. 2006 Apr;14(2):88–92. doi: 10.1590/S1678-77572006000200005

TABLE 1. Analysis of the enamel blocks according to groups/treatments (means ± sd; n=12).

Treatments	Analysis
Treatments	SMH	SMH₁	%SML	%∆S
Control	^A338.2 ± 1.8^a	^B121.8 ±20.1^a	-64.0 ± 4.9^a	-18.7 ± 2.7^a
Varnish	^A339.8 ± 2.5^a	^B186.2 ±16.9^b	-45.2 ± 4.1^b	-7.7 ± 3.1^b
Diamine	^A337.2 ± 3.2^a	^B158.0 ±10.7^c	-53.1 ± 1.8^c	-17.3 ± 2.3^a

Mean values followed by different letters are statistically different at 5%. Capital letters show difference between SMH and SMH₁, and lower case letters among groups. SMH: initial surface microhardness. SMH₁: surface microhardness after pH-cycling. %SML: percentage of surface microhardness loss. %∆Z: percentage change of integrated mineral loss.