| Summary: | 碩士 === 中山醫學大學 === 牙醫學系碩士班 === 98 === As microbial plaques have been proven to be the primary etiological agent of inflammatory peri-implantitis, the major purpose of peri-implantitis therapy has been to eliminate all bacterial deposits on the implant surface. About tranditional treatment regimens, there were some disadvantages existing when using to treat peri-implantitis. The aim of this study was to evaluate the bactericidal effects of different dental laser systems on treating titanium discs or implants surfaces.
In preliminary experiment, there were more MG63 cells attached on implants treated with Er:YAG laser and diode laser than untreated ones. But the result of the group treated with Er:YAG laser was better than the one treated with diode laser.
On titanium discs surface, whether treated by Er:YAG laser, photodynamic therapy or combined Er:YAG laser and photodynamic therapy, could significantly eliminate most of the bacteria. The least counts of residual bacterial was the group which treated with combined Er:YAG laser and photodynamic therapy, and the most counts of residual bacterial was the group which treated with Er:YAG laser.
On titanium implant surface, the results were same with which on titanium disc surface. There were statistically significant differences between the three treatment groups. We concluded that combined Er:YAG laser and photodynamic therapy may be a better treatment regimen for peri-implantitis.
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