WO2022209201A1 - イオン徐放性複合粒子、及びイオン徐放性複合粒子の製造方法 - Google Patents
イオン徐放性複合粒子、及びイオン徐放性複合粒子の製造方法 Download PDFInfo
- Publication number
- WO2022209201A1 WO2022209201A1 PCT/JP2022/002286 JP2022002286W WO2022209201A1 WO 2022209201 A1 WO2022209201 A1 WO 2022209201A1 JP 2022002286 W JP2022002286 W JP 2022002286W WO 2022209201 A1 WO2022209201 A1 WO 2022209201A1
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- WIPO (PCT)
- Prior art keywords
- sustained
- mass
- glass
- release
- ion
- Prior art date
Links
- 239000011246 composite particle Substances 0.000 title claims abstract description 65
- 238000013268 sustained release Methods 0.000 title claims abstract description 20
- 239000012730 sustained-release form Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title description 3
- 150000002500 ions Chemical class 0.000 claims abstract description 158
- 239000011521 glass Substances 0.000 claims abstract description 105
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- -1 acrylate compound Chemical class 0.000 claims abstract description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 25
- 229920001577 copolymer Polymers 0.000 claims abstract description 16
- 229920001519 homopolymer Polymers 0.000 claims abstract description 13
- 230000002459 sustained effect Effects 0.000 claims description 137
- 230000003578 releasing effect Effects 0.000 claims description 36
- 239000000203 mixture Substances 0.000 claims description 27
- 239000011701 zinc Substances 0.000 claims description 7
- 230000001588 bifunctional effect Effects 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 20
- 239000002253 acid Substances 0.000 description 15
- 230000009257 reactivity Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 9
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- 229910000077 silane Inorganic materials 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 208000008617 Tooth Demineralization Diseases 0.000 description 4
- 206010072665 Tooth demineralisation Diseases 0.000 description 4
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 4
- 229910001424 calcium ion Inorganic materials 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 2
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- AMFGWXWBFGVCKG-UHFFFAOYSA-N Panavia opaque Chemical compound C1=CC(OCC(O)COC(=O)C(=C)C)=CC=C1C(C)(C)C1=CC=C(OCC(O)COC(=O)C(C)=C)C=C1 AMFGWXWBFGVCKG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003479 dental cement Substances 0.000 description 2
- 239000005548 dental material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001427 strontium ion Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- PPTGDAXMBSTFFG-UHFFFAOYSA-N (6-carbamoyloxy-3,5,5-trimethylhexyl) carbamate Chemical compound CC(CCOC(N)=O)CC(C)(C)COC(N)=O PPTGDAXMBSTFFG-UHFFFAOYSA-N 0.000 description 1
- UEKHZPDUBLCUHN-UHFFFAOYSA-N 2-[[3,5,5-trimethyl-6-[2-(2-methylprop-2-enoyloxy)ethoxycarbonylamino]hexyl]carbamoyloxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOC(=O)NCCC(C)CC(C)(C)CNC(=O)OCCOC(=O)C(C)=C UEKHZPDUBLCUHN-UHFFFAOYSA-N 0.000 description 1
- UPTHZKIDNHJFKQ-UHFFFAOYSA-N 2-methylprop-2-enoic acid;propane-1,2,3-triol Chemical compound CC(=C)C(O)=O.CC(=C)C(O)=O.OCC(O)CO UPTHZKIDNHJFKQ-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000000675 anti-caries Effects 0.000 description 1
- QUZSUMLPWDHKCJ-UHFFFAOYSA-N bisphenol A dimethacrylate Chemical class C1=CC(OC(=O)C(=C)C)=CC=C1C(C)(C)C1=CC=C(OC(=O)C(C)=C)C=C1 QUZSUMLPWDHKCJ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011350 dental composite resin Substances 0.000 description 1
- 239000000551 dentifrice Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003178 glass ionomer cement Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- UFQXGXDIJMBKTC-UHFFFAOYSA-N oxostrontium Chemical compound [Sr]=O UFQXGXDIJMBKTC-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 229940005581 sodium lactate Drugs 0.000 description 1
- NGSFWBMYFKHRBD-DKWTVANSSA-M sodium;(2s)-2-hydroxypropanoate Chemical compound [Na+].C[C@H](O)C([O-])=O NGSFWBMYFKHRBD-DKWTVANSSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
- A61K6/77—Glass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/40—Organo-silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
- C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
- C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
- C03C4/0021—Compositions for glass with special properties for biologically-compatible glass for dental use
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/34—Doped silica-based glasses containing metals containing rare earth metals
- C03C2201/3417—Lanthanum
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/04—Particles; Flakes
- C03C2214/05—Particles; Flakes surface treated, e.g. coated
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/24—Doped oxides
Definitions
- the present invention relates to sustained ion release composite particles.
