Effect of Azithromycin on Failure Proportion of Severe Periodontitis Non-surgical Treatment

Study Overview
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Brief Summary
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Primary purpose: Evaluate the effect of azithromycin on failure proportion of severe chronic periodontitis non-surgical treatment; failure characterized by the persistence of at least one periodontal pocket> 5mm at 6 months Secondary purpose: Evaluate the effect of azithromycin on the persistence of pathological periodontal pockets > 5mm during non-surgical treatment of severe chronic periodontitis at 3 months and 6 months Evaluate the effect of azithromycin on the changes of clinical signs, periopathogen levels, expression of macrolides resistance genes, and expression of antimicrobial peptides (PAMs) during treatment of severe chronic periodontitis at 3 months and 6 months Assess therapeutic observance and side effects of antibiotic treatment Assess at 3 and 6 months the potential interactions of local, bacterial (periopathogen and resistance gene) clinical factors, and host defense (PAMs) with the effect of azithromycin, on failure proportion of severe chronic periodontitis non-surgical treatment

Official Title
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Effect of Azithromycin on Failure Proportion of Severe Periodontitis Non-surgical Treatment

Conditions
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Severe Chronic Periodontitis

Intervention / Treatment
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* Drug: Non-surgical periodontal treatment and azithromycin treatment
* Other: Non-surgical periodontal treatment and placebo treatment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient with severe generalized chronic periodontitis (loss of attachment ≥ 5mm at > 30% sites) (AAP classification 1999) and periodontal pockets >5mm on at least 5% of sites presence of bleeding on probing (≥ 30%) male or female subject older than 35 Years patient with at least 15 teeth including at least 2 molars (excluding wisdom teeth) patient with social assurance voluntary patient who signed informed consent Exclusion Criteria: Patient with contraindications to treatment with azithromycin or its excipient: absolute contraindications are the history of allergy to macrolides or one of the excipients used in this study, association with ergot derivatives Rye, Cisapride, colchicine, and severe hepatic deficiencies. Other contraindications are for patients at risk of cardiac arrhythmia (diagnosis of QT interval prolongation and/or concomitant treatments, electrolytic disorder (hypokalemia, hypomagnesemia, cardiac arrhythmia, heart failure), severe renal failure, and drug associations (Antivitamin K, statins) Patient with aggressive periodontitis (AAP classification 1999) Patient smoking more than 10 cigarettes/day Patient with endocarditis risk or requiring antibiotic prophylaxis Patient with antibiotic treatment within 6 months prior to periodontal examination Patient with anti-inflammatory treatment in the month preceding periodontal examination and/or anti-inflammatory treatment of more than 3 consecutive days in the 3 months preceding periodontal examination Patient following or having followed a drug treatment (cyclosporine and other anti-rejection drugs, antiepileptic, calcium inhibitor) influencing periodontal status Patient with pathologies influencing periodontal status and/or systemic or local inflammatory response, such as diabetes, infectious stomatitis or not, diseases inflammatory and autoimmune, immuno-depression Patient with prolonged oral hygiene disability (physical/psychic impossibility of brushing teeth) Patient with impaired oral condition (untreated cavities, non-dental teeth rehabilitated), dental infections whose management requires antibiotic treatment within 6 months Patient having specialized periodontal treatment, root planning, or a periodontal surgical treatment in the year prior to the examination Pregnant woman or breastfeeding Patient with repeated chronic infections (more than 3 times per year) requiring antibiotic treatment Patient who had oral antiseptic treatment in the previous month Patient included in another intervention research protocol or in periods of exclusion (participation in an observational study remains possible) Patient with high bleeding risk and/or INR > 4. Patient under guardianship and under protection of justice Patient unable to cooperate or understand the instructions related to the study and care

Ages Eligible for Study
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Minimum Age: 35 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Azithromycin<br>62 patients Non-surgical periodontal treatment and two 250mg azithromycin tablets one time daily for 3 days | Drug: Non-surgical periodontal treatment and azithromycin treatment<br>* Procedure: periodontal treatment: oral hygiene instruction, scaling and root planning Drug: two 250mg azithromycin tablets one time daily for 3 days after scaling and root planning sessions<br>|
| Placebo Comparator: Placebo<br>62 patients Non-surgical periodontal treatment and two 250mg starch tablets one time daily for 3 days | Other: Non-surgical periodontal treatment and placebo treatment<br>* Procedure: periodontal treatment: oral hygiene instruction, scaling and root planning Placebo: two 250mg starch tablets one time daily for 3 days after scaling and root planning sessions<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Proportion of subjects with failure of treatment, failure defined by persistence of at least one residual periodontal pocket > 5mm |  | At 6 months |