JP2005270134A - Hard mouthpiece for orthodontic treatment and its fabricating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hard mouthpiece for orthodontic treatment and/or malocclusion correcting treatment and to provide its fabricating method. <P>SOLUTION: This fabricating method of the hard mouthpiece for the orthodontic treatment comprises a step of installing a dentition model before the orthodontic treatment on an articulator and confirming the occluding state before the orthodontic treatment; a step of individually separating the tooth crown parts of the dentition model before the orthodontic treatment, moving the respective tooth crown parts and shaping the dentition model to be formed into the dentition model at the final orthodontic treatment; a process of determining the moving amount of each tooth crown part for every orthodontic treatment for dividingly performing the orthodontic treatment from the dentition model before the orthodontic treatment and the dentition model at the final orthodontic treatment; a step of fabricating a dentition model after the orthodontics based on the moving amount of each tooth crown part from the dentition model before the correction for every correction; and a step of fabricating the hard mouthpiece for the orthodontic treatment using a plurality of dentition models after the correction as matrix models. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to dental orthodontic treatment and malocclusion orthodontic treatment, and relates to a hard mouthpiece for orthodontic treatment and a method for manufacturing the same.

  A conventional orthodontic treatment device used for orthodontic treatment is a method in which a bracket is previously bonded to each tooth, and a ring-shaped or U-shaped device made of wire is inserted into a groove provided in the bracket. The orthodontic treatment device consisting of this bracket and wire has been used in many cases, but at each orthodontic treatment stage, the dentist needs trouble in mounting and fixing the bracket and fixing the wire. There was a problem that it took. Furthermore, there is a problem in that there is pain during adjustment, it is difficult to clean the dentition and the mouth of the device, it looks bad when worn, and stress is applied over a long period of time.

  Further, the Ni-Ti alloy is the same as the member arranged so as to follow the side surface of the tooth and the member for exclusively exerting the correcting force on the tooth and the member for holding, mounting or reinforcing the member. An orthodontic appliance that is integrally formed of a material is also disclosed. In addition, it is attached to the dentition in such a way that it is sandwiched from the inside and outside of the improved tooth, and has a three-dimensional structure that applies corrective force in any direction, and covers the teeth so that it is in close contact with the teeth from the top of the dentition. In addition, there is an orthodontic appliance that is integrally formed of the same material with a Ni-Ti alloy that generates a pressing force against the dentition and corrects the dentition, and the manufacturing method of the orthodontic appliance is a treatment first. An orthodontic appliance that creates a model from the teeth of a patient who needs to be corrected and then reflects the normal position after orthodontic correction considering the movement distance, the force applied to the teeth and the direction of the teeth that need to be corrected A technology designed and manufactured by precision casting based on this design has been made public. (See Patent Document 1)

Also, the orthodontic appliance design method is most suitable for taking the anatomical digital data of the mouth shape of the patient who needs orthodontic treatment and accumulating the correction data of the patient population. Choose a statistically average design that automatically calculates the ideal tooth finish position for this patient, such as attachment points for appliances such as tooth brackets, archwire and bracket shapes, etc. A design method for automatically obtaining the outer shape of the instrument is disclosed. (See Patent Document 2)

JP 2002-177299 A ([0013-0015], [0044]) JP-A-8-168499 ([0026])

  Conventional orthodontic treatment devices are often of the bracket wire type or metal band type, and most of them perform orthodontic treatment by applying orthodontic stress locally to the crown. In this case, there is a problem that the burden on the alveolar bone due to the local stress of the crown is increased. In addition, the rotation and movement of the crown is designed and determined from the dental model of the oral cavity before the orthodontic treatment, assuming the postdental orthodontic dentition, but in many cases orthodontic treatment is performed in the oral cavity while correcting. Since it is performed in the course of orthodontic treatment, precise orthodontic treatment is difficult, and there is a problem that the crown part cannot be moved properly at the right time, and it takes a long time. In particular, since it is necessary to perform orthodontic treatment on the upper and lower dentitions regarding occlusal orthodontic treatment, there is a serious problem that the treatment is difficult in this respect. In addition, it seems that orthodontic treatment methods using information technology system from the three-dimensional shape data of the dentition in the oral cavity seem to be implemented in the United States, but this also makes the orthodontic treatment that requires upper and lower orthodontic treatment It seems difficult to apply it. In order to solve these problems, the present applicant adopts a hard mouthpiece that applies the correction force to the entire dentition and the crown part, and in the upper and lower dentition models appropriately for each correction treatment time. The present invention provides a method for producing a hard mouthpiece that creates a dentition model that corrects dentition and malocclusion, and that is manufactured based on this dentition model.

