Average bond strength of second generation dentin bonding agents:
Correct Answer: 2-5 MPA
Description: 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
Category:
Dental
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