JP2006346195A - Model regulator for maxillary tooth row - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a model regulator for a maxillary tooth row capable of easily performing the appropriate construction and diagnosing, etc., of a part corresponding to a prosthesis and a denture of a maxilly tooth row model. <P>SOLUTION: A reference plate 20 where the maxillary tooth row model is to be mounted is provided, and a maxillary tooth row model mounting surface 21 in the reference plate 20 is turned to a spherical concave surface of a prescribed radius. Thus, the construction and diagnosing, etc., of the prosthesis and the denture in the maxillary tooth row model to be arrayed along a certain kind of a curved surface are performed with the spherical concave surface capable of representing the curved surface better as a reference. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a maxillary dentition model adjuster used together with an articulator when manufacturing a prosthesis or a denture of an upper jaw in a dental medical patient.

A dental prosthesis and a denture are constructed and adjusted in the upper dentition model so that an appropriate occlusion between the upper jaw and the lower jaw can be obtained. At that time, the maxillary dentition model adjuster is used together with the articulator. As this maxillary dentition model adjuster, one using a flat plate has been conventionally proposed (for example, see Patent Document 1). In this conventional maxillary dentition model adjuster (dental model adjustment plate), a flat plate having a flat mounting surface on which the maxillary dentition model is mounted is used. It can be tilted in the left-right direction. Then, with the inclination of the patient's virtual occlusal plane being reproduced on this plane plate according to a predetermined method, the maxillary dentition model controller is attached to the upper jaw mount of the articulator, and the maxillary teeth with reference to the inclined plane plate Construction or diagnosis of the part corresponding to the prosthesis or denture of the row model is performed.
Japanese Patent Laid-Open No. 2003-220079

  By the way, as shown in FIG. 1 (a), the upper jaw MX and the lower jaw MN of the human are arranged along a certain curved surface C1 (for example, Spee curve) from the anterior portion to the molar portion, Also in the left-right direction, teeth are arranged along a certain curved surface C2 (for example, Wilson curve) as shown in FIG. If the curved shape as described above is not maintained in the dentition of the maxilla MX and the dentition of the mandible MN to be occluded with each other, harmful lateral pressure may be applied to the molar portion or the like in the movement of the mandible MN.

  However, in the above-described conventional maxillary dentition model adjuster, although the tilt adjustment in the front-rear direction and the left-right direction is possible, the placement surface on which the maxillary dentition model is placed is flat (planar plate). Thus, the curved shape as described above has not been reproduced. For this reason, when constructing or diagnosing a portion corresponding to the prosthesis or denture of the maxillary dentition model mounted on the upper jaw mount of the articulator with reference to the plane plate, the prosthesis or denture is the lower jaw tooth In order to be able to be properly occluded in the row, the experience and advanced skills of a dentist and a dental technician are required, and proper diagnosis of the prosthesis and denture has been difficult.

  The present invention has been made in view of the circumstances as described above, and provides an upper dentition model controller that can easily perform proper construction and diagnosis of a portion corresponding to a prosthesis or a denture of the upper dentition model. To do.

  The maxillary dentition model adjuster according to the present invention includes a reference plate on which the maxillary dentition model is placed, and the placement surface of the maxillary dentition model on the reference plate is a spherical concave surface having a predetermined radius; Become.

  With such a configuration, the placement surface on which the maxillary dentition model is placed on the reference plate is a spherical concave surface with a predetermined radius, so in the maxillary dentition model to be arranged along a certain curved surface The construction and diagnosis of a prosthesis and a denture can be performed based on the spherical concave surface.

  In the maxillary dentition model adjuster according to the present invention, an intersection of a straight line connecting the left second premolar and the right first premolar and a straight line connecting the left first premolar and the right second premolar It can be set as the structure which set the center of the said spherical concave surface on the line extended perpendicularly upward from the point on the said mounting surface mentioned above.

  With such a configuration, the intersection between the straight line connecting the left second premolar and the right first premolar and the left first premolar and the right second premolar can be a point on the midline, and the maxilla This is the lowest point of the spherical concave surface (placement surface) on which the dentition model is to be placed. Such a spherical concave surface could be closer to the curved surface that the upper dentition of many dental patients should follow.

  Furthermore, in the maxillary dentition model adjuster according to the present invention, the radius of the spherical concave surface may be set to a value within a range of 124 mm ± 5%.

  With such a configuration, the spherical concave surface on which the maxillary dentition model should be placed could better represent the curved surface along which the maxillary dentition of many dental patients should follow.

