Notes on Tooth Supported Overdenture

A removable partial denture or complete denture that covers and rests on one or more remaining natural teeth the roots of natural teeth and /or dental implants. A prosthesis that covers and is partially supported by natural teeth natural tooth roots and or dental implants - called also overlay denture overlay prosthesis superimposed prosthesis. An overdenture is a denture that may be supported by soft tissue bone the root of a tooth or a modified tooth. In 1978 Louis Rissin studied the masticatory performance by over denture which is found to be one-third higher than normal denture. Various terms have been used to describe this treatment modality: overlay denture telescoped dentures tooth supported dentures hybrid prosthesis crown and sleeve prosthesis biologic prosthesis and superimposing dentures. Patients with a poor prognosis for complete dentures when the palatal vault is high and the ridges slope. When the mandible has a poorly defined sublingual fold space the floor of the mouth drapes and the tongue falls back positive retention and stability can be hard to attain.