JP4782251B2 - 歯科用硬化性組成物及びそれを用いたコンポジットレジン - Google Patents
歯科用硬化性組成物及びそれを用いたコンポジットレジン Download PDFInfo
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- JP4782251B2 JP4782251B2 JP2011514947A JP2011514947A JP4782251B2 JP 4782251 B2 JP4782251 B2 JP 4782251B2 JP 2011514947 A JP2011514947 A JP 2011514947A JP 2011514947 A JP2011514947 A JP 2011514947A JP 4782251 B2 JP4782251 B2 JP 4782251B2
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- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 1
- DIJRHOZMLZRNLM-UHFFFAOYSA-N dimethoxy-methyl-(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](C)(OC)CCC(F)(F)F DIJRHOZMLZRNLM-UHFFFAOYSA-N 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 description 1
- MIBMTBXKARQXFP-UHFFFAOYSA-N diphenylphosphoryl-(2,3,5,6-tetramethylphenyl)methanone Chemical compound CC1=CC(C)=C(C)C(C(=O)P(=O)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1C MIBMTBXKARQXFP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 235000019414 erythritol Nutrition 0.000 description 1
- 229940009714 erythritol Drugs 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000003955 fissure sealant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- FATAVLOOLIRUNA-UHFFFAOYSA-N formylmethyl Chemical group [CH2]C=O FATAVLOOLIRUNA-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- XFBCAFRNNFDRNG-UHFFFAOYSA-M lithium;2,4,6-triethylbenzenesulfinate Chemical compound [Li+].CCC1=CC(CC)=C(S([O-])=O)C(CC)=C1 XFBCAFRNNFDRNG-UHFFFAOYSA-M 0.000 description 1
- MIVOPSLBXCQIBW-UHFFFAOYSA-M lithium;2,4,6-trimethylbenzenesulfinate Chemical compound [Li+].CC1=CC(C)=C(S([O-])=O)C(C)=C1 MIVOPSLBXCQIBW-UHFFFAOYSA-M 0.000 description 1
- MSUZXYWQEDRGFN-UHFFFAOYSA-M lithium;4-methylbenzenesulfinate Chemical compound [Li+].CC1=CC=C(S([O-])=O)C=C1 MSUZXYWQEDRGFN-UHFFFAOYSA-M 0.000 description 1
- NVSKMOMNGUJKCL-UHFFFAOYSA-M lithium;benzenesulfinate Chemical compound [Li+].[O-]S(=O)C1=CC=CC=C1 NVSKMOMNGUJKCL-UHFFFAOYSA-M 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- ITNVWQNWHXEMNS-UHFFFAOYSA-N methanolate;titanium(4+) Chemical compound [Ti+4].[O-]C.[O-]C.[O-]C.[O-]C ITNVWQNWHXEMNS-UHFFFAOYSA-N 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
