TWM625020U - Dental apparatus and shell-like appliance - Google Patents

Abstract

The invention relates to the technical field of dental orthodontics, and discloses a dental appliance and a shell-shaped orthodontic device suitable for the combined use of fixed orthodontics and invisible orthodontics. The inventive dental instrument includes an orthodontic fixture and a shell-shaped orthodontic appliance to achieve combined orthodontic treatment. The structure of the shell-shaped orthodontic appliance is set to include a sub-shell and a pair of adjacent two sides for connecting the teeth on which the orthodontic fixture is installed. The connection part of the sub-housing, the connection part only realizes the connection function, and does not contact the orthodontic fixture, and does not exert force on the teeth in the corresponding position, so that this part of the teeth can only be corrected by the orthodontic bracket and the orthodontic bracket. The line is corrected, and the correction force is single, which reduces the design difficulty of the correction plan, and at the same time improves the correction accuracy, ensuring that the correction effect is consistent with the correction plan. In addition, the shell-shaped corrector also has the characteristics of being easy to take off the belt, easy to manufacture, and long service life.

Description

Dental instruments and shell aligners

The invention relates to the technical field of dental orthodontics, in particular to a dental appliance used in combination with fixed orthodontics and invisible orthodontics, and a shell-shaped aligner suitable for the combination of fixed orthodontics and invisible orthodontics.

Orthodontics are usually the repositioning of a patient's teeth into a desired alignment to correct misalignment and/or malocclusion, maintaining the physiological function of the teeth while improving aesthetics. The traditional orthodontic method is to install braces on all the teeth of the patient. The braces mainly include brackets and orthodontic wires. During the treatment, adhesives are used to connect the base of the brackets to the surface of the teeth, and the orthodontic wires are installed on the brackets. In the groove, the orthodontic force is provided by the elastic force generated by the deformation of the orthodontic wire, and the orthodontic wire exerts a continuous orthodontic force on the teeth and gradually moves the teeth to the desired tooth position. The braces are removed after the teeth have reached their final position after a series of clinical inspections and adjustments made by the doctor over a period of time.

In addition to traditional braces (also called fixed braces), invisible orthodontic techniques using shell-shaped braces have gradually developed in recent years, compared to traditional braces (brackets, straightening wires) , Invisible correction has the characteristics of more beautiful and comfortable. However, in some cases, such as severely crowded teeth, twisted teeth, or closed extraction spaces, the shell-like appliance provides less force, so the treatment of complex cases may require a longer period of treatment. Corrective effect can be achieved. Since the correction wire used in fixed correction can provide enough correction force, the introduction of fixed correction on the basis of invisible correction can make up for the deficiency of invisible correction in complex cases and expand the application scope of invisible correction.

In the prior art, when invisible orthodontics are used in conjunction with traditional braces, the shell-shaped orthodontic device wraps the teeth with brackets installed, so that the teeth are simultaneously subjected to the orthodontic force provided by the brackets and the shell-shaped orthodontic device. The superposition greatly increases the complexity of the force on the teeth, and the orthodontic effect brought by it is difficult to control. On the one hand, it will increase the difficulty of the design of the orthodontic plan, and on the other hand, the accuracy of the orthodontic treatment cannot be guaranteed. There may be deviations in each step of the treatment, and the accumulation of deviations will eventually lead to the situation that the treatment plan cannot be continued and restarted, and even the treatment failure may occur in severe cases.

The main purpose of this creation is to provide a dental appliance and a shell-shaped aligner based on the technical problems existing in the prior art, so as to avoid the joint application of orthodontic force to the teeth by invisible orthodontics and fixed orthodontics, thereby reducing the difficulty of designing the orthodontic plan and ensuring the corrective effect. Consistent with the treatment plan.

The technical solution provided by this creation is as follows: This creation provides a dental appliance, which includes: at least one orthodontic fixture for repositioning the teeth on which the orthodontic fixture is installed, including two or more fixed on different teeth. Brackets and fasteners mounted on the brackets; at least one shell-shaped orthosis, the shell-shaped rectifier includes a shell, the shell includes at least two sub-shells and a connecting part for connecting the sub-shells; each sub-shell includes One or more cavities capable of receiving teeth, at least a portion of the cavities designed to relocate the orthodontic fixtures they receive without orthodontic fixtures installed. The teeth of the fixture; wherein, the orthodontic fixture is installed on at least part of the teeth between the adjacent sub-shells, and the connecting part connects the adjacent sub-shells; in the process of wearing the shell-shaped aligner to the jaw And after wearing, the connecting part does not contact the orthodontic fixture; during the use of the dental appliance, the connecting part and the teeth located between the adjacent sub-shells do not generate force.

Preferably, the dental appliance is such that during use of the dental appliance, the connecting portion does not contact the teeth located between adjacent sub-housings.

Preferably, the dental appliance is such that during use of the dental appliance, the connecting portion contacts the teeth between adjacent sub-housings without generating force.

Preferably, the connecting part and the orthodontic fixture are arranged on the same side or different sides of the teeth in the buccolingual or labiolingual direction.

Preferably, when the connecting part and the orthodontic fixture are arranged on the same side of the teeth, the connecting part does not have any solid structure below the orthodontic fixture.

Preferably, the bracket is installed on the labial side of the teeth in the anterior region, and the connecting portion includes a lingual side portion and does not contain a labial side portion.

Preferably, the brackets are installed on the buccal side of the teeth in the posterior region, and the connecting portion includes a lingual side part and/or an occlusal surface part, and does not contain a buccal side part.

Preferably, the dental appliance is installed on the lingual side of the teeth in the anterior region, and the connecting portion includes a labial side portion and does not contain a lingual side portion.

