Cochrane · intervention · CD012568

Adjunctive systemic antimicrobials for the non‐surgical treatment of periodontitis

Khattri, S, Kumbargere Nagraj, S, Arora, A, et al. · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

Oral HealthPeriodontology2 versionsAMSTAR 2: not assessed
Full textEvery question was extracted from the full review (methods and results), not only its Summary of Findings table.
Questions
174
current version
GRADE rated
30
No studies
40
Included studies
45
as reported
No studies 40 · 23%Ungraded 104 · 59.8%Very low 30 · 17.2%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Review question

ElementPlanned (methods)Found (results)
PopulationAll individuals with clinically diagnosed untreated periodontitis (chronic/aggressive). Exclusions: necrotizing periodontitis; recurrent periodontitis; refractory periodontitis; periodontitis as a manifestation of systemic disease; pregnancy; systemic disease/condition which can predispose to periodontitis (e.g. diabetes)Adults (>= 18 years) with clinically diagnosed untreated chronic or aggressive periodontitis; 2664 participants across 45 trials conducted worldwide (30 parallel-arm, 14 multi-arm)
InterventionSystemic use of antimicrobials as an adjunct to scaling and root planing (SRP). Interventions comparing different antimicrobials administered systemically (different drugs/dosage regimens/combinations/time periods) as an adjunct to SRPAmoxicillin + metronidazole + SRP (n=18 studies); Metronidazole + SRP (n=8 studies); Azithromycin + SRP (n=9 studies); Amoxicillin + clavulanate + SRP (n=2 studies); Doxycycline + SRP (n=3 studies); Tetracycline + SRP (n=1 study); Clarithromycin + SRP (n=2 studies); Moxifloxacin + SRP (n=1 study); Levofloxacin + SRP (n=2 studies); Clindamycin + SRP (n=1 study); Cefixime + SRP (n=1 study); Minocycline + SRP (n=1 study); Spiramycin + SRP (n=1 study)
ComparisonSRP alone or SRP with placeboSRP alone or placebo; other systemic antibiotics + SRP (head-to-head comparisons)
OutcomesPrimary: Percentage of closed pockets (pocket depth < 4 mm). Secondary: Clinical/relative attachment level (CAL); Probing pocket depth; Percentage of bleeding on probing (BOP); Antimicrobial resistance; Adverse effects of antibiotics; Long-term stability of CAL and pocket depth; Patient-reported quality of life changesPercentage of closed pockets (n=4 studies); Clinical attachment level (n=38 studies); Probing pocket depth (n=38 studies); Percentage of bleeding on probing (n=40 studies); Adverse events (n=29 studies); Antimicrobial resistance (n=0 studies); Patient-reported quality of life changes (n=0 studies)
Study designsRandomised controlled trials (RCTs). Exclusions: quasi-RCTs, cross-over, and split-mouth trialsRandomised controlled trials (n=45 studies; 38 contributed data to meta-analysis)
TimingShort-term (<= 3 months); intermediate-term (> 3 months to < 1 year); long-term (>= 1 year) follow-upShort-term (<= 3 months); intermediate-term (> 3 months to < 1 year); long-term (>= 1 year)

Search date: 2020-03. Databases: Cochrane Oral Health's Trials Register; Cochrane Central Register of Controlled Trials (CENTRAL); MEDLINE Ovid; Embase Ovid; US National Institutes of Health Ongoing Trials Register ClinicalTrials.gov; World Health Organization International Clinical Trials Registry Platform

