RT Journal Article T1 Probiotic effects of orally administered Lactobacillus reuteri-containing tablets on the subgingival and salivary microbiota in patients with gingivitis. A randomized clinical trial A1 Iniesta Albentosa, Margarita Isabel A1 Herrera González, David A1 Montero Solís, Eduardo A1 Zurbriggen, Milena A1 Matos, Ana A1 Marín Cuenda, María José A1 Sánchez Beltrán, María Del Carmen A1 Llama Palacios, María Arantxazu A1 Sanz Alonso, Mariano AB Objective: To investigate the effects of an orally administered probiotic on the oral microbiota.Methods: A placebo-controlled, parallel study was conducted in 40 gingivitis subjects during 8 weeks. Treatment consisted on the administration of a daily tablet, either containing Lactobacillus reuteri or placebo. Unstimulated saliva and subgingival samples were collected and analysed by culture and PCR. Clinical and microbiological outcome variables were compared between and within groups.Results: There were no significant changes between and within the groups in the clinical variables. In saliva, total anaerobic counts after 4 weeks (p = 0.021) and counts of Prevotella intermedia after 8 weeks (p = 0.030), showed reductions in the test group. In subgingival samples, significant reductions in the changes baseline to 4 weeks were observed for P. gingivalis counts (p = 0.008). With PCR, L. reuteri ATCC-PTA-5289 was more frequently detected than L. reuteri DSM-17938.Conclusions: The effect of L. reuteri administered in tablets resulted in a reduction in the number of selected periodontal pathogens in the subgingival microbiota, without an associated clinical impact. PB Willey SN 0303-6979 YR 2012 FD 2012 LK https://hdl.handle.net/20.500.14352/94481 UL https://hdl.handle.net/20.500.14352/94481 LA eng NO Iniesta M, Herrera D, Montero E, Zurbriggen M, Matos AR, Marín MJ, Sánchez-Beltrán MC, Llama-Palacio A, Sanz M. Probiotic effects of orally administered Lactobacillus reuteri-containing tablets on the subgingival and salivary microbiota in patients with gingivitis. A randomized clinical trial. J Clin Periodontol. 2012 Aug;39(8):736-44. DS Docta Complutense RD 7 abr 2025