JP4073475B1 - Work model manufacturing method and cutting base used in this method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a work model capable of recycling some components.
A work model manufacturing method comprising a support base made of synthetic resin, a fixing plate to which a tooth model is fixed, and a dowel pin implanted in the fixing plate. This manufacturing method includes a pin insertion step of inserting dowel pins 6 into the connection holes of the support base 2, a frame mounting step of mounting the base frame member 52 on the support base 2, and the support base 2 and the base frame member. 52 includes a plate forming step of injecting gypsum into the injection space 54 defined by 52 to form a fixing plate, and a processing step of processing so that the surface of the formed fixing plate becomes flat.
[Selection] Figure 7

Description

  The present invention relates to a working model manufacturing method used when a dental technician or the like manufactures a tooth model, and a cutting base used for the method.

  In general, a work model used when manufacturing a tooth model includes a support base, a fixing plate to which the tooth model is fixed, and a dowel pin implanted in the fixing plate (for example, a patent). Reference 1). In this working model, as shown in FIG. 14, the support base 102 includes a base main body 104 and an upper plate 106 mounted on the base main body 104. A connection hole 108 is provided in the plate 106. The base body 104 is made of synthetic resin, and the upper plate 106 is made of gypsum. The fixing plate 110 is made of gypsum, and the dowel pin 112 is fixed to the fixing plate 110, and the dowel pin 112 is inserted into the connecting hole 108 of the base body 104 and the upper plate 106, thereby fixing the fixing plate 110. 110 is attached to the upper plate 106.

  Such a working model is manufactured as follows, for example. The base body 104 is manufactured by injection molding of synthetic resin, and the upper plate 106 is manufactured by injecting gypsum mud into an injection mold and curing it. Further, the dowel pin 112 is temporarily fixed at a predetermined position of the injection mold, and gypsum mud is injected into the injection mold in such a temporary fixed state, whereby the fixing plate 106 provided with the dowel pin 112 is manufactured. Thereafter, the upper plate 106 is attached to the base body 104 to form the base body 102, the dowel pins 112 are inserted into the connection holes 108 of the base body 102, and the fixing plate 110 is attached to the base body 102. The tooth model 114 is fixed to the upper surface of the fixing plate 110 with, for example, an adhesive, and the working model is thus formed.

JP 2006-223893 A

  The conventional working model described above has the following problems to be solved. First, since the base body portion 104 of the base body 102 is made of synthetic resin, the use of gypsum for the base body portion 104 is eliminated, and the amount of gypsum used can be reduced. Gypsum is still used for the upper plate 106 of the base body 102, and further reduction of the use of gypsum is desired.

  Secondly, since the base body 102 is composed of the base body portion 104 and the upper plate 106, there is a problem that the configuration of the work model becomes complicated and the manufacturing cost thereof becomes high.

  Third, in such a working model, once used, the base body 102 (base body 104 and upper plate 106), the fixing plate 110 and the tooth model 114 fixed to the fixing plate 110 are all removed. In order to discard, the amount of discard is large, and reuse of some components is desired.

The objective of this invention is providing the manufacturing method of the working model which can reduce the usage-amount of gypsum compared with the past.
Another object of the present invention is to provide a method for manufacturing a work model that allows some components to be recycled.

  Yet another object of the present invention is to provide a cutting base used to allow recycling of some components.

According to a first aspect of the present invention, there is provided a work model manufacturing method comprising: a support base made of synthetic resin; a fixing plate to which a tooth model is fixed; and a dowel pin implanted in the fixing plate. A manufacturing method for reusing a support base in a working model provided,
A pin inserting step of inserting the dowel pin into the connection hole of the support base; a frame mounting step of mounting a base frame member on the upper portion of the support base; and an injection defined by the support base and the base frame member It includes a plate forming step for forming the fixing plate by injecting gypsum into the space, and a processing step for processing the surface of the formed fixing plate to be flat.

  Moreover, in the manufacturing method of the working model according to claim 2 of the present invention, a model fixing step of fixing the tooth model on the surface of the fixing plate, a cutting step of cutting the tooth model and the fixing plate, In the cutting step, a cutting base made of gypsum is used, and the cutting base is provided with an insertion hole corresponding to the dowel pin implanted in the fixing plate. The dowel pin of the fixing plate to which the tooth model is fixed is inserted into the insertion hole of the cutting base.

  In the method for manufacturing a work model according to claim 3 of the present invention, the support base is repeatedly used, and in the pin insertion step, the dowel pins are inserted into the connection holes of the reusable support base material. It is characterized by being.

