JP2006212202A - Model tooth retainer and model tooth position adjusting device having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a model tooth retainer and a model tooth position adjusting device having the same used for adjusting a precise position of a model tooth of a tooth row model. <P>SOLUTION: This model tooth position adjusting device 1 is provided with a model tooth retainer 6 retaining a model tooth 3 of the tooth row model 2 corresponding to a tooth of a patient to be corrected, a fixing means 7 immovably fixing the tooth row model 2, an attachment part 8 for attaching an attachment object part 15 of the model tooth retainer 6, and a position adjusting mechanism 9 adjusting the position of the attachment part 8 relative to the tooth row model 2 fixed to the fixing means 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides each dental model for producing a mouthpiece made of synthetic resin (including ethylene vinyl acetate (EVA), cellulose acetobutyrate, etc.) having a shape corresponding to each orthodontic stage of orthodontics. The present invention relates to a model tooth holder used for position adjustment of a model tooth and a model tooth position adjusting apparatus including the model tooth holder.

JP 2003-319948 A

  For example, Patent Document 1 discloses an orthodontic mouthpiece made of synthetic resin having translucency.

  By the way, such a mouthpiece is modeled from a dentition model in which the position of the model tooth corresponding to the tooth to be corrected by the patient is manually adjusted, but corresponds to the tooth to be corrected of the patient's tooth. If the position of the model tooth cannot be accurately adjusted to an appropriate position in relation to the current position of the patient's tooth and the final target position of the tooth, an appropriate pressure is applied to the tooth to be corrected by the patient. It becomes difficult to produce the mouthpiece to be given.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a model tooth holder used for accurate position adjustment of a model tooth of a dentition model, and a model tooth position adjusting device including the same. Is to provide.

  The model tooth holder of the present invention has a pair of abutment portions that respectively abut the model teeth separated from each other of the dentition model so as to sandwich the model teeth, and the model teeth are sandwiched between the pair of abutment portions. Provided with an approach and separation mechanism for moving the pair of contact portions toward and away from each other, and an approach and separation mechanism, and the positions of the model teeth held between the pair of contact portions except for the model teeth And an attached portion attached to the attachment portion of the model tooth position adjusting device for adjusting the row model.

  According to the model tooth holder of the present invention, the pair of contact portions that respectively contact the model teeth separated from each other of the dentition model so as to sandwich the model teeth, and the model teeth are sandwiched between the pair of contact portions. An approach and separation mechanism for moving the pair of contact portions toward and away from each other and an approach and separation mechanism are provided, and the position of the model tooth held between the pair of contact portions is The model tooth corresponding to the tooth to be corrected by the patient can be reliably secured with an appropriate clamping force. Moreover, it can be used for accurate position adjustment of the model teeth of the dentition model by being attached to the attachment portion of the model tooth position adjusting device by the attached portion.

  In a preferred example of the model tooth holder of the present invention, the contact portion has an elastic member that is elastically deformed along the surface shape of the model tooth by being pressed against the model tooth or a surface shape of the model tooth that is contacted by thermal softening. It has a heat softening member that deforms along. According to such a preferable example, it is possible to increase the area of the pair of abutting portions that abut on the model teeth, and thus more reliably model teeth of various shapes corresponding to the teeth to be corrected by the patient. Can be held in.

  In a preferred example of the model tooth holder according to the present invention, the model tooth holder further includes a heating means for heating to soften the thermosoftening model gingiva of the dentition model. According to such a preferred example, it is possible to eliminate the need to separately prepare a heating tool such as a cautery for softening the model gingiva. For example, such a model tooth holder can be used to adjust the position of the model tooth at the mounted portion. When attached to the attachment part of the device, it is possible to easily adjust the position of the model tooth by eliminating the need to operate the model tooth position adjusting device and the separate heating tool simultaneously. it can.

  In a preferred example of the model tooth holder of the present invention, the heating means includes at least one heat generating portion that comes into contact with the model gingiva. According to such a preferable example, the softening of the model gingiva can be quickly caused by bringing the heat generating portion into contact with the model gingiva.