  Further, the maxillary dentition model adjuster according to the present invention may be configured to have an adjusting mechanism for adjusting the height of the reference plate.

  With such a configuration, the height of the reference plate can be adjusted, so that the dentition tip of the maxillary dentition model mounted on the upper jaw mount of the articulator follows the spherical concave surface (mounting surface) of the reference plate. So that it can be set easily.

  Further, in the maxillary dentition model adjuster according to the present invention, a support pin capable of projecting and retracting at a predetermined position in the left-right direction center of the front end portion of the placement surface is provided, and a longitudinal direction is provided at the rear end portion of the placement surface. It is possible to adopt a configuration in which a support bar that is movable and retractable from the mounting surface is provided and that extends in the lateral direction.

  With such a configuration, the maxillary dentition model is supported by the support pin protruding from the front end portion of the placement surface and the support bar adjusted in the front-rear direction at the rear end portion of the placement surface. The maxillary dentition model can be mounted on the upper jaw mount portion of the articulator while the dentition model and the spherical concave surface (mounting surface) of the reference plate are held in a predetermined positional relationship. Then, after mounting the maxillary dentition model on the upper jaw mount of the articulator, the maxillary dentition model adjuster in a state where the support pin is immersed in the placement surface and the support bar is retracted from the placement surface Is attached to the lower arm of the articulator, so that the dentition of the mounted maxillary dentition model can be arranged along the placement surface.

  Furthermore, in the maxillary dentition model adjuster according to the present invention, the support pin may be provided at a position expected as the position of the maxillary incisor papilla.

  With such a configuration, the portion corresponding to the incisor papilla of the maxillary dentition model can be supported by the support pin, and the portion corresponding to the left and right Hammer's notches of the maxillary dentition model can be supported by the support bar. Because it is possible, the maxillary dentition model can be mounted on the maxillary mount of the articulator while supported by the incisor papilla, which is said to have little anatomical change, and the Hammer notch. . As a result, the maxillary dentition model can be mounted on the maxillary mount of the articulator with good reproducibility.

  Further, the maxillary dentition model adjuster according to the present invention has a configuration in which a line extending toward the center of the spherical concave surface is formed at a position expected as a position of each tooth of the maxilla on the peripheral side surface of the reference plate. be able to.

  With such a configuration, with the maxillary dentition model placed on the spherical concave surface (placement surface) of the reference plate, the prosthesis and the denture of the maxillary dentition model with reference to the line corresponding to each tooth Corresponding parts can be constructed and diagnosed.

  In the maxillary dentition model adjuster according to the present invention, a reference line extending in the vertical direction through the position of the rear end surface of the reference plate corresponding to the center in the left-right direction of the placement surface is formed. Can do.

  With such a configuration, the center line in the left-right direction of the maxillary dentition model, that is, the median line is defined on the mounting surface with reference to the reference line formed on the rear end surface of the reference plate as viewed from the rear of the reference plate. It becomes easy to match the center line in the left-right direction.

  Further, in the maxillary dentition model adjusting device according to the present invention, the dentition of the maxillary dentition model is arranged in a state where the horizontal center line of the placement surface and the midline of the maxillary dentition model are matched. A reference line indicating the position to be formed may be formed on the placement surface.

  With this configuration, when the maxillary dentition model is placed on the placement surface in a state where the horizontal center line of the placement surface and the midline of the maxillary dentition model are matched, the dentition of the maxillary dentition model It becomes possible to easily construct and diagnose a prosthesis or a denture in the maxillary dentition model with reference to a reference line indicating a position where the should be placed.

  According to the maxillary dentition adjuster according to the present invention, the construction and diagnosis of a prosthesis and a denture in an maxillary dentition model to be arranged along a certain kind of curved surface can be performed based on the spherical concave surface. Therefore, it is possible to easily construct the part corresponding to the prosthesis and denture of the maxillary dentition model so that no harmful side pressure is applied to the molar part etc. Judgment and the like can be easily performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The maxillary dentition model adjuster according to one embodiment of the present invention is configured as shown in FIGS. 2 is a side view showing a state where the maxillary dentition model adjuster is attached to the articulator, FIG. 3 is a front view of the maxillary dentition model adjuster, and FIG. 4 is a diagram of the maxillary dentition model adjuster. FIG. 5 is a rear view, and FIG. 5 is a plan view of the maxillary dentition model adjuster.

