Ultrasonic activation was associated with higher BS values, deeper intratubular penetration and greater interfacial adaptation to root dentine than sonic activation and no activation techniques, AH Plus had higher BS values than MTA Fillapex irrespective of the type of activation.

Radiation was associated with a decrease in the push-out bond strength and with lower resin cement/root dentine interface adaptation. Self-adhesive resin cement was a better alternative for fibre post cementation in teeth subjected to radiation therapy. The bond strength decreased after 6 months.

The main factors associated with self-perceived oral health in both groups were excellent self-perceived appearance, followed by positive self-perceived mastication. The third associated factor was reporting no need for dental treatment in dentate individuals, and self-perceived speech in edentate ones.

Bond strength values of gutta-percha and sealer were affected by canal shape. Higher percentage of gutta-percha-filled area resulted in higher bond strength to dentine.

The material used for root filling and the voxel resolution can influence the presence of streaking artifacts observed in CBCT images.