Aim: For several years we have known the therapeutic successes of antimicrobial photodynamic therapy (aPDT) Helbo as adjunctive therapy minimally invasive. Thanks to this therapy is possible to obtain an effective reduction of bacteria normally 2-4 decimal powers in the areas reached by a special dye and then exposed to a laser light of low intensity. The aim of our study was to evaluate the efficacy of antimicrobial photodynamic therapy (aPDT) Helbo in bacterial decontamination of the site pre-implant and post-extraction in the treatment of peri-implantitis. Methods: As demonstrated in many studies, photodynamic therapy helps efficiently the long-term maintenance of teeth, favors a reduction in pain, a rapid remission of inflammation and tissue regeneration interested. In our study we want to demonstrate how Helbo photodynamic therapy in patients with periodontal disease overt and in case of peri-implantitis can be effective for disinfection of the contaminated site. For all patients the diagnosis was made of chronic persistent or aggressive periodontitis (40 patients) or peri-implantitis (35 patients). All patients were treated with antimicrobial photodynamic therapy (aPDT) Helbo. Clinical signs of peri-implantitis were observed: increased probing depth with a marginal bone resorption > 1.5 mm 1 year after loading and 0.2 mm for year (> 5 mm) associated to defects with craters formed, bleeding and/or suppuration in the survey; therefore disagree with the criteria for implant success established by Albrektsson et al. Photodynamic therapy acts through the inactivation of cells, microrganisms or molecules, induced by light and not by heat reducing bacteria of 99%. This therapy involves the application of the chromophore Helbo Blue photosensitize (Bredent) which is left to act for at least one minute at each site by trattatare, increasing the time of permanence into the deepest pockets. Then proceed to rinse the excess liquid and exposure of the laser. The exhibition is made within 6 points of the tooth (buccal: mesial, central and distal; oral: mesial, central, distal) in a circular motion around the implant, never out of the rut, with dwell time of 10 seconds site. Were carried out periodic follow-up up to 3 years from the treatments. Results: After Photodynamic Therapy (aPDT) Helbo we found no cases of implant failure in cases of post-extraction implants, in addition, it was found to maintain the level of attack peri-implant bone in cases of peri-implantitis and in some cases there was a restitutio ad integrum with bone regeneration around the implant. Conclusions: Our study has demonstrated that the antimicrobial photodynamic therapy Helbo is able to determine a bacterial decontamination significant, then it can be regarded as an adjuvant in the therapy of peri-implantitis and bacterial decontamination of post-extraction sites preimplantari. Antimicrobial photodynamic therapy (aPDT) Helbo allows a reduction of the bacterial load without administration of local anesthesia and can be repeated without side effects. This method allows a minimally invasive way to treat the peri-implantitis, achieving reduction or abatement of the clinical indices of bleeding and pocket depth.
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