title: An 18-month clinical evaluation of semiprecious and nonprecious alloy restorations.
abstract: SEM studies indicate that the control alloy, Minigold, WLW, and Litecast metals presented similar results in relation to marginal fit when proper techniques are followed. Clinical evaluation based on the criteria of gingival irritation, patient sensitivity, and abrasion demonstrated no statistically significant differences between the casting alloys tested and the control. The control alloy had significantly fewer restorations with tarnish and corrosion than either WLW or Litecast. There was no significant difference between the control alloy and Minigold in terms of tarnish and corrosion.
mesh_terms: D000497:Alloys; D002858:Chromium Alloys; D003343:Corrosion; D003442:Crowns; D003722:Dental Alloys / Q000009:adverse effects*; D005891:Gingivitis / Q000209:etiology; D006047:Gold Alloys / Q000009:adverse effects*; D006801:Humans; D007284:Inlays; D013499:Surface Properties; D014098:Toothache / Q000209:etiology
chemical_list: D000497:Alloys; D002858:Chromium Alloys; D003722:Dental Alloys; D006047:Gold Alloys