  The hard mouthpiece for orthodontic treatment according to claim 1 according to the present invention for achieving the above object is a mouthpiece for orthodontic treatment and malocclusion treatment, wherein the upper, lower, upper or lower teeth It has the shape which covers the whole row and covers each crown part. Moreover, the hard mouthpiece for orthodontic treatment according to claim 2 is characterized in that the mouthpiece is made of hard plastic.

  In said structure, it is a removable hard mouthpiece which has the shape which covered the crown part over the whole dentition, and can be freely fitted and removed. According to this hard mouthpiece, it is possible to apply a stress to move and correct the entire crown portion during orthodontic treatment, so that the crown portion can be moved smoothly and the alveolar bone is not overwhelmed. . In addition, hard plastic is made of a cellulose acetate butyrate plastic material and is used in harsh conditions such as chewing at 100% humidity, so it has excellent corrosion resistance, water resistance (does not swell), load resistance, and hardness. It is suitable for orthodontic treatment because of its elasticity (no cracks). In addition, it is lightweight, excellent in transparency and moldability, and inexpensive. In addition, since it is a transparent material, it is integrated with the dentition at the time of wearing for orthodontic treatment and has excellent aesthetics.

  According to a third aspect of the present invention, there is provided a method of manufacturing a hard mouthpiece for orthodontic treatment, comprising a step of manufacturing a dental model from an impression of a dental crown and an oral cavity, and a root of each dental crown of the dental model. After planting the pins, a step of forming a wax alveolar part on the root side of the dentition and a plaster cover behind the alveolar part to produce an dentition model before the orthodontic treatment, and the dentition before the orthodontic treatment The step of attaching the model to the articulator and confirming the occlusal state before the orthodontic treatment and the crown part of the dentition model before the orthodontic treatment are individually separated, and then the respective crown parts are moved to the final To divide orthodontic treatment from the step of shaping the dentition model so as to be a dentition model at the time of orthodontic treatment, and the dentition model before the orthodontic treatment and the dentition model at the time of the final orthodontic treatment Determining the amount of movement of each crown part for each orthodontic treatment, and for each orthodontic treatment, each tooth from the dentition model before orthodontic treatment The orthodontic treatment based on the amount of movement of the orthodontic portion, and a step of producing a orthodontic treatment hard mouthpiece using a plurality of the corrected orthodontic models as a mother model. It is characterized by.

  As described above, an dentition model is created from the dentition in the patient's oral cavity, and the configuration of the dentition model is individually rotated and moved in the crown portion where pins are implanted in the alveolar portion of the plastic material. Then, the dentition model is attached to the articulator and the crown model is rotated and moved individually to adjust the final target dentition and the dentition model that corrects malocclusion. Process. Then, the number of orthodontic treatments from the dentition model before orthodontic treatment to the dentition model of the final orthodontic treatment target and the amount of rotation / movement of the crown part per one orthodontic treatment round are determined. Decide from the viewpoint of avoiding excessive load on the alveolar bone and reducing pain and discomfort. Next, a dental model obtained by rotating / moving the crown part per orthodontic treatment is adjusted from the dental model before the orthodontic treatment, and a plurality of mother models are manufactured by imitating the dental model after the adjustment. In this way, the mother model is manufactured by imitating the dentition model for each orthodontic treatment, and then the hard mouthpiece is manufactured from the mother model for each orthodontic treatment. According to this method, it is possible to confirm the result of actual rotation and movement of individual crowns with a real model and correct by simulation with the real one before applying orthodontic treatment to the patient. There is a feature that can be manufactured by accurately grasping the state of orthodontic treatment and reflecting it on a hard mouthpiece as an orthodontic treatment instrument.

