Permeability effects of two dentin adhesive systems.
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.
Hansen
S E
SE
Department of Operative Dentistry, University of Iowa, Iowa City.
Swift
E J
EJ
Krell
K V
KV
D000134:Acid Etching, Dental; D000704:Analysis of Variance; D003806:Dentin Permeability / Q000187:drug effects*; D017220:Dentin-Bonding Agents / Q000494:pharmacology*; D006801:Humans; D008689:Methacrylates / Q000494:pharmacology; D009566:Nitrates / Q000494:pharmacology; D017942:Nitric Acid; D010070:Oxalates / Q000494:pharmacology; D011140:Polyurethanes / Q000494:pharmacology; D016369:Smear Layer
D017220:Dentin-Bonding Agents; D008689:Methacrylates; D009566:Nitrates; D010070:Oxalates; D011140:Polyurethanes; C061140:Tenure Dentin Conditioner; C070604:XR Bond; D017942:Nitric Acid