JP2013052169A - Upper jaw dentition model adjuster and upper jaw dentition model adjustment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upper jaw dentition model adjuster allowing adjustment or diagnosis of an upper jaw dentition model suitable for each individual.SOLUTION: This upper jaw dentition model adjuster includes: a reference plate 20 wherein a face 21a placed with the upper jaw dentition model 50 is a spherical concave face; reference plate support mechanisms 10, 11, 12, 13 swingably supporting the reference plate 20 around a shaft extending in a direction to be the left and right direction of the upper jaw dentition model 50 in a position corresponding to the downmost point of the spherical concave face of the reference plate 20; and inclination maintenance mechanisms 14, 15, 15a maintaining the inclination state of the reference plate 20 supported by the reference plate support mechanisms in a state in which the reference plate 20 is swung around the shaft and is inclined.

Description

  The present invention relates to a maxillary dentition model adjuster used together with an articulator when manufacturing an upper prosthesis or a denture of a dental medical patient, and a dentition model adjusting method for adjusting the maxillary dentition model.

  The dental prosthesis and denture are constructed and adjusted so as to obtain an appropriate occlusion between the upper jaw and the lower jaw. At that time, the maxillary dentition model adjuster is used together with the articulator. The inventor of the present patent application has already proposed a maxillary dentition model adjuster (see Patent Document 1). This maxillary dentition model adjuster has a structure including a reference plate having a spherical concave surface on which the maxillary dentition model is placed. By using such a maxillary dentition adjuster, the prosthesis in the maxillary dentition model to be arranged along some kind of curvature surface (for example, Spee curve or Wilson curve), similar to human maxillary dentition. Since the construction and diagnosis of objects and dentures can be performed based on the spherical concave surface, prosthesis of the maxillary dentition model so that no harmful lateral pressure is applied to the anterior teeth and molars during mandibular movement A part corresponding to an object or a denture can be easily constructed, and appropriate judgment or the like can be easily performed.

Japanese Patent No. 4468247

  By the way, the occlusal plane between the upper jaw and the lower jaw of an individual (person) is a predetermined reference plane, for example, a plane formed by connecting three points of the left or right orbital cave lower point (oral cave lower hole) and the outer ear canal upper edge. It can be defined with reference to a certain plane in Frankfurt. For example, the maxillary dentition model is mounted on the upper arch of the articulator so as to reproduce the relative positional relationship (angle) of the upper jaw with respect to the skull (Frankfurt plane) by the face bow transfer method. In this way, the maxillary dentition model can be attached to the articulator so as to reproduce the relative positional relationship (angle) of the maxilla with respect to the bone (Frankfurt plane) of the individual (person). The conventional maxillary dentition model adjuster cannot adjust the dentition of the maxillary dentition model or the inclination of the reference plate as a reference for diagnosis, so that it is suitable for each individual (person). Adjustment and diagnosis of the dentition model is difficult.

  The present invention has been made in view of such circumstances, and provides an upper dentition model adjuster that enables adjustment and diagnosis of an upper dentition model suitable for each individual.

  The present invention also provides a maxillary dentition model adjustment method that can easily adjust the maxillary dentition model suitable for each individual using the maxillary dentition model adjuster.

  The maxillary dentition model adjuster according to the present invention includes a reference plate on which a surface on which the maxillary dentition model is placed is a spherical concave surface, and the maxillary teeth at a position corresponding to the lowest point of the spherical concave surface of the reference plate A reference plate support mechanism that supports the reference plate so as to be freely slidable about an axis extending in a direction that should be the left and right direction of the row model, and a reference plate support mechanism that is oscillated and inclined about the axis. An inclination maintaining mechanism for maintaining the inclination state of the supported reference plate is provided.

  With such a configuration, the reference plate can swing around an axis extending in a direction to be the left and right direction of the maxillary dentition model at a position corresponding to the lowest point of the spherical concave surface of the reference plate, Since the reference plate is maintained in a tilted state by the peristaltic movement, the spherical concave surface of the reference plate in a state inclined at a desired angle with respect to a predetermined reference plane (for example, corresponding to the upper arch of the articulator) is used as a reference. Thus, adjustment and diagnosis of the maxillary dentition model can be performed.

  In particular, the reference plate swings around the axis extending in the left-right direction of the maxillary dentition model at a position corresponding to the lowest point of the spherical concave surface of the reference plate. The part of the spherical concave surface in the front-rear direction can be tilted with a good balance.

  The maxillary dentition model adjuster according to the present invention may include an angle indicator that displays an inclination angle of the reference plate supported by the reference plate support mechanism.

  With such a configuration, the tilt angle of the perturbed reference plate can be clearly known, so that the reference plate can be accurately adjusted to a desired angle with respect to a predetermined reference plane (for example, corresponding to the upper bow of the articulator). Can be tilted well.

