C. Ganss et al., Effectiveness of two fluoridation measures on erosion progression in humanenamel and dentine in vitro, CARIES RES, 35(5), 2001, pp. 325-330
The aim of the present study was to evaluate the effect of fluoride on the
progression of erosive demineralisation in human enamel and dentine using a
cyclic de- and remineralisation model in vitro. The mineral content expres
sed in micrometres was determined daily by longitudinal microradiography (L
MR) and presented as cumulative mineral loss over 5 days. For erosive demin
eralisation, all samples were immersed in 0.05 M citric acid (pH 2.3) for 6
x 10 min/day and stored in a remineralisation solution. Fluoridation measu
res were performed as follows: group 1: control, no fluoridation; group 2:
toothpaste fluoridation 3 x 5 min/daily (NaF, 0.15% F-); group 3: toothpast
e fluoridation as group 2 and additionally application of a fluoride mouthr
inse (Olaflur/SnF2, 0.025%F-) 3 x 5 min/daily and on days 1 and 3 gel fluor
idation (Olaflur/NaF; 1.25% F-) for 1 x 5 min. After the first experimental
day, no significant differences were found between the groups. However, af
ter 5 days the erosive mineral loss values for enamel were 147.5 +/- 18.7 m
um in the control group, 128.1 +/- 15.0 mum in group 2 (p less than or equa
l to0.05) and 116.1 +/- 12.4 mum in group 3 (p less than or equal to0.001).
In dentine, the respective values were 136.7 +/- 16.4, 111.8 +/- 26.9 (p l
ess than or equal to0.001) and 60.3 +/- 17.8 (P less than or equal to0.001)
. The intensive fluoridation significantly reduced erosion progression in e
namel but had a more pronounced effect on dentine. The results suggest that
subjects with erosive lesions should use an intensive fluoridation measure
. Copyright (C) 2001 S. Karger AG, Basel.