SEM micrographs of dentin surface areas before and after treatment with Gluma desensitizer.

Figure 5a: There are several open dentin tubules on the sensitive dentin (marked with arrows) before treatment (1,010×, bar=50 μm). Figure 5b: Most dentin tubules are occluded immediately after application of Gluma desensitizer (1,010×, bar=50 μm). Figure 5c: Some dentinal tubules are re-opened one month after Gluma desensitizer treatment (tiny holes marked with arrows) (1,020×, bar=50 μm).