Statistical investigation of lower distal free-end denture design used by general practitioners in Japan

Tooth loss eventually occurs in most adults, and masticatory function is restored with a prosthesis such as a fixed crown & bridge, removable partial denture (RPD), or complete denture according to the extent of loss. For the RPD there are different structural-element combinations and different designs that can be applied to the same loss pattern, so that the effect and prognosis vary. Results from a statistical investigation of removable distal free-end dentures in Japan suggested that in many cases, insufficient consideration was given to mechanical stability and protection of remaining peripheral tissue in the design of removable partial dentures.