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Adjunctive Systemic Azithromycin versus Amoxycillin and Metronidazole in Non-Surgical Mechanical Therapy of Periodontitis

Efficacy of adjunctive azithromycin versus amoxycillin and medtronidazole, and placebo in the treatment of chronic periodontitis in adults

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12615001047583
Enrollment
14
Registered
2015-10-07
Start date
2016-09-06
Completion date
2017-04-28
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The aim of this study is to compare the clinical and microbial changes occurring in chronic periodontitis patients receiving non-surgical treatment alone or with systemically administered azithromycin or with amoxicyllin and metronidazole. The hypothesis is that non-surgical periodontal treatment in combination with systemically administered azithromycin will have superior effects on treatment outcomes (clinical and microbial parameters) than non-surgical periodontal therapy alone or in combination with systemically adminstered amoxicillin and metronidazole.

Interventions

Interventions: Scaling & root planing with Azithromycin - 500mg, once a day, 4 days Scaling & root planing with Amoxycillin (500mg) & Metronidazole (400mg) both 3 times a day for 8 days Scaling & root planing with Placebo A patient questionnaire will be given to check for compliance and record any adverse effects Scaling and root planing - removal of hard and soft deposits on the tooth and root surfaces that contribute to infection under local anaesthesia - divided into 2 sessions (right han

Interventions: Scaling & root planing with Azithromycin - 500mg, once a day, 4 days Scaling & root planing with Amoxycillin (500mg) & Metronidazole (400mg) both 3 times a day for 8 days Scaling & root planing with Placebo A patient questionnaire will be given to check for compliance and record any adverse effects Scaling and root planing - removal of hard and soft deposits on the tooth and root surfaces that contribute to infection under local anaesthesia - divided into 2 sessions (right hand side followed by left hand side of mouth) from 24 hours - 1 week apart Drug administration - oral tablet - begins the morning of the first session of scaling and root planing

Sponsors

Meredith Owen
Lead SponsorIndividual

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Patients with moderate - severe chronic periodontitis 2. Approximal Plaque Index <40% 3. Sulcus Bleeding Index <30%

Exclusion criteria

1. Patients with known allergies to test antimicrobial agents 2. Patients who have received periodontal therapy in the previous 3 months 3. Patients who have used systemic antibiotics within the previous 3 months 4. Patients who are pregnant or breastfeeding 5. Patients with systemic conditions that could influence the outcome of periodontal therapy 6. Patients that require antibiotic prophylaxis

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026