- 229960001047 methyl salicylate Drugs 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- LKNDYQNNDRTHFP-UHFFFAOYSA-N n,n,3,4-tetramethylaniline Chemical compound CN(C)C1=CC=C(C)C(C)=C1 LKNDYQNNDRTHFP-UHFFFAOYSA-N 0.000 description 1
- CWOMTHDOJCARBY-UHFFFAOYSA-N n,n,3-trimethylaniline Chemical compound CN(C)C1=CC=CC(C)=C1 CWOMTHDOJCARBY-UHFFFAOYSA-N 0.000 description 1
- GYVGXEWAOAAJEU-UHFFFAOYSA-N n,n,4-trimethylaniline Chemical compound CN(C)C1=CC=C(C)C=C1 GYVGXEWAOAAJEU-UHFFFAOYSA-N 0.000 description 1
- MJRUTYCVCLZWSR-UHFFFAOYSA-N n,n-dimethyl-4-propan-2-ylaniline Chemical compound CC(C)C1=CC=C(N(C)C)C=C1 MJRUTYCVCLZWSR-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- BFYJDHRWCNNYJQ-UHFFFAOYSA-N oxo-(3-oxo-3-phenylpropoxy)-(2,4,6-trimethylphenyl)phosphanium Chemical compound CC1=CC(C)=CC(C)=C1[P+](=O)OCCC(=O)C1=CC=CC=C1 BFYJDHRWCNNYJQ-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- LYTNHSCLZRMKON-UHFFFAOYSA-L oxygen(2-);zirconium(4+);diacetate Chemical compound [O-2].[Zr+4].CC([O-])=O.CC([O-])=O LYTNHSCLZRMKON-UHFFFAOYSA-L 0.000 description 1
- ZRSNZINYAWTAHE-UHFFFAOYSA-N p-methoxybenzaldehyde Chemical compound COC1=CC=C(C=O)C=C1 ZRSNZINYAWTAHE-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- TZMFJUDUGYTVRY-UHFFFAOYSA-N pentane-2,3-dione Chemical compound CCC(=O)C(C)=O TZMFJUDUGYTVRY-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000005054 phenyltrichlorosilane Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- HPWMVNFJSFHJIW-UHFFFAOYSA-M potassium;2,4,6-tri(propan-2-yl)benzenesulfinate Chemical compound [K+].CC(C)C1=CC(C(C)C)=C(S([O-])=O)C(C(C)C)=C1 HPWMVNFJSFHJIW-UHFFFAOYSA-M 0.000 description 1
- NLZLDWFYQXFPSZ-UHFFFAOYSA-M potassium;2,4,6-triethylbenzenesulfinate Chemical compound [K+].CCC1=CC(CC)=C(S([O-])=O)C(CC)=C1 NLZLDWFYQXFPSZ-UHFFFAOYSA-M 0.000 description 1
- SCRWQCKSJIHKKV-UHFFFAOYSA-M potassium;2,4,6-trimethylbenzenesulfinate Chemical compound [K+].CC1=CC(C)=C(S([O-])=O)C(C)=C1 SCRWQCKSJIHKKV-UHFFFAOYSA-M 0.000 description 1
- YVHWGMMGEAQQRT-UHFFFAOYSA-M potassium;4-methylbenzenesulfinate Chemical compound [K+].CC1=CC=C(S([O-])=O)C=C1 YVHWGMMGEAQQRT-UHFFFAOYSA-M 0.000 description 1
