WO2015059761A1 - Pilier dentaire et matière de résine dentaire - Google Patents

Pilier dentaire et matière de résine dentaire Download PDF

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Publication number
WO2015059761A1
WO2015059761A1 PCT/JP2013/078530 JP2013078530W WO2015059761A1 WO 2015059761 A1 WO2015059761 A1 WO 2015059761A1 JP 2013078530 W JP2013078530 W JP 2013078530W WO 2015059761 A1 WO2015059761 A1 WO 2015059761A1
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WIPO (PCT)
Prior art keywords
weight
dental
dental abutment
root canal
resin
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PCT/JP2013/078530
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English (en)
Japanese (ja)
Inventor
浩史 安藤
Original Assignee
株式会社ユニックスジャパン
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Priority to PCT/JP2013/078530 priority Critical patent/WO2015059761A1/fr
Publication of WO2015059761A1 publication Critical patent/WO2015059761A1/fr

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    • 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
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/30—Fastening of peg-teeth in the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns

Definitions

  • the present invention relates to a dental abutment and a dental resin material.
  • Patent Document 1 discloses a method of repairing a prosthesis by covering a coronal prosthesis.
  • the material constituting the abutment is not disclosed. Therefore, if the abutment is made of conventional metal, the metal component may melt and cause metal allergy. Further, if it is made of metal, it lacks elasticity, and it becomes difficult to insert the abutment to the depth of the root canal, and the abutment is broken when it is forcibly inserted into the root canal while the fixing strength of the abutment is insufficient. Furthermore, there is a possibility that teeth (for example, portions other than the abutment) may be broken (broken) by long-term use of the abutment.
  • An object of the present invention is to provide a dental abutment and a dental resin material that are less likely to cause allergies, have elasticity, increase the strength of fixing to the root canal, and are less likely to be damaged even when used for a long period of time. It is to provide.
  • the dental abutment of the present invention is formed continuously from an insertion fixing part that is inserted into and fixed to the root canal of the remaining natural tooth, and from the insertion fixing part so as to protrude from the opening of the root canal to the crown side.
  • a support part that supports the artificial tooth part, and the insertion fixing part and the support part are formed of an integrally molded product of a resin having a polyolefin resin as a main component of 50% by weight or more.
  • the dental resin material of the present invention is a resin material used for producing a dental abutment used in the oral cavity, and is 65 to 90% by weight of polypropylene and 7 to 7% of polyethylene or ethylene ⁇ -olefin copolymer.
  • the dental resin material of the present invention is a resin material used for producing a dental abutment used in the oral cavity, comprising 75 to 85% by weight of polypropylene, polyethylene or ethylene ⁇ -olefin copolymer. 15 to 20% by weight, magnesium stearate 0.03 to 0.5% by weight, one or both of titanium oxide and iron oxide 0.003 to 0.1% by weight, and pigment 0.001 to 0.1% by weight % Of copolymer polypropylene resin material as a main component. Accordingly, a dental abutment having a low possibility of allergy, moderate hardness, and being less likely to break is realized by the characteristics of polypropylene with an appropriate blending ratio and the like. In the above, the hardness may mean having a minute elasticity.
  • FIG. 1B is a schematic cross-sectional view showing a state in which the dental pulp of the first premolar of FIG. 1A is excised and the pulp is removed.
  • 1 is a schematic perspective view showing an example of a dental abutment of Example 1.
  • FIG. The model perspective view which shows an example of an artificial tooth.
  • the model perspective view which shows the state which turned the artificial tooth of FIG. 3A upside down.
  • the model perspective view which shows the state which inserted the dental abutment of FIG. 2 in the hole part of the artificial tooth of FIG. 3A.
  • 4A is a schematic bottom view showing the magnitude relationship between the size of the hole portion of the artificial tooth and the support portion of the dental abutment (the insertion fixing portion of the dental abutment is omitted).
  • 4A is a schematic cross-sectional view showing the magnitude relationship between the depth of the hole portion of the artificial tooth and the height of the support portion of the dental abutment in the state of FIG. 4A.
  • the schematic cross section which shows the scene which filled the root canal of FIG. 1B with the apical filler.
  • FIG. 5B is a schematic cross-sectional view showing a scene where the dental abutment (first) of FIG. 2 is inserted into one root canal of FIG. 5A.
  • FIG. 5B is a schematic cross-sectional view showing a scene where the dental abutment (second) in FIG. 2 is inserted into the other root canal following FIG. 5B.
