According to this review , the 3-step adhesive systems were the best performing and still are the gold st and ard for the cementing of indirect restorations .
In addition , it can be concluded that self-etched adhesive systems reduce the time spent in clinical practice , however at the interface level they behave as permeable membranes more susceptible to degradation
New technologies are changing the therapeutical options to do indirect restorations and new adhesive systems are continuously introduced to be used by clinicians .
Different interactions between restorations , adhesive systems components , enamel and dentin require having criteria based on the selection of the adhesive system , ensuring the longevity of the restorations and the preservation of the biological remnant .
The adhesion force to the dental tissue is one of the indicatives of the behavior of the adhesive systems and influences the behavior of the treatments with direct and indirect restorations .
The objective of this search was to find the adhesive systems with the best results in terms of the adhesion strength of indirect restorations  on the dental tissues .
In-vitro evaluation of bond strength of four self-etching cements.
Indirect restorations need to be attached with adhesive luting agents to prevent them from becoming dislodged and provide adequate marginal sealing . The aim of this study was to evaluate bond strength to dentin of self-etching resin cements . MATERIAL S AND METHODS 75 flat dentin surfaces were r and omly distributed among 5 groups , according to cements used ; Group 1 : RelyxU100 ( 3M/ESPE ) , Group 2 : Bis Cem ( Bisco ) , Group 3 : Max Cem ( Kerr ) , Group 4 : SeT PP ( SDI ) and Group 5 : Relyx ARC ( 3M/ESPE ) , control . Ceramic test cylinders ( IPS Empress 2 / Ivoclar-Vivadent ) 4.1 mm across were prepared and attached to the dentin surfaces using the different cements . A constant 25N load was applied for 1 minute and they were light-polymerized . Following storage for 24 hours at 100 % humidity and 37 ° C , the specimens were tested for bond strength under shear strain in an Instron testing machine at a crosshead speed of 1 mm/minute ; at 7 , 14 and 21 days . Data were analyzed by ANOVA and Tukey 's test . There were significant differences between material s ( p < 0.0001 ) , but not between times or material /time interaction . RelyXARC ( Control Group ) had the highest bond strength ( 15.52 MPa ) . Among the self-etching cements , the best behavior was found for Relyx U100 ( 10.80MPa ) , followed by BisCem ( 6.36 MPa ) , MaxCem ( 5.45 MPa ) and SeTPP ( 3.17 MPa ) . The bond strength of the self-adhesive cements evaluated was lower than that for resin cements which require previous treatment of the dental substrate ( control group ) . This should be taken into account during clinical selection , in particular for tooth preparations with poor retention
According to this review , the 3-step adhesive systems were the best performing and still are the gold st and ard for the cementing of indirect restorations .
In addition , it can be concluded that self-etched adhesive systems reduce the time spent in clinical practice , however at the interface level they behave as permeable membranes more susceptible to degradation
New technologies are changing the therapeutical options to do indirect restorations and new adhesive systems are continuously introduced to be used by clinicians .
Different interactions between restorations , adhesive systems components , enamel and dentin require having criteria based on the selection of the adhesive system , ensuring the longevity of the restorations and the preservation of the biological remnant .
The adhesion force to the dental tissue is one of the indicatives of the behavior of the adhesive systems and influences the behavior of the treatments with direct and indirect restorations .
The objective of this search was to find the adhesive systems with the best results in terms of the adhesion strength of indirect restorations  on the dental tissues .