JP3223141U - Ruler for confirmation of artificial molar arrangement - Google Patents

Abstract

[PROBLEMS] To determine whether or not an anteroposterior adjustment curve of an artificial molar arranged in an occlusal ridge matches a predetermined anteroposterior adjustment curve in the production of a wax denture, Providing a ruler for confirming the arrangement of artificial molars that can be identified and the degree of correction. The upper side of the horizontally long plate-like body is a ruler portion for maxillary method for confirming the longitudinal adjustment curve of the maxillary artificial molars arranged by the maxillary method, and the lower side is arranged by the mandibular method. A ruler part 4 for the lower jaw method for confirming the anteroposterior adjustment curve of the mandibular artificial molar, and the ruler part for the upper jaw method has a first contact with the buccal cusp of the maxillary artificial premolar of the first straight ruler part 3a. Maxillary artificial molars bent in a U-shape and opened upward at a predetermined obtuse angle formed by the second abutment surface 5b formed between the contact surface 5a and the buccal cusp of the maxillary artificial molar tooth of the second straight ruler portion 3b The lower jaw ruler has a contact surface with the buccal cusp of a lower jaw artificial molar that is convex downward and curved with a predetermined radius. [Selection] Figure 1

Description

  The present invention relates to a ruler for confirming an artificial molar arrangement used in the production of a complete denture (hereinafter, unless otherwise specified, “denture” means a complete denture). More specifically, the present invention relates to the arrangement of the first premolar to the second premolar arranged adjacent to the occlusal ridge (also referred to as a wax ridge) of a wax denture, adjacent to the natural teeth in order. It is easy to check whether the downward convex anteroposterior adjustment curve as a series of buccal cusp tips of 4 artificial molars matches the specified anteroposterior adjustment curve. If not, correct the arrangement. It is possible to easily identify the required artificial molars and the extent of their correction, etc., and correct the predetermined molar adjustment by correcting the arrangement of the artificial molars based on that and confirming the appropriateness of the longitudinal adjustment curve after the correction. The present invention relates to a ruler for confirming an artificial molar arrangement that is useful for obtaining a curvature.

In the process of making a denture, an artificial anterior teeth (maxillary right central incisor, lateral incisor, canine, maxillary left central incisor, to the occlusal ridge of the maxillary occlusal floor attached to the maxillary working model using an articulator A total of 6 side incisors and canines are arranged, and artificial anterior teeth (middle incisors for right mandible, side incisors, canine teeth, left mandibular incisors) to the occlusal ridge of the mandibular occlusion floor attached to the mandibular work model The tooth, side incisor, and canine tooth (total 6 teeth) are arranged, and then the artificial molars of the upper and lower jaws are arranged to form gingiva, thereby producing a wax denture.
In the arrangement of artificial molars, it should be possible to obtain a predetermined anteroposterior adjustment curve with respect to the virtual occlusal plane, so that sagittal Christensen phenomenon does not occur in the use of dentures, for the maintenance and stability of dentures, and improved functions such as mastication Needed.
As described in Non-Patent Document 1, there are a mandibular method and a maxillary method as methods for arranging artificial molars.
The mandibular method is a method in which the mandibular prosthesis is first arranged in the mandibular occlusal ridge, and after the mandibular prosthesis is arranged in the mandibular occlusal ridge, it is paired so that it is engaged with the arranged mandibular prosthesis. The maxillary artificial molars that become the molars are arranged in the maxillary occlusal levee according to the usual method.
In the lower jaw method, the buccal cusp and the virtual occlusal plane of the first premolar 41, the second premolar 42, the first premolar 43, and the second premolar 44 of the lower jaw (usually, the occlusal surface of the upper occlusal ridge is virtually assumed) For example, in the case of a mandibular prosthesis with a buccal cusp inclination angle of 20 degrees, the mandibular prosthesis is replaced with a spatula or the like so that the difference (distance) with the occlusal plane is 20 °. Use to arrange in the mandibular bite.
By arranging the mandibular artificial molars in this way, the lower first convex teeth 41, the second premolars 42, the first molars 43, and the second molars 44 of the lower jaw protrude downward. The predetermined front-rear adjustment curve (also referred to as a sagittal adjustment curve) is obtained.
The maxillary method is a method in which the maxillary artificial molars are first arranged in the maxillary occlusal ridge, and after the maxillary artificial molars are arranged in the maxillary occlusal ridge, they are paired so as to be engaged with the arranged maxillary artificial molars. The mandibular prosthetic molar that becomes the molar is arranged in the mandibular occlusal levee according to the usual method.
In the maxillary method, the buccal cusp and the virtual occlusal plane (usually the occlusal surface of the mandibular occlusal ridge is virtually assumed) of the first premolar 51, the second premolar 52, the first molar 53, and the second molar 54 of the upper jaw For example, when the buccal cusp inclination angle is 20 degrees for the maxillary artificial molar, the maxillary artificial molar is replaced with a spatula or the like so that the numerical value is as shown in FIG. Use to arrange in maxillary bite.
By arranging the upper mandibular molars in this way, the upper first convex teeth 51, the second premolars 52, the first molars 53, and the second molars 54 protrude downward as a series of buccal cusps. A predetermined anteroposterior adjustment curve is obtained.

Kenji Hiranuma et al., “Fourth Complete Denture Technique”, Doctor Drug Publishing Co., Ltd., January 20, 1997, p. 88-97