  • FIG. 5C is a schematic cross-sectional view showing a scene in which an artificial tooth having a hole filled with an ultraviolet curable resin is mounted on a dental abutment, following FIG. 5C.
  • FIG. 5D is a schematic cross-sectional view showing a scene in which the ultraviolet curable resin is cured by irradiating ultraviolet rays after FIG. 5D.
  • FIG. 5E is a schematic cross-sectional view showing a scene in which the dental abutment and the artificial tooth integrated with the cured ultraviolet curing resin are separated from the patient's root canal, following FIG. 5E.
  • FIG. 5C is a schematic cross-sectional view showing a scene in which the dental abutment and the artificial tooth integrated with the cured ultraviolet curing resin are separated from the patient's root canal, following FIG. 5E.
  • FIG. 5F is a schematic cross-sectional view showing a scene in which dental cement is applied to the insertion fixing portion of the separated dental abutment and the patient's root canal and the root canal and the dental abutment are joined together, following FIG. 5F.
  • the model perspective view which shows the scene which filled the hole part of the artificial tooth of FIG. 3B with the ultraviolet curing resin.
  • the model perspective view which shows the scene which injected the dental cement into the artificial tooth of FIG. 5F.
  • FIG. 3 is a schematic cross-sectional view showing a state where a root canal is prosthetic-restored using the dental abutment of FIG. 2.
  • FIG. 3 is a schematic cross-sectional view showing a state in which a root canal has three prosthetic restorations using the dental abutment of FIG. 2.
  • the model perspective view which shows the modification 1 of the dental abutment of FIG.
  • the model perspective view which shows the modification 2 of the dental abutment of FIG.
  • the model perspective view which shows the modification 3 of the dental abutment of FIG.
  • the model perspective view which shows the modification 4 of the dental abutment of FIG.
  • the schematic cross section which shows the state which carried out the prosthetic restoration of the tooth
  • FIG. 6 is a schematic perspective view showing an example of a dental abutment of Example 2.
  • FIG. 6 is a schematic perspective view showing an example of a dental abutment of Example 2.
  • FIG. 10B is a schematic cross-sectional view showing a state where a tooth is prosthetic-restored using the dental abutment of FIG. 10A.
  • FIG. 10B is a schematic perspective view showing Modification 1 of the dental abutment of FIG. 10A.
  • FIG. 11B is a schematic cross-sectional view showing a state where a tooth is prosthetic-restored using the dental abutment of FIG. 11A.
  • FIG. 10B is a schematic perspective view showing Modification 2 of the dental abutment of FIG. 10A.
  • the schematic cross section which shows the state which carried out the prosthetic restoration of the tooth
  • the crown portion 1 when the crown portion 1 is largely lost and it is difficult to cover the missing tooth with a covering or the like, the crown portion 1 is excised and the pulp 2b is removed from the root canal 2a of the root portion 2. After removal (FIG. 1B), the base of the artificial tooth is fixed (built) to the root canal 2a, and the base is covered with the artificial tooth to restore the prosthesis.
  • the dental abutment 3 (FIG. 2) is inserted and fixed to the root canal 2a and becomes the base of the artificial tooth.
  • the dental abutment 3 is inserted into the root canal 2a (FIG. 1B) of the natural tooth remaining in the patient and fixed to the crown side from the opening 2c of the root canal 2a. It is formed continuously from the insertion fixing part 3a so as to protrude, and is integrally provided with a support part 3b that supports the crown part (prosthetic body, artificial tooth).
  • the dental abutment 3 is, for example, from the upper end (base end) It is formed in a tapered cylindrical shape whose diameter gradually decreases toward the tip (the outer diameter is set to fall within the range of 0.5 to 3 mm).
  • the insertion fixing part 3a is a part attached to the root canal 2a, and the support part 3b is a part protruding from the opening 2b of the root canal 2a toward the crown.
  • the insertion portion 3a and the support portion 3b are integrally formed of a resin whose main component is a polyolefin resin. Preferably, it is integrally molded with a resin mainly composed of polypropylene.
  • the “main component” refers to a component having a content of 50% by weight or more.
  • the insertion fixing part 3a and the support part 3b have a weight ratio of 80% polypropylene as a main component, and polypropylene purified by copolymerizing 18% ethylene ⁇ -olefin copolymer. It is.