Questions and results

Show all 2 versions

Amoxicillin + metronidazole + SRP vs SRP

Population: Adults with periodontitis (chronic and aggressive)
15 questions
OutcomeEffectEvidenceStatus / GRADE
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.47 [-0.68, -0.26]6 studies · 215 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -0.18 [-0.33, -0.04]15 studies · 562 participantsUngraded
Percentage of closed pockets
Intermediate-term (> 3 months to < 1 year)
MD -13.90 [-24.16, -3.64]1 study · 44 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -5.32 [-12.02, 1.37]5 studies · 172 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.21 [-0.41, -0.01]13 studies · 501 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
MD -0.30 [-0.42, -0.18]2 studies · 389 participantsVery low
Downgraded: risk of bias, imprecision
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of closed pockets
Long-term (≥ 1 year)
MD -16.20 [-25.87, -6.53]1 study · 44 participantsVery low
Downgraded: risk of bias, imprecision
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -2.05 [-2.98, -1.11]13 studies · 460 participantsUngraded
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -0.47 [-0.90, -0.05]2 studies · 389 participantsVery low
Downgraded: risk of bias, imprecision
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.04 [-0.35, 0.26]6 studies · 215 participantsUngraded
Adverse events
Long-term (≥ 1 year)
Most common adverse events were mild gastrointestinal disturbances, nausea and vomiting, metallic taste, and diarrhoea in the intervention group. Control group reported adverse events like hypothermia, mild…2 studies · 389 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
MD -8.06 [-14.26, -1.85]2 studies · 389 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of closed pockets
Short-term (≤ 3 months)
MD -10.05 [-18.78, -1.32]2 studies · 73 participantsUngraded

Metronidazole + SRP vs SRP

Population: Adults with periodontitis (chronic and aggressive)
15 questions
OutcomeEffectEvidenceStatus / GRADE
Percentage of closed pockets
Intermediate-term (> 3 months to < 1 year)
MD -7.00 [-23.57, 9.57]1 study · 22 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -9.00 [-16.59, -1.40]4 studies · 108 participantsUngraded
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
MD -6.90 [-22.10, 8.30]1 study · 22 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Probing pocket depth
Long-term (≥ 1 year)
MD -1.11 [-2.84, 0.61]2 studies · 47 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Adverse events
Long-term (≥ 1 year)
No severe adverse effects were reported by any of the participants in 1 study. 2 studies have not reported adverse events.3 studies · 71 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of closed pockets
Long-term (≥ 1 year)
MD -12.20 [-29.23, 4.83]1 study · 22 participantsVery low
Downgraded: risk of bias, imprecision
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.59 [-0.95, -0.23]4 studies · 94 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.04 [-0.43, 0.50]4 studies · 108 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -1.12 [-2.24, 0.00]3 studies · 71 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Short-term (≤ 3 months)
MD -0.10 [-0.37, 0.16]4 studies · 108 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -4.62 [-18.83, 9.58]2 studies · 45 participantsUngraded
Percentage of closed pockets
Short-term (≤ 3 months)
MD -2.56 [-12.33, 7.22]2 studies · 51 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.49 [-1.29, 0.31]4 studies · 94 participantsUngraded

Azithromycin + SRP vs SRP

Population: Adults with periodontitis (chronic and aggressive)
14 questions
OutcomeEffectEvidenceStatus / GRADE
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -3.32 [-6.23, -0.42]6 studies · 228 participantsUngraded
Percentage of closed pockets
Long-term (≥ 1 year)
MD 2.50 [-10.19, 15.19]1 study · 40 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -0.59 [-1.27, 0.08]2 studies · 110 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Probing pocket depth
Short-term (≤ 3 months)
MD -0.57 [-1.08, -0.07]6 studies · 216 participantsUngraded
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
MD -1.28 [-4.32, 1.76]2 studies · 110 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.60 [-1.02, -0.18]7 studies · 258 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.43 [-0.77, -0.10]7 studies · 258 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
MD -0.77 [-2.33, 0.79]2 studies · 110 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
Percentage of closed pockets
Intermediate-term (> 3 months to < 1 year)
MD -2.90 [-13.91, 8.11]1 study · 40 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Adverse events
Long-term (≥ 1 year)
1 study reported diarrhoea, headache or dizziness, metallic taste, and general unwellness by 4 participants from the intervention group and 3 from the control group. In 1 study none of the participants reported any…2 studies · 110 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -3.18 [-7.01, 0.65]6 studies · 216 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.51 [-0.83, -0.19]6 studies · 216 participantsUngraded

