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Dabija-Wolter G, Al-Zubaydi SS, Mohammed MMA, et al. The effect of metronidazole plus amoxicillin or metronidazole plus penicillin V on periodontal pathogens in an in vitro biofilm model. Clin Exp Dent Res. 2018;4(1):6-12doi: 10.1002/cre2.96.
Dabija-Wolter, G., Al-Zubaydi, S. S., Mohammed, M. M. A., Bakken, V., & Bolstad, A. I. (2018). The effect of metronidazole plus amoxicillin or metronidazole plus penicillin V on periodontal pathogens in an in vitro biofilm model. Clinical and experimental dental research, 4(1), 6-12. https://doi.org/10.1002/cre2.96
Dabija-Wolter, Gabriela, et al. "The effect of metronidazole plus amoxicillin or metronidazole plus penicillin V on periodontal pathogens in an in vitro biofilm model." Clinical and experimental dental research vol. 4,1 (2018): 6-12. doi: https://doi.org/10.1002/cre2.96
Dabija-Wolter G, Al-Zubaydi SS, Mohammed MMA, Bakken V, Bolstad AI. The effect of metronidazole plus amoxicillin or metronidazole plus penicillin V on periodontal pathogens in an in vitro biofilm model. Clin Exp Dent Res. 2018 Jan 02;4(1):6-12. doi: 10.1002/cre2.96. eCollection 2018 Feb. PMID: 29744209; PMCID: PMC5813892.
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Clin Exp Dent Res. 2018 Jan 02;4(1):6-12. doi: 10.1002/cre2.96. eCollection 2018 Feb.

The effect of metronidazole plus amoxicillin or metronidazole plus penicillin V on periodontal pathogens in an in vitro biofilm model.

Clinical and experimental dental research

Gabriela Dabija-Wolter, Sundus Saad Al-Zubaydi, Marwan Mansoor Ali Mohammed, Vidar Bakken, Anne Isine Bolstad

Affiliations

  1. Department of Clinical Dentistry, Faculty of Medicine University of Bergen Norway.
  2. Department of Clinical Science, Faculty of Medicine University of Bergen Norway.

PMID: 29744209 PMCID: PMC5813892 DOI: 10.1002/cre2.96

Abstract

A combination of metronidazole (MET) and amoxicillin (AMX) is commonly used as adjunct to mechanical therapy of periodontal disease. The use of broad spectrum antibiotics such as AMX may contribute to development of antibiotic resistance. The aim was to evaluate the in vitro effect of replacing AMX with penicillin V (PV) in combination with MET on a biofilm model. A biofilm model consisting of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Fusobacterium nucleatum was developed. The biofilms were exposed to AMX + MET and PV + MET in two different concentrations. Bacterial viability in biofilms following antibiotic exposure was assessed by viable counts and by confocal microscopy. No live colonies of P. gingivalis nor F. nucleatum were retrieved from biofilms exposed to AMX + MET or PV + MET. The amount of A. actinomycetemcomitans was 4-5 logs reduced following antibiotic treatment; no statistical significance was achieved between AMX + MET or PV + MET treated biofilms. Replacement of AMX with PV at the same concentration, in combination with MET, resulted in similar effect on bacterial viability in this in vitro model. The option of using PV + MET instead of AMX + MET deserves further investigation, as this may contribute to reduce the risk of antibiotic resistance development.

Keywords: Aggregatibacter actinomycetemcomitans; antibiotic combination therapy; antibiotic resistance; biofilm; periodontal; periodontitis

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