WO2021246495A1 - マウスピース型可撤式矯正装置 - Google Patents
マウスピース型可撤式矯正装置 Download PDFInfo
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- WO2021246495A1 WO2021246495A1 PCT/JP2021/021271 JP2021021271W WO2021246495A1 WO 2021246495 A1 WO2021246495 A1 WO 2021246495A1 JP 2021021271 W JP2021021271 W JP 2021021271W WO 2021246495 A1 WO2021246495 A1 WO 2021246495A1
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- tooth
- orthodontic
- tooth surface
- elastic body
- occlusal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/36—Devices acting between upper and lower teeth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C2201/00—Material properties
- A61C2201/007—Material properties using shape memory effect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
Definitions
- the present invention relates to a mouthpiece type removable orthodontic device for moving teeth in the field of orthodontic dentistry.
- a bracket is attached to the surface of the tooth and the bracket is used.
- the mainstream is a multi-bracket treatment method that aims to move teeth by ligating and attaching an elastic wire and sliding on a strong wire.
- the patient needs to spend a treatment period of 2 to 3 years with a fixed orthodontic device such as a bracket or a wire attached in the oral cavity. Therefore, food residue tends to accumulate around the device attached to them, and there is a risk of suffering from tooth decay and gingival inflammation, the attachment can be seen when laughing or talking, and inconvenience and discomfort during eating and talking.
- Such issues are a heavy burden on the patient in starting and advancing the treatment.
- a plurality of mouthpieces (70 to 80 as an example) in which the teeth are moved little by little are created by CAD / CAM, and the teeth are replaced in order to move the teeth.
- a mouthpiece-type orthodontic treatment method is being put into practical use.
- the conventional mouthpiece type removable orthodontic appliance can solve the problems pointed out in the multi-bracket, it applies the necessary orthodontic force firmly and efficiently and accurately moves the teeth to enhance the therapeutic effect. There is a lot of room for improvement.
- the conventional mouthpiece type orthodontic appliance is thin and made of a uniform material, distortion and distortion occur at the center (the part that covers the occlusal surface of the tooth) and the end (the edge that covers the cervical part) of the device.
- the amount of deformation is different, and the elastic force, that is, the applied straightening force is different.
- it is difficult to continuously apply sufficient corrective force to the edge portion because it deforms as it is repeatedly attached and detached.
- the conventional mouthpiece type orthodontic device covers the entire occlusal surface of the tooth, the position where the upper and lower mouthpiece type orthodontic devices come into contact, or the facing tooth comes into contact with either the upper or lower mouthpiece type orthodontic device.
- the present invention is a new mouthpiece type that can apply orthodontic force to the tooth to be moved via the tooth surface pad and accurately apply sufficient orthodontic force to each tooth in the removable orthodontic device.
- the purpose is to create a removable orthodontic appliance.
- the present invention is a mouthpiece type orthodontic device based on a predicted tooth row after movement created from digital three-dimensional information of the patient's tooth row morphology, which is made of an elastic material having desired elasticity and moves the tooth to be moved. It is equipped with a pair of tooth surface pads that fit the crown tooth surface in the posterior position and state and wrap the anterior-posterior (lip tongue) or lateral (buccal tongue) around the crown, and the tooth before movement is the tooth surface. By sandwiching it with a pad, it fits the moving member that moves the tooth to the position and state after movement and corrects it, and the crown tooth surface of the tooth that does not move, and it fits the crown front and back (lip tongue) or sideways around the crown.
- a mouthpiece-type removable orthodontic apparatus comprising a base made of a non-elastic material to which the moving member and the gripping member can be attached.
- a tooth surface pad that transmits force to the tooth surface, it develops an orthodontic force that pinches the tooth and grips and moves three-dimensionally.
- elastic materials and leaf springs that are standardized for each patient, it is possible to move the teeth individually and three-dimensionally.
- the teeth By sandwiching the teeth with a pair of tooth surface pads, the teeth can be grasped and the teeth can be moved in a three-dimensional position and direction. At that time, by selecting and combining an elastic material and a spring plate, it is possible to adjust each tooth so as to exhibit a necessary and sufficient orthodontic force via a tooth surface pad. In addition, a continuous and stable orthodontic force due to an elastic material or a spring plate can be accurately applied to the teeth, and three-dimensional tooth movement and grip can be realized.
- the leaf spring that connects to the tooth surface pad can be cooled and attached to the oral cavity, and the shape will recover at body temperature so that it fits the tooth surface firmly. Therefore, even if the tooth has various uneven shapes or the dentition shape, the tooth surface pad that firmly covers the tooth surface three-dimensionally can be utilized without being restricted by making the device removable.
- the position and shape of the occlusal surface that the mouthpiece-type orthodontic appliance contacts to a physiologically correct position, it is possible to prevent unnecessary orthodontic force from being applied to the mouthpiece-type orthodontic appliance, and to move up and down with an appropriate occlusal force.
- the position of the dentition and the position of the lower jaw can be maintained at the proper position during orthodontic treatment.
- FIG. 1 is a perspective view of a mouthpiece type removable orthodontic appliance 1 according to an embodiment.
- FIG. 2 is a schematic diagram showing a cut surface end face cut along II-II of FIG.
- FIG. 3 is a schematic diagram showing a modified example of the moving member 30 attached to the base portion 10 shown in FIG.
- FIG. 4 is a schematic view of the two central incisors of the maxilla, which are the teeth to be moved, viewed from the lower surface side, and the position and state before movement (solid line) and the position and state after movement (broken line). It is a figure which shows.
- FIG. 5 is a schematic diagram showing the relationship between the two central incisors of the upper jaw and the tooth surface pad after movement.
- FIG. 5 is a schematic diagram showing the relationship between the two central incisors of the upper jaw and the tooth surface pad after movement.
- FIG. 6 is a schematic diagram showing the relationship between the two central incisors of the upper jaw and the tooth surface pad before movement.