  Further, in the maxillary dentition model adjuster according to the present invention, the upper dentition model is supported so as to be integrated with the reference plate and positioned above the reference plate, and the support of the upper dentition model is released. It can be set as the structure which has a possible maxillary dentition model support mechanism.

  With such a configuration, the reference plate is inclined at a desired angle with respect to a predetermined reference plane (for example, corresponding to the upper arch of the articulator) while the upper dentition model is supported by the upper dentition model support mechanism. When it is allowed, the maxillary dentition model also tilts at a desired angle with respect to the predetermined reference plane.

  Furthermore, in the maxillary dentition model adjuster according to the present invention, the maxillary dentition model support mechanism includes a support pin that supports a position corresponding to the incisor papilla of the maxillary dentition model, and left and right of the maxillary dentition model. It can be set as the structure which has a support bar which supports the position corresponding to a Hammerer notch.

  With this configuration, the maxillary dentition model is supported by the support pins at the positions corresponding to the incisor papilla and the support bars at the positions corresponding to the left and right Hammer notches so as to be positioned above the reference plate. Is done. In this state, when the reference plate is tilted at a desired angle with respect to a predetermined reference plane (for example, corresponding to the upper arch of the articulator), the upper dentition model also has a desired angle with respect to the predetermined reference plane. It becomes inclined.

  An upper dentition model adjusting method according to the present invention includes an angle measurement step for measuring an angle formed by an occlusal plane between an upper jaw and a lower jaw of an individual and a Frankfurt plane, and a reference plate having a surface on which the upper dentition model is placed. A reference plate support mechanism that supports the reference plate in a freely swingable manner around a shaft extending in a direction that should become the left-right direction of the maxillary dentition model at a predetermined position of the reference plate, and about the shaft A maxillary dentition model adjuster having a tilt maintaining mechanism for maintaining the tilted state of the reference plate supported by the reference plate supporting mechanism in a tilted and tilted state, and installed on the lower arch of the articulator Reference plate inclination setting for maintaining the reference plate to be tilted by swinging around the axis so that the angle of inclination of the reference plate in the maxillary dentition model adjuster becomes the measured angle. Step and said A maxillary dentition model setting step for setting the maxillary dentition model on the upper arch of the articulator in a state where the inclination of the maxillary dentition model with respect to the upper arch of the combined device is at the measured angle; And an adjustment step of adjusting the dentition of the maxillary dentition model installed on the upper arch of the articulator with reference to the surface of the reference plate.

  Further, the method for adjusting the upper dentition model according to the present invention includes an angle measuring step for measuring an angle formed by the occlusal plane between the upper jaw and the lower jaw of the individual and the Frankfurt plane, The reference plate inclination maintained by tilting the reference plate around the axis so that the inclination angle of the reference plate in the upper dentition model adjuster is the measured angle. A maxillary tooth for setting the maxillary dentition model on the upper arch of the articulator in a state where the setting step and the inclination of the maxillary dentition model with respect to the upper arch of the articulator are at the measured angle A row model setting step and an adjustment step of adjusting the maxillary dentition model placed on the upper arch of the articulator with reference to the spherical concave surface of the reference plate are provided.

  With these configurations, the angle between the occlusal plane of the individual's upper and lower jaws and the Frankfurt plane is measured, and the maxillary dentition model installed on the lower arch of the articulator is adjusted to the measured angle. The maxillary dentition model is installed on the upper arch of the articulator while the reference plate of the instrument is tilted, and the inclination of the maxillary dentition model with respect to the upper arch of the articulator is at the measured angle. In this state, the maxillary dentition model is adjusted with reference to the spherical concave surface of the reference plate, so that both the inclination of the reference plate and the inclination of the maxillary dentition model are related to the upper and lower jaws of the individual. The upper dentition model can be adjusted with reference to the surface of the reference plate or the spherical concave surface in a state adjusted to the angle formed by the occlusal plane and the Frankfurt plane.

  In the upper dentition model adjustment method according to the present invention, in particular, the upper dentition model is supported so as to be integrated with the reference plate and located above the reference plate, and the support of the upper dentition model is released. Using an upper dentition model adjuster having a possible upper dentition model support mechanism, the inclination angle of the reference plate is measured while the upper dentition model support mechanism supports the upper dentition model. In this state, the upper jaw dentition model is placed on the upper arch of the articulator, and the upper jaw is placed. By releasing the support of the upper dentition model of the dentition model support mechanism, the reference plate inclination setting step and the upper dentition model setting step can be performed.

  With such a configuration, with the upper dentition model supported by the upper dentition model support mechanism, by tilting the reference plate to the measured angle, the upper dentition model is moved together with the reference plate itself. Since it can be tilted to the measured angle, the reference plate tilt setting step for maintaining the reference plate in a tilted state, and the tilt of the maxillary dentition model with respect to the upper arch of the articulator to become the measured angle. In addition, the maxillary dentition model installing step of installing the maxillary dentition model on the upper arch of the articulator can be performed more efficiently.