Amoxicillin + clavulanate + SRP vs SRP

Population: Adults with chronic periodontitis
13 questions
OutcomeEffectEvidenceStatus / GRADE
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Long-term (≥ 1 year)
MD 0.10 [-0.17, 0.37]1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
MD 0.00 [-0.09, 0.09]1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD 0.00 [-0.19, 0.19]1 study · 21 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.10 [-0.45, 0.65]1 study · 21 participantsUngraded
Adverse events
Long-term (≥ 1 year)
Included study reported diarrhoea in 2 participants from both groups.1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD 0.10 [-0.51, 0.71]1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Probing pocket depth
Short-term (≤ 3 months)
MD 0.20 [-0.02, 0.42]1 study · 21 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -0.10 [-0.19, -0.01]1 study · 21 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.10 [-0.43, 0.63]1 study · 21 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -0.10 [-0.19, -0.01]1 study · 21 participantsUngraded

Doxycycline + SRP vs SRP

Population: Adults with aggressive periodontitis
13 questions
OutcomeEffectEvidenceStatus / GRADE
Probing pocket depth
Long-term (≥ 1 year)
MD -1.00 [-1.78, -0.22]1 study · 22 participantsVery low
Downgraded: risk of bias, imprecision
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -0.80 [-1.49, -0.11]1 study · 22 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -0.01 [-0.21, 0.19]1 study · 21 participantsUngraded
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Short-term (≤ 3 months)
MD 0.10 [-0.29, 0.50]2 studies · 43 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.61 [-1.14, -0.08]3 studies · 65 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.15 [-0.53, 0.83]2 studies · 43 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.43 [-0.88, 0.01]3 studies · 65 participantsUngraded
Adverse events
Long-term (≥ 1 year)
Included study has not reported adverse eventsNRNo studies
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -0.09 [-0.29, 0.11]1 study · 21 participantsUngraded

Tetracycline + SRP vs SRP

Population: Adults with aggressive periodontitis
11 questions
OutcomeEffectEvidenceStatus / GRADE
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -1.90 [-2.17, -1.63]1 study · 26 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.92 [-2.38, 0.54]2 studies · 64 participantsUngraded
Adverse events
Long-term (≥ 1 year)
Included study has not reported adverse eventsNRNo studies
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Short-term (≤ 3 months)
MD -0.53 [-1.14, 0.08]1 study · 38 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -2.30 [-2.50, -2.10]1 study · 26 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -14.62 [-27.21, -2.03]1 study · 38 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies

Clarithromycin + SRP vs SRP

Population: Adults with periodontitis (chronic and aggressive)
7 questions
OutcomeEffectEvidenceStatus / GRADE
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -4.70 [-8.42, -0.98]1 study · 40 participantsUngraded
Adverse events
Both included trials reported adverse events in the clarithromycin + SRP group: unpalatable taste and mild gastric intolerance in 2 patients (Pradeep 2011); mild gastrointestinal discomfort in 2 patients (Rebelatto…NRUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.65 [-1.20, -0.09]2 studies · 77 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -0.59 [-1.17, -0.01]2 studies · 77 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.64 [-1.26, -0.03]2 studies · 77 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -3.00 [-6.69, 0.69]1 study · 40 participantsUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.67 [-1.33, -0.01]2 studies · 77 participantsUngraded

Moxifloxacin + SRP vs SRP

Population: Adults with chronic periodontitis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Adverse events
The included trial (Ardila 2015) had no adverse events amongst the participants.1 study · 40 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.63 [-0.95, -0.31]1 study · 40 participantsUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.42 [-0.74, -0.10]1 study · 40 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.67 [-1.01, -0.33]1 study · 40 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -3.40 [-3.72, -3.08]1 study · 40 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -0.80 [-1.12, -0.48]1 study · 40 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -0.55 [-0.87, -0.23]1 study · 40 participantsUngraded