  • This polypropylene has a weight ratio of 80% polypropylene homopolymer [CH2-CH (CH3)] m and 18% ethylene propylene copolymer [CH2-CH (CH3)] m- [CH2-CH2] n as an ethylene ⁇ -olefin copolymer.
  • pigment for example, legal pigments such as aluminum lake or bengara, organic and inorganic pigments, etc.
  • select and blend a plurality of pigments and adjust to 0.03%.
  • iron oxide may be blended instead of titanium oxide, or the total amount of titanium oxide and iron oxide may be 0.03%.
  • an ethylene butene 1 copolymer may be used as the ethylene ⁇ -olefin copolymer, and further, 18% polyethylene may be contained instead of the ethylene ⁇ -olefin copolymer.
  • substances other than those mentioned above are added as inevitable impurities within a range of 2% by weight or less, as additives for a predetermined purpose of addition, or as a sum of inevitable impurities and a predetermined additive.
  • the propylene homopolymer, ethylene propylene copolymer, magnesium stearate, titanium oxide (iron oxide), and pigment are mixed and copolymerized, and purified to become a material for the dental abutment 3 by purification. A material is obtained.
  • the dental abutment 3 is composed of a ready-made product uniformly formed by a mold. Specifically, the pellet-shaped resin material of the dental abutment 3 is placed in the barrel of a general-purpose resin molding machine, and the furnace temperature is set to 180 ° C. to 230 ° C. to be softened and melted to obtain the shape of the dental abutment 3 The dental abutment 3 is completed by injection-molding the molded mold and polymerizing and curing it.
  • the artificial tooth attached to the dental abutment 3 is formed corresponding to a location (tooth) where the dental abutment 3 is built.
  • the artificial tooth is formed as the first premolar artificial tooth 4 corresponding to the lower first premolar tooth T1 (FIG. 1A) (FIGS. 3A and 3B).
  • a concave hole 4c is formed from the facing surface 4b facing the occlusal surface 4a of the first premolar artificial tooth 4 toward the inside of the artificial tooth.
  • Artificial teeth are commercially available off-the-shelf products such as ceramics, zirconia, polyetheretherketone resin (PEEK resin), and acrylic. From the viewpoint of strength and durability, hard resin teeth, ceramic-coated hard resin teeth, etc. Yes, the inner surface thereof is shaved to form the hole 4c. Further, as a product other than the ready-made product, a product using a dental CAD / CAM system, or a prosthesis or bridge manufactured artificially may be used.
  • the support portion 3b of the dental abutment 3 is inserted into the hole 4c.
  • the insertion fixing portion 3a is omitted
  • the outer edge of the hole portion 4c is set larger than the support portion 3b so as to surround the outer edge of the support portion 3b.
  • the depth of the hole 4c is set so that the entire support 3b is accommodated inside. Note that there is a gap between the hole 4c and the support 3b in a state where the support 3b is simply inserted into the hole 4c.
  • the gap between the hole 4c and the support 3b is filled with inclusions.
  • the inclusion is a clay-like ultraviolet curing resin 5 interposed between the first premolar artificial tooth 4 and the support portion 3b (FIG. 4C), and is polymerized and cured by irradiation with ultraviolet rays.
  • the prosthetic restoration using the dental abutment 3 and the first premolar artificial tooth 4 is performed.
  • An example will be described.
  • the dentist cuts out the unnecessary crown portion 1 of the first premolar tooth T1, appropriately shapes the upper surface 2e of the root portion 2 so that the artificial tooth can be placed, and then extracts the pulp 2b from the root canal 2a.
  • root canal filling material 6 (FIG. 5A) is filled into the hollow root canal 2 after cleaning and disinfection. Thereby, the apex 2d is sealed.
  • the material and filling method of the root canal filling material 6 may be the same as conventional ones.
  • the upper part of the root canal 2a is excised if unnecessary.
  • the shape of the root canal 2a without the root canal filling material 6 is adjusted to a shape suitable for inserting the insertion fixing portion 3a of the dental abutment 3 prepared in advance. For example, what is necessary is just to cut the wall part of the root canal 2a with a dental instrument so that the root canal 2a may be expanded or a shape may approximate a cylindrical shape.
  • the dental abutment 3 is prepared according to the number of root canals 2a of the tooth to be treated.
  • the first premolar tooth T1 two root canals 2a
  • two dental abutments 3 are prepared.
  • the insertion fixing part 3a of the prepared first dental abutment 3 is inserted into one root canal 2a of the first premolar tooth T1 and is planted (attached) (not attached at this time).