  The model tooth position adjusting device of the present invention includes the above-described model tooth holder, a fixing means for fixing the dentition model, a mounting part for mounting a mounted portion of the model tooth holder, and a dentition fixed by the fixing means. A position adjusting mechanism for adjusting the position of the mounting portion with respect to the model.

  In a preferred example of the model tooth position adjustment device of the present invention, the position adjustment mechanism includes an X-direction moving mechanism that moves the attachment portion in the X direction with respect to the dentition model fixed by the fixing means, and the attachment portion by the fixing means. A Y-direction moving mechanism that moves the fixed dental model in the Y direction that intersects the X direction, and a Z direction that intersects the X and Y directions with respect to the dental model fixed by the fixing means. At least one of a Z-direction moving mechanism for moving the attachment portion and a turning mechanism for turning the attachment portion with respect to the dentition model fixed by the fixing means.

  In a preferred example of the model tooth position adjusting device of the present invention, the fixing means includes a fixing base for fixing the dentition model and a magnet provided on the fixing base. According to such a preferable example, when a magnet, iron, or the like is provided on the base of the dentition model, the dentition model can be attracted by the magnet of the fixing means, and thus, for the model tooth position adjusting device. The dentition model can be easily positioned.

  ADVANTAGE OF THE INVENTION According to this invention, the model tooth holder used for exact position adjustment of the model tooth of a dentition model and the model tooth position adjustment apparatus provided with the same can be provided.

  Next, an example of an embodiment of the present invention will be described in more detail based on an example shown in the figure. The present invention is not limited to these examples.

  1 to 11, the model tooth position adjusting device 1 of this example includes a model tooth holder 6 that holds a model tooth 3 corresponding to a tooth to be corrected by a patient of the dentition model 2, and a dentition model 2. Fixing means 7 for immovably fixing, attaching part 8 for attaching the attached part 15 of the model tooth holder 6, and a position adjusting mechanism 9 for adjusting the position of the attaching part 8 with respect to the dentition model 2 fixed to the fixing means 7. It is equipped with.

  As shown in FIGS. 7, 8, and 11, the dentition model 2 molded from the patient's dentition has model teeth 3 made of gypsum and the like, and heat softening (thermoplasticity) made of wax or the like. The model gum 4 has a model tooth 3 and a base 5 for supporting the model gum 3 and the model gum 4. The model teeth 3 are separated from each other, and the model gingiva 4 maintains the position of each model tooth 3. The base 5 is provided with a magnet, iron, etc. 95 in this example. Such an dentition model 2 is adjusted when the position of the model tooth 3 corresponding to the tooth to be corrected by the model tooth position adjusting device 1 is adjusted so that the orthodontic mouthpiece or the like can be used as a basis. Can be used as a mold. The model gingiva 4 is softened by being heated to about 60 ° C., for example.

  As shown in FIGS. 2 to 6, the model tooth holder 6 has a pair of contact portions 11 and 12 that respectively contact the model teeth 3 and sandwich the model teeth 3, and contact portions 11 and 12. An approach and separation mechanism 14 that brings the contact portions 11 and 12 closer to and away from each other so as to sandwich the model teeth 3, and an approach and separation mechanism 14 are provided, and are held by the contact portions 11 and 12. And an attached portion 15 attached to the attaching portion 8 of the model tooth position adjusting device 1 for adjusting the position of the model tooth 3 with respect to the dentition model 2 excluding the model tooth 3.

  The contact portion 11 includes a contact member 21a that contacts the model tooth 3 and a support arm 22a as a support member that supports the contact member 21a. The contact portion 12 includes a contact member 21b that contacts the model tooth 3 and a support arm 22b that supports the contact member 21b. The contact members 21a and 21b are arranged to face each other in the X direction.

  Either one or both of the contact members 21a and 21b are elastically deformed along the surface shape of the model tooth 3 by being pressed against the model tooth 3 (including natural rubber, synthetic rubber such as silicon rubber), etc. It may be made of an elastic member, or may be made of a heat softening member that has heat softening properties (thermoplasticity) and deforms along the surface shape of the model tooth 3 that comes into contact with the heat softening. . The thermosoftening member does not exhibit plasticity at room temperature, but softens when heated and is plastically deformed to a shape complementary to the surface shape of the model tooth 3 contacting the thermosoftening member. You may consist of the thermoplastic elastomer which shows plasticity.