- fluoroaluminosilicate glass is known as a sustained ion release glass.
- fluoride ions are gradually released from the dental composition, which can be expected to improve tooth quality.
- dental compositions include, for example, glass ionomer cements.
- Japanese Patent No. 6783852 Japanese Patent No. 6744399 Japanese Patent No. 6633750 Japanese Patent No. 6687731
- sustained ion-releasing glass such as fluoroaluminosilicate glass and zinc-containing glass is highly reactive to acids, and therefore tends to cause storage problems and curing time problems when blended in dental compositions. .
- An object of the present invention is to provide sustained ion release composite particles with suppressed acid reactivity and good sustained ion release.
- a sustained ion-release composite particle according to an aspect of the present invention is a sustained ion-release composite particle containing a sustained ion-release glass and a polymer compound, wherein the polymer compound has a hydroxyl group ( Including homopolymers or copolymers of meth)acrylate compounds.
- sustained ion-releasing composite particles with suppressed acid reactivity and excellent sustained ion-releasing properties.
- the sustained ion-releasing composite particles according to the present embodiment contain a sustained ion-releasing glass and a polymer compound.
- sustained ion release refers to a property in which the components contained in the glass dissolve and are gradually released in the form of ions.
- Composite particles are particles in which sustained ion-releasing glass particles are combined with polymers.
- the sustained ion-release glass contained in the sustained ion-release composite particles is preferably glass containing at least one of zinc, calcium, lanthanum and strontium.
- the content of zinc in the sustained ion release glass is not particularly limited, but for example, the content of zinc oxide (ZnO) in terms of oxide is 3% by mass or more and 60% by mass or less, preferably 5% by mass or more. It is 50 mass % or less, more preferably 10 mass % or more and 40 mass % or less.
- ZnO zinc oxide
- the sustained release of zinc ions in the sustained ion-release glass can be enhanced, and the effect of suppressing tooth demineralization can be improved. can. Further, by setting the content of ZnO in the sustained ion-release glass to 60% by mass or less, the viscosity of the sustained ion-release glass is lowered, and the sustained ion-release composite particles are used in a dental composition. Operability can be improved.
- the content of calcium contained in the sustained ion-release glass is not particularly limited. %, preferably 3% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 15% by mass or less.
- the sustained release of calcium ions in the sustained ion-release glass can be enhanced, and the effect of suppressing tooth demineralization can be improved. can. Further, by setting the CaO content in the sustained ion-release glass to 25% by mass or less, the viscosity of the sustained ion-release glass is lowered, and the sustained ion-release composite particles are used in a dental composition. Operability can be improved.
- the content of lanthanum in the sustained ion release glass is not particularly limited. % by mass or more and 50% by mass or less, more preferably 30% by mass or more and 40% by mass or less.
- the content of La 2 O 3 in the sustained ion release glass is 5% by mass or more, the acid resistance of the glass is improved, and by making it 60% by mass or less, the sustained ion release glass powder is produced. easier to do.
- the content of strontium in the sustained ion release glass is not particularly limited, but for example, the content of strontium oxide (SrO) in terms of oxide is 5% by mass or more and 55% by mass or less, preferably 10% by mass or more. It is 50 mass % or less, more preferably 20 mass % or more and 45 mass % or less.
- SrO strontium oxide
- the sustained release of strontium ions in the sustained ion-release glass can be enhanced, and the effect of suppressing tooth demineralization can be improved. can. Further, by setting the SrO content in the sustained ion-release glass to 55% by mass or less, the viscosity of the sustained ion-release glass is lowered, and the sustained ion-release composite particles are used in a dental composition. Operability can be improved.
- the sustained ion release glass may contain aluminum, silicon, and fluorine as other components.