  According to the fourth aspect of the present invention, there is provided a method of manufacturing a hard mouthpiece for orthodontic treatment, wherein a crown portion in which a wax forming a wax alveolar portion is planted by heat softening can be accurately moved. It is characterized by having

  Further, in the method of manufacturing a hard mouthpiece for orthodontic treatment according to claim 5 according to the present invention, the pins to be planted at the roots of the respective crown portions of the dental model are dowel-type dental technician pins. Characterize

  A thermoplastic wax is suitable as the plastic material for the alveolar portion. In addition, the pin to be planted at the root of the crown is a dowel-type dental technician pin, and the cross-section of the pin consists of a circle consisting of a part of the chord, which is adjusted by rotating and moving the crown during orthodontics. After that, it can be fixed and maintained without changing the correction state.

  In the method of manufacturing a hard mouthpiece for orthodontic treatment according to claim 6 of the present invention, the amount of movement of each crown portion that requires correction for each correction treatment is 0.2 to 0 per time. .5 mm range

  Smooth correction treatment can be performed by determining the range of correction amount. That is, if the movement amount is 0.2 mm or less per time, the number of correction treatments increases, and the total time required for the correction treatments may increase unnecessarily. Moreover, if it becomes 0.5 mm or more per time, the correction force exerted on the patient's crown by the hard mouthpiece is large, and the burden on the alveolar part and the alveolar bone is too great. There is a fear.

  According to a seventh aspect of the present invention, there is provided a method for manufacturing a hard mouthpiece for orthodontic treatment according to the present invention, wherein each orthodontic treatment hard mouthpiece is manufactured using the orthodontic treatment post orthodontic treatment as a mother model. It is manufactured using a hard plastic plate having a thickness of 0.5 to 1.5 mm.

  If the wall thickness is 0.5 mm or less, there is no sense of incongruity at the time of wearing, but there is a problem that the correction force is insufficient, and if it is 1.5 mm or more, the flexibility becomes less and it is difficult to cover the entire dentition. An excessive force may be applied to the alveolar bone.

  Moreover, the manufacturing method of the hard mouthpiece for orthodontic treatment of Claim 8 which concerns on this invention is a manufacturing method of the hard mouthpiece for orthodontic treatment of Claim 3, Comprising: The orthodontic model before correction Each of the crowns that require correction among the crown parts of the pre-correction dental model based on the amount of movement of each dental crown that requires correction from The part is moved based on the amount of movement, and the orthodontic model after adjustment is adjusted / shaped. (A) The orthodontic model after correction is read with a laser type three-dimensional reader, and then 3 Create a dentition mother model with a three-dimensional engraving machine, or (b) take a mold of the corrected dentition model with an impression material and inject gypsum into the mold with the impression material to prepare a dentition mother model It is a manufacturing process. According to the ninth aspect of the present invention, there is provided a plurality of orthodontic treatment hard mouthpieces manufactured by the orthodontic treatment hard mouthpiece manufacturing method according to any one of claims 3 to 8. It is a rigid mouthpiece for orthodontic treatment according to claim 2, comprising a set.

  As described above, according to the hard mouthpiece for orthodontic treatment according to the present invention, since it uses a transparent material, it is excellent in aesthetics even if it is attached to the dentition, and is removable. It can be removed at mealtime or as needed. Moreover, since the entire crown portion can be moved, the burden on the alveolar bone is reduced. In addition, according to the method of manufacturing a hard mouthpiece for orthodontic treatment according to the present invention, the results obtained by actually rotating and moving individual crown portions with a real model and correcting the result by simulation with the real model are corrected to the patient. Since it can be confirmed before the treatment is performed, the orthodontic treatment status of the dentition and malocclusion can be grasped more accurately and reflected in the rigid mouthpiece, which is an orthodontic treatment instrument. When the mouthpiece is used, stress such as pain and discomfort applied to the subject can be reduced, and the dentition and occlusion are excellent at the end of the orthodontic treatment. Moreover, according to the hard mouthpiece for orthodontic treatment by the manufacturing method according to the present invention, the individual crown portions can be moved up and down (extruding and press-fitting) relatively easily. As described above, orthodontic treatment and malocclusion treatment can be more effectively performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings and tables. FIG. 1 is a schematic diagram of a manufacturing method for manufacturing a dental model of a final orthodontic treatment target from a dental row before orthodontic treatment in the method for producing a hard mouthpiece for orthodontic treatment according to the present invention, Schematic diagram of the dentition model produced from the impression of the dentition before the orthodontic treatment, b is a schematic diagram of the dentition model in which the crown portion is ground and the pin is implanted, and c is the dentition model in which the pin is implanted. Schematic diagram to return the impression type, d is a schematic diagram in which the alveolar part is created on the pin side of the dentition model, e is a schematic diagram in which a cover is created on the back of the alveolar part, f is the upper and lower dentition model to the articulator Schematic diagram of wearing, g is a schematic diagram of separating the crown part individually from the dentition model, h is a schematic diagram of the dentition model that is adjusted by rotating and moving the separated crown part, i is after orthodontic treatment It is a schematic diagram which confirms the upper and lower dentition models with an articulator. FIG. 2 is a perspective view of a dentition model in which pins according to the present invention are planted. FIG. 3 is a plan view in which upper and lower dentition models are mounted on the articulator in order to move the crown portion according to the present invention. FIG. 4 is a perspective view of a hard plastic mouthpiece for orthodontic treatment manufactured according to the dentition mother model according to the present invention. FIG. 5 is a perspective view of a hard plastic mouthpiece for orthodontic treatment according to the present invention.

