**3. Conclusion**

Implant micro- and macro-design could be possible risk factors in peri-implantits onset or progression. Various implant surfaces may lead to peri-implantitis. In addition, choosing the right decontamination method could be influenced by the very implant surface. Mechanical methods coupled with PDT or a chemical method such as CHX and H2O2 may be effective in peri-implantitis treatment. Antibiotics administration in peri-implant treatment, on the other hand, must be taken with caution. Laser decontamination of implant surfaces is indicated provided that all parameters necessary for successful treatment are respected.