  When the contact members 21a and 21b are made of an elastic member such as rubber, the contact members 21a and 21b can be quickly brought into contact with the model tooth 3 with a wide contact area, and a heat softening member such as a thermoplastic elastomer. When it consists of, it can be made to contact | abut with a still larger contact area with respect to the model tooth 3. FIG. When the contact members 21a and 21b are made of a heat softening member, the contact portions 11 and 12 generate heat by electric heat, ultrasonic waves, laser, hot air, high frequency, etc. and heat soften the generated heat. A heat generating part (not shown) arranged in contact with or in the vicinity of the heat softening member so as to be able to conduct to the member is further provided, and the heat softening member is softened by the heat generated in the heat generating part. In addition, instead of or in addition to the heat generating part, a heating part (not shown) for heating the thermosoftening member by electric heat, ultrasonic waves, laser, hot air, high frequency, etc. is further provided. It may be. According to such contact portions 11 and 12, the contact members 21a and 21b can be quickly brought into contact with the model tooth 3 with a wide contact area.

  The support arms 22a and 22b, to which the contact members 21a and 21b are respectively attached at one end, are made of metal such as aluminum and stainless steel and are made of a member having a rectangular horizontal section extending in the Z direction perpendicular to the X direction. Depending on the rigidity that does not cause bending when the model teeth 3 are clamped by the cooperation of the contact portions 11 and 12, and the heat that can be conducted from the heat generating portion of the contact portions 11 and 12 and the heated model gum 4 It has heat resistance that does not deform. Abutting members 21a and 21b are arranged between the support arms 22a and 22b. The support arms 22a and 22b may be made of synthetic resin as long as they have the rigidity and heat resistance, and the horizontal cross section is made of a member having a circular shape, an annular shape, a triangular shape, a polygonal shape, or the like. It may be. Further, scales are shown on the support arms 22a and 22b so that the positions of the connecting means 37 and 38 in the Z direction with respect to the respective cylinders 41 can be specified.

  As shown in FIGS. 5 and 6 in particular, the approach and separation mechanism 14 has a forward threaded portion 31 and a reverse threaded portion 32 and is provided with a knob 33 at one end and is extended in the X direction. A nut 35 that is screwed to the normal thread portion 31, a nut 36 that is screwed to the reverse screw portion 32, a connecting means 37 that connects the support arm 22a to the screw shaft 34 via the nut 35, Connecting means 38 for connecting the support arm 22b to the screw shaft 34 via the nut 36 is provided. By rotating the knob 33, the screw shaft 34 is rotated forward so that the contact portions 11 and 12 are moved in the X direction. While making them approach each other, the contact portions 11 and 12 are separated from each other in the X direction by rotating the screw shaft 34 in the reverse direction. Both ends of the screw shaft 34 are rotatably supported by the attached portion 15. The connecting means 37 is arranged to face the connecting means 38 in the X direction.

  The connecting means 37 is provided on a side surface of the cylindrical body 41 and a rectangular cylindrical body 41 extending in the Z direction in which the support arm 22a is inserted from the opening at one end and the nut 35 is fixed on the other end side. And a nut 43 for the set screw 42 screwed to the set screw 42 and fixed to the side surface of the cylindrical body 41. The tip of the set screw 42 is pressed against the side surface of the support arm 22a by the rotation of the set screw 42, thereby fixing the support arm 22a to the cylindrical body 41, and the support arm 22a is fixed to the screw shaft 34 by the fixing. To be connected to. In such a connecting means 37, the press contact of the set screw 42 to the support arm 22a is released by the rotation of the set screw 42, whereby the position of the contact member 21a in the Z direction with respect to the cylindrical body 41 can be adjusted. As shown in FIGS. 9 to 11, when there is a heating means 16 to be described later, the position of the heating means 16 in the Z direction with respect to the heat generating portion 81 a can also be adjusted. Since the connecting means 38 is configured in the same manner as the connecting means 37, hereinafter, the connecting means 38 will be given the same reference numerals in the drawings, and detailed description thereof will be omitted.

