JP2012217529A - Dentition model adjuster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dentition model adjuster for easily arraying the appropriate dental bite of prosthetic appliances and artificial dentures corresponding to, especially, posterior teeth in the dentition model of an upper jaw or a lower jaw.SOLUTION: An upper jaw dentition model adjuster 10 to be used when adjusting the respective posterior teeth of an upper jaw dentition model 50 includes: an edge part 11 along the dentition of the upper jaw dentition model 50; a first reference surface 13a (14a) formed in the edge part 11 thereby to restrict by predetermined inclination, the inner surface of a tongue side cusp of each posterior tooth on the right or left side of the upper jaw dentition model 50; and a second reference surface 14a (13a) formed in the edge part thereby to restrict by predetermined inclination, the inner surface of a tongue side cusp of each posterior tooth on the other side of the upper jaw dentition model.

Description

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

  A dental prosthesis and a denture are constructed and adjusted in the maxillary dentition model 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 this patent application has already proposed a maxillary dentition model adjuster (see Patent Document 1). This maxillary dentition 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 a certain curved surface (eg, Spee fold or Wilson fold) as well as the human dentition. Since the construction and diagnosis of objects and dentures can be performed with reference to the spherical concave surface, the maxillary dentition model prosthesis or A part corresponding to the denture can be easily constructed, and proper judgment and the like can be easily performed.

Japanese Patent No. 4468247

  By the way, as described above, the conventional maxillary dentition model adjuster provided with the reference plate in which the surface on which the maxillary dentition model is placed is a spherical concave surface, the ideal dentition of a person in the maxillary dentition model is It assists in arranging dentures and the like to be reproduced. However, even if the dentures and the like are ideally arranged, it cannot be assured that each denture or the like properly meshes with the corresponding denture on the lower jaw. For this reason, adjustment work for making the bite appropriate has to rely on the experience of technicians and dentists.

  The present invention has been made in view of such circumstances, and can easily arrange a prosthesis or a denture corresponding to a molar in an upper and lower dentition model so as to be properly bitten. A dentition model adjuster is provided.

  The maxillary dentition model adjuster according to the present invention is an maxillary dentition model adjuster used when adjusting each molar portion of the maxillary dentition model, and an edge portion along the dentition of the maxillary dentition model, A first reference surface that is formed on the edge and restricts the inner surface of the lingual cusp of each molar portion on either side of the maxillary dentition model with a predetermined inclination, and is formed on the edge, It has a configuration having a second reference surface that regulates the inner surface of the lingual cusp of each molar portion on the other side of the upper jaw model with a predetermined inclination.

  With such a configuration, with the dentition of the maxillary dentition model set along the edge of the maxillary dentition model adjuster, the inner surface of the lingual cusp of each molar portion on the one of the left and right sides is the first. Adjust the inclination of the lingual cusp inner surface of each molar part so that it properly contacts the reference surface, and make sure that the inner surface of the lingual cusp of each other molar part properly contacts the second reference surface. By adjusting the inclination of the lingual cusp inner surface of each molar part, the inclination of the inner surface of the lingual cusp of each left and right molar part in the maxillary dentition model is adjusted to be regulated by the first reference surface and the second reference surface Will come to be.

  In the masticatory movement, the lower jaw moves and grinds the food such that the inner surface of the buccal cusp in each lower molar is pressed against the inner surface of the lingual cusp in the corresponding molar of the upper jaw. Assuming occlusion of each molar of the lower jaw and the corresponding molar of the upper jaw in such a masticatory movement, by appropriately setting the first reference plane and the second reference plane in the maxillary dentition model adjuster, The inclination of the inner surface of the lingual cusp of each molar portion in the maxillary dentition model in contact with the inner surface of the buccal cusp of each molar tooth and receiving pressure during mastication can be made appropriate.

  In the maxillary dentition model adjuster according to the present invention, the first reference surface and the second reference surface are formed so as to be in contact with the same circle in a cross section passing through the corresponding left and right molar portions vertically. can do.

  With such a configuration, it is possible to adjust the inclination such that the inner surface of the lingual cusp of each left and right molar portion is in contact with the same circle in a cross section passing through each corresponding right and left molar portion vertically.

