Skeletal or Vizil prosthesis is used when some teeth are missing. For example, there are front teeth, but side teeth are missing.
Skeletal prosthesis consists of metal part connecting two sides of prosthesis. At sides there are connections which can be:
Esthetically, slides seem to be the best solution, since teeth have natural look. Less esthetic, but cheaper solution is hooks, since they are visible. Prosthesis should be removed so as to be cleaned, which means that hygiene is very important.