  The approaching / separating mechanism 14 has a pressure contact member or an engagement member that presses or engages the screw shaft 34 or the knob 33, and presses the pressure contact member or the engagement member with the screw shaft 34 or the knob 33. Alternatively, rotation prohibition means for prohibiting rotation of the screw shaft 34 by disengagement of rotation of the screw shaft 34 by disengagement of pressure contact or engagement of the press contact member or the engagement member with the screw shaft 34 or the knob 33 while prohibiting rotation of the screw shaft 34 by engagement. (Not shown) may further be provided.

  The mounted portion 15 is fixed to the upper plate portion 51, the lower plate portion 52, the side plate portions 53 and 54, the front plate portion 55 and the rear plate portion 56, the upper plate portion 51 and the side plate portion 53, and the screw shaft 34. A rotation support member 57 that rotatably supports one end of the screw shaft 34, a rotation support member 58 that is fixed to the upper plate portion 51 and the side plate portion 54 and rotatably supports the other end of the screw shaft 34; A slit 59 provided in the lower plate portion 52 extending in the X direction, a fitting portion 60 fixed to the upper plate portion 51 and the rear plate portion 56 and fitted to the D-cut portion 132 of the shaft 131, and fitting A stop bolt 61 is provided that press-contacts the D-cut portion 132 fitted to the joint portion 60 and maintains the fitting state between the fitting portion 60 and the D-cut portion 132.

  A hole 65 disposed on the fitting portion 60 is formed in the upper plate portion 51, and the shaft 131 is inserted into the hole 65 so as to be freely withdrawn. The side plate portion 54 is formed with a hole 66 through which the screw shaft 34 passes and a tool insertion hole 67 into which a tool (not shown) such as a hexagon wrench for rotating the set bolt 61 is inserted and removed.

  The cylinders 41 of the connecting means 37 and 38 are arranged in the slit 59 so as to be movable in the X direction. The surface 52a of the lower plate portion 52 that defines the slit 59 is slidably in contact with each of the portions of the cylindrical body 41 away from the screw shaft 34, so that the contact portions 11 and 12 rotate with respect to the attached portion 15. Is prohibited.

  The fitting portion 60 includes a main body 68 and a hole 69 formed in the main body 68 and having an inner surface shape complementary to the surface shape of the D-cut portion 132. The D cut part 132 is inserted into the D cut part 132 so that the D cut part 132 can be pulled out.

  A hexagonal groove 71 is formed in the head 70 of the set bolt 61 and is pressed against the D-cut portion 132 inserted into the hole 69 by being rotated by a tool such as a hexagon wrench fitted in the hexagonal groove 71. Alternatively, it is screwed into the fitting portion 60 so as to release the pressure contact.

  The model tooth holder 6 may further include a heating means 16 for heating the model gum 4 to soften, as shown in FIGS. 9 to 11.

  The heating means 16 generates heat by supplying electric energy and the like, and a pair of heat generating portions 81a and 81b that contact the model gingiva 4 and apply heat, and the heat generating portion 81a are arranged below the contact member 21a. The heat generating portion 81b is arranged such that the heat generating portion 81a is disposed at one end and the heat generating portion 81b is disposed below the contact member 21b and is opposed to the heat generating portion 81b in the X direction. Is attached to one end of the arm member 82b, the other end of the arm member 82a is attached to the cylindrical body 41 of the connecting means 37 so as to be rotatable in the R5 direction, and the other end of the arm member 82b is connected to the connecting means. 38, a mounting portion 83b that is rotatably mounted in the R6 direction, a biasing means 84a that biases the heat generating portion 81a toward the abutting portion 12 via the arm member 82a, and a heat generating portion 81. The are provided with biasing means 84b which urges via the arm member 82b to the contact portion 11 side. A hole into which a shaft 86 extending in the Y direction perpendicular to the X direction and the Z direction is inserted is formed in the other end of each of the arm members 82a and 82b. The heat generating portions 81a and 81b may be configured to generate heat by electric heat, ultrasonic waves, laser, warm air, high frequency, or the like.