  In the maxillary dentition model adjuster according to the present invention, each of the first reference surface and the second reference surface imitates the inner surface of the buccal cusp of the corresponding molar tooth of the lower jaw that meshes with the upper molar tooth. It can be configured.

  With such a configuration, the left and right molar portions correspond to the lower jaw by adjusting the lingual cusp inner surfaces of the left and right molar portions in the maxillary dentition model so as to properly contact the first reference surface and the second reference surface. It can be adjusted to contact the inner surface of the buccal cusp of the molar part.

  In the mandibular dentition model adjuster according to the present invention, a mandibular dentition model adjuster used when adjusting each molar portion of the mandibular dentition model, an edge along the dentition of the mandibular dentition model, and A first reference surface that is formed on the edge and restricts the inner surface of the buccal cusp of each molar portion on either the left or right side of the lower jaw dentition model with a predetermined inclination; and the lower jaw It has a configuration having a second reference surface that regulates the cheek-side inner surface of each molar tooth portion on the other side of the dentition model with a predetermined inclination.

  With such a configuration, in the state where the dentition of the lower dentition model is set along the edge of the lower dentition model adjuster, the buccal cusp inner surface of each molar part on the one of the left and right sides is the first. The inclination of the buccal cusp inner surface of each molar part is adjusted so as to properly contact the reference surface, and the inner surface of the buccal cusp of each other molar part is appropriately in contact with the second reference surface. By adjusting the inclination of the buccal cusp inner surface of each molar part, the inclination of the inner surface of the buccal cusp of each left and right molar part of the lower dentition model is adjusted to be regulated by the first reference plane and the second reference plane Will come to be.

  Assuming the occlusion of each molar of the lower jaw and the corresponding molar of the upper jaw in the masticatory movement by the movement of the lower jaw as described above, appropriately set the first reference plane and the second reference plane in the lower jaw dentition model adjuster By doing so, the inclination of the inner surface of the buccal cusp of each molar part in the lower dentition model to be pressed against the inner surface of the lingual cusp of the upper molar at the time of mastication can be made appropriate.

  In the mandibular dentition model adjuster according to the present invention, the first reference surface and the second reference surface are formed so as to be in contact with the same circle in a cross section passing through the corresponding left and right molar portions vertically. can do.

  With such a configuration, it is possible to adjust the inclination so that the buccal cusp inner surface of each of the left and right molar portions is in contact with the same circle in a cross section passing through the corresponding left and right molar portions vertically.

  Further, in the mandibular dentition model adjuster according to the present invention, each of the first reference surface and the second reference surface imitates the inner surface of the lingual cusp of the corresponding molar of the upper jaw that meshes with the molar of the lower jaw. It can be configured.

  With such a configuration, the left and right molar portions correspond to the upper jaw by adjusting the buccal cusp inner surfaces of the left and right molar portions in the lower jaw dentition model so as to properly contact the first reference surface and the second reference surface. It can be adjusted to contact the inner surface of the lingual cusp of the molar part.

  According to the maxillary dentition model adjuster according to the present invention, the inner surface of the lingual cusp of the left and right molar portions in the maxillary dentition model is adjusted to an inclination regulated by the first reference surface and the second reference surface. Therefore, by appropriately setting the first reference surface and the second reference surface, it is possible to properly occlude the prosthesis and the denture corresponding to the molar in the maxillary dentition model with the corresponding molar on the lower jaw side. It can be easily arranged so that

  Further, according to the mandibular dentition model adjuster according to the present invention, the inner surface of the buccal cusp of the left and right molar portions of the mandibular dentition model is adjusted to an inclination regulated by the first reference surface and the second reference surface. Therefore, by appropriately setting the first reference surface and the second reference surface, the prosthesis and the denture corresponding to the molar tooth in the lower dentition model can be appropriately applied to the corresponding molar tooth on the upper jaw side. Arrangement so as to be occluded can be easily performed.