- the content of aluminum in the sustained ion release glass is not particularly limited, but for example, the content of aluminum oxide (Al 2 O 3 ) in terms of oxide is 0.1% by mass or more and 30% by mass or less, preferably is 0.3% by mass or more and 25% by mass or less, more preferably 0.5% by mass or more and 20% by mass or less.
- Al 2 O 3 aluminum oxide
- the content of silicon (Si) in the sustained ion release glass is not particularly limited.
- the content of silicon in the sustained ion release glass is preferably silicon oxide (SiO 2 ) in terms of oxide. is 1% by mass or more and 65% by mass or less, more preferably 1% by mass or more and 60% by mass or less, and still more preferably 1% by mass or more and 55% by mass or less.
- the content of SiO 2 in the sustained ion release glass is 1% by mass or more, it becomes easy to obtain glass with high transparency. becomes easier to obtain.
- the content of fluorine (F) in the sustained ion release glass is not particularly limited.
- the content of fluorine in the sustained ion release glass is 1% by mass or more and 30% by mass or less, preferably 3% by mass or more and 25% by mass or less, more preferably 4% by mass or more and 20% by mass or less.
- the sustained release of fluoride ions in the dental composition is enhanced, and the effect of suppressing tooth demineralization can be improved. An anti-caries effect can be imparted. Further, by setting the F content in the sustained ion release glass to 30% by mass or less, it becomes easy to adjust the viscosity of the sustained ion release glass.
- the sustained ion-releasing glass is preferably glass that does not substantially contain phosphorus, or glass that contains a small amount of phosphorus, even if it contains phosphorus.
- substantially free means that the target component such as phosphorus is not intentionally blended.
- the "substantially free" target component may be included as an unavoidable impurity.
- the content of the target component when it is contained as an unavoidable impurity is preferably less than 2% by mass.
- the content of phosphoric acid (P 2 O 5 ) in terms of oxide is preferably 5% by mass or less.
- the sustained ion-releasing glass does not substantially contain phosphorus, the sustained-released cations such as zinc ions and calcium ions are not trapped by phosphate ions. It is possible to improve the sustained release of cations such as
- the sustained ion release glass is more preferably glass that does not substantially contain sodium.
- the sustained ion release glass does not substantially contain sodium, the slowly released cations such as zinc ions and calcium ions are not trapped by sodium. It is possible to improve the sustained release of cations.
- the amount of the sustained ion-release glass in the sustained ion-release composite particles is, for example, preferably 40% by mass or more and 90% by mass or less, more preferably 50% by mass or more and 80% by mass or less, and still more preferably 60% by mass. It is more than mass % and below 70 mass %.
- the amount of the sustained ion-release glass in the sustained ion-release composite particles is 40% by mass or more, the sustained ion release effect from the composition containing the sustained ion-release composite particles is easily obtained, and the amount is 90% by mass. When it is below, it becomes easy to manufacture the sustained ion-releasing composite particles.
- the form of the sustained ion release glass is preferably powder (or powder).
- the sustained ion release glass can be easily blended into the dental composition.
- the particle size of the sustained ion release glass is 0.02 ⁇ m or more and 30 ⁇ m or less, more preferably 0.02 ⁇ m or more and 25 ⁇ m or less, and still more preferably 0.02 ⁇ m or more and 20 ⁇ m or less in terms of median diameter.
- the particle size means the average particle size defined by the median size.
- the sustained ion-releasing glass has a particle size of 0.02 ⁇ m or more
- the sustained ion-releasing composite particles are added to the dental composition. Operability is improved when used. Further, when the particle size of the sustained ion release glass is 30 ⁇ m or less, the abrasion resistance of the hardened dental composition is improved.
- the polymer compound contained in the sustained ion release composite particles contains a homopolymer or copolymer of a (meth)acrylate compound having a hydroxyl group.
- (meth)acrylate indicates at least one selected from acrylate and methacrylate.
- a homopolymer means a polymer mainly composed of structural units of a certain polymerization component.
- a copolymer means a polymer obtained by copolymerizing a structural unit of a certain polymerizable component and a structural unit of another polymerizable component.
- the homopolymer and copolymer may contain other polymer components that are inevitably mixed.
- the sustained ion-releasing composite particles By including a homopolymer or copolymer of a (meth)acrylate compound having a hydroxyl group in the polymer compound contained in the sustained ion-releasing composite particles, while suppressing the acid reactivity of the sustained ion-releasing glass, It becomes possible to keep the ion sustained release property well. As a result, when the sustained ion-releasing composite particles are used in a dental composition, the curing time of the dental composition is suppressed while maintaining the favorable sustained ion-releasing properties of the sustained ion-releasing glass. can do.
