Retention of zirconia crowns to Ti-base abutments: effect of luting protocol, abutment treatment and autoclave sterilization.

Purpose: To evaluate the influence of resin cement type, surface pretreatment and autoclave sterilization on retention Y-TZP crowns to Ti-base abutments. Methods: were designed milled fit Crowns cemented using either a conventional (conventional) with universal adhesive or self-adhesive (self-adhesive), both following no (No) abutment sandblasting (SB) (n=20/group). Half samples subjected in-office sterilization. Pullout testing was performed in machine at speed 1 mm/min until crown displacement. Data statistically evaluated through linear mixed model post hoc comparisons by LSD test. Results: data as function type demonstrated higher for relative (p < 0.001). favored retentiveness over No Sterilized exhibited pullout values than non-sterile (p=0.036). All two- three-factor interaction analyses corroborated superior strength compared (all, p 0.011), well as, SB 0.024). While maximized bond when (data collapsed pretreatment, 0.050) 0.013), significant difference observed (p=0.280) (p=0.878) groups. Conclusions: Conventional and/or increased retentiveness, Autoclaving used.