- FIG. 7 is a perspective view of the mouthpiece type removable orthodontic appliance 2 according to another embodiment.
- FIG. 8 is a schematic diagram showing a cut surface end face cut along II-II of FIG. 7.
- 9 (A) is a schematic diagram showing the tooth surface pad 310 on the anterior (lip) side of the crown in FIG. 8, and
- FIG. 9 (B) is a tooth surface pad on the posterior (tongue) side of the crown in FIG. It is a schematic diagram which shows 320.
- FIG. 10 is a schematic diagram showing a modified example of the cut surface end surface of the orthodontic appliance 2 shown in FIG. FIG.
- FIG. 11 is a schematic diagram showing a cut surface end face cut along III-III of FIG. 7.
- FIG. 12 is a side view of the mouthpiece type removable orthodontic appliance 3 and 4 according to still another embodiment.
- FIG. 13 is an illustrated diagram of the mouthpiece type removable orthodontic apparatus 3 and 4 shown in FIG. 12 as viewed from the back side.
- 14A and 14B are views showing an embodiment in which an optional member is incorporated in a maxillary orthodontic appliance 3, where FIG. 14A is a side view of the orthodontic appliance 3, FIG. 14B is a rear view of the orthodontic appliance 3, and FIG. Is a perspective view of the orthodontic appliance 3 with the side cover attached.
- FIG. 15 is a side view showing an embodiment in which another optional member is incorporated in the maxillary orthodontic appliance 3.
- FIG. 16 is a view showing a modified example of the removable mouthpiece type orthodontic appliance 3, and is a side view of the orthodontic appliance 3M.
- FIG. 17 is a schematic side view of the occlusal surface member 90'which can be replaced with the occlusal surface member 90.
- One embodiment of the present invention is a mouthpiece type orthodontic device based on a predicted dentition after movement created from digital stereoscopic information of the patient's dentition morphology, which is made of an elastic material having desired elasticity and moves. It is equipped with a pair of tooth surface pads that fits the position and state of the desired tooth after movement, and wraps the front and back (lip tongue) or side (buccal tongue) around the crown, and the tooth before movement. By sandwiching the tooth with the tooth surface pad, it is compatible with the moving member that moves the tooth to the position and state after movement and corrects it, and the crown tooth surface of the non-moving tooth.
- a mouthpiece-type removable orthodontic apparatus having a U-shaped (horseshoe) shape along the line and a base portion made of a non-elastic material to which the moving member and the gripping member can be attached.
- a moving portion and a grip portion sandwiching individual teeth with a tooth surface pad made of an elastic material such as silicon having a desired elastic force, and a grip portion thereof, and individual moving portions and grip portions thereof are attached. It has a two-layer structure with a base made of non-elastic material.
- the tooth surface pad mainly wraps the outside and inside of the crown (that is, the lip-lingual surface or the buccal-lingual surface), and covers the teeth as wide as possible, including the mesio-distal surface, as long as it does not interfere with the movement of the teeth. By wrapping it, the teeth can be moved and grasped three-dimensionally.
- the tooth surface pad covers and expands to the incisal end of the crown and the occlusal surface to apply a reduction force from the occlusal surface and increase the support (grip) force of the device against the occlusal force. Can be done.
- the force (reaction) that antagonizes the orthodontic force that moves the tooth causes distortion and deformation in the entire device, and sufficient orthodontic treatment is sufficient for the tooth that wants to move.
- the force may not reach, but rather, the reaction may cause unwanted tooth movement to the tooth that is adjacent to the moving tooth and that you do not want to move.
- a mouthpiece type straightening device is configured by providing a base portion as a solid base and having a two-layer structure that supports a moving member and a gripping member. This allows different orthodontic forces and directions tailored to the needs of each tooth to be applied to each tooth individually. In addition, the reaction of the orthodontic force applied to each tooth can be absorbed at the base portion, and the orthodontic force applied to each tooth can be minimized from spreading to the adjacent tooth.
- the target tooth can be reliably moved to a desired three-dimensional position and direction.
- Two sets of tooth surface pads may be created for each tooth so that they can be attached to and detached from the base, or the tooth surface pads can be attached to and detached from the base separately without forming a set of two. good.
- a set of a plurality of connected tooth surface pads may be created for a plurality of adjacent dentitions that do not move to form a gripping member.
- FIG. 1 is a perspective view of a mouthpiece type removable orthodontic appliance 1 according to an embodiment.
- this orthodontic device 1 is exemplified as a device to be attached to the permanent dentition of the maxilla.
- the correction device 1 includes a base portion 10 and a mounting portion 20.
- the base portion 10 is formed of a metal such as a hard resin or titanium, that is, an inelastic material.
- the base portion 10 is a thin plate having a U-shape (horseshoe shape) in a plan view along the shape of the permanent dentition of the maxilla on the occlusal surface side.
- the upper surface of the base portion 10 is a mounting surface
- the lower surface is an occlusal surface.
- the mounting portion 20 is mounted on the mounting surface which is the upper surface.
- the mounting portion 20 includes moving members 30, 40 and gripping members 50, 60.
- the moving members 30 and 40 are adapted to the upper central incisors (upper right No. 1 and upper left No. 1), respectively, and the gripping members 50 and 60 are the remaining teeth (upper right).
- the case of conforming to the right 2 to 8 and the upper left 2 to 8) will be described as an example.
- the gripping member 60 does not have a configuration in which a pair of independent tooth surface pads are provided for each of the seven teeth No. 2 to No. 8 on the upper left, but any plurality of teeth.
- a pair of teeth in which adjacent teeth are connected and the three are integrated. It may be configured to include a face pad.
- the gripping member 50 may have the same configuration.
- FIG. 2 is a schematic diagram showing a cut surface end face cut along II-II of FIG.
- the moving member 30 corresponding to the upper central incisor (upper right No. 1) includes a pair of tooth surface pads 31 and 32 that fit the upper right No. 1 crown tooth surface. I'm out. That is, a pair of tooth surface pads 31, 32, a tooth surface pad 31 that wraps the front (labial side) and a tooth surface pad 32 that wraps the back (lingual side) around the first crown on the upper right. Includes.
