three-dimensional circumference to obtain the final jaw digital model.

[0027] It should be noted that the term “and / or” is used as a functional word indicating that two words or expressions are used together or separately. For example, A and / or B includes A alone, B alone, and A and B together.

[0028] Example 1 The present embodiment provides a tooth-bone integrated correction device, which includes a shell-shaped dental appliance and a functional appliance sleeved outside the shell-shaped dental appliance.

[0029] The tooth-bone integrated correction device provided in this embodiment is used to improve bone imbalance and adjust the tooth alignment and occlusion relationship at the same time.

[0030] The design method of the tooth-bone integrated correction device in this embodiment includes generating a digital model of the tooth-bone integrated correction device, and the digital model of the tooth-bone integrated correction device includes a shell-shaped tooth correction model and a functional correction model.

[0031] Specifically, the design method of the tooth-bone integrated correction device in this embodiment includes the following steps: Acquisition of shell-shaped dental orthodontic model: First, the mandibular position is positioned by biting wax based on the need to improve the facial shape, the repositioned jaw position is obtained, and a digital dental model is formed. Based on the digital dental model, a digital dental orthodontic scheme is designed to obtain a series of digital models of actual tooth movement trajectories and a digital model of the target dental model, and a shell-shaped dental orthodontic model is generated; Acquisition of functional correction model: Generate a terminal jaw digital model based on the maximum circumference of tooth movement in the three-dimensional direction of the target jaw digital model, and generate a functional correction model based on the digital dental correction plan and the terminal jaw digital model.

[0032] In one embodiment, obtaining a shell-shaped dental orthodontic model comprises the following steps: The digital model of the patient's mandibular positioning is obtained by biting wax, and the digital model of the repositioned jaw for jaw reconstruction is obtained based on the facial shape; Comparing the initial dentition model information with the dentition information of the reference model to obtain the patient's dentition feature information; obtaining an initial dental digital model; Generate a digital dental treatment plan for the current patient based on the dentition feature information and the repositioned dental and jaw digital model, and obtain the maxillary and / or mandibular movement required for the current treatment stage; Adjust the initial dental and jaw digital model according to the maxillary and / or mandibular movement amount to obtain a target dental and jaw digital model; A shell-shaped dental orthodontic model is generated based on the target dental digital model.

[0033] In one embodiment, the acquisition of the functional correction model specifically includes the following steps: According to the upper and lower teeth occlusal position record information, an initial dental jaw digital model is obtained. Obtain the repositioned digital model of the jaw reconstruction required for the current treatment stage based on the patient's wax-up record; Adjust the repositioned dental and jaw digital model according to the maxillary and / or mandibular movement amount to obtain a target dental and jaw digital model; According to the three-dimensional moving path of the target jaw digital model, the maximum circumference range value is generated to obtain the final jaw digital model; A functional correction model is generated according to the digital dental correction plan and the terminal dental jaw digital model.

[0034] In one embodiment, the dentition characteristic information includes at least single tooth characteristic parameter information, occlusion information, dental arch characteristic parameter information, upper and lower teeth occlusion position record information, and the like.

[0035] In one embodiment, the digital orthodontic treatment plan includes determining the number of correction cycles and the movement distance of the teeth in each correction cycle.

[0036] In order to avoid interference between the shell-shaped dental appliance and the functional appliance and affect the correction effect, in this embodiment, the movement distance of the teeth in each correction cycle is determined by one or more outer braces.

[0037] Specifically, in one embodiment, when the movement distance of the teeth in each correction cycle is less than or equal to 3 mm, the correction cycle includes one functional appliance.

[0038] Specifically, in one embodiment, when the movement distance of the teeth in each correction cycle is greater than 3 mm, the correction cycle includes at least two of the functional appliances.

[0039] The manufacturing method of the dental-bone integrated correction device in this embodiment is as follows: the digital model of the dental-bone integrated correction device obtained by the above-mentioned design method of the dental-bone integrated correction device is formed by hot pressing film or by additive manufacturing or subtractive manufacturing technology to obtain the dental-bone integrated correction device.

[0040] In the dental-bone integrated correction device obtained in this embodiment, the functional appliance corrects the misalignment of the jaw in three dimensions, the jaw pad is designed through the front teeth in the vertical direction to assist in correcting the deep overbite, and the jaw pad is designed through the posterior teeth to assist in correcting the open and close bite of the front teeth. The buccal screen is designed to open the buccal muscles in the transverse direction to maintain the effect of maxillary expansion, and the misalignment in the asymmetric direction is improved by the functional appliance in the anterior direction, and the lateral guidance is used to correct the lateral deviation. During the treatment process, the technical barrier of invisible orthodontics that is not conducive to the elongation of molars is broken. By combining the functional appliance with the invisible appliance, it is beneficial to the elongation of the posterior teeth while stabilizing the occlusion, maintaining the treatment effect, and improving the correction efficiency. The dental-bone integrated correction device provided in this embodiment can correct bad habits while correcting teeth, thereby increasing the stability after correction.