  In the upper dentition model adjustment method according to the present invention, the angle measurement step may be configured to measure an angle formed by the occlusal plane and the Frankfurt plane from an X-ray standard photographic image of the head of an individual. it can.

  With such a configuration, since the angle between the occlusal plane and the Frankfurt plane is measured from the X-ray standard photographic image (cephalometric X-ray image) of the head of the individual, a troublesome work such as face bow transfer is required. The angle (numerical value) can be easily and accurately measured.

  According to the maxillary dentition model adjuster according to the present invention, the spherical concave surface of the reference plate in a state inclined at a desired angle with respect to a predetermined reference plane (for example, corresponding to the upper arch of the articulator) is used as a reference. Since the maxillary dentition model can be adjusted and diagnosed, the relative position (angle) of the upper jaw with respect to the bone (Frankfurt plane) of the individual (person) can be reproduced more faithfully in the articulator. Therefore, it is possible to adjust and diagnose the maxillary dentition model suitable for each individual.

  Further, according to the maxillary dentition adjusting method according to the present invention, the inclination of both the reference plate and the maxillary dentition model of the maxillary dentition model adjuster installed in the articulator is measured with the individual maxilla and mandible. The maxillary dentition model can be adjusted with reference to the surface of the reference plate in the state adjusted to the angle between the occlusal plane and the Frankfurt plane, so that the bone of the individual (person) head (Frankfurt plane) in the articulator The relative positional relationship (angle) of the upper jaw with respect to can be reproduced more faithfully, and the upper dentition model suitable for each individual can be easily adjusted.

It is a perspective view which shows the maxillary dentition model adjuster which concerns on one Embodiment of this invention. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from back diagonally downward. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from upper direction. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from the front. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from back. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from the left side. It is a figure which shows the state which looked at the maxillary dentition model adjuster shown in FIG. 1 from the right side. It is a figure which shows the relationship between the spherical concave surface of the reference | standard board in a maxillary dentition model regulator, and a peristaltic support bar. It is a figure which shows the occlusion state (the 1) with the upper jaw and the lower jaw of an individual (person). It is a figure which shows the occlusion state (the 2) with the upper jaw and the lower jaw of an individual (person). It is a figure which shows the peristaltic state of the reference | standard board in a maxillary dentition model adjuster. It is a figure which shows the state which the reference | standard board in the maxillary dentition model adjuster inclined. It is a figure which shows the relationship between the occlusal plane of an individual's (person) upper jaw and lower jaw, and a Frankfurt plane. It is a figure which shows the state of the occlusal plane in the said articulator at the time of aligning a Frankfurt plane with the upper arch of an articulator. It is a figure which shows the state which set the maxillary dentition model regulator shown in FIG. 1 to the lower arch of an articulator. It is a figure which shows an example of the state which set the maxillary dentition model with the support pin and support bar of the maxillary dentition model adjuster. It is a figure which shows the state which looked at the maxillary dentition from the inside. It is a figure which shows an example of the articulator with which both the maxillary dentition model regulator and the maxillary dentition model were mounted | worn.

  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. 1 is a perspective view showing the maxillary dentition model adjuster, FIG. 2 is a view of the maxillary dentition model adjuster as viewed obliquely from the lower rear, and FIG. 3 shows the maxillary dentition model adjuster from above. 4 is a view of the maxillary dentition model adjuster as viewed from the front, FIG. 5 is a view of the maxillary dentition model adjuster as viewed from the rear, and FIG. 6 is an adjustment of the maxillary dentition model. FIG. 7 is a view of the device viewed from the left side, and FIG. 7 is a view of the maxillary dentition model adjuster viewed from the right side.

  1 to 7, the maxillary dentition model adjuster 100 has a structure in which a support plate 11 is fixed on a support base 10 and a reference plate 20 is slidably supported on the support plate 11. Yes. Specifically, a bracket 13 having a U-shaped cross section is fixed to the front end portion of the support plate 11 (refer to FIGS. 2, 4, 6 and 7 in particular) and fixed to a predetermined position on the back surface of the reference plate 20. A swing support bar 12 (see particularly FIGS. 3 and 4) is supported by the bracket 13 so as to be freely swingable. In this way, the reference plate 20 is freely movable about the axis Ls of the swing support bar 12 by the reference plate support mechanism configured by the support base 10, the support plate 11, the swing support bar 12, and the bracket 13. So that it is supported.