- (meth)acrylate compounds having a hydroxyl group examples include hydroxyethyl methacrylate (HEMA), glycerin dimethacrylate (GDMA), bisphenol A diglycidyl methacrylate (Bis-GMA), and the like. These hydroxyl group-containing (meth)acrylate compounds may be used alone or in combination of two or more.
- HEMA hydroxyethyl methacrylate
- GDMA glycerin dimethacrylate
- Bis-GMA bisphenol A diglycidyl methacrylate
- hydroxyl group-containing (meth)acrylate compounds may be used alone or in combination of two or more.
- the content of the homopolymer or copolymer of the (meth)acrylate compound having a hydroxyl group in the polymer compound contained in the sustained ion release composite particles is not particularly limited, for example, 50 mass in the polymer compound. % or more and 100 mass % or less, preferably 60 mass % or more and 100 mass % or less, more preferably 70 mass % or more and 100 mass % or less.
- the sustained ion-releasing glass By making the content of the homopolymer or copolymer of the (meth)acrylate compound having a hydroxyl group in the polymer compound contained in the sustained ion-releasing composite particles 50% by mass or more, the sustained ion-releasing glass can be obtained. Acid reactivity can be sufficiently suppressed.
- a copolymer of a (meth)acrylate compound having a hydroxyl group may contain monomer units of other (meth)acrylate compounds other than the (meth)acrylate compound having a hydroxyl group.
- (meth)acrylate compounds contained as monomer units other than (meth)acrylates having hydroxyl groups include, for example, polyfunctional (meth)acrylate compounds, among which bifunctional (meth)acrylate compounds are preferred.
- bifunctional (meth)acrylate compounds include ethoxylated bisphenol A dimethacrylate, di-2-methacryloyloxyethyl 2,2,4-trimethylhexamethylene dicarbamate (UDMA), triethylene glycol dimethacrylate (TEGDMA), and the like. are mentioned.
- UDMA di-2-methacryloyloxyethyl 2,2,4-trimethylhexamethylene dicarbamate
- TEGDMA triethylene glycol dimethacrylate
- One type of these bifunctional (meth)acrylate compounds may be used, or two or more types may be used in combination.
- the content of the bifunctional (meth)acrylate compound contained as a monomer unit in the copolymer of the (meth)acrylate compound having a hydroxyl group in the polymer compound contained in the sustained ion release composite particles is not particularly limited.
- it can be 1% by mass or more and 40% by mass or less in the polymer compound, preferably 5% by mass or more and 35% by mass or less, more preferably 10% by mass or more and 30% by mass or less.
- the polymeric compound contained in the sustained ion-release composite particles contains bifunctional (meth)acrylate monomer units as other (meth)acrylate compounds. Flexibility can be imparted to products using the sustained ion release composite particles while maintaining the mechanical strength of the sustained release composite particles.
- the blending amount of the homopolymer or copolymer of the (meth)acrylate compound having a hydroxyl group in the sustained ion release composite particles is, for example, preferably 10% by mass or more and 45% by mass or less, more preferably 15% by mass. % by mass or more and 40% by mass or less, more preferably 20% by mass or more and 30% by mass or less.
- the amount of the homopolymer or copolymer of the (meth)acrylate compound having a hydroxyl group in the sustained ion release composite particles is 10% by mass or more, the acid reactivity of the sustained ion release composite particles is suppressed.
- the content is 45% by mass or less, the sustained release of ions from the sustained ion release composite particles is improved.
- the sustained ion release composite particles of the present embodiment may contain other components as long as they do not impair the purpose of the present invention.
- Other components contained in the sustained ion release composite particles include, for example, fillers, polymerization initiators, and polymerization inhibitors.
- the component of the filler is not particularly limited, but inorganic fillers are preferable, and examples thereof include colloidal silica, fine particle silica whose surface is hydrophobized, aluminum oxide (excluding aluminum oxide in the sustained ion release glass), and the like. These fillers may be used alone or in combination of two or more.
