Dental compositions (e.g., adhesives, cements, primers, sealants, and etchants) and related methods of use are disclosed herein. The dental compositions can include diamond particles. The diamond particles can have an average size of below 10 microns. In some instances, the dental adhesives can act as a one-part dental adhesive, and can be configured to remove portions of the smear layer and act as an adhesive or bonding agent.