  The support base 10 is provided with an adjustment dial 16 and an elevating mechanism (not shown) coupled to the adjustment dial 16. The reference plate 20 is moved up and down together with the support plate 11, the bracket 13 and the peristaltic support bar 12 by the operation of the lifting mechanism according to the rotation operation of the adjustment dial 16. As shown in FIG. 6, an indicator needle 17 is provided on the left side surface of the support plate 11 so as to hang down, and a scale indicating the height is provided on the corresponding surface of the support base 10. The vertical position of the reference plate 20 can be determined from the scale value corresponding to the tip of the indicator needle 17 that moves up and down integrally with the support plate 11.

  An angle indicating plate 14 (angle indicator) is fixed so as to hang down at a predetermined position in the right rear direction on the back surface of the reference plate 20 (see particularly FIGS. 2 and 7). An angle scale is formed on the angle indicating plate 14. The scale of the angle indicating plate 14 indicated by the pointing line formed on the right side surface of the support plate 11 indicates the swinging angle of the reference plate 20 that swings around the axis Ls of the swinging support bar 12 supported by the bracket 13 so as to be swingable. It is shown as a value (see FIGS. 2 and 7).

  An arc-shaped elongated hole 14 a is formed in the angle indicating plate 14 so as to draw an arc around the axis Ls of the swing support bar 12 that is the swing center of the reference plate 20. A fixing screw 15 that is screwed into the right side surface of the support plate 11 through the arc-shaped elongated hole 14a of the angle indicating plate 14 is provided. The fixing screw 15 is formed with a flange 15a. When the fixing screw 15 is screwed into the support plate 11, the flange 15a presses the vicinity of the arc-shaped long hole 14a of the angle indicating plate 14 against the right side surface of the support plate 11, The tilted state of the angle support plate 14, that is, the tilted state of the reference plate 20 is maintained (tilt maintaining mechanism).

  The reference plate 20 is divided into an adjustment part 21 in the front part and a slide support part 22 in the rear part. The adjustment unit 21 has an arch-shaped outer shape corresponding to the upper dentition (see FIG. 3), and a placement surface 21a for placing the upper dentition model inside the arch-shaped contour line is as follows. As will be described later, it is formed as a spherical concave surface. The surface of the slide support portion 22 is formed in a flat shape, and a right slide plate 30a is provided on the right side portion and a left slide plate 30b is provided on the left side portion so as to be slidable in the front-rear direction (see FIG. 3). A right support block 32a is provided at the front outer corner of the right slide plate 30a, and a left support block 32b is provided at the front outer corner of the left slide plate 30b. Fixed to the right support block 32a is a right support bar 31a that extends laterally to the vicinity of the center of the reference plate 20 in the left-right direction (the direction that should be the left-right direction of the mounted maxillary dentition model), and the left support block 32b. In addition, the left support bar 31b extending in the lateral direction to the vicinity of the center in the left-right direction of the reference plate 20 is fixed.

  A long hole (right long hole) 34a extending in the front-rear direction is formed in the right slide plate 30a, and a long hole (left long hole) 34b extending in the front-rear direction is also formed in the left slide plate 30b. The right fixing screw 33a is screwed into the slide support portion 22 through the right long hole 34a of the right slide plate 30a, and the left fixing screw 33b is screwed into the slide support portion 22 through the left long hole 34b of the left slide plate 30a. It is. By loosening the right fixing screw 33a, the right slide plate 30a can slide in the front-rear direction, and by adjusting the position of the right slide plate 30a in the front-rear direction, the position of the right support bar 31a in the front-rear direction is adjusted. Can do. Then, by tightening the right fixing screw 33a, the right slide plate 30a is fixed, and the front-rear direction position of the right support bar 31a is fixed. Similarly, the left slide plate 30b can be slid in the front-rear direction by loosening the left fixing screw 33b, and the front-rear direction of the left support bar 31b can be adjusted by adjusting the position of the left slide plate 30b in the front-rear direction. The position can be adjusted. Then, by tightening the left fixing screw 33b, the left slide plate 30b is fixed, and the position of the left support bar 31b in the front-rear direction is fixed.

  In addition, the scale which represents a position along the right slide plate 30a is formed in the surface of the slide support part 22, and the position of the front-back direction of the right support bar 31a is shown by the scale value which the indication line provided in the right slide plate 30a points out. Judgment can be made. Similarly, a scale indicating the position along the left slide plate 30b is formed on the surface of the slide support portion 22, and the front / rear direction of the left support bar 31b is determined by the scale value indicated by the indicator line provided on the left slide plate 30b. Can be determined.

