Surface analysis of failed oral titanium implants after irradiated with ercr:ysgg 2780 laser

Peri-implantitis may occur because of biologic or mechanical factors. They can be treated by a variety of methods. Aim of the present study was to evaluate implant surface of failed oral titanium implants after irradiated with ErCR:YSGG 2780 laser. This study comprised 45 implants removed for peri-implantitis reasons. The implants were divided into two groups: group I (Control): 22 non-irradiated implants, group II (Test): 23 irradiated implants. Immediately after extraction, the second group's implants were irradiated with an ErCR: YSGG 2780 laser (Waterlase MD Turbo-Biolase). Control and test implants were processed with SEM analysis. At higher magnification in the coronal portion no bacteria were found on test implant surface. At low magnification, there was a variation in the number of fields of deposit among the non-irradiated implants and different portions on the same implants. At higher magnification, deposits were identified as connective tissue in apical portion and bacteria or others, in coronal portion of control implants. In conclusion, ErCR:YSGG 2780 laser is recommended to be used in implant surface detoxification without any surface alteration, using the experimental conditions.