Overdentures are an alternative that can be used if traditional dentures prove to be extremely uncomfortable or if you have a few natural teeth left. Overdentures are fitted over the roots of natural teeth and either rest on these or on dental implants, if there are no natural teeth to fit over. Some find this type of denture more comfortable and they are also easily removable.
Conventional dentures are installed after the last teeth are removed, to allow for healing (typically six to eight weeks). There are typically separate appointments for impressions and measurements; checking a "try-in" model for fit; inserting and adjusting the final denture; and follow-up appointments to check comfort and function. Immediate (same-day) dentures are made in advance and inserted when the teeth are pulled. The University of Iowa provides an overview of immediate dentures[2] and a California dentist has a immediate denture video[3] .
An overdenture is a removable dental prosthesis that covers and rests on one or more remaining tooth roots. A removable partial denture is a dental prosthesis that replaces some teeth and is built around existing natural teeth. Both the overdenture and the removable partial denture may be connected to the remaining tooth roots or remaining natural teeth with anchors made of metal or plastic. These connections improve stability and the retention of both prostheses.