  Table 1 is a flow sheet of a method for manufacturing a hard mouthpiece for orthodontic treatment for performing multiple orthodontic treatments based on a patient's dentition and oral cavity, and includes steps 1 to 19. .

  The manufacturing method of a hard mouthpiece for orthodontic treatment according to the present invention will be described with reference to Table 1. In Step 1, an impression of a patient's crown and oral cavity (taken in a mold) is obtained by a conventional method. As the impression material, a silicone resin or rubber material having viscoelasticity is used. In Step 2, gypsum is injected into the impression mold by a conventional method to produce a plaster model for the crown, alveolar part, and oral cavity.

  In step 3, as shown in FIGS. 1a and 1b, the boundary between the crown portion 1 and the alveolar portion 3 is ground from the dentition gypsum model to make the crown portion 1 independent in the form of a dentition. In step 4, a pin hole for planting the pin 2 in each crown portion 1 of the dental model of the extracted crown portion is dug with a dental technician drill. This pinhole is usually circular in cross section and a depth of 5 mm is appropriate. . In step 5, the pin 2 is planted using an adhesive in the pinhole of each crown 1. This pin 2 uses a dowel-type dental laboratory pin whose portion protruding from the crown (about 15 mm in length) is circular with a partial cross section, and correction work for rotating and moving the crown Is preferable because the position of the pin 2 can be reliably fixed in the alveolar portion.

  In step 6, as shown in FIG. 1 c, the gypsum dentition (shown in FIG. 2) in which the crown portion 1 in which the pin 2 is planted is returned to the impression mold 6 in step 1. Since the impression mold is a viscoelastic material such as silicone resin, the crown 1 can be easily stored. In step 7, as shown in FIG. 1d, the alveolar portion 3 is formed in contact with the crown portion 1 at the site of the pin 2 protruding from the crown portion 1 housed in the impression mold 6 and planted. As the material of the alveolar part 3, wax is suitable as a thermoplastic material so that each crown part 1 in which the pins 2 are set later can be rotated and moved in the alveolar part 3 and fixed after correction. Yes. As thermoplasticity, the property which softens with warm water (60-80 degreeC) and solidifies at room temperature is good. Therefore, also in this case, the alveolar portion 3 can be formed after the wax which is the alveolar portion material is warmed and softened. In step 8, as shown in FIG. 1 e, a gypsum cover 4 is formed on the back of the alveolar portion 3 formed in step 7. This gypsum cover 4 covers the crown 1 and the alveolar part 3, forms an dentition model having the oral cavity 5 as a whole, and also serves as a support for holding the dental crown 1 and the alveolar part 3 ( (See FIG. 3).