In wax dentures (and therefore dentures) made with an inappropriate anteroposterior adjustment curve applied to artificial molars, sagittal christensen phenomenon occurs due to the mandibular sliding movement etc. Propulsion phenomenon occurs in the denture or it is detached from the mucosal surface, so that the maintenance and stability of the denture cannot be obtained, the functions such as mastication are reduced, and satisfactory results cannot be obtained. Even if a wax denture is produced by the method, it is necessary to arrange the artificial molar on the occlusal ridge so that a predetermined longitudinal adjustment curve suitable for each method is obtained.
In both the maxillary method and the mandibular method, each artificial molar that is arranged using the occlusal surface of the occlusal ridge where the artificial molars that are to be paired are arranged as a virtual occlusal plane While the dental technicians etc. judge the difference (distance) between the buccal cusp and the virtual occlusal plane based on their own experience, each of the buccal cusps from the first premolar to the second premolar Each artificial molar is arranged on the occlusal ridge so as to obtain a predetermined anteroposterior adjustment curve as a series, but a predetermined anteroposterior adjustment curvature is applied to the artificial molar by a single arrangement operation of the artificial molar. This is not easy for a skilled dental technician or the like, and after arrangement of the artificial molar, whether or not a predetermined longitudinal adjustment curve is applied to the artificial molar is arranged on the buccal cusp of each artificial molar. Judgment by visual observation from the difference (distance) from the virtual occlusal plane It is not easy, and even if it can be determined that the predetermined anteroposterior adjustment curve is not applied, it is possible to identify the artificial molar that requires correction of the arrangement in order to apply the predetermined anteroposterior adjustment curve. The degree of the correction cannot be easily grasped, and eventually, the correction of the arrangement of the artificial molars is repeated until it is visually determined that an acceptable anteroposterior adjustment curve can be given through trial and error. However, despite the fact that only an acceptable degree of front and rear adjustment curvature can be applied, operations such as correcting the arrangement of artificial molars are cumbersome, time consuming and laborious, and production efficiency is good. Absent. And, in the arrangement of artificial molars with an acceptable anteroposterior adjustment curve, even if the artificial molars that are the counter teeth are arranged in the occlusal ridge for the counter molars, a wax denture is obtained. In addition, there are many operations such as occlusal adjustment performed as a post process, and a satisfactory denture can not be obtained, and in some cases, the arrangement of the artificial molar can be started again from the beginning, wax denture, and eventually The production efficiency of dentures must be low.
This device was created as a result of diligent research in view of the above circumstances, and in the preparation of wax dentures, even if the artificial molar is arranged by either the maxillary method or the mandibular method, it is applied to the occlusal levee. It is easy to check whether the anteroposterior adjustment curve as a series of buccal cusps of the arranged artificial molars matches the specified anteroposterior adjustment curve, otherwise the specified anteroposterior adjustment curve By using a wax spatula, etc., it is possible to easily identify the degree of the artificial molar that needs to be corrected and correct the degree of the correction, and to correct the arrangement of the artificial molar based on that, It is an object of the present invention to provide a ruler for confirming an artificial molar arrangement that is useful for obtaining an adjustment curve.

In order to solve the above-mentioned problems, the present invention is (1) a maxillary ruler for confirming a longitudinal adjustment curve of an artificial maxillary molar in which the upper side of a horizontally long plate-like body is arranged by the maxillary method. An artificial molar arrangement confirmation ruler for confirming a longitudinal adjustment curve of a mandibular artificial molar whose lower side is arranged by the mandibular method, wherein the upper ruler part is an upper jaw ruler part The buccal cusp of the maxillary artificial premolar of the first straight ruler comprising a first straight ruler for the artificial premolar and a second straight ruler for the maxillary artificial molar connected to the first straight ruler The upper jaw bent in a U-shape and opened upward at a predetermined obtuse angle formed by the second contact surface between the first contact surface and the second straight ruler portion and the buccal cusp of the maxillary artificial molar The artificial molar has a contact surface with the buccal cusp, and the mandibular ruler is convex downward and has a predetermined radius. And having a contact surface between the buccal cusp tip of the mandibular artificial molars were songs.
(2) In (1), the predetermined obtuse angle is preferably 175 °.
(3) In the above (1) or (2), it is preferable that the predetermined radius is 10.16 cm.
(4) In any one of the above (1) to (3), the abutment surface of the maxillary ruler portion with the buccal cusp of the maxillary artificial molar is perpendicular to the front and back surfaces of the plate-like body,
The abutment surface of the mandibular prosthesis of the mandibular ruler with the buccal cusp is preferably perpendicular to the front and back surfaces of the plate-like body.
(5) In any one of the above (1) to (4), the thickness of the plate-like body is preferably 2.0 to 3.5 mm.
(6) In any one of (1) to (5), the plate-like body is preferably opaque.

Since the present invention is configured as described above, the following effects can be obtained.
Since the ruler for confirming the arrangement of artificial molars of this device has a ruler part for maxillary method and a ruler part for mandibular method, it was arranged regardless of the arrangement of artificial molars by either the maxillary method or the mandibular method. Confirmation of appropriateness of anteroposterior adjustment curvature of artificial molars, ie, maxillary method for each buccal cusp of 4 artificial molars from maxillary first to second molars arranged by maxillary method on maxillary occlusal ridge Applying the abutment surface of the ruler part (the first abutment surface of the first straight ruler part on each buccal cusp of each of the first and second premolars, and each of the first and second molars By attaching the second abutment surface of the second straight ruler to the buccal cusp, the anteroposterior adjustment curve as the buccal cusp of the maxillary artificial molar matches the predetermined anteroposterior adjustment curve based on the maxillary method. Whether or not the first premolar of the lower jaw arranged in the lower jaw occlusal ridge by the lower jaw method to the second molar By attaching the abutment surface of the mandibular ruler to each buccal cusp to 4 artificial molars, the anteroposterior adjustment curve as a sequence of buccal cusps of the mandibular prosthesis is a predetermined anteroposterior adjustment based on the mandibular method It can be easily confirmed by visual observation from the buccal side of the arranged artificial molars whether or not it conforms to the curvature. Regardless of the arrangement of either the maxillary method or the mandibular method, the arranged artificial molars have a predetermined anteroposterior direction. If no adjustment curve is given, the identification of the artificial molars that require correction of the arrangement and the degree of the correction using a wax spatula or the like can be easily grasped in order to give a predetermined longitudinal adjustment curve. Based on this, the necessary arrangement of the artificial molar is corrected, and if the corrected anteroposterior adjustment curve is still not appropriate with the ruler for verifying the artificial molar arrangement, the arrangement is further corrected in the same manner. Necessary artificial molars Since it is only necessary to repeat the operation of identifying and correcting the degree of revision of the prosthetic molar arrangement based on the identification until the predetermined anteroposterior adjustment curve is given, the predetermined anteroposterior The adjustment curve can be easily, quickly and reliably applied.
For this reason, it is easy, quick and reliable to obtain a wax denture by arranging an artificial molar provided with a predetermined longitudinal adjustment curve and an artificial molar serving as a counter molar to an occlusal ridge for a counter molar. In addition, it is possible to reduce the operation such as occlusion adjustment performed as a post-process, and the production efficiency of the wax denture, and thus the denture can be improved.
Further, since the artificial molar arrangement confirmation ruler is made of a horizontally long plate-like body, it is easy to handle, easy to manufacture, and inexpensive.