  As shown in FIG. 2, the maxillary dentition model adjuster 100 that is attached to the articulator 200 and used for occlusal adjustment has a structure in which the reference plate 20 is supported by the support base 10. The support base 10 is provided with an adjustment dial 12 and accommodates an elevating mechanism (height adjustment mechanism) (not shown) coupled to the adjustment dial 12. The reference plate 20 is moved up and down by the operation of the lifting mechanism in accordance with the rotation operation of the adjustment dial 12. A plate 11 is fixed to the bottom of the support base 10 with bolts 13a and 13b (see FIG. 3). In addition, the indicator needle 25 hangs down from the bottom surface of the reference plate 20 along the front surface of the support base 10, and a scale indicating the height is provided on the front surface of the support base 10 (see FIG. 3). ).

  The upper surface of the reference plate 20 is a placement surface 21 on which the maxillary dentition model is to be placed, and the placement surface 21 is a spherical concave surface having a predetermined radius as described later. Since the mounting surface 21 on which the upper dentition model of the reference plate 20 is to be placed is a spherical concave surface, the upper dentition model adjuster 100 is used as a reference plate as in the prior art. It distinguishes from what is used, and it is called an "occlusion adjustment curved plate".

  Guide grooves 22 extending to the rear end face are formed on both side faces of the reference plate 20 with an inclination corresponding to the inclination of the occlusal plane (for example, 6 degrees with respect to the horizontal) (see FIGS. 2 and 4). Two moving blocks 30 are arranged so as to sandwich both side surfaces of the reference plate 20. A support bar 31 is spanned between the moving blocks 30 so as to be orthogonal to the horizontal center line SL02 of the mounting surface 21 (extend in the horizontal direction) (see FIG. 5). Is fixed to the upper end surface of the moving block 30 with screws. The support bar 31 has an L-shaped cross section (see FIG. 2 and FIG. 7 described later), and has a support edge portion 31a protruding upward.

  Each moving block 30 has slide pins 32a and 32b separated in the front-rear direction, and each slide pin 32a and 32b is slidably fitted in a guide groove 22 formed on a side surface of the reference plate 20. . The guide groove 22 is formed such that a predetermined portion on the side of the rear end face of the reference plate 20 is shallower than the front portion, and the rear slide pin 32a can pass through the shallow predetermined portion and escape from the guide groove 22. On the other hand, the slide pin 32b on the front side is prevented from coming off at the boundary between the shallow predetermined portion and the portion ahead thereof. By moving each moving block 30 in the front-rear direction while the slide pins 32a, 32b are guided by the guide grooves 22, the support bar 31 moves in the front-rear direction at the rear end portion of the placement surface 21. Since the guide groove 22 is formed with an inclination corresponding to the inclination of the occlusal plane as described above, the support bar 31 can move parallel to the occlusal plane. Further, when each moving block 30 is retracted to the position where the slide pin 32b is prevented from slipping out and the slide pin 32a escapes from the guide groove 22, the moving block 30 is rotated counterclockwise around the slide pin 32b. The support bar 31 is retracted from the placement surface 21 (see FIGS. 12 and 13 described later).

  A support pin 23 extending vertically upward is provided at the front end of the reference plate 20. The support pin 23 can protrude and retract from the placement surface 21 and can be fixed by a screw 24 provided on the front end surface of the reference plate 20. Thereby, the protrusion height from the mounting surface 21 of the support pin 23 can be adjusted and fixed with the screw 24. As shown in FIG. 4, a reference line SO <b> 1 extending in the vertical direction is formed on the rear end surface of the reference plate 20 so as to correspond to the horizontal center line L <b> 02 (see FIG. 5) of the placement surface 21.

The spherical concave surface of the mounting surface 21 is formed as follows.
As shown in FIG. 6, the intersection point P of the straight line L1 connecting the left second premolar and the right first premolar and the straight line L2 connecting the left first premolar and the right second premolar is the median line Lc. It can be considered as a reasonable reference point for mandibular movement such as canine guidance. Therefore, as shown in FIGS. 5, 7 and 8, the straight line connecting the left second premolar (P27) and the right first premolar (P14), the left first premolar (P24) and the right The center O of the spherical concave surface is set on a line Lo extending vertically upward from the point Po of the mounting surface 21 that is expected to intersect with the straight line connecting the second molar (P17). That is, the point Po of the mounting surface 21 is the lowest point of the spherical concave surface. Further, the point Po is on the center line SL02 in the left-right direction of the placement surface 21.

