Anti-infective therapy in periodontics

Anti-infective therapy in periodontics plays a crucial role in controlling periodontal infections, reducing pathogenic microorganisms, and preventing the development of antimicrobial resistance. Periodontal diseases are primarily polymicrobial, biofilm-associated infections that require a comprehensive treatment approach. Antibiotics must achieve adequate concentrations in gingival crevicular fluid and periodontal tissues to effectively inhibit or eliminate susceptible bacteria. Dosage selection depends on pharmacokinetic and pharmacodynamic parameters, including drug absorption, distribution, metabolism, elimination, and the minimum inhibitory concentration. Patient-specific factors, such as age, systemic health, renal and hepatic function, allergies, and concurrent medications, should also be considered. Commonly prescribed antibiotics include amoxicillin, metronidazole, doxycycline, and azithromycin, each requiring appropriate dosing schedules and treatment durations. Antibiotics should primarily be used as an adjunct to mechanical periodontal debridement and are particularly indicated in selected cases of severe periodontitis, acute periodontal infections, or systemic involvement. Microbiological culture and susceptibility testing may be beneficial in complicated or treatment-resistant cases. Furthermore, antimicrobial stewardship principles emphasize the judicious selection of antibiotics, appropriate dosing, and avoidance of unnecessary prescriptions. Ultimately, individualized antibiotic therapy improves clinical outcomes, minimizes adverse effects, and helps preserve the long-term effectiveness of antimicrobial agents in periodontal care.