WO2000054698A1 - Procede de coulee de protheses a base metallique, procede de production de moules de coulee utilises dans le procede de coulee, moule de coulee et prothese a base metallique - Google Patents

Procede de coulee de protheses a base metallique, procede de production de moules de coulee utilises dans le procede de coulee, moule de coulee et prothese a base metallique Download PDF

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Publication number
WO2000054698A1
WO2000054698A1 PCT/JP1999/006015 JP9906015W WO0054698A1 WO 2000054698 A1 WO2000054698 A1 WO 2000054698A1 JP 9906015 W JP9906015 W JP 9906015W WO 0054698 A1 WO0054698 A1 WO 0054698A1
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WO
WIPO (PCT)
Prior art keywords
model
mold
shape
patient
upper jaw
Prior art date
Application number
PCT/JP1999/006015
Other languages
English (en)
Japanese (ja)
Inventor
Shiro Okamoto
Original Assignee
Casting Okamoto Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Casting Okamoto Co., Ltd. filed Critical Casting Okamoto Co., Ltd.
Publication of WO2000054698A1 publication Critical patent/WO2000054698A1/fr
Priority to US09/712,233 priority Critical patent/US6705866B1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
    • A61C13/04—Palates or other bases or supports for the artificial teeth; Making same made by casting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/20—Methods or devices for soldering, casting, moulding or melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/005—Adjustable, sectional, expandable or flexible patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings

Definitions

  • the present invention relates generally to metal dentures, and more particularly, to a method of manufacturing the same.
  • the present invention also relates to a method of manufacturing a metal mold denture mold and a mold formed by the method.
  • the present invention further relates to a metal denture that can provide a stable wearing feeling when worn. Background art
  • Gold is a traditional material, T i alloy of platinum, C 0 - CI: Among the transition of dental material to biocompatibility excellent metal such as an alloy, precision ⁇ method, already established and Los Towakkusu method Metal dentures using technology have been put into practical use (“Dental Technology Clinical Training Course 5”, pp. 121-162, published by Medical and Dental Medicine Publishing Co., Ltd.).
  • the method of making this metal floor denture is, as a general rule, to prepare a positive model that is a model of the patient's upper jaw, and apply the shape (positive surface) of this positive model to the impression of plaster, agar, silicon, etc.
  • the imprint material is transferred using the imprint material, and then the impression material after the transfer is used to make a mold.
  • the structure that is, the mucosal surface of the upper metal floor has fine irregularities that transfer the properties of the patient's mucosal tissue.
  • the structure is inevitable. Since the surface of the mold becomes a rough uneven surface, the surface of the upper jaw metal floor to be made is rougher due to the generation of air bubbles during the manufacturing. This includes the problem that it takes time and effort to finish polishing because it easily becomes skin.
  • the overall contour of the shape surface obtained by the impression material faithfully follows that of the positive model, but the surface texture reflects the smooth surface of the flexible thin film.
  • the sculpture (fireproof model) made from the shape surface transferred by the impression material should have a smooth surface property due to the surface of the flexible thin film without being affected by the state of the mucosal tissue of the patient. Therefore, there is an advantage that the problem of bubbles and nests during manufacturing can be reduced, and the efficiency of finish polishing work can be improved and the incidence of defective products can be significantly reduced. Disclosure of the invention
  • the inventor of the present invention has obtained excellent results by the above-described novel method, and has further studied the development of this method. As a result, the present inventors have devised the present invention.
  • An object of the present invention is to provide a method of manufacturing a metal denture which can give a stable wearing feeling when worn.
  • Another object of the present invention is to provide a metal denture which can give a stable wearing feeling when worn.
  • the metal denture of the present invention has a surface on the mucous membrane side in contact with the mucous membrane of the upper jaw of a patient, and a relatively large uneven pattern is formed on the mucosal surface.
  • the metal denture or the mold for this metal denture is the metal denture or the mold for this metal denture.
  • the above-mentioned model having the upper jaw surface shape of the patient is typically an explicit model which is a model of the upper jaw of the patient.
  • the transfer material may be a conventionally known impression material made of gypsum, agar, silicon, or the like, but is preferably gypsum.
  • the pattern of the concavo-convex pattern can be produced, for example, by cutting a commercially available net material into an appropriate size and bonding the cut material to the shape surface of the model.
  • the pattern of the concavo-convex pattern may be formed by applying wax to the shape surface of the model.
  • the type of uneven pattern is Yo Le be performed by adhering a plurality of thin strips on the shaped surface of the model, 3
  • FIG. 1 is a perspective view of an example of a metal denture according to the present invention.
  • FIG. 2 is a perspective view of another example of the metal denture according to the present invention.
  • FIG. 3 is an explanatory diagram of a process of making an impression model from a positive model to make a metal denture according to the present invention.
  • FIG. 4 is an explanatory diagram showing an example of a specific method of forming a mold on the shape surface of the positive model in order to form a concavo-convex pattern on the mucosal surface of the metal denture according to the present invention.
  • FIG. 5 is an explanatory view showing another example of a specific method for forming a mold on the shape surface of the positive model in order to form an uneven pattern on the mucosal side surface of the metal denture according to the present invention.
  • FIG. 6 is an explanatory view showing another example of a specific method of forming a mold on the shape surface of the positive model in order to form a concavo-convex pattern on the mucosal side surface of the metal denture according to the present invention.
  • FIG. 7 is a schematic sectional view of an apparatus suitable for producing a negative model for producing a metal denture according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • the metal denture 1 and 2 illustrate a metal denture according to the present invention.
  • the metal denture 1 is not particularly limited, but it is preferable to select a metal having excellent biocompatibility, such as a Ti alloy or a Co—Cr alloy.
  • the metal denture 1 has a surface 2 on the mucous membrane side in contact with the mucous membrane (not shown) of the upper jaw, and an uneven pattern 3 is formed on the mucosal surface 2.
  • the surface 2 including the concavo-convex pattern 3 has a smooth surface texture without fine irregularities to which the mucosal tissue of the patient is transferred.
  • the concavo-convex pattern 3 may be formed by a plurality of circular recesses 4 separated from each other as shown in FIG. 1 or may be formed by a continuous groove 5 extending in a net shape as shown in FIG. May be combined. Such concavo-convex pattern 3 may be arranged on almost the entire area of the surface 2 of the metal denture, may be arranged only on one side area, or may be formed only on the local area. In any case, the shape of the recesses 4 and 5 for forming the concavo-convex pattern 3 and the shape of the land 6 formed thereby are not particularly limited. Unlike the fine irregularities that transfer the mucosal tissue, the recesses 4 and 5 have a size and depth that can be seen at a glance. All of the elements that characterize the concavo-convex pattern 3, such as the arrangement position of the concavo-convex pattern 3 and the shapes and sizes of the recesses 4 and 5, may be determined according to the needs of the patient, if necessary.
  • a typical method of making the metal denture 1 according to the present invention is basically based on a positive model, which is a model of a patient's upper jaw, according to a conventionally known precision metal manufacturing method.
  • This mold is used to make a sculpture by transferring the shape surface (positive surface).
  • a conventionally known impression material such as gypsum, agar, or silicon. it can.
  • the method of manufacturing the metal denture 1 according to the present invention is characterized by a step of transferring the surface shape, such as a step of taking the shape of the positive model using an impression material or a step of making a mold from the impression material.