- LZSBNSVOXWMXLL-UHFFFAOYSA-M potassium;benzenesulfinate Chemical compound [K+].[O-]S(=O)C1=CC=CC=C1 LZSBNSVOXWMXLL-UHFFFAOYSA-M 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003139 primary aliphatic amines Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
- YPVDWEHVCUBACK-UHFFFAOYSA-N propoxycarbonyloxy propyl carbonate Chemical compound CCCOC(=O)OOC(=O)OCCC YPVDWEHVCUBACK-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 102220011102 rs139592595 Human genes 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 229960004711 sodium monofluorophosphate Drugs 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- YPPQYORGOMWNMX-UHFFFAOYSA-L sodium phosphonate pentahydrate Chemical compound [Na+].[Na+].[O-]P([O-])=O YPPQYORGOMWNMX-UHFFFAOYSA-L 0.000 description 1
- KNHRGMOGYVTHPU-UHFFFAOYSA-M sodium;2,4,6-triethylbenzenesulfinate Chemical compound [Na+].CCC1=CC(CC)=C(S([O-])=O)C(CC)=C1 KNHRGMOGYVTHPU-UHFFFAOYSA-M 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- JIYXDFNAPHIAFH-UHFFFAOYSA-N tert-butyl 3-tert-butylperoxycarbonylbenzoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC(C(=O)OC(C)(C)C)=C1 JIYXDFNAPHIAFH-UHFFFAOYSA-N 0.000 description 1
- NMOALOSNPWTWRH-UHFFFAOYSA-N tert-butyl 7,7-dimethyloctaneperoxoate Chemical compound CC(C)(C)CCCCCC(=O)OOC(C)(C)C NMOALOSNPWTWRH-UHFFFAOYSA-N 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
- 150000003510 tertiary aliphatic amines Chemical class 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ZEMGGZBWXRYJHK-UHFFFAOYSA-N thiouracil Chemical class O=C1C=CNC(=S)N1 ZEMGGZBWXRYJHK-UHFFFAOYSA-N 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 1
- ORVMIVQULIKXCP-UHFFFAOYSA-N trichloro(phenyl)silane Chemical compound Cl[Si](Cl)(Cl)C1=CC=CC=C1 ORVMIVQULIKXCP-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- XYJRNCYWTVGEEG-UHFFFAOYSA-N trimethoxy(2-methylpropyl)silane Chemical compound CO[Si](OC)(OC)CC(C)C XYJRNCYWTVGEEG-UHFFFAOYSA-N 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- AAPLIUHOKVUFCC-UHFFFAOYSA-N trimethylsilanol Chemical compound C[Si](C)(C)O AAPLIUHOKVUFCC-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000005050 vinyl trichlorosilane Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 150000003755 zirconium compounds Chemical class 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
