| 摘要 |
PCT No. PCT/GB92/01236 Sec. 371 Date Nov. 29, 1993 Sec. 102(e) Date Nov. 29, 1993 PCT Filed Jul. 8, 1992 PCT Pub. No. WO93/00879 PCT Pub. Date Jan. 21, 1993.Glassy coatings are made by curing in situ a coating of a sol gel of tetraethoxysilicon, water, alcohol, and the alkoxides of: Al, Ti and Na; or of Na and Zr. The coating may be applied to teeth as a dental fissure sealant or varnish to protect restorations, or (if filled) as an inherently coloured cosmetic coating, or as a prophylactic coating.
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