More specific description will be given below.
When maxillary artificial molars are arranged by maxillary method, confirmation of appropriateness of longitudinal adjustment curve of maxillary left artificial molar arranged in maxillary occlusal ridge, that is, from first maxillary first premolar arranged in maxillary occlusal ridge Confirmation of the arrangement of the artificial molars whether the anteroposterior adjustment curve of the artificial molar as a series of buccal cusps of the 4 molars up to the second molar matches the predetermined anteroposterior adjustment curve by the maxillary method The first abutment surface of the first straight ruler portion of the maxillary method ruler portion is set to the first premolar and the second premolar teeth of the upper jaw with one surface side (for example, the surface side) of the ruler in front. Whether the second abutment surface of the second straight ruler part is placed on the buccal cusp of the buccal cusp of the first maxilla and the second molar of the maxilla, It can be easily confirmed by visual observation from the buccal side of the arranged maxillary left artificial molar, but it is not so In this case, it is possible to easily identify the degree of the left upper molar prosthesis that requires correction of the arrangement using a wax spatula or the like in order to give a predetermined anteroposterior adjustment curve, and it is necessary based on it If the anteroposterior adjustment curve obtained is corrected by the ruler for verifying the artificial molar arrangement, the arrangement is further corrected in the same manner. Since it is necessary to repeat the operation of identifying the required maxillary left artificial molar and grasping the degree of correction, etc., and correcting the arrangement of the maxillary left artificial molar based on it until a predetermined longitudinal adjustment curve is given, It is possible to easily, quickly and surely apply a predetermined longitudinal adjustment curve without requiring a high degree of skill.
Confirmation of the appropriateness of the anteroposterior adjustment curve of the maxillary right artificial molar arranged in the maxillary occlusal ridge, and correction of the arrangement of the maxillary right artificial molar that requires correction when the prescribed anteroposterior adjustment curve is not obtained In order to obtain a predetermined anteroposterior adjustment curve, the same operation as described above is performed with the other surface side (for example, the back surface side) of the artificial molar arrangement confirmation ruler in front, and the arranged upper right artificial prosthesis. It is done by viewing from the cheek side.
For this reason, it is easy, quick and reliable to obtain a wax denture by arranging the maxillary artificial molar with a predetermined longitudinal adjustment curve and the mandibular prosthesis as a counter molar to the mandibular occlusion ridge. In addition, it is possible to reduce the operation such as occlusion adjustment performed as a post-process, and it is possible to improve the production efficiency of wax dentures and, in turn, dentures.

When mandibular prosthetic molars were arranged by the mandibular method, the suitability of the front-rear adjustment curve of the mandibular right artificial molars arranged in the mandibular occlusion ridge was confirmed, that is, from the first premolar of the mandible left arranged in the mandibular occlusion ridge Confirmation of the arrangement of the artificial molars whether or not the anteroposterior adjustment curve of the artificial molar as a series of buccal cusps of the four molars up to the second molar matches the predetermined anteroposterior adjustment curve by the mandibular method The first and second premolars on the left side of the lower jaw are the curved contact surfaces of the lower jaw, which are convex and curved with a predetermined radius, facing one side of the ruler (for example, the front side). It can be easily confirmed by visually observing from the buccal side of the left mandibular prosthesis placed on the buccal cusp of the first molar and the second molar, and whether or not they can be brought into close contact without excess or deficiency. And, if not, to give a predetermined anteroposterior curvature The identification of the mandibular left artificial molar that requires correction of the arrangement using a wax spatula, etc. and the degree of correction can be easily grasped, and based on that, the arrangement of the required artificial left molar is corrected, If the anteroposterior adjustment curve obtained is confirmed by the ruler for confirming the prosthetic molar arrangement, if it is still not appropriate, the identification of the left mandibular prosthesis that requires further amendment and the correction Since it is only necessary to repeat the process of grasping the degree, etc. and correcting the arrangement of the mandibular left artificial molar based on it until a predetermined anteroposterior adjustment curve is given, a predetermined anteroposterior adjustment curve without requiring high skill Can be easily, quickly and reliably performed.
Confirmation of the appropriateness of the anteroposterior adjustment curve of the right mandibular prosthesis arranged in the mandibular ridge, and correct the arrangement of the mandibular right prosthesis that needs to be corrected if the prescribed anteroposterior adjustment curve is not obtained In order to obtain a predetermined anteroposterior adjustment curve, the same operation as described above is performed with the other surface side (for example, the back surface side) of the artificial molar arrangement confirmation ruler in front, and the mandibular right artificial molar arranged in front. However, since the contact surface is a smooth curved surface having a uniform radius, the surface side of the artificial molar arrangement confirmation ruler may be in front.
Because of this, it is easy, quick and reliable to obtain a wax denture by arranging the mandibular prosthesis with a predetermined longitudinal adjustment curve and the maxillary prosthesis as a counter molar to the maxillary occlusal ridge. In addition, it is possible to reduce the operation such as occlusion adjustment performed as a post-process, and it is possible to improve the production efficiency of wax dentures and, in turn, dentures.

It is one Embodiment of the ruler for artificial molar arrangement confirmation of this invention, Comprising: (a) is a front view, (b) is a top view, (c) is a rear view, (d) is a bottom view. It is explanatory drawing which shows the relationship between the ruler for confirmation of the artificial molar arrangement | positioning shown in FIG. 1, the anteroposterior adjustment curve of a maxillary artificial molar, and the anteroposterior adjustment curve of a mandibular artificial molar. It is explanatory drawing which shows the side surface of the upper jaw working model to which the upper jaw occlusal floor in which the front tooth part was arranged and the lower jaw occlusal floor in which the front tooth part was arranged was attached. It is explanatory drawing which shows the state which confirms the suitability of the anteroposterior adjustment curve of the artificial molar of the mandibular wax denture in which the mandibular left artificial molar was arranged by the mandibular method using the artificial molar arrangement confirmation ruler shown in FIG. Description of the relationship between the left artificial molar of the lower jaw denture and the ruler for confirming the arrangement of the artificial molar, with the correct arrangement of the anterior-posterior adjustment curve provided by correcting the arrangement of the lower left artificial molar shown in FIG. FIG. It is explanatory drawing which shows the state which confirms the appropriateness | suitability of the anteroposterior adjustment curvature of the artificial molar of the maxillary wax denture in which the maxillary left artificial molar was arranged by the upper jaw method using the artificial molar arrangement confirmation ruler shown in FIG. Description of the relationship between the left artificial molar of the maxillary wax denture and the ruler for confirmation of the artificial molar arrangement, in which the arrangement of the artificial left upper molar of the maxillary wax denture shown in FIG. FIG. An explanatory diagram showing the anteroposterior adjustment curve of an artificial molar with a mandibular left buccal cusp inclination angle of 20 degrees, showing the difference (distance) between the virtual occlusal plane and the buccal cusp of the mandibular left artificial molar . An explanatory diagram showing the anteroposterior adjustment curve of an artificial molar with a maxillary left buccal cusp tilt angle of 20 degrees, showing the difference (distance) between the virtual occlusal plane and the buccal cusp of the maxillary left artificial molar .