It is a perspective view which shows the state (the 1) with which the maxillary dentition model regulator which concerns on embodiment of this invention was mounted | worn with the articulator. It is a perspective view which shows the state (the 2) with which the maxillary dentition model regulator which concerns on embodiment of this invention was mounted | worn with the articulator. It is a top view which shows an example of a maxillary dentition model. It is sectional drawing which shows the state by which the right side 2nd molar part of a maxillary dentition model is adjusted with the maxillary dentition model adjuster. It is a figure for demonstrating the 1st reference surface and 2nd reference surface in a maxillary dentition model adjuster. It is a figure which shows the state of occlusion of a person's upper molar and lower molar. It is a perspective view which shows the state (the 1) with which the mandibular dentition model regulator which concerns on embodiment of this invention was mounted | worn with the articulator. It is a perspective view which shows the state (the 2) with which the mandibular dentition model regulator which concerns on embodiment of this invention was mounted | worn with the articulator. It is a figure which shows an example of a lower jaw dentition model. It is sectional drawing which shows the state by which the right side 2nd molar part of a lower jaw dentition model is adjusted with the lower dentition model adjuster. It is a figure for demonstrating the 1st reference surface and 2nd reference surface in a lower jaw dentition model adjuster.

  The maxillary dentition model adjuster according to an embodiment of the present invention is used by being mounted on an articulator as shown in FIGS. 1 and 2.

  1 and 2, the articulator 100 includes a substantially T-shaped lower bow 120 formed integrally with the lower ends of the columns 110a and 110b, and an upper end of the columns 110a and 110b and a shaft 111 around the shaft 111. A substantially T-shaped upper bow 130 supported so as to be movable is opposed to the upper bow 130. An incisal pin 133 extending in the vertical direction is attached to the distal end portion of the upper bow 130, and the distal end of the insisal pin 133 is in contact with a receiving portion 121 provided at the distal end portion of the lower bow 120. The angle of the upper arch 130 with respect to the lower arch 120 can be adjusted by adjusting the fixed position of the insisal pin 133 to the upper arch 130. A mount 55 fixed to the upper dentition model 50 to be adjusted is detachably fixed to the inner surface of the upper arch 130 by a fixing screw 132. The mount 15 fixed to the maxillary dentition model adjuster 10 is detachably fixed to the inner surface of the lower arch 120 by a fixing screw 122.

In the maxillary dentition model 50, for example, as shown in FIG. 3, the teeth are arranged in an arch shape. In particular, on the right side of the midline Lc, the first premolar part PM _R1 , the second premolar part PM _R2 , the first molar part M _R1, and the second molar part M _R2 are spread from the front tooth side toward the back. The first premolar part PM _L1 , the second premolar part PM _L2 , the first premolar part M _L1, and the second premolar part M _L2 are arranged on the left side of the midline Lc from the anterior tooth side in the same manner as the right side. It is arranged to spread toward. These right molar portions PM _R1 , PM _R2 , M _R1 , M _R2 and left molar portions PM _L1 , PM _L2 , M _L1 , M _L2 are objects of specific adjustment by the maxillary dentition model adjuster 10. is there.

The arched arrangement of the teeth in the maxillary dentition model 50 has already been adjusted by the occlusal adjustment curved plate proposed by the inventor in Japanese Patent No. 4468247. Thereby, a straight line L1 connecting the right first premolar part PM _R1 and the left second molar part M _L2 , and a straight line _L2 connecting the left first premolar part PM _L1 and the right second molar part M _R2 Intersect on the midline Lc. The intersection P is a point corresponding to the “occlusion origin” proposed by the present inventor as a point that can be regarded as a reasonable reference point for jaw movement (see Japanese Patent No. 4468247).

The maxillary dentition model adjuster 10 fixed to the lower arch 120 of the articulator 100 via the mount 15 is formed of a material such as metal or resin, and the upper surface 12 is directed inward from the edge 11. It has a concave shape that becomes lower. The edge part 11 is formed in the shape curved in the arch shape so that the arch-like dentition (refer FIG. 3) in the maxillary dentition model 50 may be followed. And the right molar adjustment part 13 corresponding to each right molar part PM _R1 , PM _R2 , M _R1 , M _R2 is formed in a predetermined inner part of the edge 11, and each left molar part PM _L1 , PM _L2. , M _L1 , M _L2 corresponding to the left molar adjustment portion 14 is formed.