- the pair of tooth surface pads 31 and 32 may be associated with the crown shape of the tooth so as to wrap the tooth as widely as possible, including the mesio-distal surface of the tooth, respectively.
- the tooth surface pads 31 and 32 may be made of a silicon resin as an example.
- the pair of tooth surface pads 31 and 32 are supported by the support members 33 and 34 so as to match the position and state of the crown tooth surface of the tooth to be moved (upper right No. 1) after movement.
- the support members 33 and 34 are provided with mounting portions 35 and 36.
- the tooth surface pads 31 and 32 are attached to the base portion 10 by the support members 33 and 34 and the attachment portions 35 and 36 so as to be in positions uniquely determined in three dimensions.
- the support members 33 and 34 may be integrally formed with the tooth surface pads 31 and 32, respectively. Further, the support members 33 and 34 may be made of silicon resin as an example.
- the support member that supports the pair of tooth surface pads 31 and 32 can be one support member 37 that commonly supports the tooth surface pads 31 and 32.
- the support member 37 is provided with a mounting portion 38
- the base portion 10 is provided so that the tooth surface pads 31 and 32 are sterically determined by the support member 37 and the mounting portion 38. It is attached to.
- FIG. 4 is a schematic view of the upper right TR1 of the upper central incisor and the upper left TL1 of the upper central incisor, which are the teeth to be moved in this example, as viewed from the lower surface side.
- TR1 and TL1 shown by solid lines indicate the positions and states of the upper central incisors (upper right No. 1 and upper left No. 1) before movement, and TR1'and TL1'shown by broken lines are upper. The position and state of the central incisors (upper right No. 1 and upper left No. 1) after movement are shown.
- a pair of tooth surface pads 31 and 32 are provided so as to match the position and state of the crown tooth surface of the tooth to be moved (upper right No. 1) after movement.
- a pair of tooth surface pads 41 and 42 are provided so as to match the position and state of the crown tooth surface of the tooth to be moved (upper left No. 1) after movement.
- the tooth surface pads 31 and 32 fit into the upper right No. 1 TR1'after movement, and the tooth surface pads 41 and 42 fit into the upper left No. 1 TL1'after movement.
- the upper right No. 1 TR1 is sandwiched between the tooth surface pads 31 and 32, and the upper left No. 1 TL1 is sandwiched between the tooth surface pads 41 and 42, and the tooth position after the movement.
- the orthodontic force CF that moves the teeth three-dimensionally so as to be in a state continues to be applied.
- a moving model (a pair of tooth surface pads) is gradually provided.
- Moving members including) may be created. That is, by creating a moving member including a pair of tooth surface pads according to the position and state of the crown after moving in each stage and replacing it with the base portion 10, the orthodontic force can be adjusted more appropriately. It may be a device for stepwise moving the tooth to be moved to a desired position / state.
- the moving member 30 may be configured to include an elastic material.
- the moving member 30 is made of a material mainly composed of silicon, and the tooth surface pads 31 and 32 and the mounting portions 35, 36 and 38 are formed with relatively low elasticity, and the support members 33 and 34 are formed.
- the 37 portions may be formed to have relatively high elasticity and high restoring force.
- the moving member 30 is not entirely made of the same material, but the tooth surface pads 31, 32 parts, the mounting parts 35, 36, 38 parts and the support members 33, 34, 37 parts are made of different materials. It may be integrated.
- the moving member 40 may also have a configuration containing the same elastic material as the moving member 30.
- the gripping members 50 and 60 are suitable for the upper right Nos. 2 to 8 and the upper left Nos. 2 to 8, but the tooth surface surrounding the outside (labial side or buccal side) around the crown of each tooth.
- a pair of tooth surface pads (a pair) of a pad and a tooth surface pad that wraps the inside (lingual side) may be provided independently, or a tooth that wraps the outside (labial side or buccal side).
- the surface pad and the tooth surface pad that wraps the inside (lingual side) may be connected between adjacent teeth.
- FIG. 1 shows an example of a connected configuration.
- the mouthpiece type removable orthodontic appliance according to this embodiment may be directly created by CAD / CAM from the digital stereoscopic information of the patient's dentition form. Further, it may be created on a predicted dentition model after movement created by CAD / CAM from the three-dimensional information of the patient's dentition morphology.
- a second embodiment of the present invention is a mouthpiece type orthodontic device based on a predicted tooth row after movement created from digital stereoscopic information of the patient's tooth row morphology, and is a position and state of the tooth to be moved after movement. It is equipped with two (pair) tooth surface pads that fit the crown and wrap the anterior-posterior (lip tongue) or lateral (buccal tongue) around the crown, and the tooth before movement is covered with the tooth surface pad. By sandwiching it, it is compatible with the moving member that moves the tooth to the position and state after movement and corrects it, and the crown tooth surface of the non-moving tooth.
- the pad is supported in a predetermined positional relationship by an elastic body of an alloy material including a shape memory alloy having elasticity, and the straightening force of the moving member can be adjusted by selecting or replacing the elastic body. It is a thing. Further, it has a U-shaped (horseshoe) shape that follows the shape of the patient's dentition, and has a base made of an inelastic material to which the moving member and the gripping member can be attached.
- the tooth surface pad is formed of a non-elastic material, and an alloy material containing a shape memory alloy capable of adjusting the corrective force and the gripping force applied to the tooth surface pad sandwiching each tooth in a desired direction and amount. It is expressed by the elastic body of. That is, like a washing scissors, two tooth surface pads are connected by a metal coil or a spring, and the tooth is sandwiched by the elastic force of the metal. Two pads adhere to the tooth surface by selecting an elastic body according to the required orthodontic force from a plurality of existing metal elastic bodies whose orthodontic force that can be expressed is accurately specified in advance. As such, it is possible to apply sufficient gripping force and orthodontic force necessary for firmly pinching, and more accurate and reliable three-dimensional movement of teeth and stable gripping (supporting and maintenance) of the device become possible.
