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Studies on calcium phosphate precipitation: Effects of metal ions used in dental materials

✍ Scribed by Okamoto, Y. ;Hidaka, S.

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
724 KB
Volume
28
Category
Article
ISSN
0021-9304

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✦ Synopsis

Abstract

The effects of 26 metal ions, of which 23 are used in dental materials, on the conversion of amorphous calcium phosphate (ACP) to hydroxyapatite (HAP) in vitro were studied. From the effects on both the rate of HAP transformation and induction time, effects of metal ions were classified into three types; inhibitory (in the order: nickel, tin, cobalt, manganese, copper, zinc, gallium, thallium, molybdenum, cadmium, antimony, magnesium, and mercury); ineffective (cesium, titanium, chromium, iron [ferrous], iridium, palladium, platinum, silver, gold, aluminum, and lead); and stimulatory (iron [ferric] and indium). These results suggest that metal ions used in dental materials may modify the precipitation of oral calcium phosphate. Β© 1994 John Wiley & Sons, Inc.

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