The cutting base according to claim 4 of the present invention is a cutting base used when cutting a fixing plate to which a tooth model is fixed, and includes a base main body formed of gypsum. The base body is provided with an insertion hole corresponding to a dowel pin implanted in the fixing plate, a tube is attached to the insertion hole, and the dowel pin implanted in the fixing plate is provided with the dowel pin. It is inserted into the tube attached to the insertion hole .

According to the manufacturing method of the work base according to claim 1 of the present invention, since the whole support base is made of synthetic resin and the fixing plate is made of gypsum, it is fixed that gypsum is formed. A working base with a small amount of gypsum can be provided. In addition, the dowel pin is inserted into the connection hole of the support base, a base frame member is mounted on the upper part of the support base, and gypsum is injected into the injection space defined by the support base and the base frame member. Therefore, the fixing plate can be formed easily, and the fixing plate corresponding to each support base can be formed. In addition, by manufacturing in this way, the support base can be reused, and an environment-friendly work base can be provided by repeatedly using the support base.

  Moreover, according to the manufacturing method of the work model of Claim 2 of this invention, since the cutting base formed from the gypsum is used in a cutting process, the damage | wound at the time of a cutting | disconnection, etc. are the cutting base. By using the cutting base in this way, the support base can be recycled. Since the cutting base is provided with an insertion hole for inserting a dowel pin, the fixing plate to which the dental model is fixed can be mounted on the cutting base as required.

  Further, according to the method for manufacturing a working model according to claim 3 of the present invention, the support base is repeatedly used, and when reused, the dowel pin is inserted into the connection hole of the support base, and the same as described above. Thus, it is possible to provide a manufacturing method suitable for recycling the support base.

Moreover, according to the cutting base of Claim 4 of this invention, since the base main body is formed from the plaster, the fixing plate to which the dental model is fixed can be cut as required. . In addition, since the tube is installed in the insertion hole of the base body, the dowel pin implanted in the fixing plate can be easily inserted into the tube of the insertion hole, and there is some error in the fixing plate. Even so, it can be mounted stably and reliably.

  Hereinafter, with reference to an accompanying drawing, a manufacturing method of a work model according to the present invention and a cutting base used for this will be described. 1 is a front view showing a work model manufactured by the manufacturing method according to the present invention, FIG. 2 is a cross-sectional view showing the work model of FIG. 1, and FIG. 3 is an exploded view of the work model of FIG. FIG. 4 is a perspective view showing a cutting base, and FIG. 5 is a cross-sectional view showing a state in which a dental plate is cut by mounting a fixing plate on the cutting base. 6 is a view showing a state where dowel pins are attached to the support base, FIG. 7 is a cross-sectional view showing a state where a base frame member is attached to the upper part of the support base, and FIG. FIG. 9 is a cross-sectional view showing a state in which gypsum mud is injected into the member, and FIG. 9 is a cross-sectional view showing a state in which the base frame member and the fixing plate are detached from the support base after the gypsum is cured. FIG. 11 is a cross-sectional view showing a state after processing the surface of the fixing plate. FIG. It is a sectional view showing a state in which the bets mounted.

  1 to 3, the illustrated working model includes a support base 2, a fixing plate 4 attached to the upper side of the support base 2, and a dowel pin 6 planted on the fixing plate 4. . The support base 2 is formed from a synthetic resin, for example, a polyethylene resin, a polypropylene resin, a nylon resin, a urethane resin, and the like. By forming the support base 2 from the synthetic resin in this way, the amount of gypsum used can be reduced. The fixing plate 4 is made of gypsum. By forming the fixing plate 4 from gypsum in this way, the subsequent tooth model 8 can be cut as required. The dowel pin 6 is composed of a metal pin.

  The support base 2 includes a support base body 10 having a peripheral side wall 7 and an upper wall 9, and a support protrusion 12 is integrally provided on the upper wall 9 of the support base body 10. On the upper surface of the support protrusion 12, a pair of first connection protrusions 14 extending in a first direction which is the longitudinal direction (the left-right direction in FIGS. 1 and 2 and the direction from the lower left to the upper right in FIG. 3) are provided. And three sets of second connecting projections 16 extending in a direction perpendicular to the longitudinal direction (a direction perpendicular to the paper surface in FIGS. 1 and 2, a direction from the lower right to the upper left in FIG. 3). Yes. The first connection protrusions 14 are provided at both ends of the support protrusion 12, and the second connection protrusions 16 are provided at both sides of the support protrusion 12 with an interval in the first direction.

