Peri-implant disease represents a collective term to describe inflammatory reactions in the tissues surrounding an implant. Results from clinical and experimental studies revealed that the tissue response to plaque formation at teeth and dental implants is similar. However, while peri-implantitis and periodontitis have many clinical features in common, structural differences in supporting tissues between implants and teeth may influence host response to infection. Here a SEM evaluation was reported to evaluate quality of bacteria and the pertinent literature discussed. Ten implants had to be removed for progressive marginal bone loss during follow-up period. The implants surface was examined under a Scanning Electron Microscopy (SEM LEO, Cambridge, England) with tilt angles ranging from 10 to 45 degrees. SEM evaluations were performed by three independent observers who expressed an estimate of bacterial amount of three different areas: supra-crestal, sub-crestal and screw threads. Plaque formation and gingival inflammation were observed into the junctional epithelium-to-implant contacts, with also active or previous bone resorption. In peri-implantitis the implant surface facilities the adherence of the biofilm bacteria and complicates its elimination. Most of chemical and mechanical devices are not able to completely remove bacteria from implant surface especially if they are enclosed in calcified areas. Bacteria determine an inflammatory process which determines bone resorption around fixtures and thus implant mobility occurs. Identification of bacteria types is of paramount importance in order to perform specific therapy to eliminate peri-implant colonies.
SEM EVALUATION OF 10 INFECTED IMPLANTS RETRIEVED FROM MAN
CARINCI, Francesco;ZOLLINO, Ilaria;D. LAURITANO
2012
Abstract
Peri-implant disease represents a collective term to describe inflammatory reactions in the tissues surrounding an implant. Results from clinical and experimental studies revealed that the tissue response to plaque formation at teeth and dental implants is similar. However, while peri-implantitis and periodontitis have many clinical features in common, structural differences in supporting tissues between implants and teeth may influence host response to infection. Here a SEM evaluation was reported to evaluate quality of bacteria and the pertinent literature discussed. Ten implants had to be removed for progressive marginal bone loss during follow-up period. The implants surface was examined under a Scanning Electron Microscopy (SEM LEO, Cambridge, England) with tilt angles ranging from 10 to 45 degrees. SEM evaluations were performed by three independent observers who expressed an estimate of bacterial amount of three different areas: supra-crestal, sub-crestal and screw threads. Plaque formation and gingival inflammation were observed into the junctional epithelium-to-implant contacts, with also active or previous bone resorption. In peri-implantitis the implant surface facilities the adherence of the biofilm bacteria and complicates its elimination. Most of chemical and mechanical devices are not able to completely remove bacteria from implant surface especially if they are enclosed in calcified areas. Bacteria determine an inflammatory process which determines bone resorption around fixtures and thus implant mobility occurs. Identification of bacteria types is of paramount importance in order to perform specific therapy to eliminate peri-implant colonies.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