Levofloxacin + SRP vs SRP

Population: Adults with chronic periodontitis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -1.38 [-3.30, 0.54]2 studies · 131 participantsUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -1.23 [-1.46, -1.00]2 studies · 131 participantsUngraded
Adverse events
Both included trials (Pradeep 2014; Pradeep 2015) reported dizziness and diarrhoea in the levofloxacin + SRP group.2 studiesUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -1.09 [-1.33, -0.85]2 studies · 131 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -1.02 [-1.39, -0.65]2 studies · 131 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -0.93 [-2.88, 1.02]2 studies · 131 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -1.25 [-1.51, -0.99]2 studies · 131 participantsUngraded

Clindamycin + SRP vs SRP

Population: Adults with aggressive periodontitis
11 questions
OutcomeEffectEvidenceStatus / GRADE
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -1.30 [-2.14, -0.46]1 study · 21 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
MD -1.80 [-2.47, -1.13]1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -1.10 [-1.94, -0.26]1 study · 21 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -1.70 [-2.40, -1.00]1 study · 21 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Adverse events
Long-term (≥ 1 year)
Included study has not reported adverse eventsNRNo studies
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.40 [-0.35, 1.15]1 study · 21 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD 0.10 [-0.55, 0.75]1 study · 21 participantsUngraded
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies

Cefixime + SRP vs SRP

Population: Adults with chronic periodontitis
4 questions
OutcomeEffectEvidenceStatus / GRADE
Adverse events
The only included trial (Dukic 2016) reported nausea, dizziness and/or anorexia in the cefixime + SRP group.1 study · 60 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -0.48 [-0.60, -0.37]1 study · 60 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.19 [-0.77, 0.39]1 study · 60 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -0.02 [-0.11, 0.07]1 study · 60 participantsUngraded

Metronidazole + SRP vs Amoxicillin + metronidazole + SRP

Population: Adults with periodontitis (chronic and aggressive)
7 questions
OutcomeEffectEvidenceStatus / GRADE
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.06 [-1.06, 1.18]1 study · 22 participantsUngraded
Adverse events
All three included trials (Matarazzo 2008; Silva 2011; Xajigeorgiou 2006) reported adverse events in both MTZ + SRP and AMOX + MTZ + SRP groups (nausea, vomiting, diarrhoea, headache, metallic taste, irritability, mild…3 studies · 84 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.07 [-0.40, 0.26]3 studies · 84 participantsUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.26 [-0.83, 0.31]1 study · 22 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD 4.46 [-23.48, 32.40]3 studies · 84 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD 20.85 [3.31, 38.39]1 study · 22 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD 0.10 [-0.12, 0.32]3 studies · 84 participantsUngraded

Doxycycline + SRP vs Amoxicillin + metronidazole + SRP

Population: Adults with aggressive periodontitis
5 questions
OutcomeEffectEvidenceStatus / GRADE
Probing pocket depth
Short-term (≤ 3 months)
MD 0.14 [-0.12, 0.40]2 studies · 50 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.17 [-1.28, 1.62]1 study · 20 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.20 [0.06, 0.33]2 studies · 50 participantsUngraded
Adverse events
One trial (Akincibay 2008) did not report this outcome; Xajigeorgiou 2006 reported mild gastrointestinal discomfort in 2 subjects from the AMOX + MTZ + SRP group.1 studyUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD 0.23 [-0.41, 0.87]1 study · 20 participantsUngraded

Doxycycline + SRP vs Metronidazole + SRP

Population: Adults with aggressive periodontitis
13 questions
OutcomeEffectEvidenceStatus / GRADE
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD 0.38 [0.00, 0.76]3 studies · 75 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.34 [-0.08, 0.76]3 studies · 75 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.12 [-0.72, 0.49]2 studies · 49 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD -0.05 [-0.22, 0.12]1 study · 22 participantsUngraded
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Adverse events
Long-term (≥ 1 year)
Included studies have not reported adverse eventsNRNo studies
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD 1.10 [0.36, 1.84]1 study · 27 participantsVery low
Downgraded: risk of bias, imprecision
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -0.07 [-0.29, 0.15]1 study · 22 participantsUngraded
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Long-term (≥ 1 year)
MD 1.00 [0.30, 1.70]1 study · 27 participantsVery low
Downgraded: risk of bias, imprecision
Probing pocket depth
Short-term (≤ 3 months)
MD -0.16 [-0.56, 0.24]2 studies · 49 participantsUngraded