  The mounting portion 83a includes a shaft support member 85 fixed to the cylinder body 41 and a shaft 86 supported by the shaft support member 85. The shaft 86 has an arm member 82a centered on the shaft 86 in the R5 direction. The arm member 82a is inserted into a hole at the other end so as to be freely rotatable. Since the mounting portion 83b is configured in the same manner as the mounting portion 83a, hereinafter, the mounting portion 83b is appropriately denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.

  The urging means 84a includes a spring 87 attached to the cylindrical body 41 and the arm member 82a of the connecting means 37, and the heat generating portion is provided by applying a turning force in the R5 direction to the arm member 82a by the elasticity of the spring 87. 81a is urged toward the contact portion 12 side. Since the urging means 84b is configured in the same manner as the urging means 84a, hereinafter, the urging means 84b is appropriately given the same reference numerals in the drawings, and detailed description thereof is omitted.

  According to the heating means 16 described above, it is possible to eliminate the need to prepare a heating tool such as cautery for softening the model gingiva 4 separately from the model tooth position adjusting device 1 and the model tooth position adjusting device 1. The need to operate the separate heating tools simultaneously can be eliminated, and the position of the model tooth 3 can be easily adjusted. The softening of the model gingiva 4 can be caused quickly by bringing the heat generating portions 81a and 81b into contact with the model gingival 4. The heating means 16 is disposed in the vicinity of the model gum 4 of the dentition model 2 in which the model teeth 3 are held by the model tooth holder 6 in place of or in addition to the heat generating portions 81a and 81b, and the model. The tooth holder 6 may be equipped with a heating part (not shown) for heating the model gingiva 4 with electric heat, ultrasonic waves, laser, hot air, high frequency, etc. Can achieve the same effects as described above.

  As shown in FIGS. 1 and 7, the fixing means 7 is interposed between the fixing base 91 provided on the base 90, the base 90 and the fixing base 91, and the model of the fixing base 91. And an adjusting mechanism 92 for adjusting the position with respect to the tooth holder 6.

  The fixing base 91 is formed on the mounting surface 94 by attracting a fixing base main body 93, a mounting surface 94 on which the dentition model 2 is mounted, and a magnet, iron, etc. 95 provided on the base 5 of the dentition model 2. A magnet 96 is provided on the fixed base main body 93 so that the placed dentition model 2 can be fixed to the fixed base main body 93 in a stationary manner.

  In addition, the fixing means 7 is the fitting of the base 5 when the base 5 of the dentition model 2 to be fixed is provided with one or a plurality of fitting convex portions or fitting concave portions (not shown). One or a plurality of fitting recesses or fitting protrusions (not shown) provided on the mounting surface 94 so that the dental model 2 can be fixed by fitting with the protrusions or fitting recesses. May be provided.

  In this example, the adjustment mechanism 92 includes a rotation mechanism 101 that rotates the fixing base 91 in the R1 direction around an axis extending in the Z direction, and an axis R2 around the axis extending in the direction orthogonal to the Z direction. And a rotating mechanism 102 that rotates in the direction.

  The rotation mechanism 101 is supported by a fixed disk 111, a disk-shaped fixed disk 111 fixed to the base 90, a disk-shaped rotating disk 112 that is rotatable in the R1 direction with respect to the fixed disk 111, and the fixed disk 111. And a screw shaft 114 with a knob 113 that rotates the rotating disk 112 in the R1 direction by rotation, and a set screw 115 that prohibits the rotation of the rotating disk 112 in the R1 direction with respect to the stationary platen 111. The position of the fixed base 91 in the R1 direction with respect to the model tooth holder 6 is adjusted by the rotation of the turntable 112 in the R1 direction based on the rotation of the rotation table 112.

  The rotation mechanism 102 is fixed to the turntable 112 and the mounting table 122 on which the fixing table main body 93 is mounted on the concave surface 121 so that the fixing table 91 is rotatable in the R2 direction. A screw shaft 124 with a knob 123 that is rotatably supported and rotates the fixing base body 93 in the R2 direction along the concave surface 121 by rotation, and a stopper that prohibits the rotation of the fixing base 91 in the R2 direction with respect to the mounting table 122. The screw 125 is provided, and the position of the fixing base 91 in the R2 direction with respect to the model tooth holder 6 is adjusted by the rotation of the fixing base main body 93 in the R2 direction based on the rotation of the screw shaft 124.