  The support base 2 is provided with four connecting holes 18 spaced in the longitudinal direction. The two connection holes 18 are provided in the center of the support base 2 in the first direction with an interval in the second direction, and the remaining two connection holes 18 are two connection holes in the first direction. 18 on both sides. In the illustrated embodiment, a space 20 extending inward from the bottom surface of the support base body 10 is provided, and a cylindrical protrusion 22 extending from the inner surface of the upper wall 9 into the space 20 corresponding to each connecting hole 18 is provided. The connecting hole 18 is provided through the cylindrical protrusion 22.

  The fixing plate 4 is formed in a plate shape corresponding to the shape of the support protrusion 12 of the support base 2, and dowel pins 6 are provided correspondingly to the connection holes 18 of the support base 2. The dowel pin 6 is formed in a taper shape whose outer diameter gradually decreases toward the tip, and correspondingly, each connecting hole 18 of the support base 2 is at the tip of the cylindrical protrusion 22 (downward in FIGS. 1 and 2). The inner diameter is gradually reduced toward the tip (see FIG. 2).

  On the inner surface of the fixing plate 4, that is, the surface from which the dowel pin 6 protrudes, a pair of first connection recesses 24 are provided corresponding to the first connection protrusions 14 of the support base 2 (see FIG. 2). Three sets of second connection recesses 26 corresponding to the second connection protrusions 16 (only one provided on one side of the fixing plate 4 is shown in FIG. 3). The first connection recesses 24 are provided at both ends of the fixing plate 4 and extend in the first direction, and the second connection recesses 26 are provided at intervals in the first direction and extend in the second direction. .

  The fixing plate 4 is mounted on the support protrusion 12 of the support base 2 so that the dowel pins 6 are inserted into the corresponding connecting holes 18. As a result, the dowel pins 6 are attached to the connecting holes 18 of the support base 2, and their tips protrude somewhat downward from the cylindrical protrusion 22. Further, the first connection recess 23 of the fixing plate 4 and the first connection protrusion 14 of the support base 2 are engaged, and the second connection recess 26 of the fixing plate 4 is the second connection of the support base 2. The fixing plate 4 is engaged with the projecting portion 16, and thus the fixing plate 4 is accurately and reliably positioned and attached to the support base 2.

  The tooth model 8 is fixed to the surface of the fixing plate 4 mounted on the support base 2 by using an adhesive or the like, and the tooth model 8 is fixed in this way, so that the surface becomes flat. For example, processing such as grinding is performed. And the predetermined site | part of the tooth model 8 is cut | disconnected in the state which fixed the tooth model 8 in this way. This cutting is performed from the tooth model 8 to the fixing plate 4, and by cutting in this way, the cut portion of the tooth model 8 can be taken out together with the fixing plate 4 and the dowel pins 6 with respect to the remaining part. .

  If the tooth model 8 is cut in a state where the fixing plate 4 is mounted on the support base 2, a part of the support base 2 may be cut during the cutting. When the support base 2 is recycled as will be described later, it is preferable to use the cutting base 32 shown in FIG. 4 because it becomes difficult to recycle several times if the support base 2 is damaged by cutting. The cutting base 32 may have the same shape as the support base 2, but is made of gypsum instead of synthetic resin.

  In FIG. 4, the illustrated cutting base 32 includes a base body 34, and a support protrusion 36 is integrally provided on the upper portion of the base body 34. A third connection projection 38 is provided corresponding to the first connection recess 24 of the plate 4, and a fourth connection projection 40 is provided corresponding to the second connection recess 26 of the fixing plate 4. Further, the cutting base 32 is provided with insertion holes corresponding to the dowel pins 6 provided on the fixing plate 4, and elongated tubes 42 made of a flexible material such as synthetic resin are attached to the insertion holes. ing.

  With this configuration, the fixing plate 4 to which the tooth model 8 is fixed is mounted on the support protrusion 36 of the cutting base 32 so that the dowel pin 6 is inserted into the corresponding tube 42. Thus, the dowel pin 6 is attached to the insertion hole of the cutting base 32 via the tube 42. A recess 44 is provided at the bottom of the base body 34 of the cutting base 32. In this mounted state, the tip of the inserted dowel pin 6 protrudes somewhat into the recess 44. Further, the first connection recess 23 of the fixing plate 4 and the third connection protrusion 38 of the cutting base 32 are engaged, and the second connection recess 26 of the fixing plate 4 is connected to the cutting base 32. The fixing plate 4 is engaged with the fourth connecting protrusion 40, and thus the fixing plate 4 is positioned and mounted accurately and reliably on the cutting base 32. Further, since the dowel pins 6 of the fixing plate 4 are mounted via the tube 42, even if the position of the dowel pins 6 is slightly shifted, it can be inserted as required, and a large number of fixing plates 4 can be cut. It can be applied as a cutting base for cutting.

