[Preparation of hard crown and bridge resin without PMMA powder (III) (author's transl)]. 1980

S Suzuki, and K Nagata, and N Nakabayashi, and E Masuhara

We have been studying hard crown and bridge resins. Mixtures of several polyfunctional monomers and a composite filler finely pulverized, prepared by polymerization of trimethylolpropane trimethacrylate in the presence of hydrophobic colloidal silica, were polymerized and their mechanical properties were studied. They were excellent and a sample from 2.6 E.UDMA comonomer was the best among them. The new filler possessed better affinity with matrices than composite fillers reported previously, presumably due to the reactivity with matrices. Introduction of this new filler into the hard crown and bridge resin preparation must improved the resins remarkably.

UI MeSH Term Description Entries
D008768 Methylmethacrylates The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.
D003442 Crowns A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin. Dental Crowns,Crown, Dental,Crowns, Dental,Dental Crown,Crown
D003829 Denture, Partial A denture replacing one or more (but not all) natural teeth. It is supported and retained by underlying tissue and some or all of the remaining teeth. Dental Bridgework,Bridgework, Dental,Bridgeworks, Dental,Dental Bridgeworks,Dentures, Partial,Partial Denture,Partial Dentures
D006245 Hardness Tests A test to determine the relative HARDNESS of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). Hardness Test,Test, Hardness,Tests, Hardness
D012822 Silicon Dioxide Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid. Silica,Aerosil,Aerosil 380,Cristobalite,Quso G-32,Quso G32,Tridymite,380, Aerosil,Dioxide, Silicon,G32, Quso,Quso G 32

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