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Microbiological Retention on PTFE versus Silk Suture: A Quantitative Pilot Study in Third Molar Surgery.
Stefano Parrini1, Alessandro Bovicelli2, Glauco Chisci1
1Oral Surgery School, Dentistry and Dental Prosthodontics, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy.
Antibiotics (Basel, Switzerland)
|March 29, 2023
Summary
Polytetrafluoroethylene polymer (PTFE) sutures showed superior performance over silk sutures in reducing bacterial biofilm after mandibular third molar surgery. This finding suggests PTFE may be a better choice for minimizing bacterial retention in oral surgical wounds.
Area of Science:
- Oral and Maxillofacial Surgery
- Microbiology
- Biomaterials Science
Background:
- Mandibular third molar (M3M) removal is a common oral surgery procedure.
- Postoperative complications, including bacterial infection, are a concern.
- Surgical sutures play a role in wound healing and bacterial carriage.
Purpose of the Study:
- To compare the bacterial carrying capacity of silk and polytetrafluoroethylene polymer (PTFE) sutures.
- To assess the effectiveness of different suture materials in reducing bacterial biofilm after M3M surgery.
Main Methods:
- Prospective quantitative study involving 10 healthy patients undergoing M3M surgery.
- Silk and PTFE sutures were placed post-surgery and removed after 7 days.
- Bacterial colony-forming units (CFUs) were quantified in laboratory analysis for aerobic and anaerobic bacteria.
Main Results:
- Bacterial retention was statistically significantly greater in silk sutures compared to PTFE sutures.
- This difference was observed in both aerobic (Brain Heart Infusion) and anaerobic (Wilkins-Chalgren) samples.
- No major complications or suture loss occurred in any patient.
Conclusions:
- PTFE sutures are superior to silk sutures in reducing bacterial biofilm after M3M surgery.
- PTFE sutures demonstrate better performance in minimizing bacterial retention in oral surgical sites.
- The findings support the use of PTFE sutures for potentially improved outcomes in M3M procedures.