- the content of the filler in the sustained ion release composite particles is, for example, preferably 0.01% by mass or more and 30% by mass or less, more preferably 0.05% by mass or more and 20% by mass or less, and still more preferably 0% by mass. .1% by mass or more and 10% by mass or less.
- the content of the filler in the sustained ion release composite particles is 0.01% by mass or more, the dispersibility of the sustained ion release glass in the dental composition is improved, and when it is 30% by mass or less, The compounding amount of the sustained ion release glass can be increased.
- the polymerization initiator is not particularly limited, but includes, for example, azobisisobutyronitrile (AIBN).
- the content of the polymerization initiator in the sustained ion release composite particles is not particularly limited, but is, for example, 0.01 to 3% by mass, preferably 0.03 to 2% by mass, and more preferably It is 0.05 mass % or more and 1 mass % or less.
- the content of the polymerization initiator in the sustained ion-release composite particles is 0.01% by mass or more and 3% by mass or less, the effect of suppressing the acid reactivity of the sustained ion-release glass is stabilized, and the sustained ion release is achieved. The sustained release of ions from the glass is stabilized.
- the polymerization inhibitor is not particularly limited, but includes, for example, 2,6-di-tert-butyl-p-cresol.
- the content of the polymerization inhibitor in the sustained ion release composite particles is not particularly limited, but is, for example, 0.01% by mass or more and 5% by mass or less, preferably 0.05% by mass or more and 3% by mass or less, or more. It is preferably 0.1% by mass or more and 2% by mass or less.
- the content of the polymerization inhibitor in the sustained ion-release composite particles is 0.01% by mass or more and 5% by mass or less, the effect of suppressing the acid reactivity of the sustained ion-release glass is stabilized, and the sustained ion-release is achieved. The sustained release of ions from the glass is stabilized.
- the application of the sustained ion-releasing composite particles of the present embodiment is not particularly limited, it can be used, for example, in various dental materials.
- dental materials include dental cements, dental adhesives, dental temporary sealing materials, dental primers, dental coating materials, dental composite resins, dental hard resins, and dental cutting resin materials. , dental temporary restorative materials, dental fillers, dentifrices, and the like. Among these, it is suitably used as a temporary dental sealing material.
- a method for producing sustained ion-release composite particles according to the present embodiment is a method for producing sustained ion-release glass and sustained ion-release composite particles containing a polymer compound, wherein the sustained ion-release glass, and polymerizing and curing a mixture containing a (meth)acrylate compound having a hydroxyl group.
- the method for producing the sustained ion-release composite particles according to the present embodiment is substantially the method for producing the sustained ion-release composite particles of the present embodiment described above.
- the sustained ion-releasing glass used in the method for producing the sustained ion-releasing composite particles according to the present embodiment and the polymeric compound that is a (meth)acrylate compound having a hydroxyl group include the above-described ion-sustaining particles of the present embodiment.
- a sustained ion release glass contained in the release composite particles and a (meth)acrylate compound having a hydroxyl group can be used.
- a step of polymerizing and curing a mixture (hereinafter referred to as a mixture) containing a sustained ion-releasing glass and a (meth)acrylate compound having a hydroxyl group (hereinafter referred to as polymerization step), the mixture preferably further contains a polymerization initiator.
- the polymerization initiator is not particularly limited, but includes, for example, azobisisobutyronitrile (AIBN).
- the mixture preferably further contains a polymerization inhibitor.
- the polymerization inhibitor is not particularly limited, but includes, for example, 2,6-di-tert-butyl-p-cresol.
- the method for producing the sustained ion-releasing composite particles of the present embodiment preferably further includes a silane treatment step.
- the silane treatment step is a step of silanizing the sustained ion release glass contained in the sustained ion release composite particles with a silane treatment agent.
- the silane treatment agent is not particularly limited, but includes, for example, 3-methacryloyloxypropyltrimethoxysilane.
- the mixture is polymerized and cured in the polymerization step to obtain a cured product (hereinafter referred to as a cured polymer).
- a cured polymer contains a sustained ion release glass and a homopolymer or copolymer of a (meth)acrylate compound having a hydroxyl group.
- the cured polymer is pulverized to form sustained ion-releasing composite particles.
- the grinding method is not particularly limited, and for example, a stamp mill, planetary mill, etc. can be used.
- the pulverized hardened polymer (pulverized material) can be passed through a sieve to obtain sustained ion release composite particles adjusted to the desired particle size.