Preferably, the brackets are installed on the lingual side of the teeth in the posterior region, and the connecting portion includes the buccal side portion and/or the occlusal side, and does not contain the lingual side portion.

Said dental instrument preferably has a connecting portion comprising a labial/buccal side portion and a lingual side The face part, wherein the connecting part is only provided above the orthodontic fixture on the side on which the orthodontic fixture is installed.

Preferably, the connecting portion of the dental instrument includes a lip/buccal side portion, an occlusal surface portion and a lingual side portion, wherein the connecting portion is only disposed above and above the orthodontic fixture on the side where the orthodontic fixture is installed. / or both sides.

Preferably, the connecting portion of the dental instrument includes one or more connecting bodies, and the connecting bodies connect adjacent sub-housings.

Preferably, the connecting portion of the dental instrument includes a plurality of connecting bodies, and at least two connecting bodies are located on the same or different surfaces of the labial/buccal side, the lingual side, and the occlusal surface.

Preferably, the connecting body of the dental instrument is located on the lip/buccal side or the lingual side, and the width of the part of the connecting body corresponding to the orthodontic fixture in the gingival-jaw direction is less than or equal to the crown height of the corresponding tooth on which the orthodontic fixture is installed. .

Preferably, the connecting body of the dental appliance is located on the labial/buccal side, and the minimum distance between the connecting body and the outer surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0.

Preferably, the connecting body of the dental appliance is located on the lingual side, and the minimum distance between the connecting body and the inner surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0.

Preferably, the connecting body of the dental instrument is located on the occlusal surface, and the width of the part of the connecting body corresponding to the orthodontic fixture in the buccal-lingual direction is less than or equal to the width of the occlusal surface of the corresponding tooth on which the orthodontic fixture is installed.

Preferably, the shape of the connecting body of the dental appliance is substantially consistent with the occlusal surface of the corresponding tooth on which the orthodontic fixture is installed.

The dental appliance is preferably a connecting body and a tooth on which an orthodontic fixture is installed. The minimum distance between the highest points of the crowns of the teeth is greater than or equal to 0.

The present invention also provides a shell-shaped orthodontic appliance for use in the above-mentioned dental appliance. The shell-shaped orthodontic appliance includes a housing, and the housing includes at least two sub-housings and a connecting portion connecting the sub-housings; each sub-housing includes a or a plurality of cavities capable of accommodating teeth, at least a portion of which is designed to relocate the cavities contained therein without orthodontic fixtures installed; The connecting portion connects the adjacent sub-shells; during and after the shell-shaped dental appliance is worn to the jaw, the connecting portion does not contact the orthodontic fixture; during the use of the shell-shaped appliance, the connecting portion is in contact with the orthodontic fixture. Teeth located between adjacent sub-shells do not contribute to force.

At least one of the following beneficial effects can be brought about by the dental instrument and the shell-shaped orthodontic appliance provided by the present creation:

1. The shell-shaped aligner is provided with a connecting part at the position corresponding to the tooth where the bracket is installed. The connecting part is mainly to realize the connection effect, and will not exert force on the teeth in the corresponding position, so that this part of the teeth is only supported by the orthodontic bracket. And the correction line can achieve correction, and the correction force is single, which reduces the design difficulty of the correction plan; at the same time, invisible correction and fixed correction are carried out in coordination under the correction plan, which improves the correction accuracy and ensures that the correction effect is consistent with the correction plan.

2. The position design of the connecting part also makes it not in contact with the brackets in the wearing state and the process of removing and wearing, making it more convenient to take off and put on, and the connecting part is free from force and not easy to be damaged during the taking off and wearing process.

100: Dental Instruments

101: Orthodontic Fixtures

101a: Brackets

101b: Correction wire

102: Shell Corrector

103: The first sub-shell

104: Second sub-shell

105: Connector

106: Connector

107: Connector

202: Shell Corrector

205: Connector

206: Connector

207: Linker

302: Shell Corrector

305: Connector

306: Connector

307: Connector

308: Connector

309: Connector

310: Connector

402: Shell Corrector

405: Connector

503: Connector

504: Connector

601: Orthodontic Fixtures

602: Orthodontic Fixtures

603: Subshell

604: Subshell

605: Subshell

606: The first connection part

607: Second connector

700: Digital dental model

701: Teeth with orthodontic fixtures installed

702: Preset connector model

804: Connector

900: Patient Teeth

The preferred embodiments will be described below in a clear and easy-to-understand manner with reference to the accompanying drawings. The above-mentioned characteristics, technical features, advantages and implementations thereof will be further described.

1A is a schematic diagram 1 of a dental instrument provided for this creation and worn on the teeth; FIG. 1B is a schematic structural diagram of a shell-shaped aligner in the dental instrument provided in FIG. 1A ; Schematic diagram of the structure of the shape corrector.

Fig. 2A is a schematic diagram 2 of another dental instrument provided for this creation and worn on the teeth; Fig. 2B is a schematic structural diagram of a shell-shaped aligner in the dental instrument provided in Fig. 2A; Schematic diagram of the structure of the shell-shaped corrector.

Fig. 3A is a schematic diagram 3 of another dental instrument provided for this creation and worn on the teeth; Fig. 3B is a schematic structural diagram of a shell-shaped aligner in the dental instrument provided in Fig. 3A; Fig. 3C and Fig. Schematic diagram of the structure of the shell-shaped corrector on the side of the tongue.

FIG. 4A is a schematic diagram 4 of another dental appliance installed and worn on the teeth provided by the present invention; FIG. 4B is a schematic structural diagram of a shell-shaped orthodontic device in the dental appliance provided in FIG. 4A .

FIG. 5A is a schematic diagram 5 of another dental appliance being installed and worn on the teeth provided by the present invention, wherein the orthodontic fixture is arranged on the lingual side of the teeth in the posterior teeth area.