  • the insertion fixing part 3a is softened by heat to shape the shape, or after being cut (cut) and inserted into the root canal 2a, it is shown in FIG. 5B.
  • the support part 3b is located so as to protrude outward from the opening 2c of the root canal 2a in a rod shape.
  • another dental abutment 3 is planted in the other root canal 2a of the first premolar tooth T1 (FIG. 5C).
  • a gap is exaggeratedly drawn between the insertion fixing portion 3a and the root canal 2a to show that the insertion fixing portion 3a is not attached to the root canal 2a.
  • a first premolar artificial tooth 4 (FIGS. 3A and 3B) corresponding to the first premolar tooth T1 to be treated is prepared, and an upper surface 2e of the root part 2 is prepared.
  • the facing surface 4b of the first premolar artificial tooth 4 is appropriately scraped and adjusted so that the facing surface 4b of the first premolar artificial tooth 4 is aligned with the upper surface 2e of the root portion 2 (of the first premolar artificial tooth 4).
  • the facing surface 4b is placed on the upper surface 2d of the tooth root portion 2, the gap between the facing surface 4b and the upper surface 2e is adjusted as small as possible).
  • the clay-like ultraviolet curing resin 5 is pushed into the hole 4c of the first premolar artificial tooth 4 with a spatula or the like (FIG. 6A).
  • the first premolar artificial tooth 4 is covered so as to cover the support 3 b (FIG. 5C) of the dental abutment 3, and the first premolar artificial tooth 4 on the dental abutment 3 is covered. The position is adjusted (FIG. 5D).
  • the ultraviolet curing resin 5 (FIG. 4C) filled in the gap between the support portion 3b and the hole portion 4c is irradiated with ultraviolet rays by a light irradiator. Is cured.
  • the ultraviolet curable resin 5 is polymerized, cured, and contracted by the irradiation of the ultraviolet rays, and the dental abutment 3 and the first premolar artificial tooth 4 are integrated (FIG. 5E).
  • the dental abutment 3 and the first premolar artificial tooth 4 are integrated, the dental abutment 3 inserted into the root canal 2a is removed together with the first premolar artificial tooth 4, and the ultraviolet light becomes an extra burr by hardening.
  • the cured resin 5 (cured resin) is removed (FIG. 5F).
  • the dental canal 7 capable of obtaining an image reaction is applied to the root canal 2a and the insertion fixing part 3a, and the insertion fixing part 3a is bonded to the root canal 2a to repair the first premolar tooth T1. Is completed (FIG. 5G).
  • the dental abutment 3 is formed integrally with a resin mainly composed of polypropylene, so that even if a curved surface or a bent portion exists in the patient's shaped root canal 2a, the dental abutment 3 is flexible. Since it is a raw material, the insertion fixing portion 3a can be reliably inserted up to the apex 2d (shaping tip) of the root canal 2a. For this reason, it is possible to mount the dental abutment 3 that is uniformly formed on each patient, and it is not necessary to collect an impression for forming the dental abutment 3.
  • the artificial tooth can be attached to the dental abutment 3 by forming the hole 4c in the ready-made artificial tooth after the dental abutment 3 is attached to the patient, the impression in the patient's mouth is collected once.
  • the treatment is completed without Accordingly, it is possible to provide the dental abutment 3 with less burden on the patient than in the prior art and for completing the treatment in a short time.
  • an impression may be collected as usual and a prosthetic body dedicated to the patient may be formed.
  • the dental abutment 3 is blended with magnesium stearate as an additive, the resin agitation is high, and the dental abutment 3 is heated to the details of the patient's root canal 2a. It becomes possible to attach, and the insertion fixing part 3a is easily adapted to the root canal 2a of the patient.
  • the dental abutment 3 is mounted on the root canal 2a with the dental cement 7 capable of obtaining an image shadow reaction, there is no problem even if the dental abutment 3 mainly composed of polypropylene is not imaged. .
  • the abutment is made of metal (conventional product), it is difficult to remove due to high rigidity, but if it is a dental abutment 3 mainly composed of polypropylene It can be easily removed by being rich in elasticity, reducing the burden on the patient.
  • the dental abutment 3 has 80% polypropylene as a main component in weight ratio, and has the advantages and characteristics that are extremely advantageous compared with the conventional products as listed below by adjusting the above-mentioned resin and the like. Yes.
