Antibiotics as Adjuncts to Periodontal Therapy:Pharmacokinetic Considerations and Dosing Strategies

Recruiting now · Phase 4

Conditions studied: Periodontal Diseases, Antibiotics, Pharmacokinetics

In brief

Periodontitits is a bacteria induced inflammatory disease that destroys the supporting tissues of the tooth and leads to tooth loss. Treatment consists mainly of the mechanical cleaning of the tooth surfaces in order to remove the bacterial deposits (plaque and calculus). This procedure can reduce the level of pathogenic bacteria but it can not eradicate them. In severe cases, for the complete resolution of the disease, the elimantion of certain species of bacteria is needed. In order to achieve that, the combination of different regimens of antibiotics adjunctive to the mechanical treatment has been proposed. However, dosage and duration of antimicrobial therapy should be optimal and not excessive as issues may arise related to increased antimicrobial resistance in the population and the individual due to habitual prescription of wide-spectrum antibiotic regimens, horizontal gene transfer and genetic mutation. In the present study, in an effort to optimize the dosage and duration of the antimicrobial regimen, we will determine the pharmacokinetics (PK) and pharmacodynamic (PD) properties of the MET-AMO combination and of AZI in Gingival Crevicular Fluid (GCF), saliva and serum in severe periodontitis patients during and after either a 3-day or a 7-day course of treatment.

Key facts

Study ID

NCT04669717

Run by

University of Geneva, Switzerland

People needed

45

Starts

2021-09-01

Expected to finish

2028-12-01

Last updated by the study team

2026-04-29

Who can join

Age: 18 and older, up to 80. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Informed Consent as documented by signature
• Aged 18-80 years old with need of periodontal treatment associated with adjunctive antibiotic therapy
• Presence of at least 30% of the teeth in the mouth with PD>6mm and BOP

You may not qualify if…

• Persons with systemic illnesses (uncontrolled diabetes mellitus, cancer, human immunodeficiency virus, bone metabolic diseases or disorders that compromise wound healing, radiation, or immunosuppressive therapy)
• Pregnancy or lactation
• Persons who had taken AB within the previous 2 months
• Persons who are taking nonsteroidal anti-inflammatory drugs
• Persons who have a confirmed or suspected intolerance to 5-nitroimidazole derivatives or amoxicillin or macrolides
• Previous periodontal therapy the last 1 year
• Known or suspected non-compliance, drug or alcohol abuse
• Inability to follow due to language problems, psychological disorders, dementia, etc. of the participant
• Participants not willing to attend regular dental maintenance visits and follow-up evaluations
• Participation in another study with investigational drug within the 30 days preceding and during the present study

Where it is running

• University of Geneva, University Clinics of Dental Medicine — Geneva, Canton of Geneva, Switzerland (enrolling)

Full record on ClinicalTrials.gov

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