  • a description will be given based on a typical method of making a metal denture, and illustrates a case where a method according to the present invention is added to a step of collecting the surface shape of a positive model using an impression material. It is.
  • the method according to the present invention can be added to the step of collecting the surface shape of the positive model using an impression material. This is preferred because the sulcus is adapted to the upper jaw of the patient.
  • FIG. 3 is an explanatory diagram of a process of collecting the shape surface of the positive model using an impression material.
  • a positive model 10 corresponding to the patient's upper jaw is prepared (procedure: a), and a concave / convex pattern 3 mold 11 is provided on the surface 10a of the positive model 10 (procedure: mouth). ).
  • the pattern 11 of the uneven pattern 3 will be described later.
  • the shape surface 11a of the positive model 10 provided with the concavo-convex pattern 11 is covered with a flexible thin film 12 (procedure: C).
  • a vacuum is applied between the mold 10 and the two 10 and 12 are brought into close contact (procedure: 2).
  • the flexible thin film 1 After setting to 0, pour impression material 13 onto it and transfer it (Procedure: E).
  • the impression model ie, the negative type model, made through the procedure of (i) to (e) is used to make a fireproof model which is a structure type of a metal denture. Since a method known in the art can be used for making the refractory model, its description is omitted.
  • the mold 11 of the concavo-convex pattern 3 will be described with reference to FIGS. 4 to 6 .
  • the mold 11 for example, a vinyl tape coated with an adhesive on one side is cut into a circle to form By making a circular thin piece 15 of this shape, and attaching this circular piece 16 to the shape surface 10a of the positive model 10 at an appropriate distance, the uneven pattern shown in Fig. 4)
  • a mold for making 1 can be made.
  • a net 16 made by cutting a commercially available net made of synthetic resin fibers into an appropriate shape was prepared, and this net 16 was used as the surface 1 of the positive model 10.
  • a mold 11 for forming a concavo-convex pattern (a continuous groove 5 extending in a net shape) as shown in FIG.
  • wax 17 may be applied to the shape surface 10a of the positive model 10 to form a mold 11 having an appropriate shape.
  • the pattern 11 of the concave-convex pattern 3 can be formed by a suitable raised portion artificially and intentionally provided on the shape surface 10a of the positive model 10.
  • the mold 11 may be arranged in almost the entire area of the shape surface 10 a of the positive model, It may be arranged only in the local area, or may be arranged only in the local area. Also, a net 16 may be arranged in a partial area of the shape surface 10a, and a wax 11 may be applied to another area, for example, to form the mold 11.
  • the size of the land portion 6 of the uneven pattern 3 formed on the surface 2 of the metal denture is determined by the size of the mesh of the net 16.
  • the land 6 actually has a slightly tapered projection shape.
  • Japanese Patent Application No. 7-311592 The device proposed by the present invention in Kaihei 9 155 5 0 5) is optimal, so the disclosure of this patent application is incorporated herein, but the outline of this device is described below with reference to FIG. I do.
  • the device 20 has a container 21 opened upward.
  • this container 21 there are provided a ventilation partition plate 22 and a number of small-diameter particles 23 placed on the plate 22, and at the bottom of the container 21,
  • a port 24 is formed to communicate with a vacuum source (not shown) such as a vacuum pump.
  • a vacuum source such as a vacuum pump.
  • a flexible thin film 12 covers the positive model 10 and small particles 23 around it.
  • a ring member 25 is set on the outer peripheral portion of the flexible thin film 12, and the flexible thin film 12 is fixed between the ring member 25 and the container 21.
  • a vacuum is drawn through the port 24 to evacuate the air between the flexible thin film 12 and the positive model 10, and the flexible thin film 12 is brought into close contact with the positive model 10.
  • An impression material 13 such as gypsum / silicone is poured onto the flexible thin film 12.
  • the metal denture 1 has an overall shape adapted to the upper jaw of the patient, but its mucosal surface 2 is affected by the condition of the mucosal tissue of the patient.
  • the flexible thin film 1 2 provides a smooth surface texture, which can reduce the problems of bubbles and nests during fabrication, improve the work efficiency of finish polishing work, and reduce the incidence of defective products. Significant reductions can be achieved.
  • the uneven surface 3 formed on the mucosal surface 2 of the metal denture 1 Since the substantial surface area of the denture is increased, the contact area with the patient's maxillary mucosa can be increased when the patient wears the metal denture 1, for example, stable mounting of the metal denture 1 It can give the patient a feeling of sensation and, when eating something, can give the appropriate stimulation to the mucous membrane of the maxilla. In order to make this irritation to the mucous membrane particularly intentional, the land portion 6 formed by the uneven pattern 3 is preferably formed into a slightly tapered projection shape.
  • the impression model When fabricating a metal denture according to a typical method of manufacturing a metal denture, during the process of making a refractory model ( ⁇ molding) from an impression model, the impression model should be provided with a three-dimensional pattern 3 1 1 on the impression model. You may.
  • the present invention is applied to the present invention from a metal mold by adopting the mold method described in Japanese Patent Application No. 7-315215 (Japanese Patent Application Laid-Open No. Hei 9-55505) described above. If a metal denture according to (1) is to be made, in the process of making a metal mold from the positive model, the pattern 11 of the uneven pattern 3 may be provided on the model from which the surface shape is to be transferred. Industrial applicability
  • the metal denture according to the present invention has an overall shape conforming to the upper jaw of the patient, but the mucosal surface thereof is different from the state of the mucosal tissue of the patient. Since the flexible thin film provides a smooth surface without being affected, the problem of bubbles and nests during manufacturing can be reduced, improving the work efficiency of finish polishing and generating defective products. A significant reduction in the rate can be achieved.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne une prothèse (1) à base métallique présentant une surface (2) du côté muqueuse, laquelle est en contact avec la muqueuse de la mâchoire supérieure du patient et sur laquelle est formé un motif irrégulier (3). La surface (2) présentant le motif irrégulier (3) présente une propriété de surface lisse non affectée par le tissu de la muqueuse du patient.
PCT/JP1999/006015 1999-03-18 1999-10-29 Procede de coulee de protheses a base metallique, procede de production de moules de coulee utilises dans le procede de coulee, moule de coulee et prothese a base metallique WO2000054698A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/712,233 US6705866B1 (en) 1999-03-18 2000-11-15 Denture having uneven patterns on a mucosa-fronted surface thereof and its manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7282599 1999-03-18
JP11/72825 1999-03-18