  In step 9, as shown in FIG. 1f, the upper and lower dentition models in step 8 are mounted on the articulator 7. The articulator 7 is a normal one composed of upper and lower jaw intermaxillary adjustment screws 7d for hinged movement of the upper jaw portion 7a and the lower jaw portion 7b with a hinge 7c and for maintaining the occlusal state. The upper and lower jaws 7a and 7b are fitted with corresponding upper and lower dentition models, adjusted so as to be in the current meshing state of the patient to be orthodontic treatment, and then fixed with an adhesive. Reproduce the state of the row and occlusion. As shown in FIG. 3, the upper and lower dentition models mounted on the articulator 7 can hold the upper jaw portion 7a in an unfolded state, and in this state, the model data of the dentition model is obtained with a laser type three-dimensional reader. A mother model can be manufactured by reading and using a three-dimensional engraving machine, or a mother model can be manufactured from an impression mold by an impression method.

  In step 10, as shown in FIG. 1g, the dental crown model 1 shown in FIG. 1g is subjected to a process in which the crown parts 1 connected integrally are separated into individual crown parts 1 by a milling cutter. Instead of a milling cutter, a dental engine cutter or a saw for technology may be used. It should be noted that a separator as fine as possible is used for this separation operation.

  As shown in FIG. 1h, as shown in FIG. 1h, the crown 1 is rotated and moved for correction, and the occlusion is adjusted as shown in FIG. Create a column model. With respect to the dentition model of the final orthodontic treatment target, the three-dimensional type data is taken into the personal computer from the laser type three-dimensional type reader or stored in the impression type.

  As step 12, rotation and movement data of individual crown portions during the period from the orthodontic treatment orthodontic model to the final orthodontic treatment target dental model are obtained from the actual model. Decide the number of orthodontic treatments and the amount of movement per crown, and eventually the total number of orthodontic treatments. Usually, it varies depending on the symptoms of orthodontic treatment, but the number of orthodontic treatments is several to tens of times. Further, the rotation / movement per one time is suitably in the range of 0.2 to 0.5 mm.

  In steps 13 and 14, the crown part per orthodontic treatment is rotated and moved from the orthodontic model before orthodontic treatment to create a first orthodontic model after orthodontic treatment. The three-dimensional data is stored (the digital storage or the impression storage is optional as described above, but the digital is better from the viewpoint of long-term storage or midway correction). Next, steps 13 and 14 are repeated for the second correction, and the three-dimensional data of the dentition model corrected in step 15 is read and stored. In this way, Steps 13, 14, and 15 are repeated for the number of times of the orthodontic treatment determined in Step 12, and the three-dimensional data of the dental model after each correction is stored.

  Next, in step 16, in the case of digital processing, from the three-dimensional data of the orthodontic model after each correction, a command is sent from the personal computer storing the three-dimensional data to the three-dimensional engraving machine to make a hard plastic or plaster. To create a mother model of the dentition model. On the other hand, when the impression mold is stored, a mother model of a gypsum dentition model is created using the mold.

  Step 17 is a hard plastic for orthodontic treatment by thermocompression bonding using a thermoplastic hard plastic plate having a thickness of 0.5 to 1.5 mm following the mother model of the dentition model in step 16. Make a mouthpiece. The material and thickness vary depending on the degree of correction due to symptoms and the like. Usually, the thickness is 0.6 mm and 0.8 mm.

  The hard plastic mouthpiece for orthodontic treatment obtained by the above-mentioned manufacturing method floats up to about 0.5 to 1.0 mm at the beginning, but it fits the crown as the crown moves. Go. Basically, a new orthodontic treatment hard plastic mouthpiece is replaced every two weeks for orthodontic treatment of dentition and malocclusion. When the orthodontic treatment is performed with the hard plastic mouthpiece for orthodontic treatment according to the manufacturing method according to the present invention, orthodontic treatment can be accurately performed simultaneously with orthodontic treatment.

  A 25-year-old patient was given an impression of the dentition and oral cavity using a silicone resin impression material (trade name Exa High Flex). Gypsum was poured into this impression mold to produce a dentition model, and the crown was then cut. Next, pinholes are dug in each crown using a dental laboratory drill, and dowel-type dental laboratory pins (diameter 0.25 mm, length 20 mm, embedded 5 mm in the inner crown) are bonded with an adhesive. Installed. Next, the crown part is returned to the impression type, stored, planted, and the exposed pin part is created using a wax (trade name Quest Pure Paraffin Wax) as the alveolar part, and before the orthodontic treatment using plaster on the back part A dentition model was created. The upper and lower dentition models were attached to an articulator to reproduce the occlusal state before orthodontic treatment. Next, with the wax in the alveolar part softened with hot water at 60 to 80 ° C., the crown part is rotated and moved (specifically, 0.3 to 0.5 mm), and the final orthodontic treatment target tooth The row model was adjusted. The movement of the crown portion per orthodontic treatment was 0.3 mm, and the total number of orthodontic treatments was 40.

