**4. Others**

In the Special Issue, other interesting topics have been developed.

Surgical site infection (SSI) is a frequent complication of surgical procedures. Ceresoli M. et al. [39] have critically analyzed the role of triclosan-coated sutures (TCS) on SSI prevention in abdominal surgery. A cost analysis to provide a more comprehensive representation of the value of this technology in clinical practice has also been reported.

Sender-Janeczek et al. [40] have reported new local drug delivery with antibiotics in the nonsurgical treatment of periodontitis. The effectiveness of the activity of the piperacillin and tazobactam combination in the form of an intrapocket-administered chemotherapy has been assessed.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** I would like to thank all the talented authors and the careful and skilled peer reviewers for their valuable contributions to this Special Issue. It was a pleasure to work with all of you. Thanks to all components of the Editorial team of Applied Sciences. This issue would not be possible without their help, experience and expertise. A special thanks to Tamia Qing, Assistant Editor from MDPI, who always provided me with valid and profitable support with kindness and devotion. Congratulations to all the authors!

**Conflicts of Interest:** The authors declare no conflict of interest.