Clindamycin + SRP vs Metronidazole + SRP

Population: Adults with aggressive periodontitis
11 questions
OutcomeEffectEvidenceStatus / GRADE
Probing pocket depth
Short-term (≤ 3 months)
MD -0.14 [-0.82, 0.54]1 study · 26 participantsUngraded
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.10 [-0.79, 0.59]1 study · 26 participantsUngraded
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.40 [-0.22, 1.02]1 study · 26 participantsUngraded
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Adverse events
Long-term (≥ 1 year)
Included study has not reported adverse eventsNRNo studies
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD 0.20 [-0.55, 0.95]1 study · 26 participantsVery low
Downgraded: risk of bias, imprecision
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.10 [-0.60, 0.80]1 study · 26 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
MD 0.20 [-0.38, 0.78]1 study · 26 participantsVery low
Downgraded: risk of bias, imprecision
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies

Amoxicillin + clavulanate + SRP vs Tetracycline + SRP

Population: Adults with aggressive periodontitis
3 questions
OutcomeEffectEvidenceStatus / GRADE
Adverse events
The only included trial (Abu Fanas 1991) reported there were no adverse events.1 study · 8 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD -1.60 [-14.03, 10.83]1 study · 8 participantsUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.40 [-1.11, 0.31]1 study · 8 participantsUngraded

Clindamycin + SRP vs Doxycycline + SRP

Population: Adults with aggressive periodontitis
11 questions
OutcomeEffectEvidenceStatus / GRADE
Antimicrobial resistance
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Short-term (≤ 3 months)
MD 0.20 [-0.36, 0.76]1 study · 23 participantsUngraded
Clinical attachment level (CAL)
Long-term (≥ 1 year)
MD -0.90 [-1.62, -0.18]1 study · 23 participantsVery low
Downgraded: risk of bias, imprecision
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD -0.40 [-1.15, 0.35]1 study · 23 participantsUngraded
Probing pocket depth
Long-term (≥ 1 year)
MD -0.80 [-1.58, -0.02]1 study · 23 participantsVery low
Downgraded: risk of bias, imprecision
Patient-reported quality of life changes
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Adverse events
Long-term (≥ 1 year)
Included study has not reported adverse eventsNRNo studies
Percentage of bleeding on probing (BOP)
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.40 [-1.14, 0.34]1 study · 23 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD 0.50 [-0.26, 1.26]1 study · 23 participantsUngraded
Percentage of closed pockets
Long-term (≥ 1 year)
Included studies have not reported this outcomeNRNo studies

Amoxicillin + metronidazole + SRP vs Clarithromycin + SRP

Population: Adults with aggressive periodontitis
7 questions
OutcomeEffectEvidenceStatus / GRADE
Adverse events
Two patients were reported to have vomiting and unbearable stomach pain in the AMOX + MTZ + SRP group (Araujo 2019).1 studyUngraded
Probing pocket depth
Intermediate-term (> 3 months to < 1 year)
MD -0.10 [-0.26, 0.06]1 study · 46 participantsUngraded
Percentage of bleeding on probing (BOP)
Intermediate-term (> 3 months to < 1 year)
MD 4.00 [-1.09, 9.09]1 study · 46 participantsUngraded
Clinical attachment level (CAL)
Intermediate-term (> 3 months to < 1 year)
MD 0.00 [-0.26, 0.26]1 study · 46 participantsUngraded
Probing pocket depth
Short-term (≤ 3 months)
MD -0.20 [-0.35, -0.05]1 study · 46 participantsUngraded
Clinical attachment level (CAL)
Short-term (≤ 3 months)
MD -0.60 [-0.86, -0.34]1 study · 46 participantsUngraded
Percentage of bleeding on probing (BOP)
Short-term (≤ 3 months)
MD 5.40 [-0.12, 10.92]1 study · 46 participantsUngraded