- the particle size of the sustained ion-releasing glass to be adjusted is not particularly limited. be.
- Examples 1 to 10 and Comparative Examples 1 to 12 Silane-treated glass powder (Glass Examples 1 to 6) and other components (original solution and R812) were mixed with the compositions shown in Tables 2 to 13, defoamed under conditions of 2000 rpm and 10 kPa, and poured into a silicone mold. and 90° C. for 3 hours to polymerize.
- the component indicated by R812 in Tables 2, 4, 6, 8, 10, and 12 is fine particle silica (Aerosil (registered trademark) R812, manufactured by Nippon Aerosil Co., Ltd.) surface-treated with hexamethyldisilazane.
- the resulting polymer (hardened polymer) was pulverized with a stamp mill for 2 minutes and with a planetary mill at 150 rpm for 60 minutes, passed through a 200-mesh sieve, and obtained in Examples 1 to 10 and Comparative Examples 1 to 12.
- a composite powder composite particles was obtained.
- Comparative Examples 2, 4, 6, 8, 10 and 12 are cases in which Glass Examples 1 to 6 were used as they were without being combined with a polymer compound.
- the resulting composite powders (Examples 1 to 10, Comparative Examples 1 to 12) were evaluated for sustained ion release and acid reactivity. Various tests and evaluations are conducted according to the following methods.
- ⁇ Ion elution test of composite powder Put 0.01 g of the composite powder in a glass vial, add 10 mL of a 1:1 mixed solution (pH 4.5) of 0.2 mol/L lactic acid-sodium lactate buffer and methanol, and stir for 24 hours. Centrifuge for 1 minute. The amount of ions in the filtrate filtered through a 0.20 ⁇ m filter was measured using an inductively coupled plasma (ICP) emission spectrometer (manufactured by Thermo Fisher). The ion species measured are Zn 2+ , Ca 2+ , La 3+ and Sr 2+ .
- ICP inductively coupled plasma
- the composite particles containing sustained ion-releasing glass and a polymer compound, in which the polymer compound contains a (meth)acrylate compound having a hydroxyl group have sustained ion-releasing properties and acid reactivity. All were good (Examples 1 to 10).
- the composite particles containing the sustained ion-releasing glass and the polymer compound, and the polymer compound does not contain a (meth)acrylate compound having a hydroxyl group were unable to sustain the ion release.
- sustained ion release glass that was not combined with a polymer compound was not acid-reactive (Comparative Examples 2, 4, 6, 8, 10, 12).
- the sustained ion release glass and the sustained ion release composite particles containing a homopolymer or copolymer of a (meth)acrylate compound having a hydroxyl group as a polymer compound have suppressed acid reactivity. , it was found that the sustained release of ions was maintained.
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Abstract
Description