  A sleeve 24 formed with an internal thread is embedded in a predetermined position on the center line Lc (see FIG. 3) in the left-right direction of the adjustment portion 21 of the reference plate 20 so as to penetrate the reference plate 20 (adjustment portion 21). Yes. A support pin 23 having a male screw is screwed onto the sleeve 24. By rotating the support pin 23, the support pin 23 moves forward and backward in the sleeve 24 according to the rotation direction, and protrudes and retracts from the mounting surface 21a of the reference plate 20 (adjustment unit 21). And the protrusion amount from the mounting surface 21a of the reference | standard board 20 of the support pin 23 can be adjusted according to the rotation amount. As will be described later, the upper dentition model can be supported on the reference plate 20 by the support pin 23, the right support bar 31a, and the left support bar 31b, and the support pin 23, the right support bar 31a, and the left support bar 31b. Thus, an upper dentition model support mechanism for supporting the upper dentition model so as to be positioned above the reference plate 20 is configured. The position of the support pin 23 (sleeve 24) should be the position of the incisor papilla of the maxillary dentition model placed on the reference plate 20 (adjustment unit 21) (see IP point in FIG. 16 described later). It is decided to correspond to.

  Further, a median reference pin 25 is detachably provided at a predetermined position near the slide support portion 22 on the center line Lc of the adjustment portion 21 of the reference plate 20. The median reference pin 25 protrudes from the placement surface 21a of the adjustment unit 21, and the median reference plate 25a is fixed to the tip thereof.

By the way, as shown in FIG. 9A, the upper jaw MX and the lower jaw MN of a person (individual) are arranged along a certain curved surface C1 (for example, a Spee curve) from the anterior tooth portion to the molar tooth portion, Also in the left-right direction, teeth are arranged along a certain curved surface C2 (for example, Wilson curve) as shown in FIG. 9B. 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 anterior teeth and molars in the movement of the mandible MN. is there. Based on this premise, in order to adjust or enable diagnosis of the maxillary dentition model prosthesis and denture so that no harmful lateral pressure is applied to the anterior and molar parts during mandibular movement In this maxillary dentition model adjuster 100, the placement surface 12a of the adjustment portion 21 of the reference plate 20 is formed as a spherical concave surface as shown in FIG. Specifically, a predetermined radius SR (assumed size of the upper jaw) is centered on a point O set at a predetermined position above the center line Lc (see FIG. 3) in the left-right direction of the reference plate 20 (adjustment unit 21). The mounting surface 21a of the adjustment unit 21 is formed so as to be a spherical concave surface (for example, set to 124 mm, 100 mm, 80 mm, or the like depending on the thickness). The lowest point P _LW of the spherical concave surface is a predetermined distance backward from the position of the support pin 23 (for example, about 10 mm when the radius SR = 124 mm, about 8.5 mm when the radius SR = 100 mm, and radius SR = 80 mm). In this case, the shape of the mounting surface 21a (spherical concave surface) is determined so as to be a position of about 7 mm).

As described above, the swing support bar 12 serving as the swing center of the reference plate 20 is located at a position corresponding to the lowest point P _LW of the spherical concave surface (mounting surface 21a) as shown in FIG. Are provided so as to extend in the lateral direction of the reference plate 20 (the direction to be the left and right direction of the maxillary dentition model to be placed). Then, as shown in FIG. 10, the reference plate 20 can be in a state of being tilted by swinging like the reference plate 20 (+) around the axis Ls of the swing support bar 12. At this time, the maxillary dentition model adjuster 100 determines the inclination angle of the reference plate 20 based on the scale value of the angle indicator plate 14 indicated by the indicator line formed on the right side surface of the support plate 11 as shown in FIG. be able to. Then, by tightening the fixing screw 15, the angle indicating plate 14 is pressed against the support plate 11, and the reference plate 20 is maintained at the inclination angle specified by the angle indicating plate 14.

  By using the maxillary dentition model adjuster 100 and the articulator as described above, for example, the adjustment and diagnosis of the portion corresponding to the prosthesis or denture of the maxillary dentition model can be performed as follows.

First, X-ray standard photography (cephalo X-ray photography) of the head including the jaw part of an individual (dental patient) H is performed. Then, in the X-ray standard photographic image (cephalo X-ray photographic image) shown in FIG. 12, for example, obtained by this X-ray standard photographic image, Measures the angle α between the Frankfurt plane PL _FF , which is a plane formed by connecting edges, and is almost parallel to the ground surface when the individual H stands upright, and the occlusal plane PL _OCC between the upper and lower jaws of the individual H Is done.

For example, as shown in FIG. 13, the articulator 200 includes a support post 210, a lower bow 220 formed so as to be disposed at a right angle to the support post 210 at the lower end of the support post 210, and a shaft 211 at the upper end of the support post 210. And an upper bow 230 provided so as to be rotatable around the center. The upper arch 230 is provided with an upper fixing screw 232 for fixing a mount portion (not shown) for mounting the maxillary dentition model. An incisal pin 233 extending in the vertical direction is fixed to the distal end portion of the upper bow 230, and the distal end of the insisal pin 233 comes into contact with a receiving member 221 provided at the distal end of the lower bow 220. Further, for example, as shown in FIG. 14, the upper dentition model adjuster 100 can be mounted on the upper surface of the lower arch 220. The maxillary dentition model adjuster 100 is fixed to the lower arch 220 by a lower fixing screw 222. In the articulator 200, the upper arch 230 is adjusted to be parallel to the lower arch 220, and the upper arch 230 is regarded as the Frankfurt plane PL _FF of the individual H as shown by a broken line in FIG. .

