**5. Conclusions**

The number of publications exploring the effects of SDF on oral biofilm is limited, although SDF has been used as a caries-arresting agent with antibacterial properties. The limited publications reported that SDF prevented bacterial adhesion to teeth, inhibited the growth of cariogenic and periodontal bacteria, and possessed antifungal properties.

**Author Contributions:** Writing—original draft preparation, J.Z. and S.-R.G.; writing—review and editing, C.-H.C., E.C.-M.L., and I.X.Y.; supervision, C.-H.C. All authors have read and agreed to the published version of the manuscript.

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

**Informed Consent Statement:** Not applicable.

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