本実施形態に係るイオン徐放性複合粒子は、イオン徐放性ガラス、及び、高分子化合物を含む。本明細書において、イオン徐放性とは、ガラスに含まれる成分が溶解してイオンの状態で徐々に放出される性質を示す。複合粒子は、イオン徐放性ガラスの粒子が、高分子と複合化された粒子である。
本実施形態に係るイオン徐放性複合粒子の製造方法は、イオン徐放性ガラス、及び、高分子化合物を含むイオン徐放性複合粒子の製造方法であって、イオン徐放性ガラス、及び、ヒドロキシル基を有する(メタ)アクリレート化合物を含む混合物を重合硬化させる工程、を含む。本実施形態に係るイオン徐放性複合粒子の製造方法は、実質的に、上述した本実施形態のイオン徐放性複合粒子を製造する方法である。
表1に示した組成のガラス例1~6を調製し、各ガラスを粉砕して、メジアン径0.4μmのガラス粉末とした。
ガラス粉末を400℃で2時間アニーリングした後、4%の3-メタクリロイルオキシプロピルトリメトキシシランでシラン処理し、110℃で3時間乾燥し、シラン処理ガラス粉末(ガラス例1~6)とした。
表2~13に示した組成で、シラン処理ガラス粉末(ガラス例1~6)及びその他成分(元液及びR812)を混合し、2000rpm、10kPaの条件で脱泡した後、シリコーン型に流し出し、90℃で3時間加熱し重合した。なお、表2、4、6、8、10、12中のR812で示される成分は、ヘキサメチルジシラザンで表面処理された微粒子シリカ(日本アエロジル社製、アエロジル(登録商標)R812)である。得られた重合物(重合硬化体)を、スタンプミルで2分間、遊星ミルで150rpm、60分間粉砕し、200メッシュの篩を通過させて、実施例1~10、及び比較例1~12の複合粉末(複合粒子)を得た。なお、比較例2、4、6、8、10、12は高分子化合物との複合化を行わず、それぞれガラス例1~6をそのまま用いた場合である。
複合粉末0.01gをガラスバイアル瓶に入れ、0.2mol/L乳酸-乳酸ナトリウム緩衝液とメタノールを1:1で混合した溶液(pH4.5)10mLを加え24時間攪拌した後、3000rpmで10分間遠心分離した。0.20μmのフィルターでろ過したろ液について誘導結合プラズマ(ICP)発光分光分析装置(Thermo Fisher社製)を用いて、イオン量を測定した。測定したイオン種は、Zn2+、Ca2+、La3+、Sr2+である。
複合粉末のイオン溶出試験にて、亜鉛イオン(Zn2+)、カルシウムイオン(Ca2+)、ランタンイオン(La3+)、ストロンチウムイオン(Sr2+)の少なくとも1種のイオンの検出量を測定した。測定したイオン検出量に関して、実施例1~5及び比較例2については、比較例1のイオン検出量を基準に増加した割合を算出した(表2、3)。実施例6~10及び比較例4、6、8、10、12については、それぞれ比較例3、5、7、9、11を基準に増加した割合を算出した(表4~13)。評価基準を以下の通りにすることでイオン徐放性を評価した。なお、比較例1、3、5、7、9、11は不可と評価した。イオン徐放性の結果を表14~19に示す。
良:10%以上である場合
不可:10%未満である場合
温度23℃、湿度50%の恒温室内にて、複合粉末及びイオン放出型充填用材料(ジーシー社製、ケアダイン(登録商標)レストア液)を粉液比1:1にて混合後、30秒間練和し練和物を得た。練和物を直径8mm、高さ2mmのリングに充填し、赤外放射発熱計で練和物の発熱ピークを観測した。評価基準を以下の通りにすることで酸反応性を評価した。酸反応性の結果を表14~19に示す。
良:ピーク温度が比較例2、4、6、8、10又は12(同一のガラス例で高分子化合物との複合化を行わなかった場合)の50%未満
不可:ピーク温度が比較例2、4、6、8、10又は12(同一のガラス例で高分子化合物との複合化を行わなかった場合)の50%以上
Claims (4)
- イオン徐放性ガラス、及び、高分子化合物を含む、イオン徐放性複合粒子であって、
前記高分子化合物が、ヒドロキシル基を有する(メタ)アクリレート化合物の単一重合体又は共重合体を含む、
イオン徐放性複合粒子。 - 前記イオン徐放性ガラスが、亜鉛、カルシウム、ランタン、及びストロンチウムの少なくとも1種を含有するガラスである、
請求項1に記載のイオン徐放性複合粒子。 - 前記ヒドロキシル基を有する(メタ)アクリレート化合物の共重合体は、二官能(メタ)アクリレート化合物のモノマー単位を、含む、
請求項1又は2に記載のイオン徐放性複合粒子。 - イオン徐放性ガラス、及び、高分子化合物を含むイオン徐放性複合粒子の製造方法であって、
前記イオン徐放性ガラス、及び、ヒドロキシル基を有する(メタ)アクリレート化合物を含む混合物を重合硬化させる工程、を含む、
イオン徐放性複合粒子の製造方法。
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WO1994023687A1 (en) * | 1993-04-15 | 1994-10-27 | Shofu Inc. | Preformed glass ionomer filler which can sustainedly release fluoride ion and dental composition containing the same |
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JP2017145249A (ja) * | 2016-02-17 | 2017-08-24 | 株式会社松風 | 表面に反応基を多く有する有機無機複合フィラー及びそれらを配合した歯科用硬化性組成物 |
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WO1994023687A1 (en) * | 1993-04-15 | 1994-10-27 | Shofu Inc. | Preformed glass ionomer filler which can sustainedly release fluoride ion and dental composition containing the same |
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JP2010083794A (ja) * | 2008-09-30 | 2010-04-15 | Gc Corp | 有機無機複合充填材 |
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