Anything is better than nothing.　　枯れ木も山の賑わい

The mixture of ingredients (or "components") 1 and 2 undergo (self-hardening in the dark due to) an ionic acid-base reaction (or "acid-base ionic reaction).

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グラスアイオノマー反応
グラスアイオノマ-セメントの硬化反応のこと。粉末中の塩基成分と液中の酸との間におこる酸-塩基反応である。セメント反応とも呼ばれ、レジンのラジカル反応と分けて理解する必要がある。
http://www.oralstudio.net/stepup/jisho/sakuin/E382AF/02011_0...

There are currently two major classes of glass ionomers. The first class, known as conventional glass ionomers, generally contains as main ingredients a homopolymer or copolymer of an .alpha.,.beta.-unsaturated carboxylic acid, a fluoroaluminosilicate ("FAS") glass, water, and optionally a chelating agent such as tartaric acid. These conventional glass ionomers typically are supplied in powder/liquid formulations that are mixed just before use. The mixture undergoes self-hardening in the dark due to an ionic acid-base reaction between the acidic repeating units of the polycarboxylic acid and cations leached from the basic glass.
http://www.freshpatents.com/Dental-compositions-containing-n...
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