Abstract：
:This study aimed to investigate certain processes of fluoride production which enable glass ionomer cements to leach fluoride. Two fluoroaluminosilicate glasses, G338 and LG26 were used. The free and total fluoride which could be dissolved from the glasses was measured, before and after acetic acid washing. Both glasses contained appreciable amounts of soluble fluoride prior to any acid treatment. The latter process reduced the amount to some 75% of the original levels. Replacing the customary polymeric acid with propionic acid produced a cement which disintegrated in water allowing the amount of fluoride generated by the cement forming process to be measured. Cement production increased soluble fluoride by a further 3%. Both glasses behaved similarly when undergoing the various processes. G338 produced significantly greater quantities of fluoride, of the order of 10, compared with LG26 although containing only three times the amount of fluoride in the glass formula. A substantial proportion, over half, of the total fluoride was complexed especially after contact with cement and when G338 was used. During the period of the experiment, 21 days, total fluoride release did not seem to depend on the square root of time.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Williams JA,Billington RW,Pearson GJdoi
10.1016/s0142-9612(01)00352-0keywords:
subject
Has Abstractpub_date
2002-05-01 00:00:00pages
2191-200issue
10eissn
0142-9612issn
1878-5905pii
S0142-9612(01)00352-0journal_volume
23pub_type
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