LAUSR

AIM To compare the level of inflammatory markers and endothelial function 24 hours (Day1) and 90 days (Day90) after conventional quadrant-wise (Q-SRP) versus one-stage full-mouth scaling (FM-SRP) in patients affected by type 2 diabetes mellitus (T2DM). METHODS Patients affected by periodontitis and T2DM were randomly allocated to receive FM-SRP or Q-SRP and followed up at Day1 and Day90. Serum samples, vital signs and flow-mediated dilation (FMD) parameters were collected at baseline, Day1 and Day90. Periodontal variables were collected at baseline and Day90. The primary outcome was the C-reactive Protein (CRP) concentration at Day1 after periodontal treatment. The Student t-test for independent samples was used for between-group comparisons (Mann Whitney U test for non-normal data), while the ANOVA with post-hoc Tukey tests (Kruskal Wallis and Dunn tests for non-normal data) were used for intragroup comparisons. RESULTS 40 subjects were included. FM-SRP produced a significant increase in CRP and a significant reduction in FMD at Day1 compared to Q-SRP (p<0.05). The absolute change in HbA1c (mmol/mol) from baseline to Day90 was significantly improved in the Q-SRP (ΔHbA1c=-1.59 (SD=1.20)) compared to the FM-SRP group (ΔHbA1c=-0.8 (SD=0.95)) (p=0.04). CONCLUSIONS FM-SRP triggers a robust acute-phase response at 24 hours after treatment compared to Q-SRP. Such systemic acute perturbations may offset the benefic systemic effects of periodontal treatment in terms of HbA1c reduction and improvement in endothelial function in T2DM subjects.