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
- A61K6/69—Medicaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/15—Compositions characterised by their physical properties
- A61K6/16—Refractive index
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/15—Compositions characterised by their physical properties
- A61K6/17—Particle size
-
- 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
- A61K6/65—Dyes
- A61K6/66—Photochromic dyes
-
- 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
- A61K6/76—Fillers comprising silicon-containing compounds
-
- 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
- A61K6/78—Pigments
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Dental Preparations (AREA)
- Polymerisation Methods In General (AREA)
Description
D=(I20/cos20°+I70/cos70°)/(2I0) (1)
(式中、Iは試料を透過した光の光度を表し、I0、I20及びI70は試料板に垂直な方向(光の入射方向)に対する、零度、20度、70度方向の光度(光の強さ)をそれぞれ表す。)その実施例では、屈折率が1.55、平均粒子径が0.7μmのバリウムボロアルミノシリケートガラスを凝集後、焼成し、基本構成粒子の間に緩く結合を生じさせたフィラーと、平均粒子径0.2μmの球状シリカを凝集後、焼成したフィラーを、重合性単量体に添加した歯科用複合材料が開示されている。
屈折率が1.43〜1.50である無機粒子(B)、及び
屈折率が1.52〜1.58である無機粒子(C)
を含む歯科用硬化性組成物であって、前記無機粒子(B)が、平均一次粒子径が2〜50nmの無機微粒子の凝集体であり、前記無機粒子(B)の配合量が0.1〜10重量%である歯科用硬化性組成物である。
本発明で用いられる重合性単量体(A)は、その重合後の屈折率が1.52〜1.58であれば、公知の重合性単量体がなんら制限なく用いられる。重合性単量体(A)の重合後の屈折率は、無機粒子(B)との屈折率差を大きくしやすいことから1.525〜1.58が好ましく、1.53〜1.58がより好ましい。なお、重合性単量体(A)の重合後の屈折率とは、重合性単量体(A)の重合体の屈折率のことをいう。重合性単量体(A)において、重合後に所望の屈折率を得るためには、一般的に重合性単量体よりもその重合体の方が屈折率がわずかに高くなる傾向を考慮に入れつつ、1種類の重合性単量体を選択するか、屈折率の異なる数種類の重合性単量体を、適当な配合比で混合すればよい。
(I)一官能性(メタ)アクリレート
メチル(メタ)アクリレート、イソブチル(メタ)アクリレート、ベンジル(メタ)アクリレート、ラウリル(メタ)アクリレート、2,3−ジブロモプロピル(メタ)アクリレート、2−ヒドロキシエチル(メタ)アクリレート、6−ヒドロキシヘキシル(メタ)アクリレート、10−ヒドロキシデシル(メタ)アクリレート、プロピレングリコールモノ(メタ)アクリレート、グリセリンモノ(メタ)アクリレート、エリトリトールモノ(メタ)アクリレート、N−メチロール(メタ)アクリルアミド、N−ヒドロキシエチル(メタ)アクリルアミド、N−(ジヒドロキシエチル)(メタ)アクリルアミド、(メタ)アクリロイルオキシドデシルピリジニウムブロマイド、(メタ)アクリロイルオキシドデシルピリジニウムクロライド、(メタ)アクリロイルオキシヘキサデシルピリジニウムクロライド、(メタ)アクリロイルオキシデシルアンモニウムクロライド等が挙げられる。
エチレングリコールジ(メタ)アクリレート、トリエチレングリコールジ(メタ)アクリレート、プロピレングリコールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、1,6−ヘキサンジオールジ(メタ)アクリレート、1,10−デカンジオールジ(メタ)アクリレート、ビスフェノールAジグリシジル(メタ)アクリレート(2,2−ビス[4−〔3−(メタ)アクリロイルオキシ−2−ヒドロキシプロポキシ〕フェニル]プロパン、通称BisGMA)、2,2−ビス〔4−(メタ)アクリロイルオキシエトキシフェニル〕プロパン、2,2−ビス〔4−(メタ)アクリロイルオキシポリエトキシフェニル〕プロパン、1,2−ビス〔3−(メタ)アクリロイルオキシ−2−ヒドロキシプロポキシ〕エタン、ペンタエリトリトールジ(メタ)アクリレート、[2,2,4−トリメチルヘキサメチレンビス(2−カルバモイルオキシエチル)]ジメタクリレート(通称UDMA)等が挙げられる。
