Potassium ion release from a glass ionomer cement matrix

Citation
Ja. Williams et al., Potassium ion release from a glass ionomer cement matrix, BIOMATERIAL, 22(6), 2001, pp. 547-554
Citations number
14
Categorie Soggetti
Multidisciplinary
Journal title
BIOMATERIALS
ISSN journal
01429612 → ACNP
Volume
22
Issue
6
Year of publication
2001
Pages
547 - 554
Database
ISI
SICI code
0142-9612(200103)22:6<547:PIRFAG>2.0.ZU;2-C
Abstract
Glass ionomer was mixed with water alone and with water containing two leve ls of potassium ion, added as potassium chloride. The dimensions of the spe cimens varied; discs, cylinders and a rectangular bar were used. Release of potassium was measured until it ceased. A little potassium was released fr om cement mixed with water but could be accounted for by traces present in the glass. Release took 2 months for the lower level and 1.5 years for the higher level of addition. For some specimen groups not all the potassium ad ded was subsequently released. Potassium release tended towards the pattern found for fluoride release naturally occurring from glass ionomer cements in being proportional to t(1/2) but was less certain at the lower addition. Release was not related to the dimensions of the sample as has been shown for release of intrinsic fluoride. (C) 2001 Elsevier Science Ltd. All right s reserved.