  The center O of the spherical concave surface (mounting surface 21) was finally determined so that the radius SR of the spherical concave surface was 124 mm. Such a spherical concave surface is a better representation of the curved surface (see FIG. 1) that the maxillary dentition should follow, based on the results obtained by the inventors collecting and examining the dentitions of many dental patients. . However, it was confirmed that the radius SR of the spherical concave surface can be set within a range of 124 mm ± 5% in consideration of age, sex, jawbone structure, and the like.

  As described above, the intersection point P of the straight line L1 connecting the left second premolar and the right first premolar and the straight line L2 connecting the left first premolar and the right second premolar and the intersection P as the maxillary dentition. The point Po set on the mounting surface 21 of the reference plate 20 reproduced in the model adjuster 100 (the occlusion adjustment curved plate) can be regarded as a reasonable reference point for mandibular movement, and is therefore referred to as “occlusion origin”.

  As described above, the position of the support pin 23 provided at the front end portion of the reference plate 20 so as to be able to project and retract from the placement surface 21 is located at the center line SL02 in the left-right direction of the placement surface 21 as shown in FIG. It is set to a position expected as the position of the incisor papilla of the maxillary dentition model when the midline of the row model is aligned and placed on the placement surface 21. Further, as shown in FIG. 5, the median line of the maxillary dentition model and the horizontal center line SL02 are aligned on the mounting surface 21 of the reference plate 20, and the incisor papilla is aligned with the position of the support pin 23. When the maxillary dentition model is placed on the placement surface 21, two reference lines CS1 and CS2 representing the range in which each tooth is expected to be arranged are drawn. It should be noted that markers P11 to P17 and P21 to P27 representing the arrangement positions of the teeth are also drawn on the reference line CS1.

  Further, as shown in FIGS. 7 and 8, on the peripheral side surface of the reference plate 20, a reference line extending toward the center 0 of the spherical concave surface (mounting surface 21) is provided at a position expected as the position of each tooth of the upper jaw. As depicted, the peripheral side surface is cut. Specifically, as shown in FIG. 7, when the reference plate 20 is viewed from the side, the reference lines SL17 (corresponding to P17 and P27 in FIG. 5), SL16 (corresponding to P16 and P26 in FIG. 5) SL15 (corresponding to P15 and P26 in FIG. 5), SL14 (corresponding to P14 and P24 in FIG. 5), SL13 (corresponding to P13 and P23 in FIG. 5), SL12 (corresponding to P12 and P22 in FIG. 5) and SL11 Cutting is performed so that (corresponding to P11 and P21 in FIG. 5) can be visually recognized. As shown in FIG. 8, when the reference plate 20 is viewed from the front, its reference lines SL27 (corresponding to P17 and P27 in FIG. 5), SL26 (corresponding to P16 and P26 in FIG. 5), SL25 (FIG. 5 corresponds to P15 and P26 in FIG. 5, SL24 (corresponds to P14 and P24 in FIG. 5), SL23 (corresponds to P13 and P23 in FIG. 5), SL22 (corresponds to P12 and P22 in FIG. 5), and SL21 (in FIG. 5). Cutting is applied so that (corresponding to P11 and P21) can be visually recognized.

  Returning to FIG. 2, the structure of the articulator 200 to which the above-described maxillary dentition model controller 100 (occlusion adjustment curved plate) is mounted will be briefly described. The articulator 200 has the same basic structure as a generally known articulator.

  In FIG. 2, the articulator 200 includes a support 210, a lower arm 220 fixed so as to be disposed at a right angle to the support 210 at the lower end of the support 210, and a shaft 211 at the upper end of the support 210. And an upper arm portion 230 provided so as to be movable. An upper jaw mount 231 is detachably fixed to the inner side surface of the upper arm 230 by a fixing screw 232. An incisal pin 233 extending in the vertical direction is fixed to the distal end portion of the upper arm portion 230, and the distal end of the insisal pin 233 comes into contact with a receiving member 221 attached to the distal end of the lower arm portion 220. Further, an upper dentition model controller 100 (an occlusal adjustment curved plate) is detachably provided on the upper surface of the lower arm 220. The maxillary dentition model controller 100 (occlusal adjustment curved plate) is fixed by a fixing screw 40 that is screwed into the plate 11.

  Using the maxillary dentition model adjuster 100 (occlusion adjustment curved plate) and the articulator 200 described above, for example, as follows, construction and diagnosis of a portion corresponding to the prosthesis and denture of the maxillary dentition model Can be performed.