FIG. 5B is a sixth schematic diagram of another dental appliance being installed and worn on the teeth provided by the present invention, wherein the orthodontic fixture is arranged on the labial side of the teeth in the anterior teeth area.

FIG. 6 is a schematic diagram 7 of another dental appliance being installed and worn on the teeth provided by the present invention, wherein two groups of orthodontic fixtures are provided.

FIG. 7 is a schematic structural diagram of a digital dental and jaw model designed in the manufacturing method of the shell-shaped appliance provided by the present invention.

Fig. 8 is a schematic diagram of a shell-shaped appliance provided by the present invention, wherein the shape of the connecting portion is substantially the same as the occlusal surface of the teeth on which the orthodontic fixture is installed.

This creation provides a dental appliance, which can realize the cooperative use of orthodontic fixtures and shell-shaped appliances, so that the forces exerted by the shell-shaped appliances and orthodontic appliances on teeth do not affect each other. The column can coordinate the treatment, and the treatment process, correction The treatment cycle and treatment effect are more in line with the treatment plan. In addition, it can be conveniently worn and removed, the number of times of contact between the shell-shaped orthodontic appliance and the orthodontic fixture is reduced, and the service life of the shell-shaped orthodontic appliance can be prolonged.

This creation also provides a shell-shaped orthodontic appliance, which is suitable for use with orthodontic fixation appliances, can be consistent with the correction progress of the orthodontic fixation appliance under the set corresponding correction plan, and is easy to wear. Simple.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, specific implementations of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts, and obtain other implementations.

The present creation provides a dental appliance, which includes: an orthodontic fixture for repositioning a tooth on which the orthodontic fixture is installed, including two or more brackets fixed on different teeth and a bracket mounted on the bracket Fasteners; shell-like orthodontic devices, the shell-like orthodontic devices include a shell, the shell includes at least two sub-shells and a connecting portion connecting the sub-shells; each sub-shell includes one or more cavities capable of accommodating teeth, At least a portion of the cavity is designed to relocate the teeth accommodated therein without orthodontic fixtures installed; wherein the orthodontic fixtures are mounted on at least part of the teeth between adjacent sub-housings, and the connecting portion connects the adjacent sub-housings. The provided sub-housing; in the process of wearing the shell-shaped appliance to the jaws and after wearing, the connecting part does not contact the orthodontic fixture; during the use of the dental appliance, the connecting part is located between the adjacent sub-housings The teeth do not produce force.

Orthodontic treatment usually requires a doctor to design a treatment plan for the patient, which is based on clinical and In a biologically reasonable way, the patient's teeth are moved from the initial position to the final position in multiple orthodontic steps. The movement of a single tooth in each orthodontic step is designed according to the plan, so that all teeth can move within the orthodontic plan. Coordinate. The above-mentioned dental instruments provided by the present invention can be used in any orthodontic treatment procedure in which the orthodontic fixture and the shell-shaped aligner are used together in the orthodontic treatment plan. Fixed correction and invisible correction can be carried out independently under the corresponding correction plan, which ensures high correction accuracy.

In the above-mentioned dental instruments of the present creation, one or more groups of orthodontic fixtures may be provided, and each group of orthodontic fixtures is used to correct a group of teeth. In the same group of orthodontic fixtures, a plurality of brackets ( Multiple brackets can be two or more) are usually placed separately on adjacent teeth in the set of teeth, but if some of the teeth do not fit or do not need brackets, multiple brackets It is possible to respectively set on non-adjacent teeth of the group of teeth. Fasteners usually use correction wires, which are embedded in the grooves of multiple brackets (the multiple brackets can be two or more) of a set of orthodontic fixtures, deform and tend to return to the original position, and then The orthodontic force is generated, and the orthodontic force acts on the teeth through the conduction of the bracket to realize the repositioning of the teeth.

In the above-mentioned dental instrument of the present invention, the shell of the shell-shaped orthodontic appliance includes a plurality of sub-shells, and the number of the sub-shells depends on the number of orthodontic fixtures. If a set of orthodontic fixtures is provided, the shell needs to be provided with One connecting part usually includes two sub-housings, and if two sets of orthodontic fixtures are provided, the housing needs to be provided with two connecting parts, then the shell-like orthodontic device includes three sub-housings, and so on. This creation does not specifically limit the number of orthodontic fixtures and sub-shells, which can be set according to actual orthodontic needs.

In the above-mentioned dental instrument of the present invention, in the housing of the shell-like appliance, the connection The function of the part is to connect multiple sub-shells into a whole, and its position corresponds to the teeth on which orthodontic fixtures are installed. It can be said that a group of teeth with orthodontic fixtures installed is located in the adjacent sub-shells on both sides. In between, the structural setting of the connecting part must ensure that it will not exert a force on the teeth with the orthodontic fixture installed, and that the connecting part and the orthodontic appliance will not be connected to the teeth during and after the shell-shaped dental appliance is fitted to the jaw. Fixtures (usually brackets and wires) do not touch.

In the above-mentioned dental appliance of the present invention, each sub-housing of the housing of the shell-shaped appliance has one or more cavities capable of accommodating teeth, usually and preferably, each sub-housing has a plurality of cavities capable of accommodating teeth Due to the different designs of different steps of the treatment plan, the cavity at a certain position may only have the accommodating function in some treatment steps, while in another treatment step, it may have both the accommodating and repositioning functions. Therefore, in a certain treatment step In an orthodontic step, all the cavities may be used, or only a part of the cavities may have the function of repositioning the teeth. The cavities accommodate the teeth without brackets, and therefore, the repositioning of these teeth is achieved by the repositioning action of the cavities.

