Treatment of Periodontal Disease and Prevention of Preterm Birth: Systematic Review and Meta-analysis
Bibliographic record
Abstract
OBJECTIVE: There is a controversy regarding the benefits of periodontal treatment during pregnancy. We aimed to evaluate its effect on the risk of preterm birth and to explore the heterogeneity between studies. STUDY DESIGN: A systematic review and meta-analysis of randomized controlled trials were performed. Studies in which women were randomized for periodontal treatment versus no treatment were included. Pooled risk ratios (RRs) with their 95% confidence intervals (CIs) were calculated using random-effect models. A sensitivity analysis was performed. RESULTS: Twelve randomized trials were included in the meta-analysis. Pooled estimates showed no significant reduction of preterm birth with periodontal treatment (RR: 0.89; 95% CI: 0.73 to 1.08). However, the substantial heterogeneity among studies (I2 = 52%) could be explained either by the risk of bias, the level of income, or by the use of chlorhexidine mouthwashes as a cointervention. Daily use of chlorhexidine mouthwash was associated with a reduction of preterm birth (RR: 0.69; 95% CI 0.50 to 0.95), with moderate heterogeneity among the five studies included (I2 = 43%). CONCLUSION: There is an important heterogeneity between randomized trials that evaluated the effect of periodontal treatment on the risk of preterm birth. Chlorhexidine mouthwash as a preventive agent should be further evaluated.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.011 | 0.003 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".