Table 3: Means (%) of hydraulic conductance (±SD) for each gels type as an after acid challenge as well as minimum and maximum (100%) hydraulic conductance and Tukey’s test compared.

Hydraulic conductance Groups Conditions values % L min−1 140 cm H2O−1 Control group (base gel) Smear layer-covered dentin 100.0 37% PA etched dentin 9.2 Treatment with control gel 73.8 Posttreatment 6% CA etched 1.90 Fluoride gel group Smear layer-covered dentin 100.0 37% PA etched dentin 10.5 Treatment with F gel 89.3 Posttreatment 6% CA etched 90.8 Euclea natalensis gel group Smear layer-covered dentin 100.0 37% PA etched dentin 20.1 Treatment with EN gel 61.2 Posttreatment 6% CA etched 66.0

*Different lower case letters in the same column indicate statistical significance between the gels. Different upper case letters in the same column indicate statistical significance among the different conditions ().