In the dental instruments of this creation, orthodontic fixtures are usually suitable for complex and difficult orthodontic correction, such as cases with severely crowded dentition. On the one hand, it is difficult to remove the shell-shaped aligner, and on the other hand, the shell-shaped aligner is prone to breakage. The same situation may also occur in the case of tooth torsion; for example, in the case of tooth extraction, a large gap will be left after tooth extraction. , The use of orthodontic fixtures can speed up the progress of gap closure and shorten the correction cycle, so the combined use of shell-shaped aligners and orthodontic fixtures can just complement each other.

When considering the combined use of fixed bracket type orthodontics and invisible orthodontics, the first problem to be solved is how to carry out the part corresponding to the teeth with brackets in the shell-shaped aligner Structural design, regardless of whether the bracket is accommodated in the cavity of the shell-shaped appliance, or the bracket is anchored with the shell-shaped appliance, the shell-shaped appliance will wrap part of the teeth, thereby creating a negative impact on the teeth together with the bracket. On the one hand, the design of the orthodontic plan is more difficult, and on the other hand, the orthodontic effect during the orthodontic treatment is uncontrollable, which makes a large deviation from the orthodontic plan, and the deviation will follow the orthodontic plan. It keeps accumulating, and in severe cases, the correction plan needs to be reconstructed, which will affect the correction cycle, and even cause correction failure; in addition, the shell-shaped aligner will also be damaged due to the contact with the brackets during the wearing and removal process. The convenience of wearing is reduced, and even the shell-shaped orthosis is deformed by frequent contact, and the shell-shaped orthosis is more likely to be broken.

In this invention, in the structural design of the dental appliance, only the connecting part with the function of connecting is provided at the position corresponding to the teeth corrected by the orthodontic fixture, and the connecting part does not have the function of accommodating and wrapping the orthodontic fixture or the teeth, so that the corresponding orthodontic fixture or teeth are set in the corresponding setting. Under the orthodontic treatment plan, there is no interaction between the teeth installed with the orthodontic fixture and the shell-shaped appliance, and can only move under the force of the orthodontic fixture. Carry out the design of the orthodontic steps, while the sub-shell of the shell-shaped aligner still retains the orthodontic force, which can reposition the teeth without brackets, and cooperate with the orthodontic fixture to maintain the coordinated orthodontic treatment of the entire dentition, so that the overall The correction effect is closer to the correction plan, and the correction progress is more controllable.

In the dental appliance of the present invention, the connecting portion does not contact the orthodontic fixture during and after the shell-shaped appliance is attached to the jaw. Wherein, the state after the shell-shaped orthodontic appliance is worn is the state in which the shell-shaped orthodontic appliance remains fixed on the teeth after it is in place. This creation reduces the contact between the connecting part and the orthodontic fixture, on the one hand, it ensures the convenience of the patient to remove the shell-shaped orthodontic device, and on the other hand, avoids the deformation or even breakage of the shell-shaped orthodontic device due to excessive contact. The service life of the shell-shaped corrector is prolonged.

"During the use of the dental instrument, the connection part and the teeth located between the adjacent sub-shells do not generate force" can be achieved in the following two ways. The teeth between the sub-shells are not in contact, so that there is no force acting point between the connecting part and the teeth on which the orthodontic fixture is installed, so as to ensure that no force is generated; the other is in the dental appliance. During use, the connecting part is in contact with the teeth located between the adjacent sub-shells but does not generate force. In order to ensure that the connecting part will not cause discomfort to the wearer, the connecting part may be designed with the orthodontic fixture installed. The distance between the teeth is slightly close, so that contact occurs between the connecting part and the teeth during use, but when the connecting part is designed to ensure that the contact will not cause deformation of the connecting part, the effect of no force can be achieved.

The shape of the connecting part is not particularly limited in this creation, and the basic principle is that the design is simple and easy to manufacture. Specifically, based on the preferred principle of the design of the connecting part, the above-mentioned "during the process of wearing the shell-shaped dental appliance to the jaws and after wearing, the connecting part does not contact the orthodontic fixture", and "during the use of the dental appliance, the connecting part does not contact the orthodontic fixture". , the connection part and the teeth located between the adjacent sub-shells do not produce force", the structural design of the connection part is preferably: the connection part and the orthodontic fixture are arranged on the same side of the teeth in the buccolingual or labiolingual direction or Different sides; when the connection part and the orthodontic fixture are arranged on the same side of the tooth, the connection part is not provided with any solid structure under the orthodontic fixture. For example, if the bracket is installed on the labial side of the teeth in the anterior area, the connecting part includes the lingual side part and does not contain the labial side part; or, if the bracket is installed on the buccal side of the teeth in the posterior area, the connection part is The part contains the lingual part and/or the occlusal part and does not have the buccal part; or, if the bracket is installed on the lingual part of the teeth in the anterior region, the connecting part contains the part of the labial part and does not have the part of the lingual part; or, If the brackets are installed on the lingual side of the posterior teeth, the connecting portion includes the buccal portion and/or the occlusal portion, and does not include the lingual portion; alternatively, the connecting portion includes the labial/buccal portion and the lingual portion The side part, wherein the connecting part is only arranged above the orthodontic fixing device on the side where the orthodontic fixture is installed; The side on which the orthodontic fixture is installed is only provided above and/or on both sides of the orthodontic fixture.

The terms "anterior area" and "posterior area" used in this creation are defined according to the classification of teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press. "Anterior area" includes incisors, lateral Incisors and canines, "posterior area" includes premolars and molars; the term "labial/buccal" means the labial or buccal, i.e. "/" means "or"; the terms "labial part", "" The buccal side part, the lingual side part, and the occlusal surface part respectively represent the parts of the connecting part located on the labial side, the buccal side, the lingual side, and the occlusal surface. linker.

