Resistencia de união a tração de sistemas adesivos sobre dentina aos 10 minutos e 24 horas pos-polimerização

TL;DRAbstract

The purpose of this study was to evaluate the tensile bond strength of conventional dentin adhesive systems and self-etching primers at 10 minute and 24 hours.Flat dentin surfaces were prepared on labial surface of 120 bovine lower incisor teeth and a 4-mm-diameter bonding area was demarcated on each prepared surface with adhesive vinyl tape.In the following groups were applied the dentin systems and the composite resin Z 1 00: Groups A and B -ScotchBond Multi-Purpose Plus and Z 100; Groups C and D-Single Bond; Groups E and F-Ciearfil Liner Bond 2V and Groups G and H-Clearfil SE Bond.In the groups A, B, C and D ali dentin was etched with 35% phosphoric acid, washed and the excess of water was removed.A resin composite rod was positioned on the bonding area and cured for 20 s at the three points of the interface to perform the tensile bond strength (TBS).The TBS was tested at 10 minute to groups A, C, E and G.The groups B, D, F and H were stored in distilled water at 3rC and the TBS was

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