However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .
The effect of load cycling on the nanoleakage of dentin bonding systems.
OBJECTIVES The purpose of this study was to evaluate the effects of load cycling on nanoleakage of occlusal flat surface or cervical restorations bonded with three self-etching priming systems and a single bottle system . METHODS The dentin bonding systems used in this study were Clearfil SE Bond , Unifil Bond , Prompt L-Pop and Single Bond .  Flat occlusal dentin surfaces and cervical cavities from extracted human molars were bonded with one of the dentin bonding systems . After load cycling of 90N for 5000 cycles , sample s were immersed in a 50 % w/v solution of silver nitrate for 24h , and exposed to photodeveloping solution for 8h . Specimens were sectioned , mounted on stubs , carbon-coated and observed in a Field Emission-SEM using backscattered electron mode . One-way ANOVA was used for statistical analysis of the leakage scores . RESULTS FE-SEM images showed that sample s subjected to load cycling had leakage patterns similar to non-load-cycled sample s for all dentin bonding systems . Load cycling did not affect leakage lengths in any system . Prompt L-Pop had greater silver deposition and leakage score than the other systems . SIGNIFICANCE The dentin bonding systems tested were unable to prevent nanoleakage , and the extent of nanoleakage was not increased by load cycling
However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .