PMID- 31819766 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1792-0981 (Print) IS - 1792-1015 (Electronic) IS - 1792-0981 (Linking) VI - 18 IP - 6 DP - 2019 Dec TI - Clinical, microbiological and oxidative stress evaluation of periodontitis patients treated with two regimens of systemic antibiotics, adjunctive to non-surgical therapy: A placebo-controlled randomized clinical trial. PG - 5001-5015 LID - 10.3892/etm.2019.7856 [doi] AB - Aim of research was to evaluate and compare the clinical and microbiological effects of two different regimens of amoxicillin (AMX) and metronidazole (MTZ) combined with non-surgical periodontal therapy in patients with chronic periodontitis (CP), and identify antibiotic-resistant bacteria and changes in oxidative stress (OS). Forty-six patients with generalized CP were randomly assigned to group A [scaling and root planing within 24 h (SRP) + placebo for 7 days), group B [SRP + AMX + MTZ, both 500 mg three times daily (TID), 3 days), and group C [SRP + AMX + MTZ, both 500 mg TID, 7 days). Periodontal pocket depth (PPD-primary outcome), clinical attachment level (CAL), full-mouth bleeding scores (FMBS), plaque scores (FMPS), blood and subgingival plaque were assessed at baseline and after three months. OS was evaluated via derivatives of reactive oxygen metabolites (d-ROMs) and assessments of biological antioxidant potential (BAP). Bacterial profiling was performed by PCR. Antibiotic resistance was evaluated in cultures. PPD, CAL, number of sites with PPD >/=6 mm, their PPD, CAL and FMBS decreased (P<0.05) in all groups, as well as FMPS in groups A and B, and d-ROMs in group C. There were significant differences among groups regarding decreases in the frequency of detection for Aa and Tf. For Aa, there were differences between groups A and C (P=0.048) and between groups B and C (P=0.048), but not between groups A and B; whereas for Tf, groups A and B were different from group C (P<0.001), but not from each other (P=0.920). No resistance to AMX was identified prior to treatment; two strains were resistant after treatment. Before treatment, 13 strains were resistant to MTZ, and 2 were resistant after. One strain in the same patient was sensitive prior to treatment, and later became resistant to both antibiotics. SRP with a 7-day course of antibiotic therapy was more effective for improving clinical parameters, in decrease of detection of several periopathogens, and in improvement of OS when compared to a 3-day regimen. Resistance was found in fewer strains after treatment than before. CI - Copyright: (c) Boia et al. FAU - Boia, Simina AU - Boia S AD - Department of Periodontology, Faculty of Dental Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Boariu, Marius AU - Boariu M AD - Department of Endodontics, Faculty of Dental Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Baderca, Flavia AU - Baderca F AD - Department of Histology, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Rusu, Darian AU - Rusu D AD - Department of Periodontology, Faculty of Dental Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Muntean, Delia AU - Muntean D AD - Department of Microbiology, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Horhat, Florin AU - Horhat F AD - Department of Microbiology, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Boia, Eugen-Radu AU - Boia ER AD - Department of ENT, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Borza, Claudia AU - Borza C AD - Department of Pathophysiology, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Anghel, Andrei AU - Anghel A AD - Department of Biochemistry, Faculty of Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. FAU - Stratul, Stefan-Ioan AU - Stratul SI AD - Department of Periodontology, Faculty of Dental Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. LA - eng PT - Journal Article DEP - 20190805 PL - Greece TA - Exp Ther Med JT - Experimental and therapeutic medicine JID - 101531947 PMC - PMC6895779 OTO - NOTNLM OT - antibiotic resistance OT - antibiotics OT - bacteria OT - oxidative stress OT - periodontitis OT - root planing EDAT- 2019/12/11 06:00 MHDA- 2019/12/11 06:01 PMCR- 2019/08/05 CRDT- 2019/12/11 06:00 PHST- 2019/05/30 00:00 [received] PHST- 2019/07/25 00:00 [accepted] PHST- 2019/12/11 06:00 [entrez] PHST- 2019/12/11 06:00 [pubmed] PHST- 2019/12/11 06:01 [medline] PHST- 2019/08/05 00:00 [pmc-release] AID - ETM-0-0-7856 [pii] AID - 10.3892/etm.2019.7856 [doi] PST - ppublish SO - Exp Ther Med. 2019 Dec;18(6):5001-5015. doi: 10.3892/etm.2019.7856. Epub 2019 Aug 5.