Figure 1

Polarization light micrographs of experimental lesions incubated with different toothpaste slurries. The arrow marks the border between the cervical control window and the occlusal experimental window. a) = incubation with Elmex Anticaries. The occlusal window shows single porosities in the body of the lesion; b) = incubation with Elmex Sensitive. The occlusal window shows an inhomogehous body of the lesion; c) = incubation with Colgate GRF. The occlusal window shows a homogeneous body of the lesion; d) = incubation with Blend-a-med complete. No differences are seen between the occlusal and cervical window.