The right molar adjustment part 13 is applied to the inner surface of the lingual cusp (functional cusp) of each right molar part PM _R1 , PM _R2 , M _R1, and M _R2 of the maxillary dentition model 50 and A first reference surface 13a that restricts the inner surface with a predetermined inclination is formed. For example, in the portion corresponding to the second molar portion M _R2 (UJ: means the upper jaw side; used to distinguish from the lower jaw side) of the right molar adjustment portion 13, as shown in FIG. The first reference surface 13a is the buccal cusp FC1 of the mandibular second molar M _R2 (LJ: means the mandibular side, which will be used to distinguish it from the maxillary side hereinafter) biting the maxillary second molar. LJ) has the same inclination as the plane PL _R corresponding to the inner surface of the functional cusp. Accordingly, in the portion corresponding to the second molar portion M _R2 (UJ) of the right molar adjustment portion 13, the first reference surface 13a is the inner surface of the lingual cusp FC2 (UJ) of the second molar portion M _R2 (UJ). The inner surface of the lingual cusp FC2 (UJ) is restricted to the inclination of the inner surface of the buccal cusp FC1 (LJ) of the corresponding second molar M _R2 of the lower jaw. Similarly, for the portions corresponding to the other molar portions M _R1 , PM _R2 , and PM _R1 of the right molar adjustment portion 13, the first reference surface 13 a extends the inner surface of the lingual cusp of the molar portion of the corresponding molar tooth of the lower jaw. Regulate the inclination of the inner surface of the buccal cusp.

Similarly to the right molar adjustment unit 13, the left molar adjustment unit 14 is applied to the lingual cusps of the left molar parts PM _L1 , PM _L2 , M _L1 , and M _L2 of the maxillary dentition model 50. tilt an inner surface of the lingual cusp of a predetermined, specifically, is the second reference surface 14a for regulating the same inclination as the plane PL _L corresponding to the inner surface of the corresponding molars buccal cusp of the lower jaw formation. The first reference surface 13a of the right molar adjustment part 13 and the second reference surface 14a of the left molar adjustment part 14 are formed so as to be in contact with the same circle in a cross section passing vertically through the corresponding left and right molar parts. Yes. For example, as shown in FIG. 5, in a cross section passing through the left and right second molar portions M _R2 (UJ) and M _L2 (UJ) vertically, the first reference plane 13a (plane PL _R ) and the second reference plane 14a (plane PL _L ) is formed so as to be in contact with the same circle C1 centered on a line extending vertically from the left and right centers (corresponding to the median line Lc in the maxillary dentition model 50). Then, the closer to the front molar portion, that is, the closer to the first premolar portion PM _R1 , PM _L1 , the first reference surface 13a (plane PL _R ) and the second reference surface 14a ( The circle in contact with the plane PL _L ) becomes smaller.

  The inclinations (see FIG. 4) of the first reference surface 13a and the second reference surface 14a described above in the right molar adjustment unit 13 and the left molar adjustment unit 14, and the relationship between the first reference surface 13a and the second reference surface 14a (see FIG. 5) is based on the following consideration by the inventor of the present application.

As shown in FIG. 6, based on the idea that human maxillary dentition should be arranged along a certain curved surface (spherical surface) Co, the arch shape of the teeth in the maxillary dentition model 50 is shown. The arrangement (see FIG. 3) was adjusted by the occlusal adjustment curved plate proposed in Japanese Patent No. 4468247. Further, in the chewing movement, the lower jaw moves and the inner surface of the buccal cusp of each lower molar is pressed against the inner surface of the lingual cusp of the corresponding molar of the upper jaw to grind food. By assuming the occlusion of the lower molars and the corresponding molars of the upper jaw in such a masticatory movement, the first reference surface 13a should regulate the inclination of the lingual cusp inner surface of each molar of the upper dentition model 50. the inclination of the second reference surface 14a is set buccal cusp inner surface PL _R in molars of the lower jaw, the inclination of the PL _L (see FIG. 4).

Further, as shown in FIG. 6, in the model in which the teeth of the upper jaw are arranged on the spherical surface Co (the inner surface of the occlusal adjustment curved plate proposed in Japanese Patent No. 4468247), the corresponding molar teeth of the upper and lower jaws on the left and right In the cross-section passing through the corresponding molar teeth of the maxillary dentition model 50 in the vertical direction in consideration of the fact that the occlusion is performed on the plane (true occlusal plane) that is symmetrically in contact with the same circle C1 as described above, The first reference surface 13a (plane PL _R ) and the second reference surface 14a (plane PL _L ) are in contact with the same circle C1 having a center on a line extending vertically from the left and right centers.