  When the fixing plate 4 is mounted on the cutting base 32, the state shown in FIG. 5 is obtained. In such a mounted state, when cutting, for example, the central tooth portion 46 of the tooth model 8, the tooth model 8 is cut from the tooth plate 8 to the fixing plate 4 as shown by cutting lines 48 and 50. The portion 46 (a part of the fixing plate 4 and the central two dowel pins 6 are also integrated) can be removed independently from the other parts. When the cut tooth profile model 8 is used for the work, the fixing plate 4 to which the cut tooth model 8 is fixed is attached to the support base 2 again.

  Next, with reference to FIGS. 6-11, the manufacturing method of the working model mentioned above is demonstrated. In order to manufacture the working model, first, the support base 2 is manufactured by, for example, injection molding using a synthetic resin. Next, as shown in FIG. 6, the dowel pins 6 are inserted into the connection holes 18 of the support base 2 from the tip side (pin insertion step). When inserted, the base portion of the dowel pin 6 (the portion fixed to the fixing plate 4) protrudes upward from the support base 2. In order to strengthen the fixing of the fixing plate 4, for example, knurling is preferably performed on the protruding portion. If necessary, it is desirable to apply a release agent to the upper surface of the support base 2, that is, the upper surface of the support protrusion 12.

  Moreover, as shown in FIG. 7, the base frame member 52 is attached to the upper part of the support base 2 (frame mounting process). The base frame member 52 is formed of, for example, silicon rubber or the like, and is mounted so as to cover the upper part of the support base body 10 of the support base 2 and the outer peripheral surface of the support protrusion 12. An injection space 54 is defined by the upper surface of 2 and the inner peripheral surface of the base frame member 52. The base frame member 52 is formed by molding, for example. Note that the base frame member 52 may be attached after the dowel pin 6 is attached, but conversely, the dowel pin 6 may be attached after the base frame member 52 is attached.

  Next, as shown in FIG. 8, gypsum mud is injected into the injection space 54 defined in the base frame member 52 (plate forming step). The gypsum mud is injected until the upper end of the dowel pin 6 is completely immersed in the gypsum mud. Then, after the gypsum mud is hardened, the base frame member 52 is removed from the support base 2 and the hardened fixing plate 4 is detached from the support base 2 as shown in FIG. In this way, the fixed plate 4 corresponding to the support base 2 is manufactured.

  Thereafter, as shown in FIG. 10, the surface of the fixing plate 4 (the surface opposite to the surface from which the dowel pins 6 protrude) is subjected to, for example, grinding so as to be flat (processing step). This processing is performed, for example, in a state where the fixing plate 4 is mounted on the support base 2 as described above, for example, until the base end surface of the dowel pin 6 is exposed by grinding the portion indicated by the alternate long and short dash line 56. In this way, a working model is produced.

  When the work model is manufactured and shipped, as shown in FIG. 11, the fixing plate 4 manufactured as described above is mounted on the support base 2 and shipped in combination as described above. This can be performed in a state where the fixing plate 4 corresponding to each support base 2 is mounted, so that highly accurate work can be performed.

  When the work model manufactured in this way is used, as described above, the tooth model 8 is fixed to the surface of the fixing plate 4 with an adhesive in a state where the fixing plate 4 is mounted on the support base 2. (Model fixing process). Thereafter, the fixing plate 4 to which the tooth model 6 is fixed is attached to the cutting base 32, and a predetermined portion of the tooth model 8 is cut (cutting step). When the cut tooth profile model 8 is used for work, the cut fixing plate 4 is mounted on the support base 2 again.

  In the manufacturing method described above, the fixing plate 4 and the dowel pins 6 to which the tooth model 8 is fixed are discarded, but the support base 2 can be recycled. When recycling, the dowel pin 6 is inserted into the connection hole 18 of the support base 2 to be reused, and the fixing plate 4 is formed in the same manner as described above. Can be provided. Further, since cutting is performed using the cutting base 32 at the time of cutting, scratches at the time of cutting come to be attached to the cutting base 32, and as a result, the support base that is very unlikely to be damaged. 2 can be recycled many times. Note that the cutting base 32 is used by replacing it with a new one every 50 to 100 cutting operations, for example.