  First, as shown in FIGS. 9 and 10, the incisor papilla (see FIG. 6) of the maxillary dentition model 300 is attached to the support pin 23 in a state where the support pin 23 protrudes from the mounting surface 21 of the reference plate 20. The movable block 30 is moved and adjusted in the front-rear direction so that both the Hammeller notches (see FIG. 6) of the maxillary dentition model 300 are supported by the support edge portion 31 a of the support bar 31. At this time, the plane (HIP plane) formed by the incisor papilla (corresponding to the tip of the support pin 31) and both Hammer's notches (edge tip of the support edge portion 31a) is parallel to the occlusal plane (for example, horizontally) The protrusion height of the support pin 23 is adjusted so that the inclination is 6 degrees.

  When the maxillary dentition model 300 is supported by the support pins 23 and the support bar 31, as shown in FIG. 10, the median line Lc previously drawn on the maxillary dentition model 300 and the rear end face of the reference plate 20 are drawn. The position of the maxillary dentition model 300 is also adjusted so that the reference line SL01 matches. Thereby, the median line Lc of the maxillary dentition model 300 and the center line SL02 in the left-right direction of the reference plate 20 (see FIG. 5) coincide.

  With the upper dentition model 300 supported by the support pin 23 and the support bar 31 as shown in FIG. 11, the upper dentition model adjuster 100 (occlusion adjustment bending plate) is mounted on the articulator 200. Then, the maxillary dentition model 300 is attached (mounted) to the upper jaw mount portion 231 of the upper arm portion 230 by, for example, plaster or the like. In this state, the maxillary dentition model adjuster 100 (the occlusal adjustment curved plate) is removed from the articulator 200. Then, similarly to the general occlusal adjustment work, the lower jaw dentition model is mounted on the lower arm portion 220 of the articulator 200, and the occlusion state with the upper jaw dentition model 300 is confirmed.

  Thereafter, the lower dentition model is removed from the lower arm 220 of the articulator 200, and the upper dentition model controller 100 (occlusion adjustment curved plate) is mounted on the lower arm 200 of the articulator 200 again. At this time, as shown in FIG. 12, the moving block 30 is moved backward to retract the support bar 31 from the mounting surface 21 of the reference plate 20. Then, as shown in FIG. 12, the adjustment dial 12 is rotated to raise the reference plate 20 until the dentition of the maxillary dentition model 300 contacts the placement surface 21 that is a spherical concave surface.

  In this way, the prosthesis of the maxillary dentition model 300, a portion corresponding to the denture, and the like are constructed in a state where the dentition of the maxillary dentition model 300 is in contact with the placement surface 21 that is a spherical concave surface. At that time, the portion corresponding to the prosthesis and the denture of the maxillary dentition model 300 based on the spherical concave surface of the mounting surface 21 that better represents a certain curved surface that the dentition of the maxillary dentition model 300 should follow. Construction can be performed. For this reason, it becomes possible to easily perform proper construction or the like of the portion corresponding to the prosthesis or the denture.

  Further, as shown in FIG. 13, the reference plate 20 has a side surface of the reference plate 20 with reference lines SL11 to SL17 (including reference lines SL21 to SL27 shown in FIG. 8) representing positions and directions in which the teeth are arranged. The arrangement position and orientation of the prosthesis and the like can also be confirmed, and the construction work and the like of the prosthesis can be performed more easily. Further, as shown in FIG. 5, two reference lines CS <b> 1 and CS <b> 2 representing a range where each tooth is expected to be arranged are drawn on the placement surface 21, and the reference lines CS <b> 1 and CS <b> 2 are also used as the reference. Thus, an appropriate position of the prosthesis or the like can be confirmed, and the construction work can be performed more easily.

  In the maxillary dentition model controller 100 (occlusion adjustment curved plate) according to the embodiment of the present invention, the HIP surface (see FIGS. 9 and 10) is engaged by the support bar 31 (support edge portion 31a) and the support pin 23. The relative positional relationship between the dentition of the maxillary dentition model 300 and the placement surface 21 (spherical concave surface) of the reference plate 20 is set so as to be parallel to the plane. If such a positional relationship can be set using a separate instrument not attached to the maxillary dentition model adjuster 100 (if the maxillary dentition model 300 can be mounted on the articulator 200), the maxillary dentition model adjuster 100 is supported. There is no need to provide the bar 31 and the support pin 23. However, it is preferable that the support bar 31 and the support pin 23 as described above are provided in the maxillary dentition model adjuster 100 (the occlusal adjustment curved plate) in that no separate instrument is required.