- the tooth surface pad wraps the tooth as widely as possible, including the lip-tongue surface (or buccal-tongue surface) and the mesio-distal surface, so that the tooth can move three-dimensionally, as long as it does not interfere with the movement of the tooth. .. Further, if necessary, each tooth surface pad can cover and expand to the incisal end and the occlusal surface portion to apply compression from the occlusal surface and increase the support (grip) force of the device against the occlusal force.
- the tooth surface pad By changing the shape and thickness and replacing them, the straightening force can be increased and the moving direction can be adjusted.
- an elastic body made of a material that can change its shape depending on the temperature, such as a shape memory alloy, is used to hold the tooth surface pad and develop orthodontic force, so that the tooth surface pad can be undercut at the ridge of the tooth. Including, it can be widely wrapped, and it is possible to apply a three-dimensional orthodontic force to the teeth and move or grip them accurately.
- the device is cooled with cold water to increase the applicability and degree of freedom of the shape of the elastic body of the shape memory alloy material, so that the device can be easily attached / detached regardless of the tooth arrangement.
- each elastic body made of shape memory alloy After wearing, at the body temperature in the oral cavity, each elastic body made of shape memory alloy returns to a predetermined position and shape, exerts a predetermined corrective force and gripping force, and the device is firmly gripped by the gripping portion, and the oral cavity is firmly gripped. It is stably maintained in a predetermined position, and even if a desired correction force is applied, the reaction does not cause the device to come off. When removing the device, it can be easily removed by including cold water in the mouth.
- the grip portion By changing the set temperature of the elastic body made of shape memory alloy to be used between the grip portion and the moving portion and setting the elastic body of the grip portion to return to a predetermined shape faster in the oral cavity, the grip portion can be used.
- the device is first fixed in place and then the moving part wraps the tooth, reducing the error in the mounting position of the device and allowing the corrective force to be applied to the tooth to be moved to be applied more accurately and accurately.
- the pad end edge on the cervical part which is attached at the time of attachment / detachment, has a slope shape that makes it easy to attach / detach. It is also possible to create an elastic body made of a shape memory alloy in combination with an elastic body made of an alloy used in ordinary straightening. For example, by using a normal alloy elastic body in the grip portion, it is easy to specify the mounting position and direction at the time of attachment / detachment, and it can be used as a attachment / detachment guide for the device.
- the teeth can be moved and gripped through the tooth surface pad that sufficiently covers each tooth without any restrictions related to the attachment / detachment of the device due to the prosperity or orientation of the teeth, and the movement / gripping force is exhibited.
- an elastic body made of an alloy containing a shape memory alloy as the material, a removable straightening device that has proper and sufficient gripping force and can be smoothly attached and detached. Can be realized.
- FIG. 7 is a perspective view of the mouthpiece type removable orthodontic appliance 2 according to the second embodiment.
- This orthodontic device 2 is exemplified as a device to be attached to the permanent dentition of the maxilla as an example.
- the straightening device 2 basically includes a base portion 10 and a mounting portion 20 as in the straightening device 1 described with reference to FIG. 1.
- the base portion 10 is formed of a metal such as a hard resin or titanium, that is, an inelastic material.
- the base portion 10 is a thin plate having a U-shape (horseshoe shape) in a plan view along the shape of the permanent dentition of the maxilla on the occlusal surface side.
- the upper surface of the base portion 10 is a mounting surface, and the lower surface is an occlusal surface.
- the mounting portion 20 is mounted on the mounting surface which is the upper surface.
- the mounting portion 20 includes moving members 30, 40 and gripping members 50, 60.
- the moving members 30 and 40 are adapted to the upper central incisors (upper right No. 1 and upper left No. 1), respectively, and the gripping members 50 and 60 are the remaining teeth (upper right No. 1 and upper left No. 1), respectively.
- the gripping members 50 and 60 are the remaining teeth (upper right No. 1 and upper left No. 1), respectively.
- the case of conforming to the upper right Nos. 2 to 8 and the upper left Nos. 2 to 8) will be described.
- the gripping member 60 does not have a configuration in which a pair of independent tooth surface pads are provided for each of the seven teeth No. 2 to No. 8 on the upper left, but any plurality of teeth.
- a pair of teeth in which adjacent teeth are connected and the three are integrated. It may be configured to include a face pad.
- the grip portion 50 may have the same configuration.
- FIG. 8 is a schematic diagram showing a cut surface end face cut along II-II of FIG. 7.
- 9 (A) is a schematic diagram showing the tooth surface pad 310 on the front (lip surface) side of the crown in FIG. 8, and
- FIG. 9 (B) is the posterior (lingual) side of the crown in FIG. It is a schematic diagram which shows the tooth surface pad 320 of.
- the moving member 30 corresponding to the upper central incisor (upper right No. 1) is a set of two (pair) suitable for the upper right 1st crown tooth surface. Includes tooth surface pads 310, 320.
- One end of the metal elastic body 102 is fixed to the outer surface of the tooth surface pad 310 by the elastic body mounting portion 101. Further, the other end of the metal elastic body 102 is fixed to the base portion 10 by the elastic body mounting portion 103.
- the metal elastic body 102 is made of a pair of metal wires 102 having a symmetrical shape in the left-right direction.
- the pair of metal wires 102 may be formed with a buffer bent portion 102B that is bent so as to project laterally in the middle of the length direction and is returned to the original position.
- the metal elastic body 105 may be made of a pair of metal wires 105 having a symmetrical shape in the left-right direction, and may include a buffer bending portion 105B in the middle portion in the length direction thereof. ..
- Each tooth surface pad 310, 320 is supported by metal elastic bodies 102, 105 so as to be in a predetermined position and orientation with respect to the base portion 10. More specifically, each tooth surface pad 310, 320 is supported so as to correspond to the position, orientation and state of the upper right first crown after movement.
