Focused laser ablation by single laser pulses at varying angles of incidence is studied in two materials of interest: a solgel ~Ormocer 4! and a polymer ~SU8!. For a range of angles ~up to 70° from normal!, and for low-energy ~,20 mJ!, 40 ns pulses at 266 nm wavelength, the ablation depth along the direction of the incident laser beam is found to be independent of the angle of incidence. This a...

This work presents the latest results on direct laser writing of polymeric materials for tissue engineering applications. A femtosecond Yb:KGW laser (300 fs, 200 kHz, 515 nm) was used as a light source for non-linear lithography. Fabrication was implemented in various photosensitive polymeric materials, such as: hybrid organic-inorganic sol-gel based on silicon-zirconium oxides, commercial ORMO...

Adresa za dopisivanje Dr. Şeyda Hergüner Siso, Cumhuriyet University School of Dentistry Department of Restorative Dentistry Sivas, Turska Tel: + 90 346 2191010/2701 Fax: + 90 346 2191237 [email protected] Sažetak Svrha: Zadatak ovoga istraživanja bio je odrediti fi zikalna svojstva triju različitih vrsta kompozitnih smola: Point 4 (mikrohibrid), Solitaire 2 (stlačiv) i Defi nite (ormocer). ...

Low-shrinkage resin composites are in the focus of research in posterior resin composite restoratives. The aim of the study was to examine the polymerization shrinkage stress of new composites (Venus Diamond/ Heraeus Kulzer; SDR/DENTSPLY) and an experimental low-shrinkage resin composite (Ormocer/VOCO) in comparison to established low-shrinkage resin composites (Filtek Silorane/ 3M ESPE; els/Sa...

To evaluate and compare the impact of preheating on repair bond strength Methacrylate Ormocerbased composite.