トリメチロールプロパントリ(メタ)アクリレート、トリメチロールエタントリ(メタ)アクリレート、テトラメチロールメタントリ(メタ)アクリレート、ペンタエリスリトールテトラ(メタ)アクリレート、ジペンタエリスリトールヘキサ(メタ)アクリレート、N,N’−(2,2,4−トリメチルヘキサメチレン)ビス〔2−(アミノカルボキシ)プロパン−1,3−ジオール〕テトラメタクリレート、1,7−ジアクリロイルオキシ−2,2,6,6−テトラアクリロイルオキシメチル−4−オキシヘプタン等が挙げられる。
本発明で用いられる無機粒子(B)は、屈折率が1.43〜1.50であり、かつ平均一次粒子径が2〜50nmの無機微粒子の凝集体であればなんら制限なく用いられる。無機粒子(B)の屈折率が1.43未満の場合には、重合性単量体(A)の重合体及び無機粒子(C)との屈折率差が大きくなりすぎるため、十分な透明性が得られず、屈折率が1.50より大きい場合には、重合性単量体(A)の重合体及び無機粒子(C)との屈折率差が小さくなりすぎるため十分な光拡散性が得られない。無機粒子(B)の屈折率は、重合性単量体(A)の重合体及び無機粒子(C)との屈折率差を大きくしやすいことから1.43〜1.48が好ましく、1.43〜1.46がより好ましい。また、重合性単量体(A)の重合後の屈折率と前記無機粒子(B)の屈折率の差{(A)−(B)}が0.05以上であることが好ましい。このとき、光拡散性が特に優れたものとなる。無機粒子(B)の平均一次粒子径は、光の屈折、散乱のサイトとなる重合性単量体(A)との界面を多くしやすいこと、及び適度な強度の凝集体を得やすいことから、5〜35nmが好ましく、7〜20nmがより好ましい。なお、無機粒子(B)の平均一次粒子径は、無機粒子(B)の電子顕微鏡写真を撮影し、無作為に選択した100個の一次粒子の粒子径の平均値として測定できる。なお、一次粒子が非球状である場合には、粒子径は、一次粒子の最長と最短の長さの算術平均をもって粒子径とする。
本発明に用いられる無機粒子(C)は、屈折率が1.52〜1.58であればなんら制限なく用いられる。屈折率が1.52より小さい場合は、重合性単量体(A)の重合体との屈折率差が大きくなりやすく、また無機粒子(B)との屈折率差が小さくなりやすいため、十分な光拡散性と透明性が得られない。屈折率が1.58より大きい場合は、重合性単量体(A)の重合体及び無機粒子(B)との屈折率差が大きくなりやすく、硬化物は白く不透明なものになり、十分な透明性が得られない。無機粒子(C)の屈折率は、重合性単量体(A)の重合体との屈折率差を小さくしやすいこと、及び無機粒子(B)との屈折率差を大きくしやすいことから1.525〜1.58が好ましく、1.53〜1.58がより好ましい。また、重合性単量体(A)の重合後の屈折率と前記無機粒子(C)の屈折率の差が、絶対値で0.03以下であることが好ましい。このとき、透明性が特に優れたものとなる。
本発明の歯科用硬化性組成物は、ペースト操作性などの向上を目的として、無機粒子(B)及び無機粒子(C)以外に、無機超微粒子(D)を含んでいてもよい。無機超微粒子(D)としては、歯科用硬化性組成物に使用される公知の無機超微粒子がなんら制限なく使用される。好ましくは、シリカ、アルミナ、チタニア、ジルコニア等の無機酸化物粒子、又はこれらからなる複合酸化物粒子、燐酸カルシウム、ハイドロキシアパタイト、フッ化イットリウム、フッ化イッテルビウム等が挙げられる。好ましくは、火炎熱分解法で作製されるシリカ、アルミナ、チタニア等の粒子であり、例えば、日本アエロジル(株)製、商品名:アエロジル、アエロキサイドAluC、アエロキサイドTiO2P25、アエロキサイドTiO2P25S、VP Zirconium Oxide 3−YSZ、VP Zirconium Oxide 3−YSZ PHが挙げられる。
製造した粉末の粒子径の測定には、レーザー回折式粒度分布測定装置(SALD−2100:島津製作所製)を用いた。分散媒には、0.2%ヘキサメタリン酸ナトリウム水溶液を用いた。なお、シリカゾル及び無機超微粒子の粒子径については、粒子の電子顕微鏡写真を撮影して求めた。
細孔容積、比表面積は、日本ベル社製BELSORP−miniIIにより、N2ガス吸着法を用いて測定した。なお、比表面積については、BET法を用いて算出した。
製造した歯科用硬化性組成物を4mmφ×4mmの穴に充填し、ペースト性状について充填操作のしやすさの観点から、以下の評価基準に従って操作性を評価した。
5:付形性に特に優れ、ペーストの延びが良く、べたつくことなく充填操作に非常に優れる
4:付形性に優れ、ペーストの延びが良く、べたつくことなく充填操作に優れる