The technical solutions in the present creation will be explained in more detail below with reference to the accompanying drawings. The drawings here follow a numbering convention, wherein the first number corresponds to the drawing number, and the remaining digits represent the elements or components in the drawings. Similar elements or elements between different figures can be identified by the use of similar numerals. For example, 102 may refer to a shell orthosis in Figure 1A, and a shell orthosis may be referred to as 302 in Figure 3A.

Please refer to FIG. 1A , which shows a schematic diagram of a dental appliance 100 of a specific implementation structure of the present invention being worn on a patient's teeth 900 . The dental appliance 100 includes an orthodontic fixture 101 and a shell-shaped appliance 102, wherein the orthodontic fixture 101 includes three brackets 101a respectively fixed on different teeth in the posterior teeth region of a patient and connected to the three brackets 101a 1B, which shows the specific implementation structure of the shell-shaped appliance 102 in FIG. 1A, the shell-shaped appliance 102 includes a shell, a shell body including first child The housing 103 and the second sub-housing 104, the first sub-housing 103 comprising a plurality of cavities, wherein each cavity is designed to accommodate teeth, and all or a portion of the cavities are designed to relocate the teeth, the second sub-housing Housing 104 includes a cavity. In FIG. 1B , the first sub-housing 103 and the second sub-housing 104 are connected by a connecting part, the connecting part includes a connecting body 105 on the lingual side, and the connecting body 105 corresponds to the part of the orthodontic fixture in the gingival-maxillary direction The width is smaller than the height of the corresponding crown of the tooth on which the orthodontic fixture is installed, and the minimum distance between the connecting body 105 and the inner surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0. The gingival-jaw direction described in this work refers to the vertical direction from the gum line to the occlusal surface.

Fig. 1C and Fig. 1D show other specific implementation structures of the shell-shaped orthosis with the connecting portion located on the side of the tongue. The connecting part in FIG. 1C includes a connecting body 106 located on the lingual side and close to the gum line. The width of the connecting body 106 in the gingival-jaw direction corresponding to the orthodontic fixture is smaller than the height of the corresponding crown of the tooth on which the orthodontic fixture is installed. , the minimum distance between the connecting body 106 and the inner surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0. The connecting part in FIG. 1D includes a connecting body 107 located on the lingual side and close to the occlusal surface. The width of the connecting body 107 in the gingival-jaw direction corresponding to the orthodontic fixture is smaller than the height of the corresponding crown of the tooth on which the orthodontic fixture is installed. , the minimum distance between the connecting body 107 and the inner surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0.

In the implementation structures shown in FIGS. 1B , 1C and 1D, the connecting portion only includes one connecting body, and the connecting body and the bracket are located on different sides. Specifically, in the above example, the connecting portion is disposed on the lingual side opposite to the bracket mounting surface (the buccal surface of the teeth in the posterior region), so that the shell-shaped appliance will not touch the bracket during the process of wearing or taking it off. Or orthodontic line, to ensure the convenience of wearing and the integrity of the shell-shaped aligner, and the orthodontic progress of the entire dentition remains consistent under the corresponding orthodontic plan, thereby regulating the patient's orthodontic cycle and orthodontic effect. technology in the art One will appreciate that, based on the above example, if the brackets are installed on the lingual surface of the teeth in the posterior region, the position of the connecting portion can be shifted accordingly to the opposite buccal position, or if the brackets are installed. On the labial or lingual surface of the teeth in the anterior region, the position of the connecting part is set on the opposite side of the bracket to ensure that the patient avoids wearing and removing the shell aligner, as well as in the state of wearing the aligner. The shell-shaped orthodontic appliance is in contact with the orthodontic fixture, which ensures the convenience of wearing, and the connecting portion and the teeth located between the adjacent sub-shells do not generate force.

In some embodiments, the connecting portion includes an occlusal surface portion, as shown in Figure 2A. FIG. 2B shows a possible design of the connecting part of the shell-like aligner 202 in FIG. 2A , the connecting part includes a connecting body 205 located on the occlusal surface, and the connecting body 205 corresponds to the part of the orthodontic fixture in the buccal-lingual direction. The width is less than or equal to the width of the corresponding occlusal surface of the tooth on which the orthodontic fixture is mounted, and the minimum distance between the connecting body 205 and the highest point of the crown of the tooth on which the orthodontic fixture is mounted is greater than or equal to 0. In the implementation structure shown in FIG. 2B , since only one connecting body is provided on the occlusal surface, no matter the bracket is installed on the buccal or lingual surface of the posterior teeth, it will not be used during the use of the shell-shaped appliance. In addition, the design of the connecting body located on the occlusal surface is less difficult, mainly considering the distance from the teeth at its height position, which is easier to achieve in the production of the corresponding shell-shaped aligners .

FIG. 2C shows another possible design of the connecting part including the occlusal surface. The connecting part includes a connecting body 206 on the lingual side and a connecting body 207 on the occlusal surface. The shape and position of the connecting body 206 are the same as those of the connecting body 105 above. The same or similar, the shape and position of the connecting body 207 are the same as or similar to the above-mentioned connecting body 205 . The design in Fig. 2C considers the shell-shaped orthosis as a whole, the larger the connection area between the connecting part and the adjacent sub-shells, the more stable the connection is, and the strength of the connecting part itself is also improved. The shell-shaped corrector is not easily damaged. In the embodiment shown in FIG. 2C , the brackets are arranged on the buccal side of the teeth in the posterior region, and the connecting part includes a lingual side part and an occlusal surface part, and does not contain a buccal side part. Those skilled in the art can know that, on the basis of the above example, when the bracket is arranged on the lingual side of the posterior teeth, the connecting part is correspondingly designed to include the buccal side part and the occlusal surface part, and does not contain the tongue side part.

