In Vitro Longevity of Bonding Properties of Universal Adhesives to Dentin

Clinical RelevanceClinicians should opt to use methacryloyloxydecyl dihydrogen phosphate–containinguniversal adhesives to improve the bonding longevity of dentin interfaces.SUMMARYPurpose: To evaluate the immediate and 6-month resin-dentin bond strength (lTBS) andnanoleakage (NL) of universal adhesives thatcontain or do not contain methacryloyloxy-decyl dihydrogen phosphate (MDP) and areused in the etch-and-rinse and self-etch strat-egies.Methods and Materials: Forty caries-free ex-tracted third molars were divided into eightgroups for lTBS (n=5). The groups werebonded with the Clearfil SE Bond (CSE) andAdper Single Bond 2 (SB) as controls; PeakUniversal, self-etch (PkSe) and etch-and rinse(PkEr); Scotchbond Universal Adhesive, self-etch (ScSe) and etch-and-rinse (ScEr); and AllBond Universal, self-etch (AlSe) and etch-and-rinse (AlEr). After composite restorations,specimens were longitudinally sectioned toobtain resin-dentin bonded sticks (0.8 mm