In this study, retentive forces were compared between telescopic crowns (TSC) made with poly(ether ether ketone) (PEEK) using computer-aided design and manufacturing type 4 gold alloy the conventional method. The of TSCs evaluated by performing a pull-out test primary secondary crowns. Initial force was approximately 12 N for both PEEK TSCs. TSC 6.5 after 10,000 cycles insertion removal. reduct...

Poly-ether-ether-ketone (PEEK) is a widely used and versatile polymer. Here, we use ellipsometry to determine the wavelength-dependent optical properties of PEEK before after surface modified by plasma immersion ion implantation (PIII), technique that renders hydrophilic bio-active. Lorentz Gaussian oscillator models are fit data for extraction constants dielectric function. The effect PIII, ev...

High-temperature laser sintering (HT-LS) is a very promising additive manufacturing process for the production of parts complex geometry highly demanding applications. Poly(aryl ether ketone) polymers such as poly(ether ketone), and ketone (PEKK) have attracted increasing interest during last decade use in HT-LS. Among them, PEKK offers advantage exhibiting tunable melting temperature crystalli...

In this report, the bromination of poly(ether ether ketone) (PEEK) using mild reagent N-bromosuccinimide (NBS) is explored to generate controlled random and blocky microstructures. Bromination proceeded quantitatively in both solution state semicrystalline gel-state, degrees between 25 175 mol% were obtained for BrPEEK. Spectroscopic evidence revealed a higher prevalence unfunctionalized repeat...