  Each molar tooth of the maxillary dentition model 50 can be adjusted as follows using the above-described maxillary dentition model adjuster 10.

With the dentition of the maxillary dentition model 50 attached to the upper arch 130 of the articulator 100 set along the edge 11 of the maxillary dentition model adjuster 10 attached to the lower arch 120, each right side The first reference surface 13a is applied to the inner surface of the lingual cusp FC2 (UJ) of the molar portions M _R2 , M _R1 , PM _R2 , and PM _R1 , and the inner surface of the lingual cusp FC2 (UJ) is properly aligned with the first reference surface 13a. The inclination of the inner surface of the lingual cusp FC2 (UJ) of each molar portion M _R2 , M _R1 , PM _R2 , PM _R1 is adjusted so as to come into contact (see FIG. 4). The adjustment of the inclination of the lingual cusp FC2 (UJ) can be performed, for example, by adjusting the inclination of the molar portion itself or by shaving the inner surface of the lingual cusp FC2 (UJ). Similarly, for the right molar portions M _L2 , M _L1 , PM _L2 , and PM _L1 , the second reference surface 14a of the left molar adjustment portion 14 is applied to the inner surface of the lingual cusp FC2 (UJ), and the lingual side thereof. The inclination of the inner surface of the lingual cusp FC2 (UJ) of each molar portion M _R2 , M _R1 , PM _R2 , PM _R1 is adjusted so that the inner surface of the cusp FC2 (UJ) properly contacts the second reference surface 14a.

  As a result, the inner surfaces of the lingual cusps of the left and right molar portions in the maxillary dentition model 50 are adjusted to an inclination regulated by the first reference surface 13a and the second reference surface 14a. The inclination of the first reference surface 13a and the second reference surface 14a is set to the inclination of the inner surface of the buccal cusp of each lower molar (see PLR and PLL in FIGS. 4 and 5). The left and right molar portions in the maxillary dentition model 50 in which the inclination of the inner surface of the lingual cusp is adjusted by the first reference surface 13a and the second reference surface 14a are the inner surfaces of the buccal cusps of the molars whose lower lingual cusps are lower jaws. So that the pressure during mastication can be properly received upon contact with the. Therefore, it is possible to easily arrange the prosthesis and the denture corresponding to the molar tooth in the upper dentition model 50 so as to be appropriately bitten with the corresponding molar tooth on the lower jaw side.

  Next, a mandibular dentition model adjuster used when adjusting each molar part of the mandibular dentition model will be described. A mandibular dentition model adjuster according to an embodiment of the present invention includes an articulator 100 as shown in FIGS. 7 and 8 in the same manner as the above-described maxillary dentition model adjuster 10 (see FIGS. 1 and 2). Used by attaching to. Specifically, the mount 65 fixed to the lower dentition model 60 to be adjusted on the inner surface of the lower arch 120 is detachably fixed by the fixing screw 132, and the lower dentition model adjustment is performed on the inner surface of the upper arch 130. The mount portion 25 fixed to the container 20 is detachably fixed by a fixing screw 122.

In the lower dentition model 60, as in the upper dentition model 50 (see FIG. 3), for example, as shown in FIG. 9, the teeth are arranged in an arch shape. The first premolar part PM _R1 , the second premolar part PM _R2 , the first premolar part M _R1, and the second premolar part M _R2 spread from the anterior tooth side toward the back, particularly on the right side of the midline Lc. are arranged to, in the left side of the midline Lc, first premolar portion PM _L1, second premolar unit PM _L2, anterior side similarly to the first molar portion M _L1 and the second molar portion M _L2 is right It is arranged to spread from the back to the back. The arched dentition in the lower dentition model 60 is adjusted to correspond to the dentition of the upper dentition model 50 (see FIG. 3). Thereby, even in the lower jaw teeth model 60, like the upper jaw teeth model 50, the straight line L1 connecting the right and first premolars portion PM _R1 and the left second molar portion M _L2, left first premolar portion A straight line L2 connecting PM _L1 and the right second molar portion M _R2 intersects on the median line Lc (intersection P).

