{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T21:29:39Z","timestamp":1774560579782,"version":"3.50.1"},"reference-count":33,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2016,1,1]],"date-time":"2016-01-01T00:00:00Z","timestamp":1451606400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2016]]},"abstract":"<jats:p><jats:italic>Aim<\/jats:italic>. Endosseous implants are widely used to replace missing teeth but mucositis and peri-implantitis are the most frequent long-term complications related with dental implants. Removing all bacterial deposits on contaminated implant surface is very difficult due to implant surface morphology. The aim of this study was to evaluate the bactericidal potential of photodynamic therapy by using a new high level laser irradiation protocol associated with hydrogen peroxide in peri-implantitis.<jats:italic>Materials and Methods<\/jats:italic>. 10 patients affected by peri-implantitis were selected for this study. Medical history, photographic documentation, periodontal examination, and periapical radiographs were collected at baseline and 6 months after surgery. Microbiological analysis was performed with PCR Real Time. Each patient underwent nonsurgical periodontal therapy and surgery combined with photodynamic therapy according to High Level Laser Therapy protocol.<jats:italic>Results<\/jats:italic>. All peri-implant pockets were treated successfully, without having any complication and not showing significant differences in results. All clinical parameters showed an improvement, with a decrease of Plaque Index (average decrease of 65%, range 23\u201386%), bleeding on probing (average decrease of 66%, range 26\u201380%), and probing depth (average decrease of 1,6\u2009mm, range 0,46\u20132,6\u2009mm). Periapical radiographs at 6 months after surgery showed a complete radiographic filling of peri-implant defect around implants treated. Results showed a decrease of total bacterial count and of all bacterial species, except for<jats:italic>Eikenella corrodens<\/jats:italic>, 6 months after surgery.<jats:italic>Conclusion<\/jats:italic>. Photodynamic therapy using HLLT appears to be a good adjunct to surgical treatment of peri-implantitis.<\/jats:p>","DOI":"10.1155\/2016\/6321906","type":"journal-article","created":{"date-parts":[[2016,6,9]],"date-time":"2016-06-09T22:05:30Z","timestamp":1465509930000},"page":"1-8","source":"Crossref","is-referenced-by-count":31,"title":["Clinical, Radiographic and Microbiological Evaluation of High Level Laser Therapy, a New Photodynamic Therapy Protocol, in Peri-Implantitis Treatment; a Pilot Experience"],"prefix":"10.1155","volume":"2016","author":[{"given":"Gianluigi","family":"Caccianiga","sequence":"first","affiliation":[{"name":"Department of Surgery and Translational Medicine, University of Milano-Bicocca, Milan, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gerard","family":"Rey","sequence":"additional","affiliation":[{"name":"University of Paris Diderot, Paris, 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