The author's experience with the swinglock removable partial denture concept is described. This infrequently utilized technique allows the use of undercuts that are unapproachable with other partial denture designs. Indications include missing or weakened key abutment teeth, tooth mobility, aesthetics, economic considerations, and the presence of certain ablative defects following oncologic surgery. The clinician must consider lip position, facial sulcus depth, position of frena, and the periodontal health of potential abutment teeth when considering a swinglock removable partial denture. Specific instructions for blockout, relief, and position of hinge and clasp assemblies should be part of the written laboratory instructions.