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CompletedNCT03933501Updated May 13, 2019

Amoxicillin and Metronidazole in Association With Non-surgical Therapy in Aggressive Periodontitis Treatment

A Phase 4 interventional study of amoxicillin and metronidazole and Placebos in Generalized Aggressive Periodontitis, sponsored by University of Campinas, Brazil. Completed. Per ClinicalTrials.gov, last updated 2019-05-13.

Sponsored by University of Campinas, Brazil · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Registered 13 years 3 months after the study started (first participant enrolled Jan 2006, registered Apr 2019).
Phase
Phase 4
Study type
Interventional
Enrollment
48
Allocation
Randomized
Sex
All
01

Study summary

This study is designed as a parallel, masked, randomized, placebo-controlled clinical trial to assess the clinical, microbiological, and immunological outcomes of scaling and root planning (SRP) or full-mouth ultrasonic debridement (FMUD) with AM (Amoxicillin + Metronidazole) for the treatment of Generalized Aggressive Periodontitis (GAgP).

Read the detailed description

Forty eight GAgP patients were divided into 4 groups: the SRP group (n = 12), which received SRP plus placebo, and the SRP+AM group (n = 12), which received SRP and 375mg amoxicillin plus 250 mg metronidazole for 7 days, the FMUD group (n = 12), which received FMUD plus placebo, and the FMUD+AM group (n = 12), which received FMUD and 375mg amoxicillin plus 250 mg metronidazole for 7 days. The following clinical outcomes were tested: plaque and bleeding on probing indices, pocket probing depth (PD), relative gingival margin position (GMP), and relative clinical attachment level (CAL). The total amount of Porphyromonas gingivalis (Pg), Aggregatibacter actinomycetemcomitans (Aa), Tannerella forsythia (Tf), and gingival crevicular fluid (GCF) concentration of interleukin (IL)-10 and IL-1b were also determined. All clinical, microbiological, and immunological parameters were assessed at baseline and at 3 and 6 months post-therapy. The ANOVA/Tukey test was used for statistical analysis (a = 5%).

02

Conditions studied

  • Generalized Aggressive Periodontitis

Keywords

  • Aggressive periodontitis
  • anti-infective agents
  • debridement
  • randomized clinical trial
  • ultrasonic
03

In context

Periodontitis

1,635 studies on the registry are indexed under Periodontitis; 327 are open to participants now.

This study's enrollment of 48 is close to the median of 45 across 1,191 interventional studies indexed under Periodontitis.

Browse Periodontitis studies →

Lead sponsor

University of Campinas, Brazil is the lead sponsor of 166 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • diagnosis of GAgP;
  • presence of 20 teeth;
  • presence of teeth presenting PD>5 mm with bleeding on probing (BOP) and 2 teeth with PD>7mm (including incisors and first molars, in addition to two other non-contiguous teeth between them);
  • good general health;
  • \<35 years of age.

Exclusion criteria

Exclusion Criteria:

  • were pregnant or lactating;
  • were suffering from any other systemic diseases (e.g., cardiovascular, diabetes);
  • received antimicrobials in the previous 3 months;
  • were taking long-term anti-inflammatory drugs;
  • received a course of periodontal treatment within the last 6 months;
  • smoked
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
48 participants (actual)

Study arms

  • Experimental
    FMUD + AM

    One session of full-mouth ultrasonic debridement (FMUD) with a time limit of 45 minutes plus 375 mg amoxicillin and 250 mg metronidazole (AM) prescribed on the day of treatment, every 8 hours for 7 days.

    Drug: amoxicillin and metronidazole

  • Placebo comparator
    FMUD

    One session of full-mouth ultrasonic debridement (FMUD) with a time limit of 45 minutes plus two distinct placebo pills prescribed on the day of treatment and taken every 8 hours for 7 days.

    Drug: Placebos

  • Experimental
    SRP + AM

    Four sessions (1/week) of scaling and root planning, plus 375 mg amoxicillin and 250 mg metronidazole (AM) prescribed on the last session of treatment and taken every 8 hours for 7 days.

    Drug: amoxicillin and metronidazole

  • Placebo comparator
    SRP

    Four sessions (1/week) of scaling and root planning, plus two distinct placebo pills prescribed on the last session of treatment and taken every 8 hours for 7 days.

    Drug: Placebos

Interventions

  • Drugamoxicillin and metronidazole

    375 mg amoxicillin and 250 mg metronidazole prescribed on the day of treatment, every 8 hours for 7 days.

  • DrugPlacebos

    Two distinct placebo pills prescribed on the day of treatment and taken every 8 hours for 7 days.

06

What researchers measure

Primary outcomes

  1. Change of the baseline relative clinical attachment level at 6 months

    distance from the bottom of the pocket to the stent margin.

    Time frame: Baseline, 3 months and 6 months

Secondary outcomes

  1. Change of the baseline probing depth at 6 months

    Distance from the bottom of pocket to gingival margin;

    Time frame: Baseline, 3 months and 6 months

  2. Change of the baseline inflammatory markers levels in gingival crevicular fluid (pg/uL) at 6 months

    Concentration of IL-1β, IL-10 released in gingival crevicular fluid

    Time frame: Baseline, 3 months and 6 months

  3. Change in the microbial composition at 6 months

    Concentration of bacteria in the subgingival biofilm

    Time frame: Baseline, 3 months and 6 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Taiete T, Monteiro MF, Casati MZ, do Vale HF, Ambosano GMB, Nociti FH, Sallum EA, Casarin RCV. Local IL-10 level as a predictive factor in generalized aggressive periodontitis treatment response. Scand J Immunol. 2019 Dec;90(6):e12816. doi: 10.1111/sji.12816. Epub 2019 Oct 3. PubMed 31448837 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 13, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03933501
Lead sponsor
University of Campinas, Brazil
Responsible party
Renato Casarin (Professor at Piracicaba Dental School, University of Campinas, Brazil) — Principal investigator
First posted
May 1, 2019
Start date
Jan 1, 2006
Primary completion
Dec 1, 2008
Completion
Dec 1, 2018
Last update
May 13, 2019

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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