The mandibular dentition model adjuster 20 fixed to the upper arch 130 of the articulator 100 via the mount 25 is formed of a material such as metal or resin, and the upper surface 22 is directed inward from the edge 21. It has a concave shape that becomes lower. The edge portion 21 is formed in a shape that is curved in an arch shape so as to follow the arch-like dentition (see FIG. 9) in the lower jaw dentition model 60. And, on the outside a predetermined portion of the rim 21, are right molar adjuster 23 corresponding to the respective right molars _{PM R1, PM R2, M R1} , M R2 are formed, each of the left posterior portion PM _L1, PM _L2 , M _L1 , M _L2 corresponding to the left molar adjustment part 24 is formed.

The right molar adjustment portion 23 is applied to the inner surface of the buccal cusp of each right molar portion PM _R1 , PM _R2 , M _R1, and M _R2 of the lower dentition model 60 and the inner surface of the buccal cusp is predetermined. A first reference surface 23a that is restricted by inclination is formed. For example, in the portion corresponding to the second molar portion M _R2 (LJ) of the right molar adjustment portion 23, as shown in FIG. 10, the first reference surface 23 a formed on the outer portion of the edge portion 21 is the lower jaw portion. The inclination is the same as the plane PL _R corresponding to the inner surface of the lingual cusp of the second molar M _R2 (UJ) on the maxillary side that bites the second molar. Accordingly, in the portion corresponding to the second molar portion M _R2 (LJ) of the right molar adjustment portion 23, the first reference surface 23a is the inner surface of the buccal cusp FC1 (LJ) of the second molar portion M _R2 (LJ). The inner surface of the buccal cusp FC1 (LJ) is restricted to the inclination of the inner surface of the lingual cusp of the corresponding second molar M _R2 of the upper jaw. Similarly, for the portions corresponding to the other molar portions M _R1 , PM _R2 , and PM _R1 of the right molar adjustment portion 23, the first reference surface 23a is similarly applied to the inner surface of the buccal side cusp of the molar portion. The inner surface of the side cusp is restricted to the inclination of the inner surface of the lingual cusp of the corresponding molar in the maxilla.

Also, the left posterior adjustment unit 24, similarly to the right posterior adjustment section 23, is Ategawa the buccal cusp of the posterior portion of the left _{PM L1, PM L2, M L1} , M L2 in the lower jaw teeth model 60 tilt an inner surface of the buccal cusp of a predetermined, specifically, the second reference surface 24a for regulating the same inclination as the plane PL _L corresponding to the inner surface of the corresponding molar lingual cusp of the upper jaw are formed. The first reference surface 23a of the right molar adjustment part 23 and the second reference surface 24a of the left molar adjustment part 24 are formed so as to be in contact with the same circle in a cross section passing through the corresponding left and right molar parts vertically. Yes. For example, as shown in FIG. 11, in a cross section passing through the left and right second molar portions M _R2 (LJ) and M _L2 (LJ) vertically, the first reference plane 23a (plane PL _R ) and the second reference plane 24a (plane PL _L ) is formed so as to be in contact with the same circle C1 centered on a line extending vertically from the left and right centers (corresponding to the median line Lc in the maxillary dentition model 50). Then, the closer to the front molar portion, that is, the closer to the first premolar portion PM _R1 , PM _L1 , the first reference surface 23 a (plane PL _R ) and the second reference surface 24 a ( The circle in contact with the plane PL _L ) becomes smaller.

  The inclinations (see FIG. 10) of the first reference surface 23a and the second reference surface 24a described above in the right molar adjustment unit 23 and the left molar adjustment unit 24, and the relationship between the first reference surface 23a and the second reference surface 24a (see FIG. 11) is determined so that the lower dentition model 60 can be properly occluded with the upper dentition model 50 adjusted by the upper dentition model adjuster 10 determined based on the above-mentioned consideration of the present inventor. Is.

  Using the above-described mandibular dentition model adjuster 20, each molar tooth of the mandibular dentition model 60 can be adjusted as follows.