  The mounting portion 8 includes a D-cut portion 132 provided at one end of a shaft 131 extending in the Z direction. The D-cut portion 132 is fitted with the fitting portion 60 as described above, and the fixing bolt 61 is used. The attached portion 15 is attached by maintaining the fitting state.

  As shown in FIG. 1, the position adjusting mechanism 9 includes an X-direction moving mechanism 141 that moves the shaft 131 provided with the D-cut portion 132 in the X direction with respect to the dentition model 2 fixed by the fixing means 7. And a Y-direction moving mechanism 142 that moves the shaft 131 in the Y direction with respect to the dentition model 2 fixed by the fixing means 7.

  The Y-direction moving mechanism 142 has a fixed plate 151 fixed to the base 90 via a support shaft 145 extending in the Z direction, and the fixed plate 151 is movable in the Y direction with respect to the fixed plate 151. A Y-direction moving plate 152 attached via a guide rail (not shown) or the like extending in the direction and a fixed plate 151 are rotatably supported, and the Y-direction moving plate 152 is fixed to the fixed plate 151 by rotation. A Y-direction moving plate based on the rotation of the screw shaft 154 includes a screw shaft 154 with a knob 153 that moves in the Y-direction and a set screw 155 that prohibits the Y-direction moving plate 152 from moving in the Y direction. The position in the Y direction with respect to the dentition model 2 on the fixed base 91 of the model tooth holder 6 attached to the shaft 131 is adjusted by the movement of 152.

  The X-direction moving mechanism 141 is attached to the Y-direction moving plate 152 via a guide rail (not shown) that extends in the X-direction so as to be movable in the X-direction with respect to the Y-direction moving plate 152. In addition, the X-direction moving plate 162 on which the other end of the shaft 131 is mounted and the Y-direction moving plate 152 are rotatably supported, and the X-direction moving plate 162 is rotated with respect to the Y-direction moving plate 152 by the rotation. And a set screw 165 that prohibits movement of the X-direction moving plate 162 in the X direction. The movement of the X-direction moving plate 162 based on the rotation of the screw shaft 164 is provided. The position of the model tooth holder 6 attached to the shaft 131 in the X direction with respect to the dentition model 2 on the fixed base 91 is adjusted.

  The position adjusting mechanism 9 includes a Z-direction moving mechanism that moves the shaft 131 in the Z direction with respect to the dentition model 2 fixed by the fixing means 7 in addition to or instead of the above-described configuration, and the shaft 131 or the shaft. At least one of a rotation mechanism for rotating the model tooth holder 6 attached to 131 in the R3 direction or the R4 direction shown in FIG. 4 with respect to the dentition model 2 fixed by the fixing means 7 is used. You may have.

  Hereinafter, the case where the position of the model tooth 3 corresponding to the tooth to be corrected by the patient of the dentition model 2 is adjusted in detail by the model tooth position adjusting apparatus 1 of the present example will be described in detail. First, the dentition model 2 is placed on the fixed base 91 so as to be immovable with respect to the fixed base 91. Next, the knobs 113 and 123 of the adjustment mechanism 92 are rotated so that the position of the model tooth 3 corresponding to the tooth to be corrected by the patient in the directions R1 and R2 is easily held by the model tooth holder 6, for example, Adjust so that the tooth surface of the model tooth 3 to be sandwiched between the contact members 21a and 21b can face the contact members 21a and 21b with respect to the direction orthogonal to the Z direction (including the X direction). The screws 115 and 125 are rotated to fix the fixing base 91 to the base 90 so as not to move.

  Next, the knobs 153 and 163 of the position adjusting mechanism 9 are rotated, and the model tooth holder 6 is moved in the X direction and the Y direction via the shaft 131 so as to be above the dentition model 2 fixed to the fixing base 91. Deploy. Next, the set screw 42 of the connecting means 37 is rotated to release the pressure contact of the set screw 42 to the support arm 22a, and the support arm 22a is moved in the Z direction so that the contact member 21a becomes a tooth to be corrected by the patient. It arrange | positions to the cheek side of the corresponding model tooth 3, and after arrangement | positioning, the set screw 42 of the connection means 37 is rotated and it press-contacts to the support arm 22a. The contact member 21b is also arranged on the lingual side of the model tooth 3 corresponding to the tooth to be corrected by the patient in the same manner as described above. In this way, the pair of contact members 21a and 21b are opposed to each other with the model teeth 3 in between.

