Abstract：
:The objective of this study was to investigate the effect of repeated applications of a neutral NaF solution on the surface roughness of four conventional glass ionomer cements (GIC) (ChemFil Superior encapsulated, Fuji Cap II, Ketac-Fil and Hi Dense), three resin-modified (RM-) GIC (Fuji II LC encapsulated, Photac-Fil and Vitremer) and one polyacid-modified composite resin (PAM-C) (Dyract). Matured specimens were four times alternately eluted in water and exposed to 2% neutral NaF aqueous solutions for 1h. Control specimens were only subjected to elution in water for the same time period. After the treatment the surface roughness R(a) was determined using non-contact surface profilometry and selected samples were examined with SEM. Except for the PAM-C, R(a) increased drastically for the fluoride-treated samples compared to water-stored samples, the effect being most pronounced for the GIC. Surface roughening apparently is caused by a progressive disintegration or chemical erosion of the polysalt matrix of (RM-)GIC.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
De Witte AM,De Maeyer EA,Verbeeck RMdoi
10.1016/s0142-9612(02)00617-8keywords:
subject
Has Abstractpub_date
2003-05-01 00:00:00pages
1995-2000issue
11eissn
0142-9612issn
1878-5905pii
S0142961202006178journal_volume
24pub_type
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