Surface characterisation and bonding of Y-TZP following non-thermal plasma treatment.

Objectives: (1) To chemically characterise Y-TZP surface via X-ray photoelectron spectroscopy (XPS) and evaluate the surface energy levels (SE) after non-thermal plasma (NTP). (2) To test the microtensile bond strength (MTBS) of Y-TZP bonded to cured composite disks, after a combination of different surface conditioning methods.

Methods: Twenty-four Y-TZP discs (13.