  Next, the knob 33 of the approach and separation mechanism 14 is rotated to bring the contact portions 11 and 12 closer to each other in the X direction so that the contact members 21a and 21b contact the model teeth 3 corresponding to the teeth to be corrected by the patient. Thus, the model tooth 3 is clamped by the cooperation of the contact members 21a and 21b. The position of the model tooth 3 in the state where the model tooth 3 is held by the model tooth holder 6 can be confirmed based on the operating states of the adjustment mechanism 92 and the position adjustment mechanism 9.

  After the model teeth 3 are held by the model tooth holder 6, when the heating means 16 is provided, the heating means 16 is used. When the heating means 16 is not provided, a heating tool such as cautery is used. The portion of the model gingiva 4 near the model tooth 3 is heated so that the model tooth 3 is movable with respect to the entire dentition model 2. Next, the shaft 131 is moved in the X direction by the X direction moving mechanism 141 to move the model tooth 3 held by the model tooth holder 6 in the X direction by a desired amount, and the shaft 131 is moved by the Y direction moving mechanism 142. By moving in the Y direction, the model teeth 3 held by the model tooth holder 6 are moved in the Y direction by a desired amount. In this way, the position of the model tooth 3 corresponding to the tooth to be corrected by the patient can be accurately adjusted to an appropriate position according to the stage of the correction treatment.

  The range of adjusting the position of the model tooth 3 corresponding to the tooth to be corrected by the model tooth position adjusting device 1 of this example is 2 mm from the original position to the target position of the model tooth 3 whose position is to be adjusted. Or 1 mm or less, or 0.5 mm or less. In addition, the data regarding the shape and the like of the dentition model 2 in which the position of the model tooth 3 is adjusted by the model tooth position adjusting device 1 of this example is obtained by imaging the dentition model 2 by a video scanner (scanner). It may be imported into a computer or the like.

  According to the model tooth position adjusting apparatus 1 of the present example, the pair of contact portions 11 and 12 that contact the model teeth 3 separated from each other of the dentition model 2 and sandwich the model teeth 3, respectively, An approach and separation mechanism 14 for approaching and separating the contact portions 11 and 12 from each other and an approach and separation mechanism 14 are provided so that the model teeth 3 are sandwiched between the portions 11 and 12. And a mounted portion 15 attached to the mounting portion 8 of the model tooth position adjusting apparatus 1 of the present example for adjusting the position of the model tooth 3 held between the teeth 12 with respect to the dentition model 2 excluding the model tooth 3. Therefore, the model teeth 3 corresponding to the teeth to be corrected by the patient can be reliably held by an appropriate clamping force.

  According to the model tooth position adjusting device 1, at least one of the contact portions 11 and 12 is elastically deformed along the surface shape of the model tooth 3 by being pressed against the model tooth 3 or by thermal softening. Since the heat softening member that deforms along the surface shape of the abutting model tooth 3 is provided, the area of the abutting portions 11 and 12 that abut against at least one model tooth 3 can be increased. Thus, the model teeth 3 having various shapes corresponding to the teeth to be corrected by the patient can be held more reliably.

  According to the model tooth position adjusting device 1, when further equipped with a heating means 16 for heating the softening model gingiva 4 of the dentition model 2 to soften, the baking for softening the model gingiva 4 is performed. It is possible to eliminate the need to separately prepare a heating tool such as a scissors and to eliminate the need to operate the model tooth position adjusting device 1 and the separate heating tool simultaneously. Can be adjusted easily.

  According to the model tooth position adjusting apparatus 1, the heating means 16 includes the heat generating parts 81 a and 81 b as at least one heat generating part in contact with the model gingival 4, so that the heat generating parts 81 a and 81 b are connected to the model gingival 4. The softening of the model gingiva 4 can be caused promptly by bringing it into contact with.

