Two-year clinical outcomes following non-surgical mechanical therapy of peri-implantitis with adjunctive diode laser application

BackgroundNon-surgical mechanical therapy of peri-implantitis (PI) with/without adjunctive measures yields limited clinical improvements. AimTo evaluate the clinical outcomes following non-surgical mechanical therapy of PI with adjunctive application of a diode laser after an observation period 2years. Material and methodsAt baseline (BL), 15 patients with 23 implants with a sandblasted and acid-etched (SLA) surface diagnosed with PI were enrolled and treated. PI was defined as presence of probing pocket depths (PPD) 5mm with bleeding on probing (BoP) and/or suppuration and 2 threads with bone loss after delivery of the restoration. Implant sites were treated with carbon fiber and metal curettes followed by repeated application of a diode laser 3x for 30s (settings: 810nm, 2.5W, 50Hz, 10ms). This procedure was performed at Day 0 (i.e., baseline), 7 and 14. Adjunctive antiseptics or adjunctive systemic antibiotics were not prescribed. ResultsAll implants were in function after 2years. The deepest PPD decreased from 7.52.6mm to 3.6 +/- 0.7mm at buccal (P<0.0001) and from 7.7 +/- 2.1mm to 3.8 +/- 0.9mm at oral sites (P<0.0001), respectively. The % of implants with 1 site with BoP decreased from 100% at BL to 43% after 2years (P=0.0002). The % of implants with suppuration decreased from 87% at BL to 0% after 2years (P<0.0001). ConclusionNon-surgical mechanical therapy of PI with adjunctive repeated application of a diode laser yielded significant clinical improvements after an observation period of at least 2years.