  As mentioned above, although the manufacturing method of the working model according to the present invention and the embodiment of the cutting base used for the same have been described, the present invention is not limited to these embodiments, and various types can be made without departing from the scope of the present invention. The deformation | transformation thru | or correction | amendment are possible.

  For example, in the above-described embodiment, the dowel pins 6 are provided in the central portion of the fixing plate 4 at intervals in the second direction. However, the present invention is not limited to such a configuration, and the form shown in FIG. Can be applied similarly. In FIG. 12, in this embodiment, the dowel pins 6 are provided in a row at intervals in the longitudinal direction (first direction) of the fixing plate 4A. Correspondingly, the support base 2A corresponds to the dowel pins 6. Thus, the connecting holes 18 are provided in a row. In this case, similarly to the support base 2A, the cutting base (not shown) is provided with insertion holes in a row at intervals in the longitudinal direction. The present invention can also be applied to a structure in which the dowel pins 6 are provided in two rows over the entire longitudinal direction.

  Further, the embodiment shown in FIG. 13 can be provided in the same manner. In FIG. 13, in this embodiment, the tooth model 8B handles the entire upper teeth (or the entire lower teeth) (so-called full mouth), and in this connection, the support base 2B is substantially arched. Correspondingly, the fixing plate 4B also extends in an arc shape in a substantially arcuate manner, and the dowel pins 6 are provided at intervals in the fixing plate 4B. Also in this case, similarly to the support base 2B, the cutting base (not shown) is also formed in a substantially bow shape, and the insertion holes are provided in a row at intervals in the cutting base.

The front view which shows the work model manufactured with the manufacturing method according to this invention. Sectional drawing which shows the work model of FIG. The perspective view which decomposes | disassembles and shows the work model of FIG. The perspective view which shows the base for cutting. Sectional drawing which shows the state which mounts | wears with the plate for fixation to the cutting base, and cuts a dental model. The figure which shows the state which mounted | wore the support base with the dowel pin. Sectional drawing which shows the state which mounted | wore the base frame member to the upper part of the support base. Sectional drawing which shows the state which injected the gypsum mud in the base frame member. Sectional drawing which shows the state which made the base frame member and the fixation plate detach | leave from the support base after gypsum hardened | cured. Sectional drawing which shows the state after processing the surface of the plate for fixation. Sectional drawing which shows the state which attached the plate for fixation to the support base. The perspective view which shows the other form of a work model. The perspective view which shows the further another form of a work model. The perspective view which decomposes | disassembles and shows the conventional work model.

Explanation of symbols

2, 2A, 2B Support base 4, 4A, 4B Fixing plate 6 Dowel pin 8, 8B Tooth model 10, 10A, 10B Support base body 12, 12A, 12B Support projection 18 Connection hole 32 Cutting base 34 Base Base body 42 Tube 52 Base frame member

Claims (4)

A manufacturing method for reusing a support base in a work model comprising a support base formed from a synthetic resin, a fixing plate to which a tooth model is fixed, and a dowel pin implanted in the fixing plate. Because
A pin inserting step of inserting the dowel pin into the connection hole of the support base; a frame mounting step of mounting a base frame member on the upper portion of the support base; and an injection defined by the support base and the base frame member A working model comprising: a plate forming step for forming the fixing plate by injecting gypsum into the space; and a processing step for processing the surface of the formed fixing plate to be flat. Production method.   A model fixing step of fixing the tooth model on the surface of the fixing plate; and a cutting step of cutting the tooth model and the fixing plate. In the cutting step, a cutting base formed from gypsum A base is used, and the cutting base is provided with an insertion hole corresponding to the dowel pin implanted in the fixing plate, and the dowel pin of the fixing plate to which the tooth model is fixed is cut. The work model manufacturing method according to claim 1, wherein the work model is inserted into the insertion hole of the work base.   The work model manufacturing method according to claim 1, wherein the support base is repeatedly used, and the dowel pins are inserted into the connection holes of the support substrate to be reused in the pin insertion step. . A cutting base for use in cutting a fixing plate to which a tooth model is fixed, comprising a base main body formed of gypsum, and the dowel pin implanted in the fixing plate in the base main body An insertion hole is provided correspondingly, a tube is mounted in the insertion hole, and the dowel pin implanted in the fixing plate is inserted into the tube mounted in the insertion hole. Cutting base.

Images