  • the resin component of the dental abutment 3 is highly safe because there is no elution in the oral cavity, and there is no worry about the additives and pigments in terms of safety (the dental abutment 3
  • the melting point of the resin material is, for example, about 180 ° C.).
  • the tooth color can be reproduced on the dental abutment 3 and the aesthetics can be improved (the resin is made by adding a dye to the same color as the tooth color). Possible). 4). By blending magnesium stearate as an additive, all the pigments are evenly mixed at the time of resin dyeing, and the dyeability is greatly enhanced. 5. By blending titanium oxide (iron oxide) as an additive, it is possible to reproduce a natural hue close to natural teeth. 6).
  • the dental abutment 3 of the present invention is excellent in mechanical strength, bending strength, and heat resistance.
  • the resin material of the dental abutment 3 is generally in the form of pellets, but is not limited to this, and may be in the form of a sheet, a block, or the like.
  • the dental abutment 3 was superior to the abutments formed of other dental resin materials.
  • the polycarbonate was folded 5 times, the polyethylene terephthalate (PET) + polyethylene composite resin was cracked 14 times and 38 times, and the polyamide was broken 47 times and 129 times.
  • PET polyethylene terephthalate
  • the bent portion only became white, and no tears or breakage occurred even after bending 200 times.
  • the polycarbonate was folded at 6 times, the PET + polyethylene was broken at 12 times, and was broken at 51 times, and the polyamide was broken at 53 times and broken at 118 times. Then, the bent part only became white, and there was no tear at 200 times. Also, the bending strength was 61.2 MPa, the elongation was 12 mm or more, the water absorption rate was 0.13% by weight, and the dissolution rate was 0.1% by weight, and very good values were obtained. In addition, good results were obtained as shown in the attached experimental results for workability and coloring.
  • the “colored ⁇ E curry” in the second row from the bottom of Table 1 means that a resin piece as a sample is immersed in hot water in which curry powder is dissolved at 37 ° C. for 1 week, and then the sample. The resin piece was taken out and inspected how much it was colored by the curry powder solution with a dedicated testing machine, and the inspection result was quantified. The smaller the value, the lower the degree of coloring, in other words, discoloration Means less.
  • “colored ⁇ E fuchsin” is obtained by performing the same inspection using fuchsin as a colorant instead of curry powder, and means that the smaller the inspection value, the less the color change.
  • test value of “colored ⁇ E curry” in the present invention is 1.29
  • test value of “colored ⁇ E fuchsin” is 5.19
  • the resin material of the dental abutment 3 is manufactured and adjusted to a plate material having a size of 20 mm ⁇ 20 mm ⁇ 3 mm by injection molding, immersed in boiling water (about 100 ° C.) for 1 hour, and the appearance of the plate material It was confirmed. As a result, surface roughness and cloudiness were not observed. Therefore, the same effect can be obtained in the dental abutment 3 manufactured using such a resin material.
  • polypropylene may be, for example, 65 to 90%.
  • the polyethylene or ethylene ⁇ -olefin copolymer is less than 7%, peeling breakage is likely to occur as in the case of polypropylene, and conversely if it exceeds 25%, the oral cavity due to the expansion of the resin body as in the case of polypropylene.
  • the polyethylene or ethylene alpha olefin copolymer be in the range of, for example, 7-25%.
  • Magnesium stearate improves the mutual stirrability and mixing of the pigment, titanium oxide (or iron oxide) and resin, but if it is less than 0.01%, the effect (stirring and mixing in dyeing) In contrast, when the content exceeds 2%, stirring and mixing itself become difficult. For example, addition in the range of 0.01 to 2% is desirable.
  • the term “dyeing” refers to dyeing in a color close to the color of natural teeth when used for the dental abutment 3, for example.
  • a pigment and titanium oxide (or iron oxide) are added for coloring (coloring). For example, in order to produce a color close to natural teeth, the mixing ratio of an appropriate pigment and titanium oxide (white) is adjusted. Further, both titanium oxide and iron oxide can be added to a predetermined pigment to dye the resin in a desired color.
  • the content of titanium oxide (or iron oxide) is determined mainly by the dyeing method in relation to the pigment, and the magnesium stearate uniformly distributes the pigment, titanium oxide (iron oxide) and the resin material. It can be said that it contributes to the agitation ability to mix, and in turn, to the uniform dyeing property that uniformly colors evenly.