With the dentition of the lower dentition model 60 attached to the lower arch 120 of the articulator 100 set along the edge 21 of the lower dentition model adjuster 20 attached to the upper arch 130, each right side The first reference surface 23a of the right molar adjustment portion 23 is applied to the inner surface of the buccal cusp FC1 (LJ) of the molar portions M _R2 , M _R1 , PM _R2 , and PM _R1 , and the inner surface of the buccal cusp FC1 (LJ) is the first. The inclination of the inner surface of the buccal cusp FC1 (LJ) of each molar portion M _R2 , M _R1 , PM _R2 , PM _R1 is adjusted so as to properly contact the reference surface 23a (see FIG. 10). The adjustment of the inclination of the buccal cusp FC1 (LJ) can be performed, for example, by adjusting the inclination of the molar portion itself or by shaving the inner surface of the buccal cusp FC1 (LJ). Similarly, for the right molar portions M _L2 , M _L1 , PM _L2 , and PM _L1 , the second reference surface 24a of the left molar adjustment portion 24 is applied to the inner surface of the buccal cusp FC1 (LJ), and the buccal side thereof. The inclination of the inner surface of the buccal cusp FC1 (LJ) of each molar portion M _R2 , M _R1 , PM _R2 , PM _R1 is adjusted so that the inner surface of the cusp FC1 (LJ) properly contacts the second reference surface 24a.

As a result, the inner surfaces of the buccal cusps of the left and right molar portions in the lower dentition model 50 are adjusted to an inclination regulated by the first reference surface 23a and the second reference surface 24a. The inclination of the first reference surface 23a and the second reference surface 24a is, the inclination of the inner surfaces of the molars lingual cusp of the upper jaw (FIG. 10, PL _R in FIG. 11, PL _L reference) which are set to, The left and right molar portions in the lower dentition model 60 whose inclination of the inner surface of the buccal cusp is adjusted by the first reference surface 23a and the second reference surface 24a are the lingual cusps of the molars whose upper buccal cusp is the upper jaw. It can adjust so that it may contact with the inner surface of this and can receive the pressure at the time of chewing appropriately. Accordingly, it is possible to easily arrange the prosthesis and the denture corresponding to the molar tooth in the lower dentition model 60 so as to be appropriately bitten with the corresponding molar tooth on the upper jaw side.

  The maxillary dentition model adjuster and the mandibular dentition model adjuster according to the present invention make it easy to arrange prosthetics and dentures corresponding to molars in the maxillary and mandibular dentition models so as to provide proper occlusion. It is useful as a dentition model adjuster used together with an articulator when producing a prosthesis or a denture for the upper and lower jaws of a dental care patient.

10 Maxillary dentition model adjuster 11 Edge 12 Upper surface 13 Right molar adjustment part 13a First reference surface 14 Left molar adjustment part 14a Second reference surface 20 Mandibular dentition model adjuster 21 Edge 22 Upper surface 23 Right molar adjustment part 23a 1st reference plane 24 Left molar adjustment part 24a 2nd reference plane 100 Articulator

Claims (6)

A maxillary dentition model adjuster used when adjusting each molar part of the maxillary dentition model,
The edge along the dentition of the maxillary dentition model,
A first reference surface that is formed on the edge and regulates the inner surface of the lingual cusp of each molar portion on either side of the maxillary dentition model with a predetermined inclination;
A maxillary dentition model adjuster having a second reference surface that is formed at the edge and regulates the inner surface of the lingual cusp of each molar portion on the other side of the maxillary model with a predetermined inclination.   2. The maxillary dentition model adjuster according to claim 1, wherein the first reference surface and the second reference surface are formed so as to be in contact with the same circle in a cross section perpendicularly passing through corresponding left and right molar portions.   The maxillary dentition model adjuster according to claim 1 or 2, wherein each of the first reference surface and the second reference surface imitates an inner surface of a buccal cusp of a corresponding molar tooth of a lower jaw that meshes with an upper molar tooth. A mandibular dentition model adjuster used when adjusting each molar part of the mandibular dentition model,
An edge along the dentition of the lower dentition model,
A first reference surface that is formed on the edge and restricts the inner surface of the buccal cusp of each molar portion on either side of the lower jaw dentition model with a predetermined inclination;
A mandibular dentition model adjuster having a second reference surface that is formed at the edge and regulates the buccal inner surface of each molar portion on the other side of the mandibular dentition model with a predetermined inclination.   5. The lower dentition model adjuster according to claim 4, wherein the first reference surface and the second reference surface are formed so as to be in contact with the same circle in a cross section perpendicularly passing through corresponding left and right molar portions.   6. The mandibular dentition model adjuster according to claim 4 or 5, wherein each of the first reference surface and the second reference surface imitates an inner surface of a lingual cusp of a corresponding molar tooth of an upper jaw that meshes with a lower molar tooth.

Images