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the invention will be described in more detail with reference to the drawings. Of course, the invention is not limited to the following embodiments.
FIG. 1 shows an embodiment of an artificial molar arrangement confirmation ruler of the present invention.
An artificial molar arrangement confirmation ruler 1 shown in FIG. 1 is composed of a horizontally long plate-like body 2, and an upper jaw ruler for confirming an anteroposterior adjustment curvature of an upper artificial molar whose upper side is arranged by the upper jaw method. The lower part is a ruler part 4 for the lower jaw method for confirming the front-rear adjustment curve of the mandibular artificial molar arranged by the lower jaw method.

The maxillary ruler 3 is bent in a dogleg shape by the first straight ruler 3a for the maxillary artificial premolar and the second straight ruler 3b for the maxillary molar connected to the first straight ruler 3a. And a contact surface 5 with the buccal cusp of the artificial molar opened at a predetermined obtuse angle θ. The contact surface 5 of the maxillary ruler 3 is perpendicular to the front and back surfaces of the plate-like body 2.
The predetermined obtuse angle θ is preferably 172 to 178 ° according to experiments by the present inventors. Most preferred is 175 °. When θ is 175 degrees, the lateral curvature of the abutment surface 5 of the maxillary ruler portion 3 is the buccal side of the four maxillary artificial molar teeth with a buccal cusp inclination of 20 degrees. The difference (distance) between the top of the cusp and the virtual occlusal plane coincides with the front-rear adjustment curve that is set to the numerical values shown in FIG.
The length S1 of the first straight ruler portion 3a is such that at least the first premolar of the upper jaw arranged in the upper occlusal levee by the upper jaw method even if the size of the first premolar and the second premolar is L size. The length needs to be able to be applied to the buccal cusp of the buccal side and the buccal cusp of the second premolar, and is preferably 18 mm or more. In the artificial molar arrangement confirmation ruler 1, the first straight ruler portion 3a extends from the connection point with the second straight ruler portion 3b to the left end (according to the front view of FIG. 1A). Since it can be used as a part for having the ruler 1 for confirming the arrangement of artificial molars, it is straight as it is, but this length is not necessarily required.
The length S2 of the second straight ruler 3b is such that at least the first molars arranged in the maxillary occlusion ridge by the maxillary method even if the size of the first and second molars of the maxilla is L size. It is necessary for the length to be able to be applied to the near distal buccal cusp of the second molar and the near distal buccal cusp of the second molar, and is preferably 21 mm or more. The length of the second straight ruler part 3b of the artificial molar arrangement confirmation ruler 1 shown in FIG. 1 is 21 mm. However, if the length is too long, the artificial ruler arrangement confirmation ruler 1 may interfere with the articulator and the like, which is not preferable.

The lower jaw method ruler portion 4 has a contact surface 6 with a buccal cusp of a lower jaw artificial molar that is convex downward and curved with a predetermined radius. The contact surface 6 of the lower jaw ruler 4 is perpendicular to the front and back surfaces of the plate-like body 2.
The radius is preferably 9.80 to 10.65 mm. Most preferred is 10.16 cm.
When the radius is 10.16 cm, the lateral curvature of the abutment surface 6 of the mandibular ruler 4 is such that the buccal cusp of the lower jaw artificial molar 4 teeth and the virtual occlusal plane are 20 degrees buccal cusp inclination angle. Is the same as that of the front-rear adjustment curve that has the numerical values shown in FIG.
The length S3 of the mandibular ruler 4 is set to the mandibular occlusal ridge by the mandibular method even if the size of the first premolar, the second premolar, the first premolar, and the second premolar is L size. Can be applied to at least the buccal cusp of the first premolar, the buccal cusp of the second premolar, the buccal cusp of the first premolar, the buccal cusp of the second premolar of the arranged lower jaw The length needs to be 30 mm or more.

  The thickness t of the artificial molar arrangement confirmation ruler 1 is 2.0 to 3.5 mm. The sizes of the first and second molars of the maxilla and mandible are S, M, and L. However, the buccal cusps of the maxillary and mandibular artificial molars can come into contact with each other without detaching from the abutment surfaces 5 and 6, and there is a risk of interference with the lingual cusps of the maxillary and mandibular artificial molars. In addition, it is preferable because there is no hindrance in handling and the front-rear adjustment curve can be easily and quickly and reliably visually confirmed from the cheek side. Most preferred is 2.8 mm.

On the front and back surfaces of the ruler 1 for confirming the arrangement of the artificial molars, an indicator 8 indicating the connection point between the first straight ruler portion 3a and the second straight ruler portion 3b is displayed. The marker 8 distinguishes the maxillary ruler portion 3 into a first straight ruler portion 3a for the maxillary molar side and a second straight ruler portion 3b for the maxillary molar side.
The mark 8 also indicates the connection position between the end of the first contact surface 5a of the first straight ruler 3a and the start of the second contact surface 5b of the two straight ruler 3b.
The sign 8 is a triangle, but is not limited to this, and various signs such as an arrow, a diamond, and a straight line are possible. However, the sign 8 needs to be displayed at least on the upper side.