- the position of the crown after the tooth surface pads 310 and 320 are moved by the metal elastic bodies 102 and 105 in a state of being attached to the crown tooth surface of the first upper right. And the straightening force and the gripping force are constantly applied so as to be oriented. Therefore, it is possible to continue to apply appropriate orthodontic force and gripping force to the tooth to be moved (upper right No. 1) by the elasticity of the metal elastic bodies 102 and 105.
- the metal elastic bodies 102 and 105 are formed of an elastic body containing a shape memory alloy, and for example, by cooling the device 2 with cold water at the time of mounting, the metal elastic bodies are opened so as to open between the tooth surface pads 310 and 320.
- the 102 and 105 may be modified to facilitate mounting of the device 2 on the dentition. After wearing, the metal elastic bodies 102 and 105 may return to their original shapes at the body temperature in the oral cavity, and the tooth surface pads 310 and 320 may exert a predetermined orthodontic force and gripping force.
- the device When removing the device, for example, if the metal elastic bodies 102 and 105 can be deformed by including cold water in the mouth, the device can be easily removed.
- the moving member 30 may have metal elastic bodies 102 and 105 fixed to the base portion 10 by a common elastic body mounting portion 107.
- the same parts as those in FIG. 8 are marked with the same numbers, and duplicated description will be omitted.
- the metal elastic bodies 102 and 105 show an example composed of a pair of metal wires 102 and 105, respectively, but the present invention is not limited thereto.
- the metal elastic bodies 102 and 105 may be any as long as they elastically apply a straightening force and a gripping force to the tooth surface pads 310 and 320, and the form may be an elastic wire or a plate. It may be a spring-shaped plate, a coil spring-shaped body, or another form.
- the entire surface of the metal elastic body may be coated with a non-metal material so that the alloy portion is not exposed.
- the device can be made without any trouble for patients with metal allergies.
- a metal elastic body containing a shape memory alloy that is standardized according to various shapes, lengths, sizes, elastic forces, etc., and to the tooth surface pad and the base 10 based on the standard information. If the manufacturing method of designing the mounting position of the device 2 is adopted, the device 2 can be manufactured more easily.
- FIG. 11 is a schematic diagram showing a cut surface end face cut along III-III of FIG. 7.
- the gripping member 60 for gripping the upper left No. 6 is a pair of two that fits the crown tooth surface of the upper left No. 6.
- the tooth surface pad 610 is a pad that abuts on the upper left No. 6 from the outside (buccal side) and covers the outer crown tooth surface of the upper left No. 6.
- the tooth surface pad 620 is a pad that comes into contact with the upper left No. 6 from the inside (lingual side) and covers the inner crown tooth surface of the upper left No. 6.
- the tooth surface pads 610 and 620 are not independent single pads, but are on the adjacent upper left 7th (upper left second molar) crown tooth surface. It is connected to a matching tooth surface pad and a tooth surface pad that matches the crown tooth surface of the upper left No. 8 (upper left third molar).
- One end of the metal elastic body 601 is fixed to the outer surface of the tooth surface pad 610 by the elastic body mounting portion 603.
- the other end of the metal elastic body 601 is fixed to the base portion 10 by the elastic body mounting portion 604.
- one end of the metal elastic body 602 is fixed to the outer surface of the tooth surface pad 620 by the elastic body mounting portion 605, and the other end of the metal elastic body 602 is attached to the base portion 10 by the elastic body mounting portion 604. It is fixed.
- the metal elastic body 601 constantly applies an elastic force F inward (to the left in FIG. 11) to the tooth surface pad 610.
- the metal elastic body 602 constantly applies an elastic force F inward (to the right in FIG. 11) to the tooth surface pad 620. Therefore, the upper left 6th tooth in which the outer crown tooth surface and the inner crown tooth surface are sandwiched between the tooth surface pads 610 and 620 is securely and firmly formed by the tooth surface pads 610 and 620 at the implanting position. Is gripped by.
- the pair of tooth surface pads that sandwich the adjacent upper left 7th tooth is not provided with a metal elastic body, but the pair of tooth surface pads that sandwich the upper left 6th tooth. Since the elastic force F of 610 and 620 and the elastic force of the pair of tooth surface pads that sandwich the upper left 8th tooth are transmitted from the left and right, the pair of tooth surface pads that sandwich the upper left 7th tooth can also be used. A reliable and strong gripping force is generated.
- the teeth after movement are arranged at the position between the upper and lower jaws where the upper and lower dentitions mesh in the patient's oral cavity, and a predictive model is produced.
- the upper and lower dentition occlusal positions in the row are not always the correct jaw position and the relationship between the upper and lower jaws. This is because the position of the bite, that is, the position of the lower jaw may be displaced due to the incorrect dentition.
- the mouthpiece type orthodontic device since the device covers the occlusal surface of the tooth, premature contact usually occurs at the molar tooth portion. Moreover, the way of hitting may be different on the left and right. In this way, in the mouthpiece type orthodontic device that covers the entire dentition including the occlusal surface, the upper and lower devices are evenly in contact with the entire occlusal surface side at the physiological position, and the occlusal force is applied appropriately and evenly. That is usually difficult.
- the occlusal surface side contact position of the mouthpiece type orthodontic device is adjusted to a physiologically and functionally appropriate mandibular position, and the occlusal force is evenly applied to the entire surface of the device occlusal surface side contact surface. did.
- the occlusal of the physiological upper and lower dentition in the oral cavity or the occlusal acquisition that memorizes the contact positional relationship is performed.
- the physiological positional relationship is confirmed in the oral cavity, and the positional relationship between the upper and lower mouthpiece type orthodontic appliances is recorded at the upper and lower jaw relationship positions.
- Occlusion acquisition More specifically, when the occlusion is obtained, the thickness of the upper and lower mouthpiece type orthodontic appliance is taken into consideration, and the occlusion of the upper and lower dentition positions of the physiological lower jaw position in the opened state is obtained accordingly.