  • titanium oxide and iron oxide is less than 0.001% by weight, the color adjustment function for the pigment cannot be achieved. On the other hand, if it exceeds 1%, the function of color adjustment deviates. Further, in order to inhibit physical properties such as strength of the resin material, it is set within a range of 0.001 to 1%.
  • the composition of the pigment if it is less than 0.0001% by weight, the dyeing effect cannot be obtained. On the other hand, if it exceeds 1%, the intended dyeability is impaired, and the physical properties of the resin material are not preferable. Therefore, the pigment content is in the range of 0.0001 to 1%.
  • the dental abutment 3 having a desirable composition is such that the resin is less likely to cause breakage of the resin separation by setting the weight ratio within the range of 75 to 85% polypropylene and 15 to 20% polyethylene or ethylene ⁇ -olefin copolymer. Is also suppressed, and for example, the dimensional compatibility and mounting compatibility of the dental molded body in the root canal are improved.
  • the blending ratio of the copolymer polypropylene resin material in the abutment may be 70, 80, or 90% by weight or more.
  • magnesium stearate when magnesium stearate is 0.03 to 0.5%, one or both of titanium oxide and iron oxide is 0.003 to 0.1%, and pigment is 0.001 to 0.1%, magnesium stearate is first used.
  • the pigment / titanium oxide (iron oxide) and the resin can be more satisfactorily stirred and uniformly dyed, and the blending amount of one or both of titanium oxide and iron oxide, as well as the pigment
  • the dental abutment 3 (dental molded body) or dental resin material is combined with the effect of the magnesium stearate to give a better coloring / dying effect. be able to.
  • the dental abutment 3 has an appropriate bending strength, suppresses the expansion coefficient during cooling after injection molding of the resin body, and remains. It was able to be precisely adapted to natural teeth and artificial dental crowns, and obtained characteristics with moderate hardness to the human body.
  • the composition of the present invention in other words, deviates from the blending range of the above composition, from the viewpoint of the physical properties of the dental abutment 3 and the dental resin material, the specific bending strength possessed by the present invention cannot be obtained. Bending is easy to crease white, resulting in fractures (of the abutment itself or of teeth other than the abutment), resulting in a very fragile property unsuitable for the human body, and increased expansion even after injection molding, This results in a situation where it cannot be precisely adapted to the remaining natural teeth or artificial crowns.
  • the dental abutment 3 of the present invention since the water absorption is extremely low, the propagation of various germs is suppressed, the strength is high, the durability is high, and the specific gravity is small (light), so there is no feeling of wearing, and as a result In addition, the patient can use the dental abutment 3 for a long time in a sanitary and comfortable manner.
  • the resin material is melted and the predetermined dental abutment 3 is generally formed by injection molding.
  • the dental abutment 3 can be obtained that has less resin allergy to the human body as described above and is excellent in safety without leaching of bisphenol A or the like.
  • the dental abutment 3 for prosthetic restoration of the first premolar tooth T1 having two root canals 2a has been described.
  • a tooth having one root canal 2a canine teeth, etc.
  • One dental abutment 3 and artificial teeth are used (FIG. 7A)
  • if there are three root canals 2a molar teeth
  • three dental abutments 3 and artificial teeth are used.
  • FIG. 7B The prosthesis can be repaired. Therefore, the present invention is applied without limitation to the number and shape of all root canals 2a and the remaining shape of natural teeth.
  • Example 1 as a treatment method using the dental abutment 3, a method in which the dental abutment 3 and the artificial tooth are integrated with each other and the dental abutment 3 is attached to the root canal 2 a is exemplified.
  • artificial teeth may be attached to the dental abutment 3 after the dental abutment 3 is attached to the root canal 2a.
  • the working efficiency is increased by attaching the dental abutment 3 to the root canal 2a first.
  • the columnar dental abutment 3 whose diameter is continuously reduced from the upper end toward the lower end is illustrated.
  • the support portion 3b is formed in a columnar shape.
  • the insertion fixing part 3a may be formed in a conical shape (tapered shape) whose diameter continuously decreases toward the lower end.
  • the support portion 3b may be formed in a cylindrical shape
  • the insertion fixing portion 3a may be formed in a cylindrical shape that is coaxial with the support portion 3b and has a smaller diameter than the support portion 3b.
  • the support portion 3b may be formed in a columnar shape
  • the insertion fixing portion 3a may be formed in a conical shape having a bottom surface that is a circle coaxial with the support portion 3b and having a smaller diameter than the support portion 3b.