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/712,233 Continuation-In-Part US6705866B1 (en) 1999-03-18 2000-11-15 Denture having uneven patterns on a mucosa-fronted surface thereof and its manufacturing method

Publications (1)

Publication Number Publication Date
WO2000054698A1 true WO2000054698A1 (fr) 2000-09-21

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PCT/JP1999/006015 WO2000054698A1 (fr) 1999-03-18 1999-10-29 Procede de coulee de protheses a base metallique, procede de production de moules de coulee utilises dans le procede de coulee, moule de coulee et prothese a base metallique

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705866B1 (en) * 1999-03-18 2004-03-16 Casting Okamoto Co., Ltd. Denture having uneven patterns on a mucosa-fronted surface thereof and its manufacturing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002828A1 (fr) * 1981-02-23 1982-09-02 Kawahara Haruki Dents artificielles a base metallique poreuse et procede de fabrication
JPS6066740A (ja) * 1983-09-22 1985-04-16 原　芳秋 有床義歯
JPH05177297A (ja) * 1992-01-08 1993-07-20 Canon Inc 鋳型および鋳造方法
JPH09155505A (ja) * 1995-12-04 1997-06-17 Casting Okamoto:Kk 金属製鋳型
JPH10201773A (ja) * 1997-01-20 1998-08-04 Kenichi Sakamoto 総義歯における上顎総義歯の床の自然な舌ざわりと食べ物のくっつき防止 並びにより自然な発音を促す為の違和感の解消及び下顎総義歯の離脱防止 とその製造方法。

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002828A1 (fr) * 1981-02-23 1982-09-02 Kawahara Haruki Dents artificielles a base metallique poreuse et procede de fabrication
JPS6066740A (ja) * 1983-09-22 1985-04-16 原　芳秋 有床義歯
JPH05177297A (ja) * 1992-01-08 1993-07-20 Canon Inc 鋳型および鋳造方法
JPH09155505A (ja) * 1995-12-04 1997-06-17 Casting Okamoto:Kk 金属製鋳型
JPH10201773A (ja) * 1997-01-20 1998-08-04 Kenichi Sakamoto 総義歯における上顎総義歯の床の自然な舌ざわりと食べ物のくっつき防止 並びにより自然な発音を促す為の違和感の解消及び下顎総義歯の離脱防止 とその製造方法。

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705866B1 (en) * 1999-03-18 2004-03-16 Casting Okamoto Co., Ltd. Denture having uneven patterns on a mucosa-fronted surface thereof and its manufacturing method

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