  While the dental model was mounted on the articulator, the crown part was rotated and moved for each correction, and the corrected dental model was adjusted. With the dentition model adjusted for each orthodontic attached to the articulator (see Fig. 3), 3D data is collected with a laser 3D reader (trade name Roland 3D Laser Scanner LPX-250). Saved to computer. Based on the three-dimensional data stored in these personal computers, a hard plastic block was engraved using a three-dimensional engraving machine (trade name: Roland EGX-300), and a mother model of a dentition model was produced. Following this mother model, a hard plastic mouthpiece (manufactured by ELCOJUR) having a thickness of 0.5 to 1.5 mm was heat-pressed at 100 to 120 ° C. to produce a hard plastic mouthpiece.

  Using the obtained hard plastic mouthpiece, the period per orthodontic treatment was set to 1 to 2 weeks, and the orthodontic treatment was performed on the patient. Although it was 0.5 mm above the crown at the beginning of wearing, it was fitted to the crown 2 to 3 days later. As a result of performing orthodontic treatment over 40 weeks, the orthodontic treatment and the occlusal state were successfully performed.

  A 12-year-old patient was given an impression of the dentition and oral cavity using a silicone resin impression material (trade name Exa High Flex). Gypsum was poured into this impression mold to produce a dentition model, and the crown was then cut. Next, pinholes are dug in each crown using a dental laboratory drill, and dowel-type dental laboratory pins (diameter 0.25 mm, length 20 mm, embedded 5 mm in the inner crown) are bonded with an adhesive. Installed. Next, the crown part is returned to the impression type and stored, and the planted pin part is created using wax (trade name Quest Pure Paraffin Wax) as the alveolar part, and the dental dentition before the orthodontic treatment using plaster on the back part A model was created. The upper and lower dentition models were attached to an articulator to reproduce the occlusal state before orthodontic treatment. Next, with the wax in the alveolar part softened with warm water of 60 to 80 ° C., the rotation and movement of the crown part (specifically, 0.3 to 0.5 mm per orthodontic treatment, a total of 1. 2 to 1.5 mm), and the dental model of the final orthodontic treatment target was adjusted. The total number of orthodontic treatments was 40.

  While the dental model was mounted on the articulator, the crown part was rotated and moved for each correction, and the corrected dental model was adjusted. An impression mold was made using an impression material while the dentition model adjusted for each correction was still attached to the articulator (see FIG. 3). Gypsum (trade name PDR hard plaster) was injected into this impression mold to produce a mother model of a dentition model. Following this mother model, a hard plastic mouthpiece (manufactured by ELCOJUR) having a thickness of 0.5 to 1.5 mm was heat-pressed at 100 to 120 ° C. to produce a hard plastic mouthpiece.

  Using the obtained hard plastic mouthpiece, the period per orthodontic treatment was set to 1 to 2 weeks, and the orthodontic treatment was performed on the patient. At first, it was 0.5 mm above the crown, but after a few days it was fitted to the crown. As a result of performing orthodontic treatment over 40 weeks, the orthodontic treatment and the occlusal state were successfully performed.

  The present invention can be used in the field of orthodontic treatment.

FIG. 2 is a schematic diagram of a manufacturing method for manufacturing a dental model of a final orthodontic treatment target from a dental row before orthodontic treatment in the method for producing a hard mouthpiece for orthodontic treatment according to the present invention, wherein a is a tooth before orthodontic treatment; Schematic diagram of the dentition model manufactured from the impression of the row, b is a schematic diagram of the dentition model in which the crown portion is ground and the pins are planted, and c is the impression model of the dentition model in which the pins are erected Schematic diagram, d is a schematic diagram in which the alveolar portion is created on the pin side of the dentition model, e is a schematic diagram in which a cover is created on the back of the alveolar portion, f is a schematic diagram in which the upper and lower dentition models are attached to the articulator, g is a schematic diagram for separating the crown part individually from the dental model, h is a schematic diagram of the dental model for adjustment by rotating and moving the separated crown part, and i is an upper and lower dental model after correction. It is a schematic diagram which confirms with an articulator. It is a perspective view of the dentition model which planted the pin concerning the present invention. It is a top view which mounted the upper and lower dentition model to the articulator in order to perform the movement of the crown part concerning the present invention. It is a perspective view of the hard plastic mouthpiece for orthodontic treatment manufactured according to the dentition model mother model concerning the present invention. It is a perspective view of the hard plastic mouthpiece for orthodontic treatment according to the present invention.