Next, in the maxillary dentition model adjuster 100, the fixing screw 15 is loosened so that the inclination angle of the reference plate 20 (shown in the angle display plate 14) becomes the angle α measured as described above. The plate 20 is swung around the axis Ls of the swing support bar 12 (see FIG. 10). Then, by tightening the fixing screw 15, the reference plate 20 is maintained in an inclined state with the angle α (see FIG. 11). In this state, as shown in FIG. 15, the support pin 23 is protruded from the mounting surface 21a of the reference plate 20 (adjustment unit 21) by a predetermined amount to be placed on the incisor papilla of the upper dentition model 50 shown in FIG. to support the corresponding partial IP by the support pins 23, further portions HN the portion HN _R corresponding to the right Ha Muller notch of the upper jaw teeth model 50 corresponding to the left Ha Muller notch while being supported by the right supporting bars 31a The positions of the right slide plate 30a and the left slide plate 30b in the front-rear direction are adjusted so that _L is supported by the left support bar 31b. At this time, the maxillary dentition model 50, the right support bar 31a, and the left support bar 31b so that the center line Lm (see FIG. 16) in the left-right direction of the maxillary dentition model 50 matches the midline reference pin 25 and the midline reference plate 25a. And alignment.

In this way, the upper jaw teeth model 50, part IP that corresponds to the incisor papilla, both Ha Muller notches corresponding to _HN R, HN _L support pins 23 at right support bars 31a and left support bars 31b It will be in the state supported above the reference | standard board 20 (refer FIG. 15). In this state, the inclination of the maxillary dentition model 50 in the front-rear direction is the same as the inclination (angle α) of the reference plate 20.

16 includes a right middle incisor CI _R , a right incisor LI _R , a right canine C _R , a right first premolar PM _R1 , a right second premolar PM _R2 , and a right first Molar M _R1 , right second molar M _R2 , left middle incisor CI _L , left incisor LI _L , left canine C _L , left first premolar PM _L1 , left second premolar PM _L2 , left first All the tooth portions of the molar M _L1 and the left second molar M _L2 are arranged in an arch shape. However, the maxillary dentition model 50 corresponds to the upper jaw of the individual H (dental medical patient), and even if one or more teeth are missing, all the teeth are missing. It may be a thing. Even in this case, the incisor papilla IP is supported by the support pin 23, and both the Hammer notches HN _R and HN _L arranged on the straight line L _HN extending in the left-right direction of the maxillary dentition model 50 are the right support bar 31a, The maxillary dentition model 50 is set on the maxillary dentition model adjuster 100 so as to be supported by the left support bar 31b, and the inclination of the maxillary dentition model 50 in the front-rear direction is the same as the inclination (angle α) of the reference plate 20. become.

  Next, the maxillary dentition model adjuster 100 in which the maxillary dentition model 50 is set is fixed to the lower arch 220 of the articulator 200 by the lower fixing screw 222. Then, the adjustment dial 16 of the maxillary dentition model adjuster 100 is rotated to adjust the height of the reference plate 20, and the mount portion 231 (described later) for fixing the maxillary dentition model 50 by the upper fixing screw 232 of the upper arch 230. (See Fig. 17). In this state, the support pin 23 is removed from the sleeve 24 and the right fixing screw 33a and the left fixing screw 33b are loosened to slide the right slide plate 30a and the left slide plate 30b rearward. Thereby, the support by the support pin 23, the right support bar 31a, and the left support bar 31b of the maxillary dentition model 50 is released. As a result, the upper dentition model 50 and the reference plate 20 are inclined at the same inclination (measured angle α), the upper dentition model 50 is placed on the upper arch 230 of the articulator 200, and the reference plate 20 (upper dentition model adjustment). The device 100) is placed on the lower bow 220 of the articulator 200.

  Then, the adjustment dial 16 of the maxillary dentition model adjuster 100 is rotated to raise the reference plate 20, and the end surface of the dentition portion of the maxillary dentition model 50 is placed on the reference plate 20 (adjustment unit 21) as shown in FIG. 17. ) Is placed in contact with the mounting surface 21a. In the case of the maxillary dentition model 50 in which all the tooth portions are missing, a predetermined gap (a prosthesis, a denture, or the like is provided between the maxillary dentition model 50 and the placement surface 21a of the reference plate 20 (adjustment unit 21). The height of the reference plate 20 is adjusted so that a gap to be formed is formed.

