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Permeability effects of two dentin adhesive systems
S E Hansen1, E J Swift, K V Krell
1Department of Operative Dentistry, University of Iowa, Iowa City.
Abstract:
This in vitro study evaluated the effects of two dentin adhesive systems on dentin permeability. The XR-Bonding System modifies the smear layer but does not open dentinal tubules. The Kanca or "total-etch" technique (phosphoric acid, Tenure A and B, Scotchbond 2 Adhesive) removes the smear layer and opens dentinal tubules. Despite these differences, both systems reduced dentin permeability in a similar manner. XR-Bond decreased permeability to 52% of the smear layer value, while total etching reduced permeability to 66% of that value.
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