Explanation of symbols

1: Crown part 2: Pin 3: Alveolar part 4: Cover
5a: palate 5b: bottom of the mouth 6: impression type 7: articulator 7a: upper jaw 7b: lower jaw 7c: hinge 7d: maxillary mandibular adjustment screw 8: cutter 9: mother model 10: rigid plastic for orthodontic treatment Mouthpiece

Claims (9)

  A mouthpiece for orthodontic treatment and malocclusion treatment, characterized in that it has a shape covering the entire upper and lower or upper or lower teeth and covering each crown. Hard mouthpiece for orthodontic treatment.   2. The hard mouthpiece for orthodontic treatment according to claim 1, wherein the mouthpiece is made of hard plastic.   (B) The process of producing a dental model from the impression of the crown part and the oral cavity, and (b) After the pin is planted at the root part of each dental crown part of the dental model, it is made of wax on the root side of the dental series. Forming a plaster cover behind the alveolar part and the alveolar part to produce a dental model before orthodontic treatment; and (c) attaching the dental model before orthodontic treatment to the articulator and before orthodontic treatment A step of confirming the occlusal state; and (d) separating the crown portions of the dentition model before the orthodontic treatment individually, and then moving the respective crown portions as necessary to obtain the teeth during the final orthodontic treatment. A step of shaping the dentition model to form an arch model, and (e) an orthodontic treatment for dividing the orthodontic treatment from the dentition model before the orthodontic treatment and the dentition model at the final orthodontic treatment. A step of determining the number of treatments and the amount of movement of each crown that requires correction at each correction treatment, and (f) before each correction. A process of producing a dental matrix model after correction based on the amount of movement of each crown portion that requires correction from the dental model, and (g) a tooth from the dental matrix model after correction for each orthodontic treatment The method for producing a hard mouthpiece for orthodontic treatment according to claim 1 or 2, comprising the step of producing a hard mouthpiece for orthodontic treatment.   4. The hard mouthpiece for orthodontic treatment according to claim 3, wherein the wax forming the wax alveolar portion has a property that enables the crown portion planted by heat softening to move accurately. Manufacturing method.   4. The method of manufacturing a hard mouthpiece for orthodontic treatment according to claim 3, wherein the pins to be planted at the roots of the respective crown portions of the dentition model are dowel-type pins for dental technicians.   4. The orthodontic treatment hard according to claim 3, wherein the amount of movement of each crown portion that requires correction at each orthodontic treatment is in the range of 0.2 to 0.5 mm per time. 5. A method for manufacturing a mouthpiece.   When each orthodontic treatment hard mouthpiece is manufactured using the orthodontic model after orthodontic treatment as a mother model, it is manufactured using a hard plastic plate having a thickness of 0.5 to 1.5 mm. The manufacturing method of the hard mouthpiece for orthodontic treatment of Claim 3 to do.   Based on the amount of movement of each crown part that needs correction from the dental model before correction, the process of manufacturing the mother model of the dental model after correction is performed in the crown part of the dental model before correction. Each necessary crown is moved based on the amount of movement, and the orthodontic model after correction is adjusted and shaped. (A) The orthodontic model after correction is read with a laser type three-dimensional reader. Read the mold, and then make a dentition mother model with a 3D engraving machine, or (b) take the orthodontic dentition model with an impression material and inject gypsum into the impression material mold The method of manufacturing a hard mouthpiece for orthodontic treatment according to claim 3, wherein the step is a step of manufacturing an orthodontic mother model.   The orthodontic treatment hard mouthpiece manufactured by the method for manufacturing an orthodontic therapy hard mouthpiece according to any one of claims 3 to 8 is a plurality of sets. Hard mouthpiece for orthodontic treatment as described in 1.

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