A linear marker 9 orthogonal to the first straight ruler portion 3a and reaching the lower jaw ruler portion 4 from the first straight ruler portion 3a is displayed at a substantially central position on the front and back surfaces of the artificial molar arrangement ruler 1. ing. The marker 9 distinguishes the mandibular ruler 4 between the premolar side and the molar side of the mandible. Geometrically, the straight line of the linear marker 9 and the tangent line between the arc of the side edge of the mandibular ruler portion 4 are orthogonal to each other.
The marker 9 is a straight line that is orthogonal to the first straight ruler portion 3a and reaches the lower jaw ruler portion 4 from the first straight ruler portion 3a, but is not limited thereto, and may be displayed at least on the lower side. preferable.
The marker 9 is not limited to a straight line, and may be a linear one such as a dotted line. Furthermore, an appropriate one such as an arrow, a triangle, or a rhombus can be adopted.
In addition, the label | marker 8 and the label | marker 9 are not necessarily required.

  As the ruler 1 for confirming the arrangement of the artificial molars, a material such as a metal such as an aluminum alloy, a synthetic resin, a synthetic rubber, or a ceramic can be used. The artificial molar arrangement confirmation ruler 1 is preferably opaque, and if transparent, it may be made opaque by coloring or the like. If the artificial ruler arrangement confirmation ruler 1 is opaque, when the maxillary ruler part is applied to each buccal cusp of four artificial molars from the first premolar to the second premolar of the arranged maxilla The state of contact between each buccal cusp tip and the contact surface 5 of the maxillary ruler 3 is easily grasped visually from the buccal side of the maxillary artificial molar, and from the arranged first lower premolars When the mandibular ruler is applied to each buccal cusp of the four artificial molar teeth up to the second molar, the state of contact between each buccal cusp and the contact surface 6 of the mandibular ruler 4 Is easy to grasp visually from the buccal side of the mandibular prosthesis, and as a result, it is possible to easily, quickly and surely confirm the suitability of the longitudinal adjustment curve of the arrangement of the four artificial molars in both the maxillary method and the mandibular method. Become.

FIG. 2 shows a left upper jaw assuming that a predetermined anteroposterior adjustment curve is given by the first straight ruler portion 3a and the second straight ruler portion 3b of the upper jaw ruler portion 3 of the artificial molar arrangement confirmation ruler 1 and the upper jaw method. Of the first premolar 11, the second premolar 12, the first premolar 13, and the second premolar 14, and a predetermined front-and-back adjustment curve was given by the mandibular ruler 4 and the mandibular method. The relationship between the first premolar 21, the second premolar 22, the first premolar 23, and the second premolar 24 on the left lower jaw is shown.
In the following description, it is assumed that the predetermined obtuse angle θ in the upper jaw ruler portion of the artificial molar arrangement ruler 1 is 175 ° and the predetermined radius in the lower jaw ruler portion is 10.16 cm.

The first straight ruler portion 3a of the maxillary method ruler portion 3 is on the buccal cusp tip 11a of the first premolar 11 on the left upper jaw, the buccal cusp tip 12a of the second premolar tooth 12 is the second straight ruler portion 3b. It is applied to the mesial buccal cusp tip 13a, the distal buccal cusp tip 13b of the first molar 13 and the mesial buccal cusp tip 14a and the distal buccal cusp tip 14b of the second molar 14 in the shape of a circle. The contact surface 5 which is bent and opened upward at 175 ° is in direct contact with each buccal cusp without any excess or deficiency.
Specifically, in this state, the first contact surface 5a of the first straight ruler 3a is the buccal cusp 11a of the first premolar 11 on the left upper jaw and the buccal cusp 12a of the second premolar 12 The second contact surface 5b of the second straight ruler portion 3b is in contact with the mesial buccal cusp 13a, the distal buccal cusp 13b, and the mesial cheek of the second molar 14. It is in contact with the side cusp tip 14a and the distal cheek side cusp tip 14b.

  The mandibular ruler 4 includes the buccal cusp 21a of the first premolar 21 of the lower jaw, the buccal cusp 22a of the second premolar 22, the mesial buccal cusp 23a of the first molar 23, and the distal buccal side Each buccal cusp apex is applied to a curved contact surface 6 that protrudes downward and has a radius of 10.16 cm, and is applied to the cusp crest 23b, the mesial buccal crest 24a of the second molar 24, and the distal buccal crest 24b. Is in perfect contact with no shortage.

Hereinafter, the usage method of the ruler part 4 for the lower jaw method will be described.
FIG. 3 shows an upper working model 19 to which an upper occlusal floor in which upper and lower anterior teeth 15 of a maxillary central incisor 15, a side incisor 16 and a canine 17 are arranged in an upper occlusal levee 18 is attached, and a lower jaw A mandibular working model 29 to which a mandibular occlusal floor is attached, in which the left and right front teeth 6 of the incisor 25, the side incisor 26, and the canine 27 are arranged in the mandibular occlusion wall 28, is attached to an articulator (not shown). The side of the state is shown. In this state, according to the mandibular method, for example, the first premolar tooth 21, the second premolar tooth 22, the first premolar tooth 23, and the second premolar tooth 24 on the left lower jaw are first arranged in the mandibular occlusion bank 28.
Specifically, after performing an operation such as excision or melting or softening and removing the wax at a position corresponding to the first premolar of the lower jaw occlusal ridge 28 using a wax spatula or the like, the articulator is operated. In the closed state, with reference to the virtual occlusal plane (using the lower surface of the maxillary occlusal ridge 18), the distance between the virtual occlusal plane and the buccal cusp of the first premolar 21 is the numerical value shown in FIG. Adjustment is performed by visual measurement, and the neck portion side of the first premolar teeth 21 is embedded in the mandibular occlusal levee 28 using a wax spatula or the like and arranged. Similarly, the virtual occlusal plane and the first molar 23 are arranged so that the distance between the virtual occlusal plane and the buccal cusp of the second premolar teeth 22 becomes the numerical value shown in FIG. The distance from the side cusp is adjusted and adjusted so that the value is as shown in FIG. 8, and the distance between the virtual occlusal plane and the buccal cusp of the second molar 24 is the value shown in FIG. Adjust and so on.

  Next, the first premolar, the second premolar, the first premolar, and the second premolar on the right mandible are arranged on the mandibular occlusal ridge 28, which may be performed in the same manner as described above. The detailed explanation is omitted.

