Leonardo Gonçalves Cunha1 Roberta Caroline Bruschi Alonso1 Mario Alexandre Coelho Sinhoreti2 Mario Fernando de Goes3 Lourenço Correr Sobrinho3 1 Graduate Students – Department of Restorative Dentistry – Piracicaba Dental School – SP – Brazil 2 DDS, MS, Associate Professor Department of Restorative Dentistry – Piracicaba Dental School – SP – Brazil 3 DDS, MS, PhD Associate Professors Department ...

This in vitro study determined the surface roughness (Ra) and absolute gloss (AG) values for 2 resin composites: a microhybrid and a microfill. Eight groups (n = 4) of each resin composite were prepared, along with 4 controls (Mylar strip) for the 2 resin composites. After finishing with a medium polishing disc, the specimens from each resin composite material were subjected to 7 polishing proc...

The results of the investigations into the technological formation of new wear-resistant polymer composites based on polytetrafluoroethylene (PTFE) filled with disperse synthetic and natural compounds are presented. The efficiency of using PTFE composites reinforced with carbon fibers depends on many factors, which influence the significant improvement of physicomechanical characteristics. The ...

A study was carried out to characterize Ni-Co-PVC and Ni-Cu-PVC composite materials prepared by mechanical alloying technique (MAT) using SEM, EDS and electrochemical test. Composite materials were prepared by mixing together 95% of metal powder (Ni+Co or Ni+Cu) with 5% PVC. PVC was used as a binder and tetrahydrofuran (THF) was used as a solvent in composite material preparation. Based on the ...