  According to the model tooth position adjusting apparatus 1, the fixing means 7 includes the fixing base 91 for fixing the dental model 2 and the magnet 96 provided on the fixing base 91. When the base 5 is provided with a magnet, iron or the like 95, the dentition model 2 can be attracted by the magnet 96 of the fixing means 7, so that the dentition model 2 is positioned with respect to the model tooth position adjusting device 1. It can be done easily.

  In the model tooth holder 6 of this example, the support arms 22a are moved closer to and away from the support arms 22b and the support arms 22b are moved closer to and away from the support arms 22a. Although an approach and separation mechanism 14 that approaches and separates from each other is provided, instead of this, the support arm 22a is fixed to the mounted portion 15 and the support arm 22b is moved toward and away from the support arm 22a. Accordingly, an approach and separation mechanism for bringing the contact portions 11 and 12 closer to and away from each other may be provided.

It is a whole explanatory view of an example of an embodiment of the invention. It is front explanatory drawing mainly of a model tooth holder of the example shown in FIG. It is III-III arrow explanatory drawing mainly of a model tooth holder shown in FIG. It is IV-IV arrow directional cross-sectional explanatory drawing mainly of a model tooth holder shown in FIG. FIG. 5 is a cross-sectional explanatory view of the model tooth holder shown in FIG. It is VI-VI arrow directional cross-sectional explanatory drawing mainly of a model tooth holder shown in FIG. FIG. 2 is an enlarged explanatory view mainly showing a fixing base, a contact portion, and a dentition model of the example shown in FIG. 1. It is explanatory drawing of the base of the dentition model fixed by the fixing means of the example shown in FIG. It is front explanatory drawing mainly of the other model holder of the example shown in FIG. It is side surface explanatory drawing of the other model holder mainly shown in FIG. FIG. 10 is an explanatory diagram of the use of another model holder mainly in the example shown in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Model tooth position adjustment apparatus 2 Dental row model 3 Model tooth 4 Model gingiva 6 Model tooth holder 7 Fixing means 8 Mounting part 9 Position adjustment mechanism 11, 12 Contact part 14 Approach and separation mechanism 15 Mounted part 16 Heating means

Claims (7)

  A pair of contact portions that respectively contact the model teeth separated from each other of the dentition model and sandwich the model teeth, and the pair of contact portions so that the pair of contact portions sandwich the model teeth. An approach and separation mechanism for approaching and separating, and a model tooth for adjusting the position of the model tooth sandwiched between the pair of abutting portions with respect to the dental model excluding the model tooth, provided with an approach and separation mechanism A model tooth holder comprising a mounted portion attached to a mounting portion of the position adjusting device.   The contact portion includes an elastic member that is elastically deformed along the surface shape of the model tooth by being pressed against the model tooth, or a heat softening member that is deformed along the surface shape of the model tooth that is contacted by thermal softening. The model tooth holder according to claim 1.   The model tooth holder according to claim 1 or 2, further comprising a heating means for heating to soften the thermosoftening model gingiva of the dentition model.   The model tooth holder according to claim 3, wherein the heating means includes at least one heat generating portion that contacts the model gingiva.   The model tooth holder according to any one of claims 1 to 4, a fixing means for fixing the dentition model, a mounting part for mounting a mounted portion of the model tooth holder, and a tooth fixed by the fixing means A model tooth position adjusting device comprising a position adjusting mechanism for adjusting the position of the mounting portion with respect to the row model.   The position adjustment mechanism intersects the X direction moving mechanism that moves the mounting portion in the X direction with respect to the dental model fixed by the fixing means, and the X direction with respect to the dental model fixed by the fixing means. Y direction moving mechanism for moving in the Y direction, Z direction moving mechanism for moving the mounting portion in the Z direction intersecting the X direction and Y direction with respect to the dentition model fixed by the fixing means, and fixing the mounting portion The model tooth position adjusting device according to claim 5, comprising at least one of a rotation mechanism that rotates the dental model fixed by the means.   The model tooth position adjusting device according to claim 5 or 6, wherein the fixing means includes a fixing base for fixing the dentition model and a magnet provided on the fixing base.

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