To compare the antimicrobial efficacy of semiconductor laser irradiation combined with sodium hypochlorite irrigation versus sodium hypochlorite irrigation alone for eliminating E. faecalis in root canal therapy, highlighting the potential for improved treatment outcomes.
Key Findings:
Both groups showed significant reductions in bacterial load (p < 0.001), indicating the effectiveness of both treatments.
The laser group had a greater bacterial reduction rate (98.7% vs. 89.4%, p < 0.001), suggesting enhanced efficacy.
Complete elimination rate of E. faecalis was higher in the laser group (92.2% vs. 74.5%, p = 0.018), indicating a potential for better clinical outcomes.
Healing rates at 6-month follow-up were superior in the laser group (90.2% vs. 76.5%, p = 0.043), reinforcing the clinical relevance of the findings.
Multivariate logistic regression identified laser treatment, initial bacterial load, and tooth type as significant predictors of E. faecalis elimination, emphasizing the complexity of treatment outcomes.
Interpretation:
Semiconductor laser irradiation combined with sodium hypochlorite irrigation is significantly more effective in eradicating E. faecalis and improving clinical outcomes compared to sodium hypochlorite irrigation alone.
Limitations:
The study is retrospective and may have inherent biases, particularly in patient selection and treatment allocation.
E. faecalis is only one component of the complex endodontic microbiota, limiting the generalizability of findings to other pathogens.
Long-term follow-up data are needed to confirm the stability of results and the durability of treatment effects.
Conclusion:
The combination of semiconductor laser treatment and sodium hypochlorite irrigation offers enhanced antimicrobial efficacy against E. faecalis, suggesting a potential improvement in root canal treatment outcomes. Further research is warranted to validate these findings across diverse clinical settings.
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