  The maxillary dentition model adjuster according to the present invention has an effect that the proper construction and diagnosis of a portion corresponding to a prosthesis or a denture of the maxillary dentition model can be easily performed. It is useful as a maxillary dentition model adjuster used with an articulator when manufacturing objects and dentures.

It is a figure which shows the occlusal state of a person's upper jaw and lower jaw. It is a side view which shows the state which attached the maxillary dentition model controller which concerns on one Embodiment of this invention to the articulator. It is a front view which shows the upper jaw model dentition model regulator which concerns on one Embodiment of this invention. It is a rear view which shows the maxillary dentition model controller which concerns on one Embodiment of this invention. It is a top view which shows the maxillary dentition model controller which concerns on one Embodiment of this invention. It is a figure which shows an example of an actual maxillary tooth row | line | column. FIG. 6 is a side view showing a placement surface (spherical concave surface) of a reference plate and a reference line formed on the reference plate in the maxillary dentition model adjuster shown in FIGS. 2 to 5. FIG. 6 is a front view showing a placement surface (spherical concave surface) of a reference plate and a reference line formed on the reference plate in the maxillary dentition model adjuster shown in FIGS. 2 to 5. It is a side view which shows the state which supported the upper jaw dentition model with the support bar and support pin which were provided in the reference | standard board. It is a rear view which shows the state which supported the maxillary dentition model with the support bar and support pin which were provided in the reference | standard board. It is a side view which shows the state which mounted the maxillary dentition model in the articulator using the maxillary dentition model regulator. It is a side view which shows the state which attached the maxillary dentition model regulator again to the articulator in which the maxillary dentition model was mounted. It is a side view which shows the state by which the upper dentition model was mounted on the mounting surface of a reference | standard board, when constructing a prosthesis, a denture, etc. of an upper dentition model.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Support stand 11 Plate 12 Adjustment dial 13a, 13b Bolt 20 Reference | standard board 21 Mounting surface (spherical concave surface)
22 Slide groove 23 Support pin 25 Pointer needle 30 Moving block 31 Support bar 31a Support edge portion 32a, 32b Slide pin 40 Fixing screw 100 Maxillary dentition model adjuster 200 Occlusal device 210 Column 211 Axis 220 Lower arm portion 221 Receiving portion 230 Upper Arm 231 Upper jaw mount 232 Fixing screw 233 Insal pin

Claims (9)

A reference plate on which the maxillary dentition model is placed;
A maxillary dentition model adjuster characterized in that a mounting surface of the maxillary dentition model on the reference plate is a spherical concave surface having a predetermined radius.   It extends vertically upward from a point on the placement surface described above, which is an intersection of a straight line connecting the left second premolar and the right first premolar and a straight line connecting the left first premolar and the right second premolar. The maxillary dentition model adjuster according to claim 1, wherein the center of the spherical concave surface is set on a line.   3. The maxillary dentition model adjuster according to claim 2, wherein the radius of the spherical concave surface is set to a value within a range of 124 mm ± 5%.   The maxillary dentition model adjuster according to any one of claims 1 to 3, further comprising an adjustment mechanism for adjusting a height of the reference plate. A support pin capable of protruding and retracting at a predetermined position in the left-right direction center of the front end portion on the placement surface is provided
5. The support bar according to claim 1, further comprising a support bar that is movable in the front-rear direction and retractable from the placement surface and extends in the lateral direction at a rear end portion of the placement surface. Maxillary dentition model adjuster.   6. The maxillary dentition model adjuster according to claim 5, wherein the support pin is provided at a position expected as a position of the incisor papilla of the maxilla.   7. The reference line extending toward the center of the spherical concave surface is formed at a position expected as a position of each tooth of the upper jaw on the peripheral side surface of the reference plate. Maxillary dentition model adjuster.   The maxillary tooth according to any one of claims 1 to 7, wherein a reference line extending in a vertical direction is formed on a rear end surface of the reference plate so as to correspond to a center line in the left-right direction of the placement surface. Column model adjuster A reference line indicating the position where the dentition of the maxillary dentition model is to be arranged is formed on the locating surface in a state where the center line in the left-right direction of the placement surface and the midline of the maxillary dentition model are matched. The maxillary dentition model adjuster according to any one of claims 1 to 8, wherein

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