  Thereafter, the dentition portion of the maxillary dentition model 50 installed on the upper arch 230 of the articulator 200 is adjusted with reference to the placement surface 21a which is a spherical concave surface of the reference plate 20 (adjustment unit 21). Specifically, the entire maxillary dentition model 50 installed on the upper arch 230 is aligned in the front-rear direction and the left-right direction, the height (length) and inclination of each tooth portion, and the upper dentition Various adjustments such as adjustment of the left and right balance as seen from the front are made. Furthermore, the dentition portion of the maxillary dentition model 50 can be diagnosed on the basis of the mounting surface 21a which is the spherical concave surface.

In the upper jaw teeth model regulator 100 as described above, the left-right direction of the upper jaw teeth model 50 in the reference plate 20 corresponding to the lowest point P _LW spherical concave surface and a mounting surface 21a of (adjusting portion 21) located Since the reference plate 20 can be swung around the axis Ls of the peristaltic support bar 12 extending in the direction to become, and the reference plate 20 is maintained in a tilted state by the peristaltic movement, Adjustment and diagnosis of the maxillary dentition model 50 can be performed with reference to the spherical concave surface of the reference plate 20 in a state tilted at a desired angle with respect to the upper arch 230.

In particular, since the reference plate 20 about the axis Ls of the pivotal support bar 12 at a position corresponding to the lowest point P _LW spherical concave surface and becomes the mounting surface 21a of the reference plate 20 is pivotal (see FIG. 10) The portion of the spherical concave surface in the front-rear direction across the lowest point P _LW can be tilted with a good balance.

Then, the angle α between the occlusal plane PL _OCC between the upper and lower jaws of the individual H and the Frankfurt plane PL _FF is measured from the X-ray standard photographic image (cephalo X-ray image) of the head including the chin of the individual H. The reference plate 20 of the maxillary dentition model 100 placed on the lower arch 220 of the articulator 200 is tilted so as to have the measured angle α, and the upper dentition model 50 with respect to the upper arch 230 of the articulator 200 is tilted. The maxillary dentition model 50 is placed on the upper arch 230 of the articulator 200 in a state where the inclination in the front-rear direction is the measured angle α, and in this state, the maxillary dentition model 50 is the spherical shape of the reference plate 20. Adjustment is made with reference to the concave surface (mounting surface 21a). Therefore, both the inclination of the reference plate 20 and the inclination of the maxillary dentition model 50 are adjusted to the angle α formed by the occlusal plane PL _OCC and the Frankfurt plane PL _FF between the upper jaw and the lower jaw of the individual H, The upper dentition model 50 can be adjusted with reference to the spherical concave surface of the reference plate 20. As a result, the relative positional relationship (angle α) of the upper jaw with respect to the bone (Frankfurt plane PL _FF ) of the individual H (human) in the articulator 200 is reproduced more faithfully, and the maxillary teeth suitable for each individual H Adjustment of the row model 50 can be easily performed.

Note that the angle α formed by the occlusal plane PL _OCC and the Frankfurt plane PL _FF of the individual H is not only measured from the X-ray standard image, but may be measured by other methods.

In the example of adjustment and diagnosis of the maxillary dentition model described above, the placement surface 21a of the reference plate 20 (adjustment unit 21) is formed in a spherical concave surface, and is located at a position corresponding to the lowest point P _LW of the spherical concave surface. The maxillary dentition model adjuster is used that is capable of maintaining the tilted state of the reference plate 20 by swinging around the axis Ls of the swing support bar 12 to be arranged. For example, it becomes a planar shape, and the reference plate can be freely swung around an axis extending in the left and right direction of the maxillary dentition model at a predetermined position of the reference plate, and the reference plate is inclined. A maxillary dentition model adjuster having a structure capable of maintaining the state can be used.

  The maxillary dentition model adjuster according to the present invention has an effect that adjustment and diagnosis of the maxillary dentition model suitable for each individual is possible, and the maxillary dentition adjustment method according to the present invention includes the maxillary dentition model adjustment method. The maxillary dentition model has the effect of easily adjusting the maxillary dentition model suitable for each individual using the dentition model adjuster, and is used for the construction, adjustment, diagnosis, etc. of the maxillary dentition model, respectively. This is useful as a method for adjusting the dentition model in making the adjuster and the maxillary dentition model.