3:付形性を有し、ペーストの延びが十分で、べたつくことなく充填操作が容易である
2:付形性、ペーストの延びのいずれかが不十分、もしくはペーストがべたつくことにより充填操作が困難である
1:付形性、ペーストの延び、べたつきのいずれも実用には不十分で、充填操作が実用的でない
なお、3、4、5が実使用レベルである。
製造した歯科用硬化性組成物のペーストをクリアフィルマジェスティ(クラレメディカル社製)の容器に充填後、25℃の恒温室内(湿度40%)で1時間静置した。静置したペーストをガラス板(5cm×5cm)の中心に盛り上げる様にして置いた後、ガラス板(5cm×5cm)を載せ、その上から1.0kgの荷重をかけ、30秒経過後のペーストの長径と短径をガラス板越しに測定し、その両者の算術平均を算出し、稠度とした。また、製造した歯科用硬化性組成物のペーストをクリアフィルマジェスティ(クラレメディカル社製)の容器に充填後、50℃の恒温器内(湿度40%)で1週間保管後、25℃の恒温室内(湿度40%)で1時間静置した後、上記と同様に稠度を測定した。25℃1時間静置後の稠度と50℃1週間静置後の稠度との差(変化量)を求めた。変化量±1.5mm以内を合格とした。
製造した歯科用硬化性組成物の硬化物からなる試験片(2mm×2mm×30mm)を作製した。試験片を37℃の水中に24時間浸漬した後、万能試験機(インストロン社製)を用いて、クロスヘッドスピードを1mm/minに設定して、支点間距離20mmで3点曲げ試験法により曲げ強さを測定した。
製造した歯科用硬化性組成物をステンレス製の金型(厚さ1mm、直径15mm)に充填した。上下面をスライドガラスで圧接し、両面から歯科技工用可視光線照射器(モリタ社製、アルファライトII)で、各2分間光照射して硬化させた。硬化物を金型から取り出した後、800番の耐水研磨紙で研磨し、この研磨面を、技工用ポリッシングボックス(KAVO社製、EWL80)を用いて3000rpmで20秒間バフ研磨した。研磨材にはポーセニーハイドン(東京歯材社製)を用いた。この面の光沢を、光沢度計(日本電色(株)製、VG−2000)を用い、鏡を100%としたときの割合で示した。測定の角度は、60度とした。光沢度75%以上が好適とされる。
製造した粉末の屈折率は、アッベ屈折計を用い、ナトリウムのD線を光源として、イオウの溶解したジヨードメタン、1−ブロモナフタレン、サリチル酸メチル、ジメチルホルムアミド、1−ペンタノール等を液体として液浸法で測定した。なお、各実施例及び比較例で用いた重合性単量体(A)の重合体の屈折率の測定には、重合性単量体(A)100重量部に対して、重合開始剤としてα−カンファーキノン0.5重量部、及び重合促進剤としてN,N−ジメチルアミノ安息香酸エチル1.0重量部を溶解させて脱泡した後、光重合させて得た硬化物を、5mm×10mm×20mmの直方体に成形したものを試験片として用いた。
歯科用硬化性組成物の硬化物の円盤状試験片(20mmφ×1.0mm)を作製した。分光測色計(ミノルタ社製、CM−3610d)を用いて、C光源測色視野2度で、試験片の背後に標準白板を置いて色度を測定した場合の明度(Lw)と、同じ試験片の背後に標準黒板を置いて色度を測定した場合の明度(Lb)を測定し、両者の差(ΔL=Lw−Lb)を算出して、透明度の指標とした。ΔLの値が大きいほど硬化物の透明度が高いことを意味する。透明度25以上が好適とされる。
製造した歯科用硬化性組成物をテフロン(登録商標)製の金型(直径30mmx厚さ0.25mm)に充填した。上下面をスライドガラスで圧接し、両面から各1分間光照射して硬化させた。硬化物を金型から取り出したのち、ヘイズメーター(日本電色工業社製NDH−5000)を用いて、全光線透過率及び濁度を測定した。濁度は下記式(2)にて求められる。全光線透過率が高く、濁度の値が高いほど硬化物の光拡散性が高いことを意味する。全光線透過率80%以上、濁度70%以上が好適とされる。
濁度(ヘイズ)=拡散透過率/全光線透過率×100 (%) (2)
ビスフェノールAジグリシジルメタクリレート(Bis−GMA)65重量部、及びトリエチレングリコールジメタクリレート35重量部に、重合開始剤としてα−カンファーキノン0.5重量部、及び重合促進剤としてN,N−ジメチルアミノ安息香酸エチル1.0重量部を溶解させて、重合性単量体A−1を調製した。該重合性単量体A−1の重合後の屈折率は1.55であった。
Bis−GMA75重量部、及びトリエチレングリコールジメタクリレート25重量部を用いた以外は製造例1と同様にして、重合性単量体A−2を調製した。該重合性単量体A−2の重合後の屈折率は1.56であった。
Bis−GMA25重量部、[2,2,4−トリメチルヘキサメチレンビス(2−カルバモイルオキシエチル)]ジメタクリレート(UDMA)40重量部、及びトリエチレングリコールジメタクリレート35重量部を用いた以外は製造例1と同様にして、重合性単量体A−3を調製した。該重合性単量体A−3の重合後の屈折率は1.52であった。