When the connecting portion includes a plurality of connecting bodies, in addition to the two embodiments that the connecting bodies are located on the lingual side and the occlusal surface and the buccal side and the occlusal surface, for the dental instrument of the present creation, the connecting portion may also include a labial/buccal surface The side part and the lingual side part, wherein the connecting part is only arranged above the orthodontic fixture on the side where the orthodontic fixture is provided. See Figures 3A-3D for examples of this.

FIG. 3A is another exemplary structure of the dental appliance of the present invention worn on a patient’s teeth 900 , and FIG. 3B shows the implementation structure of the shell-like appliance 302 in FIG. 3A , wherein the connection portion of the shell-like appliance 302 includes a set The connecting body 305 on the lingual side and the connecting body 306 arranged on the buccal side near the occlusal surface; the shape and position of the connecting body 305 are the same as or similar to the above-mentioned connecting body 105; the connecting body 306 corresponds to the orthodontic fixture in the gingival-jaw direction The width of the part is smaller than the height of the corresponding crown of the tooth on which the orthodontic fixture is installed, and the minimum distance between the connecting body 306 and the outer surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0.

Figures 3C, 3D show two other possible designs of a connection comprising buccal and lingual parts. The connecting part shown in FIG. 3C includes a connecting body 307 arranged on the lingual side near the gum line and a connecting body 308 arranged on the buccal side near the occlusal surface; the shape and position of the connecting body 207 are the same as or similar to the above-mentioned connecting body 106 ; The shape and position of the connecting body 308 are the same as or similar to those of the connecting body 306 described above. The connecting part shown in FIG. 3D includes a connecting body 309 arranged on the lingual side near the occlusal surface and a connecting body 310 arranged on the buccal side near the occlusal surface; the shape of the connecting body 309 The shape and position are the same as or similar to the above-mentioned connecting body 107 ; the shape and position of the connecting body 310 are the same or similar to the above-mentioned connecting body 306 .

3B-3D of the above examples design the connecting part as a combination of two connecting bodies, which further strengthens the connection between the first sub-shell and the second sub-shell of the shell-shaped orthodontic appliance without contacting the orthodontic fixture. The connection makes the orthodontic progress of the entire dentition consistent under the corresponding orthodontic plan, and then regulates the orthodontic period and orthodontic effect of the teeth. Those skilled in the art can know that, on the basis of the above example, if the bracket is installed on the lingual surface of the tooth, the connecting body on the lingual side should be correspondingly arranged above the bracket to ensure that the patient is in the Avoid contact between the orthodontic appliance and the orthodontic fixture when wearing and removing the aligner, and when the aligner is worn.

In addition to the above two connecting bodies, more connecting bodies can be provided on the basis of the above example, and the multiple connecting bodies can be located on the same side or different sides of the teeth. During and after wearing the dental appliance to the jaw, the connecting part does not contact with the orthodontic fixture", and at the same time "during the use of the dental appliance, the connecting part does not generate force with the teeth located between the adjacent sub-shells" role".

In the above implementation structure, the connecting portion includes one or both of the labial/buccal side portion, the lingual side portion, and the occlusal surface portion, and the portions of the connecting portion located on the same side as the bracket are located above the bracket. As an alternative embodiment, the connecting part can also be designed to include a lip/buccal side part, an occlusal surface part and a lingual side part, wherein the connecting part is only arranged above and above the orthodontic fixture on the side where the orthodontic fixture is provided. /or two sides, see an example shown in FIG. 4A and FIG. 4B . The structure of the shell-like aligner 402 in FIG. 4A is shown in detail in FIG. 4B , wherein the connecting portion 405 includes a buccal side part, an occlusal surface part and a lingual side part, and the above three parts are respectively related to the outer surface and the occlusal surface of the corresponding positions on the teeth. , the distance between the inner surfaces is greater than or equal to 0, and the buccal side part Including the part above and on both sides of the orthodontic fixture, excluding the part below the orthodontic fixture.

The above example can completely avoid the orthodontic fixation appliance installed on the surface of the teeth, and has a high wearing convenience, so that the orthodontic force of the fixed orthodontic treatment can be better exerted during the correction process. The firmness of the dental instruments enables the dental instruments to be better applied to the corresponding orthodontic plan, and the orthodontic progress of the entire dentition remains consistent under controllable conditions.

All the examples mentioned above are to install the brackets on the buccal surface of the posterior teeth. Those skilled in the art can know that, on the basis of the above examples, if the brackets are installed on the posterior teeth On the lingual surface of the ligament, the connector on the lingual side can be correspondingly shifted to the opposite buccal position, as shown in FIG. Avoid contact between the shell-shaped aligner and the orthodontic fixture when the aligner is worn.

All the examples mentioned above are to install the brackets on the teeth in the posterior area. Those skilled in the art can know that, on the basis of the above examples, if the brackets are installed on the teeth in the anterior area, Because the occlusal surface of the anterior teeth is narrow, the connecting part usually does not include the occlusal surface. As shown in FIG. 5B , the connecting part 504 is located on the lingual side of the anterior teeth to ensure that the patient wears and removes the shell-shaped aligner. Avoid contact between the shell-shaped aligner and the orthodontic fixture while wearing the aligner.

In addition, the above embodiments are all cases where one set of orthodontic fixtures are provided, while FIG. 6 shows the case where two groups of orthodontic fixtures are provided. As shown in FIG. 6 , two sets of orthodontic fixtures are provided on the patient's teeth, wherein one set of orthodontic fixtures 601 is located on the three left teeth of the patient, and the other set of orthodontic fixtures 602 is located on the right three teeth of the patient tooth, the shell The shape corrector includes three sub-housings 603, 604, 605, the sub-housing 603 and the sub-housing 604 are connected by a first connecting part 606, and the sub-housing 603 and the sub-housing 605 are connected by a second connecting part 607 connect. Both the first connecting portion 606 and the second connecting portion 607 shown in FIG. 6 include a connecting body located on the lingual side. In an alternative embodiment, the first connecting portion 606 and the second connecting portion 607 can also refer to the aforementioned embodiments. Arrangements or modifications are made on the basis of the foregoing embodiments.

On the basis of the foregoing embodiments, those skilled in the art can easily imagine the shapes and structures of dental instruments including more groups of orthodontic fixtures, which will not be described in detail here.

Based on the same creative concept, the present invention also provides a shell-shaped orthodontic appliance for use with an orthodontic fixture, which includes a shell, and the shell includes at least two sub-shells and a connecting portion connecting the sub-shells; Each sub-housing includes one or more cavities capable of accommodating teeth, and at least a part of the cavities is designed to reposition the accommodated teeth without orthodontic fixtures installed; the connecting portion connects adjacent sub-housings; During and after wearing the shell-shaped dental appliance to the jaw, the connecting part does not contact the orthodontic fixture; during the use of the shell-shaped appliance, the connecting part does not contact the teeth located between the adjacent sub-shells. generating force.

For the design principles, design ideas and structural design of the shell-shaped aligner here, reference may be made to the aforementioned design of the shell-shaped aligner in dental instruments.

This creation also provides an exemplary manufacturing method for the above-mentioned shell-shaped orthodontic device. The manufacturing method adopts the process of hot pressing film forming to manufacture the shell-shaped orthodontic device, including the following steps: S1. Obtaining the initial dental model: obtaining any orthodontic treatment in the orthodontic plan The digital dental model of the step is used as the initial dental model; any orthodontic step in the treatment plan uses orthodontic fixtures and shell-like appliances The orthodontic fixture is used to relocate the teeth on which the orthodontic fixture is installed, including two or more brackets fixed on different teeth and fasteners installed on the brackets; S2. Digital jaws Design of the model: According to the design of the connecting part in the shell-shaped appliance, a preset connecting part model was designed on the teeth with the orthodontic fixture installed in the initial dental model, and a digital dental jaw including the preset connecting part model was obtained. Model; S3. Manufacture of a solid dental model: Based on the digital dental model including the preset connecting part model, the solid dental model including the preset connecting part is produced by the additive manufacturing process; S4. Hot pressing film: The shell-like aligner including the preset connecting part is obtained by hot pressing the film on the solid dental model; S5. Cutting: cutting along the gum line or adjacent to the gum line on the shell-like aligner including the preset connecting part to remove the redundant part, The part corresponding to the tooth on which the orthodontic fixture is installed is cut and removed, the cut shell-shaped orthodontic appliance includes at least two sub-shells, and the preset connecting part is cut and shaped into a connecting part, so that the connecting part is connected to the adjacently arranged Sub-housing; in the process of wearing the shell-shaped dental appliance to the jaws and after wearing, the connecting part is not in contact with the orthodontic fixture; during the use of the shell-shaped appliance, the connecting part and the adjacent sub-housing are in contact with each other. The teeth in between do not exert force.

In the above manufacturing method, step S5 adopts laser cutting or mechanical cutting.

Taking the above-mentioned shell-shaped orthodontic device shown in FIG. 2B as an example, the manufacturing method for manufacturing the shell-shaped orthodontic device by using a hot-pressing film forming process includes the following steps: S1. Obtain a digital dental model of any orthodontic step in the orthodontic plan As the initial dental and jaw model, any orthodontic step in the orthodontic plan is implemented with a set of orthodontic fixtures and shell-like aligners; S2. As shown in FIG. 7 , according to the design of the required connection part in the shell-shaped appliance, a preset connection part model 702 is designed on the tooth 701 in which the orthodontic fixture is installed in the initial dental model, and a preset connection part model 702 is obtained. The digital dental and jaw model 700 of the part model; wherein, the preset connection part model 702 is a convex model, which includes a convex surface located on the occlusal surface, and the convex surface corresponds to the part of the orthodontic fixture in the buccal-lingual direction. The width is less than or equal to the width of the occlusal surface of the corresponding tooth on which the orthodontic fixture is installed, and the distance between the convex surface and the highest point of the crown of the tooth 701 on which the orthodontic fixture is installed is greater than or equal to 0; S3. Production: Based on the digital dental model including the preset connection part model, the solid dental model including the preset connection part is produced by the additive manufacturing process; S4. Hot pressing film: hot pressing the film on the solid dental and jaw model Obtaining a shell-like appliance including a preset connecting part; S5. Cutting: cutting along the gum line or adjacent to the gum line on the shell-like appliance including the preset connecting part to remove the redundant part, and cutting the shell including the preset connecting part The part of the tooth corresponding to the orthodontic fixture installed on the orthodontic appliance is cut and removed. The cut shell-shaped orthodontic appliance includes two sub-shells, and the preset connecting part is cut and formed into a connecting part; the connecting part connects the adjacent sub-shells case.

In other embodiments, the preset connection part model can be designed according to the tooth surface. In the above step S2, the distance between each point on the designed convex surface and the point on the occlusal surface of the tooth at the corresponding position is one The preset value greater than 0 can obtain a convex surface that is basically consistent with the shape of the occlusal surface, and then a connecting portion 804 as shown in FIG. The faces are basically the same.