  FIG. 4 shows the first premolar 21 of the lower jaw left according to the lower jaw method after the lower incisor 25, the side incisor 26 and the canine 27 are arranged on the occlusal ridge of the lower jaw occlusal floor attached to the lower jaw working model 29. Appropriateness of anteroposterior adjustment curvature as a series of buccal cusps of the left artificial molar 4 of the lower waxy denture 30 in which the second premolar 22, first molar 23, and second molar 24 are arranged Is confirmed using the ruler 1 for confirming an artificial molar arrangement.

As shown in FIG. 4, the front / rear side of the artificial molar arrangement confirmation ruler 1 is in front of the lower jaw, as shown in FIG. A curved contact surface 6 having a radius of 10.16 cm and projecting below the lower jaw ruler portion 4 is placed on the left lower bicuspid 22 and the first molar 23 so that the curved lower abutment surface 6 has a radius of 10.16 cm. It is applied to each buccal cusp of the first premolar 21, the second premolar 22, the first premolar 23, and the second premolar 24, and whether or not the left mandibular left artificial molar 4 is in contact with each other without any excess or deficiency. If it is easily confirmed by visual inspection from the buccal side, and it is not in perfect contact without excess or deficiency, use of a wax spatula etc. to identify the mandibular left molars that need to be corrected and the extent of the correction Etc. can be easily grasped.
Since the contact surface 6 is a smooth and uniform curved surface having a radius of 10.16 cm, in actual use, the label 9 is not necessarily provided between the second premolar 22 and the first molar 23 on the left lower jaw. There is no problem even if it is not used as it comes.

When the buccal cusp of the lower mandibular left artificial molar 4 and the abutment surface 6 of the mandibular ruler 4 are not in perfect contact with each other (ie, the left and right artificial molars 4 have predetermined front and back (If the adjustment curve was not applied), the occlusal ridge of the artificial molar that needed correction was melted and softened using a wax spatula, etc., and the arrangement of the artificial molar that needed correction was corrected and obtained If it is confirmed by the lower ruler part 4 for the artificial molar arrangement confirmation ruler 1 that the anteroposterior adjustment curve is still not appropriate, the identification of the left lower artificial artificial tooth that requires further arrangement correction and its What is necessary is just to repeat the grasping | ascertainment etc. of correction | amendment etc., and the correction operation of the arrangement of the artificial molar of the left lower jaw based on it until a predetermined front-back adjustment curve is provided.
Therefore, it is possible to easily, quickly and surely apply a predetermined longitudinal adjustment curve without requiring a high degree of skill.

Check whether the first and second premolars, second premolars, first premolars, and second premolars of the mandibular right arranged on the occlusal ridge of the mandible are suitable for the anteroposterior adjustment curve. With the back side of the ruler 1 facing forward, the marker 9 is placed between the second premolar 22 and the first molar 23 on the right lower jaw, and the ruler portion 4 for the lower jaw is placed on the first premolar 21 on the right lower jaw. The buccal cusps of the second premolars 22, the first molars 23, and the second molars 24 are applied to the curved contact surface 6 having a radius of 10.16 cm and projecting downward. It can be easily confirmed by visual observation from the buccal side of the 4 artificial molars on the right lower jaw whether there is no excess or deficiency. If there is no excess or deficiency, it can be arranged using a wax spatula. Easy identification of the right mandibular prosthesis that requires correction and the extent of the correction It can be.
When the buccal cusp of the lower mandibular right artificial molar 4 and the abutment surface 6 of the mandibular ruler 4 are not in perfect contact with each other (that is, the right and left artificial molars 4 have predetermined front and rear (If the adjustment curve was not applied), the occlusal ridge of the artificial molar that needed correction was melted and softened using a wax spatula, etc., and the arrangement of the artificial molar that needed correction was corrected and obtained If the mandibular ruler 4 for the prosthetic molar arrangement confirmation ruler 1 confirms that the anteroposterior adjustment curve is still not appropriate, the identification of the right mandibular artificial molar that requires further arrangement modification and its What is necessary is just to repeat the grasping | ascertainment etc. of correction | amendment etc., and the correction operation of the arrangement | positioning of the artificial molar of the lower jaw right based on it until a predetermined front-back adjustment curvature is provided.
The abutment surface 6 of the lower jaw method ruler portion 4 of the artificial molar arrangement confirmation ruler 1 has a downwardly convex curved uniform and smooth curved surface with a radius of 10.16 cm. Confirmation of the suitability of the front-rear adjustment curve of the 4 artificial molar teeth of the 4 lower jaw dentures 30 may be performed with the back side of the artificial molar arrangement confirmation ruler 1 facing forward, or the artificial molar arrangement confirmation ruler 1 Alternatively, the front side may be the front side.

  FIG. 5 shows the mandibular wax denture 30 shown in FIG. 4 in which the arrangement of the artificial molar to be corrected is modified to give a predetermined anteroposterior adjustment curve, and the lower jaw of the artificial molar arrangement confirmation ruler 1 The ruler part 4 is applied to each buccal cusp of the first first molar 21, the second premolar 22, the first molar 23 and the second molar 24, and these buccal cusps are downward. It shows a state in which it is in close contact with the curved contact surface 6 that is convex and has a radius of 10.16 cm without excess or deficiency.

In order to produce an upper jaw denture using the lower jaw denture 30 to which a predetermined longitudinal adjustment curve is given, according to a common method, the artificial jaw teeth of the lower jaw denture 30 satisfy an appropriate occlusal relationship and so on. The first premolar, the second premolar, the first premolar and the second premolar on the left upper mandible, which becomes a countermolar using a wax spatula, etc. The first premolar, the second premolar, the first premolar, the second premolar on the right upper jaw, for example, the first premolar on the left upper jaw, the first premolar on the right upper jaw, the second premolar on the left upper jaw The maxillary right second premolar, the maxillary left first premolar, the maxillary right first premolar, the maxillary left second premolar, and the maxillary right second premolar are arranged in this order to produce an maxillary wax denture To do.
As a result, the first and second premolars, the second premolars, the first premolars, and the second premolars of the upper and lower jaws are provided with a longitudinal adjustment curve that satisfies an appropriate occlusal relationship with the four artificial molars of the lower jaw denture. The

  The obtained wax denture is subjected to occlusal adjustment, gingival formation, trial application to the patient, etc. in accordance with the usual methods, and then the gypsum resin, the wax wax, and the denture base resin for the denture base into the cavity formed in the plaster A denture suitable for a patient can be prepared by filling, polymerizing and curing a cage resin, excavating from gypsum, modifying, polishing, and the like.

