Abstract
Broad methodological heterogeneity makes the literature on the clinical effects of laser treatment in periodontitis, both as monotherapy and adjunct to non-surgical therapy, which is difficult to interpret. The present split-mouth study was performed: (i) to determine the efficacy and safety of a photoablative-photodynamic diode laser therapy, including antiseptic LED irradiation, in adjunct to scaling and root planing (iPAPD+SRP) vs. sham-treatment+SRP for the treatment of diffuse severe periodontitis and (ii) to estimate the patient-reported outcomes. Twenty-four patients with severe periodontitis were treated with iPAPD+SRP or sham-treatment+SRP. iPAPD+SRP consisted of the following: (1) intra-/extra-pocket de-epithelization with photoablative λ 810 nm laser, (2) disinfection with λ 405 nm LED, (3) SRP, and (4) 10 weekly antiseptic/anti-inflammatory photodynamic treatments with λ 635 nm laser and 0.1% toluidine blue as photosensitizer. Clinical and cytofluorescent periodontal markers and patient-reported results were analyzed. At 1-year follow-up, both groups showed a significant reduction of several severity markers of periodontitis, namely probing depth (PD) and bleeding on probing (BoP), as well as of bacteria, polymorphonuclear cells, erythrocytes and damaged epithelial cells in exfoliative samples, as compared with day 0. The quadrants subjected to iPAPD+SRP showed significantly better values of these parameters as well as of clinical attachment level (CAL) as compared with those undergoing sham-treatment+SRP. The patients' perceived pain/discomfort, and overall liking was also in favor of the iPAPD+SRP treatment. This study confirms the efficacy of combined phototherapy in adjunct to SRP which had emerged from previous clinical trials, extending its field of application to severe periodontitis.
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