- the occlusal surface position where the facing surfaces of the upper and lower mouthpiece type orthodontic devices are in contact with each other (the upper and lower devices or one of the devices and the facing dentition).
- Contact position is set, and for example, when the device is mounted up and down, a maxillary facing surface portion and a mandibular facing surface portion are created and attached to the bases of the maxillary and mandibular devices, respectively.
- the upper and lower mouthpiece type orthodontic devices are brought into contact with each other on the upper and lower facing surfaces, so that the occlusal force is evenly applied to the entire upper and lower mouthpiece type orthodontic devices at the physiologically appropriate position of the lower jaw. It is possible to firmly suppress the reaction that antagonizes the orthodontic force, maintain the upper and lower devices in an appropriate position, and more reliably move the desired teeth.
- FIG. 12 is a side view of the removable mouthpiece type orthodontic appliance 3 and 4 according to the embodiment.
- This orthodontic appliance includes an orthodontic apparatus 3 attached to the permanent dentition of the upper jaw and an orthodontic apparatus 4 attached to the permanent dentition of the lower jaw.
- the maxillary orthodontic apparatus 3 basically includes the base portion 10 and the mounting portion 20 in the same manner as the orthodontic apparatus 1 described with reference to FIG. 1 and / or the orthodontic apparatus 2 described with reference to FIG. Includes.
- the configuration of the mounting portion 20 is the same as the configuration of each embodiment described above.
- the correction device 4 for the lower jaw is basically the same as the correction device 1 described with reference to FIG. 1 and / or the correction device 2 described with reference to FIG. 7, and the base portion 10D and the mounting portion 20D. Includes.
- the mounting portion 20D is configured to be mounted on the permanent dentition of the lower jaw for correction.
- FIG. 13 is a view of the orthodontic devices 3 and 4 shown in FIG. 12 as viewed from the back side (right side in FIG. 12).
- the engaging shape 13 (convex 14 and concave 15) in FIG. 13 is drawn with extreme exaggeration for ease of understanding.
- the feature of this embodiment is the engagement shape for both occlusal surfaces 11 and 12 to appropriately abut on the occlusal surface 11 of the base portion 10 and the occlusal surface 12 of the base portion 10D. 13 is formed.
- the engagement shape 13 may be a convex 14 formed on the occlusal surface 11 and a concave 15 formed on the occlusal surface 12 and engaged with the convex 14.
- the engagement shape 13 may be a step (step) 16 formed on the occlusal surface 11 and a step (step) 17 formed on the occlusal surface 12 and engaged with the step 16 (step).
- the engagement shape 13 has the mouthpiece type orthodontic devices 3 and 4 mounted in the actual oral cavity so that the orthodontic devices 3 and 4 abut (occlude) at a physiologically appropriate upper and lower jaw relationship position. ) Shall be the engagement shape 13 that obtains the occlusal acquisition and realizes the acquired occlusal acquisition.
- the mandible is guided to a desired position symmetrically in front of the original position.
- the mandible is guided anteriorly each time it engages, and it can be applied to a mandibular orthodontic treatment that promotes anterior growth of the mandible.
- FIG. 14 is a diagram showing an embodiment in which an optional member is incorporated in the maxillary orthodontic appliance 3 described with reference to FIGS. 12 and 13, and FIG. 14A is a diagram showing an embodiment in which the optional member is incorporated.
- 3 is a side view
- FIG. 14 (B) is a view of the straightening device 3 incorporating an optional member from the back side (rear surface)
- FIG. 14 (C) is a perspective view of the straightening device 3 with the side cover attached. Is.
- the base portion 10 of the straightening device 3 may be provided with a mounting portion 71 for mounting the side cover 70 as an optional member.
- a plurality of mounting portions 71 may be arranged on the outer surface of the base portion 10 at predetermined intervals.
- the mounting portion 71 may be configured by a button or a hook.
- the mounting portion 71 may be incorporated so as to be embedded in the outer surface of the base portion 10.
- a mounting portion 71 for mounting the side cover 70 may be provided as an optional member on the inner side surface and the rear side surface of the base portion 10 of the straightening device 3.
- the side cover 70 is a cover for covering both the outer surface (lip buccal side) or the inner side surface (lingual side) of the mounting portion 20 provided in the orthodontic appliance 3, or the outer surface and the inner side surface of the mounting portion 20. be.
- the side cover 70 is made of an elastic material such as silicon.
- the side cover 70 is provided with a mounted portion 72 in which the outer surface of the base portion 10 is fitted with the mounting portion 71 provided on the inner side surface or the like. By fitting the mounting portion 71 and the mounted portion 72, or by removing the fitting, the side cover 70 can be attached to and detached from the base portion 10 as needed.
- FIG. 14C is a schematic perspective view of the orthodontic appliance with the side cover 70 attached.
- the side cover 70 may cover all of the outer surface, the rear surface, and the inner surface of the mounting portion 20, and may cover either the outer surface or the inner surface. good.
- a partial side cover that covers a part of the outer surface or the inner surface of the mounting portion 20 may be used.
- the side cover 70 shown in the example of FIG. 14C has a pattern 73 drawn on its outer surface. As described above, the side cover 70 may be improved in design by being subjected to a picture, a pattern, or coloring.
- FIG. 15 is a side view showing an embodiment in which other optional members are incorporated in the maxillary orthodontic appliance 3 described with reference to FIG.
- the straightening device 3 shown in FIG. 15 is an example in which a hook 75 for hanging a rubber, a wire, a string, or the like is provided as an optional member at a predetermined position on the outer surface of the base portion 10.
- the hook 75 is used to suppress a reaction to remove the orthodontic device 3 when the orthodontic device 3 is attached to the maxillary dentition. That is, for example, by hooking one end side of the rubber on the hook 75 and hooking the other end side of the rubber on an external fixation device, a bone anchor, or the like, the reaction of trying to remove the straightening device 3 by the elastic force of the rubber is suppressed. It is a thing.