Next, the usage method of the ruler part 3 for the upper jaw method will be described.
In the state shown in FIG. 3, according to the maxillary method, the maxillary occlusal ridge 18, the upper and lower first premolars 11, the upper and lower second premolars 12, the upper and lower first molars 13, and the upper jaw The left and right second molars 14 are arranged in this order.
Specifically, after performing an operation such as excision or melting or softening the wax corresponding to the first premolar of the maxillary occlusal ridge 18 using a wax spatula or the like, the articulator is operated. In the closed state, the virtual occlusal plane (using the upper surface of the lower jaw occlusal ridge 28) is used as a reference so that the distance between the virtual occlusal plane and the buccal cusp of the first premolar 11 becomes the numerical value shown in FIG. Adjustment is performed by visual measurement, and the side of the left and right first premolar teeth 11 is embedded in the maxillary occlusal levee 18 and arranged using a wax spatula or the like. Similarly, the virtual occlusal plane and the left and right first large left and right premolar teeth 12 are arranged so that the distance between the buccal cusp of the second premolar teeth 12 becomes the value shown in FIG. The distance between the molar 13 and the buccal cusp of the buccal cusp is adjusted so as to be the value shown in FIG. 9, and the distance between the virtual occlusal plane and the buccal cusp of the left and right second molars 14 is as shown in FIG. Adjust to the numerical value shown in

  6 shows the upper jaw left side according to the upper jaw method after the maxillary central incisor 15, side incisor 16, and canine 17 have been arranged on the occlusal ridge 18 (see FIG. 3) of the upper occlusal floor attached to the upper jaw working model 19. As a series of buccal cusps of the left four artificial molar teeth of the maxillary wax denture 20 in which the first molar teeth 11, the second molar teeth 12, the first molar teeth 13 and the second molar teeth 14 are arranged. The state in which the propriety of the anteroposterior adjustment curve is confirmed using the artificial molar arrangement ruler 1 is shown.

  As shown in FIG. 6, the front / rear side of the artificial molar arrangement confirmation ruler 1 is in front of the upper jaw as shown in FIG. The first abutment surface 5a of the first straight ruler portion 3a of the maxillary ruler 3 and the second straight ruler portion so that the marker 8 is between the left second premolar 12 and the first molar 13 Of the abutment surface 5 of the maxillary artificial molar that is bent in the shape of a circle formed by the second abutment surface 5b of 3b and opens upward at an obtuse angle of 175 °, the first abutment surface 5a On the buccal cusp of the first premolar 11 and second premolar 12 on the left upper jaw, and the buccal cusp of the first premolar 13 and second premolar 14 on the left upper jaw on the second abutment surface 5b. It can be easily confirmed by visually observing from the buccal side of the upper 4 artificial molars, whether or not it is in perfect contact without excess or deficiency. If the snug without not in contact with the wax spatula or the like extent of maxillary left artificial molars of a particular and its modifications, etc. can be easily understood that require modification of Hairetsu using.

When each buccal cusp of the upper maxillary left artificial molar 4 and the abutment surface 5 of the maxillary ruler 3 are not in perfect contact with each other (that is, the predetermined upper and lower teeth on the upper maxillary left artificial molar 4) If the artificial curvature is not applied), use a wax spatula or the like to melt and soften the occlusal ridge of the required artificial molar to correct the arrangement of the artificial molar that needs to be corrected. If it is confirmed by the maxillary ruler 3 of the artificial molar arrangement confirmation ruler 1 that the adjustment curve is still not appropriate, similarly, the identification of the left upper molar prosthesis that requires further arrangement correction and its correction What is necessary is just to repeat the operation of grasping the degree and the like and correcting the arrangement of the maxillary left artificial molar based on it until a predetermined anteroposterior adjustment curve is given.
Therefore, it is possible to easily, quickly and surely apply a predetermined longitudinal adjustment curve without requiring a high degree of skill.

Check whether the right and left first premolars, second premolars, first premolars, and second premolar adjustment curves arranged in the upper occlusal ridge are appropriate for the artificial molar arrangement With the back side of the ruler 1 facing forward, the marker 8 is placed between the second premolars 22 and the first molars 23 on the right upper jaw, and the first straight ruler part 3a of the maxillary ruler part 3 The first abutment surface 5a is located on the buccal cusp of the first premolar 11 and the second premolar 12 on the right upper jaw, and the second abutment surface 5b is located on the first molar 13 and the second premolar 14 on the left upper jaw. If it is applied to each buccal cusp, it can be easily confirmed by visual observation from the buccal side of the upper 4 artificial molars whether or not it is in perfect contact. , Identification of the maxillary right artificial molar that requires correction of the arrangement using a wax spatula, etc. You can grasp the easy.
When the buccal cusp of the right mandibular artificial molar 4 teeth and the abutment surface 5 of the maxillary ruler 3 are not in perfect contact with each other (that is, the right and left artificial molars 4 have predetermined front and back (If the adjustment curve was not applied), the occlusal ridge of the artificial molar that needed correction was melted and softened using a wax spatula, etc., and the arrangement of the artificial molar that needed correction was corrected and obtained If the maxillary ruler 3 for the prosthetic molar arrangement confirmation ruler 1 confirms that the anteroposterior adjustment curve is still not appropriate, the identification of the right maxillary artificial molar that requires further arrangement modification and its What is necessary is just to repeat the grasping | ascertainment etc. of correction | amendment etc., and the correction operation of the arrangement of the artificial molar of the right upper jaw based on it until a predetermined front-back adjustment curve is provided.

FIG. 7 shows the maxillary method of the artificial molar arrangement confirmation ruler 1 by correcting the arrangement of the artificial molar to be corrected among the artificial left molars of the maxillary wax denture shown in FIG. The first straight ruler portion 3a of the ruler portion 3 is located on the buccal cusps of the first premolar teeth 11 and the second premolar teeth 12 on the left upper jaw, and the second straight ruler portion 3b is the first premolar teeth 13 and second large A state in which the buccal cusp cusp is bent in a U-shape and is in contact with the abutment surface 5 opened at an obtuse angle of 175 ° upward without any deficiency. Is shown.
Specifically, in this state, the first contact surface 5a of the first straight ruler portion 3a is on the buccal cusp tip 11a of the first premolar 11 on the left upper jaw and the buccal cusp tip 12a of the second premolar. The second contact surface 5b of the second straight ruler portion 3b is in contact with the mesial buccal cusp 13a, the distal buccal cusp 13b of the first molar 13, and the mesial cheek of the second molar 14. It is in contact with the side cusp tip 14a and the distal cheek side cusp tip 14b.

