<prompt> Which generation of bonding system combines the primer and bonding agent into a single step?FourthFifthSixthSeventh  <response>: FIFTH GENERATION To decrease the number of steps PRIME AND BOND WERE COMBINED. ETCH PRIMEBOND. Called self priming adhesive. Bond strength 17-24 MPA. Less number of steps less post operative sensitivity. Eg: Prime and bond NT, Adper single bond, Opti bond solo.Reference- Sturdevant 6th ed 