  • the insertion fixing portion 3a may have a shape in which the diameter is gradually reduced (FIG. 8D) or a shape in which only the tip portion is conical (FIG. 8E).
  • the insertion fixing portion 3a can be easily inserted into the root canal 2a shaped with a dental drill.
  • a step is provided in the root canal 2a (for example, the center of each circle is shifted so that two circles having different outer diameters overlap each other so as to have a gourd shape in plan view).
  • Example 1 the ready-made dental abutment 3 is illustrated and described, but in Example 2 described below, a dental abutment 30 formed from an impression collected for each patient will be described.
  • the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
  • the dental abutment 30 is inserted so as to protrude from the opening 2c of the root canal 2a toward the tooth crown side, and is inserted into the root canal 2a of the remaining natural tooth and fixed.
  • a support portion 30b that is formed continuously from the fixing portion 30a and supports the artificial teeth is integrally provided.
  • the insertion fixing part 30a is formed along the root canal 2a of the patient, and the support part 30b protrudes from the opening 2c of the root canal 2a to the outside of the root canal 2a and protrudes toward the crown, thereby directly supporting the artificial tooth.
  • the resin material and composition of the dental abutment 30 are the same as those in the first embodiment.
  • FIG. 1A when the first premolar tooth T1 is largely lost (FIG. 1A), the dental crown 1 of the first premolar tooth T1 of the patient's lower jaw is excised by the dentist, the pulp 2b is removed from the root canal 2a, and the root After the shape of the tube 2a is adjusted (FIG. 1B), an impression material (for example, dental cement) is used to collect the impression of the root canal 2a (including residual natural teeth), and a mouth model (gypsum model) is created from the impression. Then, after forming the mold of the dental abutment 30 (FIG.
  • an impression material for example, dental cement
  • the mold was buried in gypsum, and after the gypsum was cured, the wax was poured with hot water ( Flowing wax), the wax part is made hollow.
  • the pellet-shaped resin material of the dental abutment 30 is put into the barrel of a general-purpose resin molding machine, and the furnace temperature is set to 180 ° C. to 230 ° C. to be softened and dissolved.
  • the dental abutment 30 is completed by injection-molding the softened / dissolved material into the gypsum cavity and polymerizing and curing the material (FIG. 10A).
  • a concave hole portion 4c is formed in the artificial tooth so that the support portion 30b can be fitted without a gap, and the concave hole portion 4c and the convex portion are convex.
  • the support portions 30b are joined by dental cement 7 (not shown) (FIG. 10B).
  • the artificial tooth may be fixed to the support portion 30b by another means (for example, a bridge portion connected to an adjacent natural tooth) without joining the hole portion 4c and the support portion 30b.
  • the dental abutment 30 can be molded by taking an impression in the patient's mouth and forming an insertion fixing portion 30a that is adapted to the details of the patient's root canal 2a.
  • the dental abutment 30 can be formed into the patient's root canal. It becomes easy to insert in 2a. Further, since the support portion 30b protrudes from the opening 2c of the root canal 2a to the outside of the root canal 2a and protrudes toward the crown, and directly supports the artificial tooth (FIG. 10B), the position shift of the artificial tooth can be suppressed.
  • the present invention can be applied to any number or shape of root canals 2a, remaining shapes of natural teeth, etc. without any limitation.
  • the dental abutment 30 is formed by taking an impression, but the shape of the dental abutment 30 mounted in the mouth is directly measured by light such as a laser (optical impression method), so-called dental CAM.
  • a dental abutment 30 that fits the patient may be designed and molded by the CAD system.
  • an artificial tooth may be molded by a dental CAM / CAD system, or a hard artificial tooth that is a ready-made product may be used.
  • Example 1 and 2 of this invention were demonstrated, this invention is not limited to the specific description, It can also implement combining the illustrated structure etc. suitably in the range with no technical inconsistency. It is possible, and certain elements and processes can be replaced with known forms.
  • the first premolar artificial tooth 4 is exemplified, but permanent teeth such as the second premolar, the first premolar, the second premolar, the canine, the side incisor, and the central incisor. Artificial teeth corresponding to can be used.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (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 un pilier dentaire comprenant une partie de fixation d'introduction (3a) qui doit être introduite dans un canal radiculaire (2a) d'une dent naturelle restante et fixée en son sein, et une partie de support (3b) qui est formée de façon continue sur la partie de fixation d'introduction (3a) de façon à faire saillie vers le côté de couronne à partir d'une ouverture (2c) du canal radiculaire (2a) et soutient ainsi une partie de dent artificielle (une première prémolaire artificielle (4)), la partie de fixation d'introduction (3a) et la partie de support (3b) étant formées d'une seule pièce d'une résine qui contient 50 % en poids ou plus d'une résine de polyoléfine comme élément principal. Ainsi, l'invention concerne un pilier dentaire et une matière de résine dentaire, qui ont un risque d'allergie réduit, ont une haute élasticité et sont peu endommagés pendant un usage à long terme.