[0041] In one embodiment, the method for manufacturing a tooth-bone integrated correction device specifically comprises the following steps: First, the upper and lower teeth occlusal position record information is obtained, and the initial jaw digital model is obtained according to the upper and lower teeth occlusal position record information, and the patient's wax occlusal record mouth scan is taken to obtain the target jaw digital model, and the maxillary and / or mandibular movement required for the current treatment stage is obtained according to the target jaw digital model; a shell-shaped dental appliance is generated according to the target jaw digital model; Wearing a shell-shaped dental appliance, the final digital model of the jaw and the functional appliance are designed according to the maximum circumference range value generated by the left and right movement path. The functional appliance is worn on the outside of the shell-shaped appliance. The shell-shaped appliance corrects tooth misalignment and assists the outer functional correction to improve bone misalignment. It plays the role of a tooth and bone simultaneous correction appliance, shortens the correction cycle, and improves the correction efficiency.

Claims

1. A method for designing a tooth-bone integrated correction device, characterized in that: The tooth-bone integrated correction device is used to improve bone imbalance and adjust the alignment and occlusion of teeth. The tooth-bone integrated correction device includes a shell-shaped tooth appliance and a functional appliance sleeved outside the shell-shaped tooth appliance. The design method includes generating a digital model of a tooth-bone integrated correction device, wherein the digital model of the tooth-bone integrated correction device includes a shell-shaped tooth correction model and a functional correction model. The design method specifically includes the following steps: Acquisition of shell-shaped dental orthodontic model: First, the mandibular position is positioned by biting wax based on the need to improve the facial shape, the repositioned mandibular position is obtained, and a digital dental model is formed. Based on the digital dental model, a digital dental orthodontic scheme is designed, and a series of digital models of actual tooth movement trajectories and a digital model of the target dental model are obtained to generate a shell-shaped dental orthodontic model; Acquisition of functional correction model: Generate a terminal jaw digital model based on the maximum circumference of tooth movement in the three-dimensional direction of the target jaw digital model, and generate a functional correction model based on the digital dental correction plan and the terminal jaw digital model.

2. The design method of the tooth-bone integrated correction device according to claim 1, characterized in that: The acquisition of the shell-shaped tooth correction model specifically includes the following steps: The digital model of the patient's mandibular positioning is obtained by biting wax, and the digital model of the repositioned jaw for jaw reconstruction is obtained based on the facial shape; Comparing the initial dentition model information with the dentition information of the reference model, obtaining the patient's dentition feature information, and obtaining an initial dental digital model; Generate a digital dental treatment plan for the current patient based on the dentition feature information and the repositioned dental and jaw digital model, and obtain the maxillary and / or mandibular movement required for the current treatment stage; Adjust the initial dental and jaw digital model according to the maxillary and / or mandibular movement amount to obtain a target dental and jaw digital model; A shell-shaped dental orthodontic model is generated based on the target dental digital model.

3. The design method of the tooth-bone integrated correction device according to claim 2, characterized in that: The acquisition of the functional correction model specifically includes the following steps: Generate a maximum circumferential range value based on the three-dimensional movement path of the target jaw digital model, and obtain the terminal jaw digital model; Based on the digital dental correction plan and the digital model of the terminal jaw, a functional correction model is generated.

4. The design method of the tooth-bone integrated correction device according to claim 3, characterized in that: The dentition characteristic information at least includes single tooth characteristic parameter information, occlusion information, and dental arch characteristic parameter information.

5. The method for designing a tooth-bone integrated correction device according to claim 3, characterized in that: The digital teeth correction plan includes determining the number of correction cycles and the movement distance of the teeth in each correction cycle.

6. The method for designing a tooth-bone integrated correction device according to claim 5, characterized in that: If the tooth movement distance in each correction cycle is less than or equal to 3 mm, then the correction cycle includes one functional appliance.

7. The method for designing a tooth-bone integrated correction device according to claim 5, characterized in that: If the tooth movement distance in each correction cycle is greater than 3 mm, then the correction cycle includes at least two of the functional appliances.

8. A method for manufacturing a tooth-bone integrated correction device, characterized in that: The digital model of the dental-bone integrated correction device obtained by the design method of the dental-bone integrated correction device according to any one of claims 1 to 7 is formed by hot pressing film or manufactured by additive manufacturing or subtractive manufacturing process to obtain the dental-bone integrated correction device.

9. A tooth-bone integrated correction device, characterized in that: The tooth-bone integrated correction device is manufactured by the manufacturing method described in claim 8; the tooth-bone integrated correction device includes a shell-shaped dental appliance and a functional appliance mounted outside the shell-shaped dental appliance.

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