Release of elements from retrieved maxillofacial plates and screws.

摘要: Vitallium appliances and surrounding tissues were investigated to evaluate the release accumulation of elements. Four microplates, sixteen screws removed from three patients presenting inflammation 4 6 years after surgery submitted SEM X-ray microprobe analysis. Histology was performed on paraffin or PMMA sections tissues. A continuous elements metallic into soft observed. Cobalt, chromium, nickel detected in boney close proximity appliance. Aluminium, as a component screw coatings, accumulated tissues, remarkable amount aluminium dense lamella lamellar bone. The results suggest that coatings containing should be avoided time these are allowed remain shortened. Further studies element fate bone warranted.