DESCRIPTION OF SYMBOLS 10 Support stand 11 Support plate 12 Peristaltic support bar 13 Bracket 14 Angle indicator plate 14a Arc-shaped long hole 15 Fixing screw 15a Presser flange 16 Adjustment dial 17 Pointer needle 20 Reference plate 21 Adjustment part 21a Mounting surface 22 Slide support part 23 Support pin 24 Sleeve 25 Median reference pin 25a Median reference plate 30a Right slide plate 30b Left slide plate 31a Right support bar 31b Left support bar 32a Right support block 32b Left support block 33a Right fixing screw 33b Left fixing screw 34a Right long hole 34b Left long hole 50 Maxillary dentition model 100 Maxillary dentition model adjuster 200 Articulator 210 Strut 211 Axis 220 Lower arch 221 Receiving part 222 Lower fixing screw 230 Upper arch 231 Upper jaw mounting part 232 Upper fixing screw 233 Incisal pin

Claims (9)

A reference plate having a spherical concave surface on which the upper dentition model is placed;
A reference plate support mechanism that supports the reference plate slidably around an axis extending in a direction to be a left-right direction of the maxillary dentition model at a position corresponding to the lowest point of the spherical concave surface of the reference plate;
A maxillary dentition model adjuster having an inclination maintaining mechanism for maintaining the inclination state of the reference plate supported by the reference plate support mechanism in a state of being tilted by being pivoted about the axis.   The maxillary dentition model adjuster according to claim 1, further comprising an angle indicator that displays an inclination angle of the reference plate supported by the reference plate support mechanism.   2. An upper dentition model support mechanism that is integrated with the reference plate, supports the upper dentition model so as to be positioned above the reference plate, and is capable of releasing the support of the upper dentition model. 2. Maxillary dentition model adjuster described in 2. The maxillary dentition model support mechanism includes a support pin that supports a position corresponding to the incisor papilla of the maxillary dentition model,
The maxillary dentition model adjuster having a support bar for supporting a position corresponding to the left and right Hammer's notches of the maxillary dentition model. An angle measuring step for measuring an angle formed by the occlusal plane between the upper jaw and the lower jaw of the individual and the Frankfurt plane;
A reference plate having a surface on which the maxillary dentition model is placed, and the reference plate can be freely oscillated around an axis extending in a direction to be the left and right direction of the maxillary dentition model at a predetermined position of the reference plate. A maxillary dentition model having a reference plate support mechanism for supporting, and an inclination maintaining mechanism for maintaining the inclination state of the reference plate supported by the reference plate support mechanism while being tilted by being pivoted about the axis. Using the adjuster, the reference plate is centered on the axis so that the inclination angle of the reference plate in the maxillary dentition model adjuster installed on the lower arch of the articulator becomes the measured angle. A reference plate tilt setting step for maintaining the tilted and tilted state,
A maxillary dentition model installation step of installing the maxillary dentition model on the upper arch of the articulator in a state where the inclination of the maxillary dentition model with respect to the upper arch of the articulator is the measured angle. When,
An upper jaw dentition model adjustment method comprising: an adjustment step of adjusting a dentition of the upper dentition model installed on the upper arch of the articulator with reference to the surface of the reference plate. The upper teeth further comprising an upper dentition model support mechanism that is integrated with the reference plate, supports the upper dentition model so as to be positioned above the reference plate, and is capable of releasing the support of the upper dentition model. Using the row model adjuster,
With the upper dentition model supporting mechanism supporting the upper dentition model, the reference plate is swung around the axis so that the inclination angle of the reference plate becomes the measured angle. In this state, the upper dentition model is placed on the upper arch of the articulator, and the support of the upper dentition model of the upper dentition model support mechanism is released, The maxillary dentition model adjustment method according to claim 5, wherein the reference plate inclination setting step and the maxillary dentition model setting step are performed. An angle measuring step for measuring an angle formed by the occlusal plane between the upper jaw and the lower jaw of the individual and the Frankfurt plane;
The maxillary dentition model adjuster according to any one of claims 1 to 4, wherein the reference plate is installed on a lower arch of an articulator so that an angle of inclination of the reference plate is the measured angle. A reference plate inclination setting step for maintaining the reference plate in a tilted state by sliding the reference plate;
A maxillary dentition model installation step of installing the maxillary dentition model on the upper arch of the articulator in a state where the inclination of the maxillary dentition model with respect to the upper arch of the articulator is the measured angle. When,
An upper jaw dentition model adjustment method comprising: an adjustment step of adjusting a dentition of the upper dentition model installed on the upper arch of the articulator with reference to a spherical concave surface of the reference plate. Using the maxillary dentition model adjuster according to claim 3 or 4,
With the upper dentition model supporting mechanism supporting the upper dentition model, the reference plate is swung around the axis so that the inclination angle of the reference plate becomes the measured angle. In this state, the upper dentition model is placed on the upper arch of the articulator, and the support of the upper dentition model of the upper dentition model support mechanism is released, The maxillary dentition model adjustment method according to claim 7, wherein the reference plate inclination setting step and the maxillary dentition model setting step are performed.   The maxillary dentition model adjusting method according to any one of claims 5 to 8, wherein the angle measuring step measures an angle formed by the occlusal plane and the Frankfurt plane from an X-ray standard photographic image of an individual's head.

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