PCT/JP2013/078530 2013-10-22 2013-10-22 Pilier dentaire et matière de résine dentaire WO2015059761A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6087460B1 (ja) * 2016-04-04 2017-03-01 株式会社ユニックスジャパン 歯科用成形体及び歯科用樹脂材料
JPWO2017056180A1 (ja) * 2015-09-29 2017-10-05 株式会社プラクティブ 医療材料製造用ブロック、歯科補綴物製造用ブロック、及び医療材料製造用ブロックの製造方法
WO2019157550A1 (fr) * 2018-02-13 2019-08-22 Castle Cameron Glenn Méthode de chirurgie dentaire
AU2018201058B2 (en) * 2018-02-13 2024-02-15 Cameron Glenn Castle Dental Surgery Method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001502934A (ja) * 1996-09-17 2001-03-06 ジル、ビーエ 歯管を充填するための補強繊維で予め充満された歯内挿入物
JP2003505186A (ja) * 1999-08-03 2003-02-12 バーナード ワイスマン 長手方向中央の収斂型デンタルポスト
JP2006512161A (ja) * 2002-12-27 2006-04-13 ケニス コッチ， 一体構造グタペルカ芯材閉塞方法
WO2009144901A1 (fr) * 2008-05-30 2009-12-03 クラレメディカル株式会社 Tenon dentaire
JP2011184409A (ja) * 2010-03-10 2011-09-22 Yunikkusu Japan:Kk 歯科用成形体、及び歯科用樹脂材料
JP2012090676A (ja) * 2010-10-25 2012-05-17 Hisakakai インプラントの固定ねじのゆるみ止め部材
JP2013000127A (ja) * 2011-06-10 2013-01-07 Terubumi Asakura 歯科用治療具
JP2013179977A (ja) * 2012-02-29 2013-09-12 Atsushi Takahashi 根管治療器具

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001502934A (ja) * 1996-09-17 2001-03-06 ジル、ビーエ 歯管を充填するための補強繊維で予め充満された歯内挿入物
JP2003505186A (ja) * 1999-08-03 2003-02-12 バーナード ワイスマン 長手方向中央の収斂型デンタルポスト
JP2006512161A (ja) * 2002-12-27 2006-04-13 ケニス コッチ， 一体構造グタペルカ芯材閉塞方法
WO2009144901A1 (fr) * 2008-05-30 2009-12-03 クラレメディカル株式会社 Tenon dentaire
JP2011184409A (ja) * 2010-03-10 2011-09-22 Yunikkusu Japan:Kk 歯科用成形体、及び歯科用樹脂材料
JP2012090676A (ja) * 2010-10-25 2012-05-17 Hisakakai インプラントの固定ねじのゆるみ止め部材
JP2013000127A (ja) * 2011-06-10 2013-01-07 Terubumi Asakura 歯科用治療具
JP2013179977A (ja) * 2012-02-29 2013-09-12 Atsushi Takahashi 根管治療器具

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2017056180A1 (ja) * 2015-09-29 2017-10-05 株式会社プラクティブ 医療材料製造用ブロック、歯科補綴物製造用ブロック、及び医療材料製造用ブロックの製造方法
JP6087460B1 (ja) * 2016-04-04 2017-03-01 株式会社ユニックスジャパン 歯科用成形体及び歯科用樹脂材料
JP2017186269A (ja) * 2016-04-04 2017-10-12 株式会社ユニックスジャパン 歯科用成形体及び歯科用樹脂材料
WO2019157550A1 (fr) * 2018-02-13 2019-08-22 Castle Cameron Glenn Méthode de chirurgie dentaire
US20210052354A1 (en) * 2018-02-13 2021-02-25 Cameron Glenn Castle Dental surgery method
AU2018201058B2 (en) * 2018-02-13 2024-02-15 Cameron Glenn Castle Dental Surgery Method
US11986372B2 (en) 2018-02-13 2024-05-21 Castle Wall Pty Ltd Dental surgery method

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