Bis−GMA30重量部、UDMA40重量部、及びトリエチレングリコールジメタクリレート30重量部を用いた以外は製造例1と同様にして、重合性単量体A−4を調製した。該重合性単量体A−4の重合後の屈折率は1.53であった。
ネオペンチルグリコールジメタクリレート80重量部、及びUDMA20重量部を用いた以外は製造例1と同様にして、重合性単量体A−5を調製した。該重合性単量体A−5の重合後の屈折率は1.50であった。
日産化学製シリカゾル、スノーテックスST−20(平均粒子径10〜20nm)1000gをホーロー製バット上に広げ、90℃に設定した熱風乾燥機中に恒量になるまで乾燥後、400℃に設定した電気炉で1時間焼成し、200gの焼成固体を得た。得られた焼成固体を振動ボールミルにて90分間粉砕後、得られた粉末100重量部に対して、20重量部のγ−メタクリロキシプロピルトリメトシキシラン(信越化学社製、KBM503)で表面処理し、平均粒子径5.6μm、屈折率1.45、比表面積154m2/g、細孔容積0.27mL/gの無機粒子B−1を得た。
日産化学製シリカゾル、スノーテックスST−OL(平均粒子径40〜50nm)を用い、振動ボールミルにて180分間粉砕した以外は、製造例6と同様にして、平均粒子径3.1μm、屈折率1.45、比表面積98m2/g、細孔容積0.13mL/gの無機粒子B−2を得た。
日産化学製シリカゾル、スノーテックスST−XS(平均粒子径4〜6nm)を用い、振動ボールミルにて60分間粉砕した以外は、製造例6と同様にして、平均粒子径14.8μm、屈折率1.45、比表面積290m2/g、細孔容積0.9mL/gの無機粒子B−3を得た。
酢酸ジルコニウム(アルドリッチ製ジルコニウムアセテート、Zr含有量15〜16%)30gに、日産化学製シリカゾル(スノーテックスST−20)225gに希硝酸を添加してpH2.5に調整したpH調整シリカゾルを徐々に滴下し、混合ゾルを得た。得られたゾルをホーロー製バットに移した後、90℃の熱風乾燥機中で乾燥した。乾燥の終了した固体を550℃に設定した電気炉に投入して、1時間熱処理を行った後、振動ボールミルにて90分間粉砕して、屈折率1.48、平均粒子径6.4μm、比表面積175m2/g、細孔容積0.2mL/gの粉末を得た。得られた粉末100重量部に対して、20重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機粒子B−4を得た。
平均粒子径1.7μmの溶融石英の粉末100重量部に対し、2重量部のγ−メタクリロイルオキシプロピルトリメトキシシランで表面処理し、屈折率1.46の無機粒子B−5を得た。
日産化学製シリカゾル、及びスノーテックスST−20(平均粒子径10〜20nm)を、入口温度200℃、内部温度80℃、エアー流量30mL/min、液流量15mL/minの条件下で、マイクロミストドライヤー「MDL−050」(藤崎電機(株))社製)を使用して、噴霧乾燥によって予備乾燥させた。得られた球状粉末を、400℃に設定した電気炉で1時間焼成し、焼成粉末を得た。得られた粉末100重量部に対して、20重量部のγ-メタクリロキシプロピルトリメトキシシラン(信越化学社製、KBM503)で表面処理し、平均粒子径4.9μm、屈折率1.45、比表面積110m2/g、細孔容積0.17mL/gの無機粒子B−6を得た。
日産化学製シリカゾル、及びスノーテックスST−20(平均粒子径10〜20nm)を蒸留水を用いて5wt%に希釈した後、入口温度200℃、内部温度80℃、エアー流量55mL/min、液流量15mL/minの条件で予備乾燥した以外は、製造例11と同様にして、平均粒子径1.5μm、屈折率1.45、比表面積106m2/g、細孔容積0.16mL/gの無機粒子B−7を得た。
バリウムガラス(ショット社製8235UF0.4、平均粒子径0.4μm)100重量部に対して、8重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機粒子C−1を得た。屈折率は1.55であった。
バリウムガラス(ショット社製8235UF0.7、平均粒子径0.7μm)100重量部に対して、4重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機粒子C−2を得た。屈折率は1.55であった。
バリウムガラス(ショット社製GM27884NF180、平均粒子径0.2μm)100重量部に対して、13重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機粒子C−3を得た。屈折率は1.53であった。
ランタンガラスセラミックス(ショット社製GM31684)を振動ボールミルにて12時間粉砕し、得られた粉末100重量部に対して、4重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、平均粒子径0.8μmの無機粒子C−4を得た。屈折率は1.58であった。
酢酸ジルコニウム(アルドリッチ製ジルコニウムアセテート、Zr含有量15〜16%)55gに、日産化学製シリカゾル(スノーテックスST−20)225gを用いた以外は、製造例9と同様にして、屈折率1.53、平均粒子径6.2μm、比表面積165m2/g、細孔容積0.22mL/gの無機粒子C−5を得た。
