Patients with ectodermal dysplasia or having undergone cleft surgery with anodontia or hypodontia, hypoplastic conical teeth and patients with severely worn dentition are difficult to treat because of the poor remaining tooth structure. These patients often exhibit loss of vertical dimension of occlusion and aesthetic problems and usually need complex prosthetic treatments. Financial constraints or other priorities often restrict one from choosing the most desirable treatment. The overlay removable denture is a covering prosthesis partially supported by natural teeth, tooth roots, or dental implants, providing an efficient alternative of treatment. Clinical reports describe the various applications of overlay dentures.