Average bond strength of second generation dentin bonding agents:
High-Yield Explanation
SECOND GEN - Contains halophosphorus esters of unfilled resins.
Mechanism of bonding Is by ionic bond to calcium by chlorophosphate groups.
Eg: scotchbond, bondlite.
Disadvantages:
Again poor bond strength 2-5 MPA.
Hydrolysis of bond.
Bonds to smear layer.
Reference-Sturdevant 6th ed Pg: 116