- FIG. 16 is a diagram showing a modified example of the removable mouthpiece type orthodontic apparatus 3 described with reference to FIGS. 12 and 13, and is a side view of the orthodontic apparatus 3M to be attached to the permanent dentition of the maxilla. ..
- the maxillary orthodontic appliance 3M is basically the same as the orthodontic appliance 1 described with reference to FIG. 1 and / or the orthodontic appliance 2 described with reference to FIG. , Base 10 and mounting 20 are included.
- the configuration of the mounting portion 20 is the same as the configuration of each embodiment described above.
- the base portion 10 has a mounting surface 10FU to which the mounting portion 20 is mounted and an occlusal surface 10FD on the opposite side of the mounting surface 10FU, and the occlusal surface 10FD has an occlusal surface member.
- the 90 is detachably attached.
- the occlusal surface member 90 is a thin plate body having a U-shape (horseshoe shape) that is equal to the base portion 10 in a plan view and follows the shape of the permanent dentition of the maxilla on the occlusal surface side.
- the upper surface 91 of the occlusal surface member 90 is formed so as to be in close contact with the occlusal surface 10FD of the base portion 10.
- the upper surface 91 of the occlusal surface member 90 and the occlusal surface 10FD of the base portion 10 are provided with mounting portions 93 and 18 for positioning the mounting positions of both and preventing misalignment or the like after mounting, respectively.
- a plurality of mounting portions 93 and 18 may be provided, respectively, and the mounting portions 93 and 18 may be concave and convex to be fitted to the concave, for example.
- the lower surface 92 of the occlusal surface member 90 is formed with an engagement shape 13 for the orthodontic appliance 3M to occlude at a physiologically appropriate position when the occlusal surface member 90 is attached to the base portion 10.
- the engagement shape 13 may be a convex, concave, or step (step) formed on the lower surface 92, as in the previous embodiment.
- the reason why the occlusal surface 10FD is provided on the base portion 10 and the occlusal surface member 90 is detachably attached to the occlusal surface 10FD is as follows.
- the jaw position collected in the oral cavity was incorrect, or if it was a non-physiological and addictive position, it may be necessary to correct it while observing the progress of use. In such a case, instead of recreating everything, I would like to recreate and replace only the occlusal surface.
- the positional relationship between the upper and lower mouthpiece device or the mouthpiece device and the opposing dentition model is newly occlusally collected, and based on the positional relationship, between the mouthpieces or between the mouthpiece and the dentition model. Recreate and replace the occlusal surface member that fills the space between the occlusal surfaces.
- the mounting part can be used as a reference no matter how many times it is remade, and the positional relationship between the mouthpiece base (occlusal surface 10FD) and the occlusal surface member 90 can be properly positioned. Get to the right position.
- FIG. 17 shows a schematic side view of the occlusal surface member 90'which can be replaced with the occlusal surface member 90.
- reference numerals that are the same as those in the previous embodiment are the same or corresponding parts, and duplicate description will be omitted.
- a mounting portion 71 for example, a button or a hook as an optional member or a hook 75 may be provided.
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Abstract
Description
[第1実施形態]
この発明の一実施形態は、患者歯列形態のデジタル立体情報から作成した移動後の予測歯列に基づくマウスピース型矯正装置であって、所望の弾力性を備えた弾性素材で作成され、移動したい歯の移動後の位置・状態の歯冠歯面に適合し、歯冠を中心に前後(唇舌)、又は、側方(頬舌)を包む一対の歯面パットを備え、移動前の歯を、前記歯面パットで挟むことで、当該歯を移動後の位置・状態に移動して矯正する移動部材と、移動しない歯の歯冠歯面に適合し、当該歯冠を中心に前後(唇舌)、又は、側方(頬舌)を包む一対の歯面パットを備え、その歯面パットで当該歯を挟み、当該歯をその状態で把持するための把持部材と、患者の歯列形状に沿ったU字(馬蹄)形状で、前記の移動部材及び把持部材を取り付けられる非弾性素材で作成された基底部と、を備えるマウスピース型可撤式歯列矯正装置である。