In the above-mentioned manufacturing method of the shell-shaped orthodontic appliance provided by this creation, the design principle of the preset connecting part model is: to ensure that the connecting part formed after cutting is in the process of wearing the shell-shaped dental orthodontic appliance to the jaw and after wearing it. There is no contact with the orthodontic fixture, and during the use of the dental appliance, the connecting part does not generate force with the teeth located between the adjacent sub-shells. The specific shape of the connecting part can refer to the aforementioned shell-shaped orthodontic appliance in dental appliances. The design of the connecting part on the device, or the deformation based on it.

It should be noted that the above embodiments can be freely combined as required. The above is only the preferred embodiment of the present creation. It should be pointed out that for those skilled in the art, without departing from the principle of the present creation, several improvements and modifications can also be made. These improvements and modifications are also It should be regarded as the scope of protection of this creation.

100: Dental Instruments

101: Orthodontic Fixtures

101a: Brackets

101b: Correction wire

102: Shell Corrector

105: Connector

900: Patient Teeth

Claims (20)

A dental appliance, comprising: at least one orthodontic fixture for repositioning a tooth on which the orthodontic fixture is installed, including more than two brackets fixed on different teeth and a fastener mounted on the brackets. Firmware; at least one shell-like orthodontic device, the shell-like orthodontic device includes a shell, the shell includes at least two sub-shells and a connecting portion connecting the sub-shells; the sub-shells include one or more sub-shells capable of a cavity containing teeth, at least a portion of which is designed to relocate the teeth contained therein without the orthodontic fixture installed; wherein the orthodontic fixture is mounted between the adjacent sub-housings On at least part of the teeth, the connecting parts connect the adjacent sub-shells; in the process of wearing the shell-shaped appliance to the jaw and after wearing, the connecting parts do not contact the orthodontic fixture ; During the use of the dental appliance, the connecting portions and the teeth located between the adjacent sub-shells do not generate force. The dental appliance of claim 1, wherein during use of the dental appliance, the connecting portions do not contact teeth located between the adjacent sub-housings. The dental appliance of claim 1, wherein during use of the dental appliance, the connecting portions are in contact with the teeth between the adjacent sub-housings but do not generate force. The dental appliance of claim 1, wherein the connecting portions and the orthodontic fixture are arranged on the same side or different sides of the teeth in the buccolingual or labiolingual direction. The dental appliance as claimed in claim 4, wherein when the connecting parts and the orthodontic fixture are arranged on the same side of the teeth, the connecting parts are not provided with any solid structure below the orthodontic fixture. The dental appliance of claim 1, wherein the brackets are mounted on the labial side of the teeth in the anterior region, and the connecting portions include a lingual side portion and do not have a labial side portion. The dental appliance of claim 1, wherein the brackets are mounted on the buccal side of the teeth in the posterior region, and the connecting portions include a lingual side portion and/or an occlusal side portion, and no buccal side portion. The dental appliance of claim 1, wherein the brackets are mounted on the lingual side of the teeth in the anterior region, and the connecting portions include a labial side portion and no lingual side portion. The dental appliance of claim 1, wherein the brackets are mounted on the lingual side of the teeth in the posterior region, and the connecting portions include buccal and/or occlusal portions and do not include lingual portions. The dental appliance of claim 1, wherein the connecting portions include a labial/buccal side portion and a lingual side portion, and the connecting portions are only provided on the orthodontic fixture on the side on which the orthodontic fixture is mounted above. The dental appliance of claim 1, wherein the connecting portions include a labial/buccal side portion, an occlusal surface portion, and a lingual side portion, and the connecting portions are provided only on the orthodontic fixture on the side on which the orthodontic fixture is installed. Above and/or on both sides of the orthodontic device. The dental instrument of claim 1, wherein the connecting portions include one or more connecting bodies, and the connecting bodies connect the adjacent sub-housings. The dental instrument of claim 12, wherein the connecting portions comprise a plurality of connecting bodies, at least two of the connecting bodies being located on the same or different sides of the labial/buccal side, the lingual side, and the occlusal surface. The dental appliance as claimed in claim 12 or 13, wherein the connectors are located on the labial/buccal or lingual side, and the width of the portion of the connectors in the gingival-maxillary direction corresponding to the orthodontic fixture is less than or equal to the corresponding installation The crown height of the teeth of the orthodontic fixture. The dental appliance of claim 14, wherein the connectors are located on the labial/buccal side, and the minimum distance between the connectors and the outer surface of the tooth on which the orthodontic fixture is mounted is greater than or equal to 0. The dental appliance according to claim 14, wherein the connecting bodies are located on the lingual side, and the minimum distance between the connecting bodies and the inner surface of the tooth on which the orthodontic fixture is installed is greater than or equal to 0. The dental appliance according to claim 12 or 13, wherein the connecting bodies are located on the occlusal surface, and the width of the parts of the connecting bodies in the bucco-lingual direction corresponding to the orthodontic fixture is less than or equal to the width of the corresponding orthodontic fixture the width of the occlusal surface of the teeth. The dental appliance according to claim 17, wherein the shapes of the connecting bodies are substantially consistent with the occlusal surfaces of the corresponding teeth on which the orthodontic fixture is installed. The dental appliance of claim 17, wherein the minimum distance between the connecting bodies and the highest point of the crown of the tooth on which the orthodontic fixture is installed is greater than or equal to 0. A shell-shaped orthodontic device for use in the dental instrument according to any one of claims 1 to 19, which mainly includes at least one shell, the shell including at least two sub-shells and a connection connecting the sub-shells the sub-housings include one or more cavities capable of accommodating teeth, and at least a portion of the cavities are designed to relocate the orthodontic fixture-free teeth accommodated therein; the connecting parts connect the The sub-shells arranged adjacently; in the process of wearing the shell-shaped appliance to the jaw and after wearing, the connecting parts do not contact the orthodontic fixture; during the use of the shell-shaped appliance, the The iso-connections do not exert force with the teeth located between the adjacent sub-shells.

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