[Scanning electron microscopy and microprobe studies of fillings prepared with dentin glue]

The dentin wall of a cavity of class V prepared in vivo was, after a cavity cleaning with phosphorous acid, covered with a composite filling. The filling material penetrated into the dentin tubules. However, it did not adhere to the tubule wall. If the dentin wall of the cavity was cleaned according to factory prescriptions, the filling material did not reach the dentin. Only the preparation debris were impregnated by it.