この発明の第2の一実施形態は、患者歯列形態のデジタル立体情報から作成した移動後の予測歯列に基づくマウスピース型矯正装置であって、移動したい歯の移動後の位置、状態の歯冠歯面に適合し、当該歯冠を中心に前後(唇舌)、又は、側方(頬舌)を包む2つ(一対)の歯面パットを備え、移動前の歯を歯面パットで挟むことで、歯を移動後の位置及び状態に移動させて矯正する移動部材と、移動しない歯の歯冠歯面に適合し、当該歯冠を中心に前後(唇舌)、又は、側方(頬舌)を包む2つ(一対)の歯面パットを備え、その歯面パットで歯を挟み、当該歯をその状態で把持するための把持部材とを備え、前記の移動部材の各歯面パットは、弾性を備えた形状記憶合金を含む合金素材の弾性体により、所定の位置関係で支持されていて、前記弾性体を選択したり付け替えたりすることで、移動部材の矯正力を調整できるものである。さらに、患者の歯列形状に沿ったU字(馬蹄)形状で、前記の移動部材及び把持部材を取り付けられる非弾性素材で作成された基底部を備えている。
矯正力を加えると、必ず、その矯正力に拮抗する力が装置に、そして、その装置と繋がっている歯にも加わる。すなわち、装置が外れようとする反作用が生じる。この装置が外れるように作用する拮抗力を抑え、望ましくない歯の移動を防ぐ力の一つが咬合力である。この咬合力及び咬合位置により、装置は、適正な位置及び状態に維持され、矯正力を適正に作用させることができる。そのため、咬合力を装置の安定した維持に適正に活かすことは、良好な治療結果を得る上で重要である。
10、10D 基底部
10FU 装着面
11、12、10FD 咬合面
13 係合形状
14 凸
15 凹
16、17 ステップ(段差)
20、20D 装着部
30、40 移動部材
31、32、41、42 歯面パット
33、34、37 支持部材
18、35、36、38、93 取付部
50、60 把持部材
70 側面カバー
71 取付部
72 被取付部
73 模様
75 フック
90、90′ 咬合面部材
91 上面
92 下面
101、103、104、106、603、604、605 弾性体取付部
102、105、601、602 金属製弾性体
310、320、610、620 歯面パット
Claims (9)
- 患者の歯列形態のデジタル立体情報に基づくマウスピース型矯正装置であって、
基底部と、前記基底部に設けられた装着部とを含み、
前記基底部は、非弾性素材で形成され、装着する顎の歯列の咬合面側の形状に沿った薄板体であり、
前記装着部は、移動したい歯に装着する移動部材と、移動しない歯に装着する把持部材とを備え、
前記移動部材は、移動したい歯の移動後の位置及び状態の歯冠歯面に適合し、当該歯冠を中心に外側(唇側又は頬側)及び内側(舌側)を包む2個1組の矯正用歯面パット対と、前記歯面パット対を前記基底部に取り付けており、前記歯面パット対に矯正力及び把持力を付与する矯正用弾性体とを含み、
前記把持部材は、移動しない歯の歯冠歯面に適合し、当該歯冠を中心に外側(唇側又は頬側)及び内側(舌側)を包む2個1組の把持用歯面パット対と、前記歯面パット対を前記基底部に取り付けており、前記歯面パット対に把持力を付与する把持用弾性体とを含む、マウスピース型可撤式歯列矯正装置。 - 前記矯正用弾性体は、前記矯正用歯面パット対と一体に形成されており、
前記把持用弾性体は、前記把持用歯面パット対と一体に形成されている、請求項1に記載のマウスピース型可撤式歯列矯正装置。 - 前記矯正用弾性体は、合金素材の弾性体を含む、請求項1に記載のマウスピース型可撤式歯列矯正装置。
- 前記矯正用弾性体は、弾性を備えた形状記憶合金を含む、請求項3に記載のマウスピース型可撤式歯列矯正装置。
- 前記把持用弾性体は、弾性を備えた形状記憶合金を含む、請求項1、3又は4に記載のマウスピース型可撤式歯列矯正装置。
- 前記矯正用弾性体及び把持用弾性体は、合金部分が露出しないように非金属素材により表面がコーティングされている、請求項3~5のいずれか一項に記載のマウスピース型可撤式歯列矯正装置。
- 前記基底部には、側面カバーを取り付けるための取付部、及び/又は、ゴムやワイヤを掛けるためのフックが設けられている、請求項1~6のいずれか一項に記載のマウスピース型可撤式歯列矯正装置。
- 前記基底部は、前記装着部が取り付けられる装着面と、当該装着面と反対側の咬合面とを有し、
前記咬合面には、生理的に適正な位置で咬合するための係合形状が付与されている、請求項1~7のいずれか一項に記載のマウスピース型可撤式歯列矯正装置。 - 前記基底部は、前記装着部が取り付けられる装着面と、当該装着面と反対側の咬合面とを有し、
前記咬合面には、生理的に適正な位置で咬合するための係合形状が付与された咬合面部材が、着脱可能に取り付けられている、請求項1~7のいずれか一項に記載のマウスピース型可撤式歯列矯正装置。
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EP21818330.9A EP4162896A1 (en) | 2020-06-03 | 2021-06-03 | Mouthpiece-type removable correction device |
US18/008,115 US20230270527A1 (en) | 2020-06-03 | 2021-06-03 | Mouthpiece type removable orthodontic appliance |
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WO2005000145A1 (ja) * | 2003-06-26 | 2005-01-06 | Aru Co., Ltd. | 咬合補助装置 |
JP2015150179A (ja) * | 2014-02-14 | 2015-08-24 | キープ・アップ株式会社 | 歯科矯正装置 |
JP3200778U (ja) | 2014-10-03 | 2015-11-05 | 柯一石Keko, Yi−Shih | マウスピース型矯正装置 |
JP6029220B1 (ja) | 2015-09-07 | 2016-11-24 | ケン・デンタリックス株式会社 | 歯列矯正用セットの提供方法 |
JP2016202921A (ja) * | 2015-04-27 | 2016-12-08 | 澄祥 洪 | 咀嚼式歯列矯正装置 |
JP2020096976A (ja) | 2016-01-07 | 2020-06-25 | セント・ジュード・メディカル・インターナショナル・ホールディング・エスエーアールエルSt. Jude Medical International Holding S.a,r.l. | 光学的感知のためのマルチ・コア・ファイバを有する医療デバイス |
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JP3200778B2 (ja) | 1992-10-26 | 2001-08-20 | 清水建設株式会社 | 土の密度・水分量の測定方法および測定装置 |
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2021
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- 2021-06-03 US US18/008,115 patent/US20230270527A1/en active Pending
- 2021-06-03 JP JP2022528896A patent/JPWO2021246495A1/ja active Pending
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WO2005000145A1 (ja) * | 2003-06-26 | 2005-01-06 | Aru Co., Ltd. | 咬合補助装置 |
JP2015150179A (ja) * | 2014-02-14 | 2015-08-24 | キープ・アップ株式会社 | 歯科矯正装置 |
JP3200778U (ja) | 2014-10-03 | 2015-11-05 | 柯一石Keko, Yi−Shih | マウスピース型矯正装置 |
JP2016202921A (ja) * | 2015-04-27 | 2016-12-08 | 澄祥 洪 | 咀嚼式歯列矯正装置 |
JP6029220B1 (ja) | 2015-09-07 | 2016-11-24 | ケン・デンタリックス株式会社 | 歯列矯正用セットの提供方法 |
JP2020096976A (ja) | 2016-01-07 | 2020-06-25 | セント・ジュード・メディカル・インターナショナル・ホールディング・エスエーアールエルSt. Jude Medical International Holding S.a,r.l. | 光学的感知のためのマルチ・コア・ファイバを有する医療デバイス |
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JPWO2021246495A1 (ja) | 2021-12-09 |
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