In order to produce a lower wax denture using the upper wax denture 20 to which a predetermined longitudinal adjustment curve is applied, according to a common method, the artificial molar of the upper wax denture 20 satisfies an appropriate occlusal relationship and so on. The first premolar, the second premolar, the first premolar, the second premolar on the left mandibular, which becomes a countermolar using a wax spatula, etc., on the occlusal ridge of the mandibular occlusal floor in which the mandibular anterior teeth are arranged The first premolar, the second premolar, the first premolar, the second premolar on the right lower jaw, for example, the first premolar on the left lower jaw, the first premolar on the right lower jaw, the second premolar on the left lower jaw Mandibular wax dentures are arranged in the order of the second premolar on the right lower jaw, the first premolar on the left lower jaw, the first premolar on the right lower jaw, the second premolar on the left lower jaw, and the second premolar on the right lower jaw To do.
As a result, the first and second premolars, the second premolars, the first premolars, and the second premolars on the left and right sides of the lower jaw are provided with a longitudinal adjustment curve that satisfies an appropriate occlusal relationship with the upper four artificial molars. The

  The obtained wax denture is subjected to occlusal adjustment, gingival formation, trial application to the patient, etc. in accordance with the usual methods, and then the gypsum resin, the wax wax, and the denture base resin for the denture base into the cavity formed in the plaster A denture suitable for a patient can be prepared by filling, polymerizing and curing a cage resin, excavating from gypsum, modifying, polishing, and the like.

  When the ruler 1 for confirming the arrangement of the artificial molars is used, the second abutment surface 5b of the second straight ruler part 3b of the ruler part 3 for the maxilla method is used for the first premolar teeth 11 and the second premolar teeth 12 of the upper jaw. It can be applied to each buccal cusp, and the first contact surface 5a of the first straight ruler part 3a can be applied to each buccal cusp of the maxillary first molar 13 and second molar 14. In addition, the length of the first straight ruler portion 3a does not contact the articulator or the like (for example, the length S2 of the second straight ruler portion 3b is 21 mm, and the length S1 of the first straight ruler portion 3a is also 21 mm), there is no problem, so that one side (for example, the front side) of the artificial molar arrangement confirmation ruler 1 is in front, and the right and left artificial molars are confirmed to be suitable for the longitudinal adjustment curve. The maxillary prosthetic molars that need to be corrected if the predetermined anteroposterior adjustment curve is not obtained It performs string correcting may be performed an operation to obtain a predetermined longitudinal regulation curve.

The artificial ruler arrangement confirmation ruler of the present invention is not limited to that shown in FIG.
For example, a gripping part for easy gripping with a finger is formed on the left end of an artificial molar arrangement confirmation ruler, and a length measurement scale is provided on the maxillary ruler part and the mandibular ruler part. You may enable it to measure the near-centrifugal length etc. of a molar.

  An artificial molar arrangement ruler 1 shown in FIG. 1 is an upper jaw ruler for confirming a longitudinal adjustment curve of an upper molar prosthesis having a buccal cusp inclination angle of 20 degrees, the upper side of which is arranged by the upper jaw method. The lower jaw part is arranged by the lower jaw method, and the buccal cusp inclination angle is a ruler part for lower jaw method for confirming the front and rear adjustment curvature of the mandibular artificial molar, The ruler portion for the lower jaw method has the predetermined shape as described above. However, the ruler for confirming the arrangement of the artificial molar of the present invention is not limited to this, for example, the cheek with the upper side portion arranged by the upper jaw method. Maxillary ruler for confirming the anteroposterior adjustment curve of maxillary prosthetic molar with side cusp inclination of 30 degrees, before and after mandibular prosthesis with buccal cusp inclination of 30 degrees arranged by mandibular method As a ruler for the lower jaw method to confirm the dynamic adjustment curve In this case, the shape and the like of the upper jaw ruler and the lower jaw ruler are the same as those of the upper jaw ruler and lower jaw ruler shown in FIG. It will be different from the shape.

1 Ruler for confirmation of artificial molar arrangement 2 Plate-like body 3 Ruler part for maxillary method 4 Ruler part for mandibular method

Claims (6)

Front and back of the mandibular prosthesis with the lower side arranged as a ruler for the maxillary prosthesis, and the lower side as the ruler for the maxillary prosthesis. A ruler for confirming the arrangement of artificial molars as a ruler for mandibular method for confirming the dynamic adjustment curve,
The maxillary ruler portion includes a first straight ruler portion for maxillary artificial premolars and a second straight ruler portion for maxillary artificial molars connected to the first straight ruler portion. Bent in the shape of a circle formed by the first contact surface with the buccal cusp of the maxillary artificial premolar and the second contact surface with the buccal cusp of the maxillary artificial premolar of the second straight ruler It has a contact surface with the buccal cusp of the maxillary artificial molar opened at a predetermined obtuse angle above,
The ruler for mandibular arrangement, wherein the ruler portion for mandibular method has a contact surface with a buccal cusp of a mandibular artificial molar convex downward and curved with a predetermined radius.   2. The ruler for confirming an artificial molar arrangement according to claim 1, wherein the predetermined obtuse angle is 175 [deg.].   The ruler for confirming an artificial molar arrangement according to claim 1 or 2, wherein the predetermined radius is 10.16 cm. The contact surface with the buccal cusp of the maxillary artificial molar in the maxillary ruler is perpendicular to the front and back surfaces of the plate-like body,
The artificial surface according to any one of claims 1 to 3, wherein a contact surface of the mandibular artificial molar of the mandibular ruler with the buccal cusp is perpendicular to a front surface and a back surface of the plate-like body. A ruler for confirmation of molar arrangement.   The ruler for confirming the arrangement of an artificial molar according to any one of claims 1 to 4, wherein the plate-like body has a thickness of 2.0 to 3.5 mm.   The ruler for confirming the arrangement of an artificial molar according to any one of claims 1 to 5, wherein the plate-like body is opaque.

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