酢酸ジルコニウム(アルドリッチ製ジルコニウムアセテート、Zr含有量15〜16%)85gに、日産化学製シリカゾル(スノーテックス ST−20)225gを用いた以外は、製造例9と同様にして、屈折率1.55、平均粒子径6.3μm、比表面積160m2/g、細孔容積0.21mL/gの無機粒子C−6を得た。
平均粒子径が20nmの略球状超微粒子アエロジル130(日本アエロジル社製)100重量部に対して、40重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機超微粒子D−1を得た。
平均粒子径が40nmの略球状超微粒子アエロジルOX50(日本アエロジル社製)100重量部に対して、7重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機超微粒子D−2を得た。
平均粒子径が20nmの略球状超微粒子アエロキサイドAluC(日本アエロジル社製)100重量部に対して、20重量部のγ−メタクリロイルオキシプロピルトリメトキシシランで表面処理し、無機超微粒子D−3を得た。
バリウムガラス(ショット社8235、平均粒子径0.7μm、屈折率1.55)5重量部を蒸留水95重量部に分散したものをスプレードライヤー(大川原化工機製L8型)を用いて噴霧乾燥し、該バリウムガラスの凝集粉末を得た。この乾燥凝集粉末を電気炉に入れ、700℃で3時間焼成し、平均粒子径10μmの焼成凝集粒子を得た。焼成した粉末を電気炉内で室温まで冷却した後、粉末100重量部に対し、5重量部のγ−メタクリロキシプロピルトリメトキシシランで表面処理し、無機粒子(C)との比較用粒子として凝集粒子Iを得た。
平均粒子径0.2μmの球状シリカ(日本触媒製シーホスター、屈折率1.46)を粉末100重量部に対して2重量部のポリビニルアルコール(クラレ製PVA117)の存在下に、スプレードライヤー(大川原化工機製L8型)を用いて噴霧乾燥により凝集化した。この凝集粉末は、平均粒子径19μm程度のほぼ球状の粒子であった。この凝集粉末を950℃で1時間焼成した後、さらに粉末100重量部に対して2重量部のγ−メタクリロキシプロピルトリメトキシシランで処理し、無機粒子(B)との比較用粒子として凝集粒子IIを得た。
上記で製造した重合性単量体、無機粒子、及び必要に応じ無機超微粒子を、表1〜表4に示す配合量で混合練和して均一にしたものを真空脱泡し、実施例1〜32及び比較例1〜7の歯科用硬化性組成物を得た。これらの歯科用硬化性組成物の特性を前記の方法で評価した。結果を表1〜6に示す。
Claims (10)
- 重合後の屈折率が1.52〜1.58である重合性単量体(A)、
屈折率が1.43〜1.50である無機粒子(B)、及び
屈折率が1.52〜1.58である無機粒子(C)
を含む歯科用硬化性組成物であって、前記無機粒子(B)が、平均一次粒子径が2〜50nmの無機微粒子の凝集体であり、前記無機粒子(B)の配合量が0.1〜10重量%である歯科用硬化性組成物。 - 前記無機粒子(B)の平均粒子径が1.0〜20μmである請求項1に記載の歯科用硬化性組成物。
- 前記無機粒子(B)の比表面積が50〜400m2/gであり、かつ細孔容積が0.05〜1.5mL/gである請求項1に記載の歯科用硬化性組成物。
- 前記無機粒子(C)が、平均粒子径が0.1〜1.0μmの非凝集の無機粒子(C−I)を含む請求項1に記載の歯科用硬化性組成物。
- 前記無機粒子(C)が、平均粒子径が0.1〜1.0μmの非凝集の無機粒子(C−I)、及び平均粒子径が2〜50nmのシリカ系微粒子と、少なくとも1種の重金属を含む酸化物とを含む凝集体であって、平均粒子径が1〜20μmの無機粒子(C−II)を含み、無機粒子(C−I)と無機粒子(C−II)の重量比が、1:4〜4:1である請求項1に記載の歯科用硬化性組成物。
- 前記重合性単量体(A)の重合後の屈折率と前記無機粒子(C)の屈折率の差が、0.03以下である請求項1に記載の歯科用硬化性組成物。
- 前記重合性単量体(A)の重合後の屈折率と前記無機粒子(B)の屈折率の差が、0.05以上である請求項1に記載の歯科用硬化性組成物。
- 前記重合性単量体(A)を8〜40重量%、前記無機粒子(B)を0.1〜10重量%、及び前記無機粒子(C)を59.9〜91.9重量%含む請求項1に記載の歯科用硬化性組成物。
- さらに平均粒子径が5〜50nmの無機超微粒子(D)を1〜10重量%含む請求項1に記載の歯科用硬化性組成物。
- 請求項1に記載の歯科用硬化性組成物を用いたコンポジットレジン。
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| ES2593877T3 (es) | 2016-12-13 |
| WO2011074222A1 (ja) | 2011-06-23 |
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