Fixed denture:
porcelain teeth that are cemented into the tooth vital or endodontically treated tooth lashed by a pin or stud. Or missing teeth that are supported by adjacent teeth (bridge) in porcelain and metal according to the needs of the patient

Removable partial denture:
They are metal structures that hold teeth in acrylic and can be removed from the mouth for cleaning. Dentures are rigid metal structure and both are supported by natural teeth present.

Full denture:
Are fully developed in acrylic denture replacing all teeth in the mouth and are removed for cleaning, these are based on the gums and mucous membranes of the oral cavity.