title: A quantitative and subjective characterization of tarnishing in low-gold alloys.
abstract: 1. The quantitative objective characterization of tarnish gave results which are identical with those obtained from a blind subjective analysis. 2. The low-gold alloys fall into three classes. The alloy Ney Cast III is superior in performance to the other low golds and approximately equivalent to the high-gold alloy Firmilay. The intermediate alloys, including Midacast, Stabilor G, Mowrey No. 46, Tiffany, and Midas are similar in performance to the high-gold alloy Rx O.R.Y. The low-gold alloys Dent Cast 44, Minigold, and Progold tarnish in a manner which, in our opinion, makes them unacceptable.
mesh_terms: D003722:Dental Alloys; D006047:Gold Alloys / Q000592:standards*; D010084:Oxidation-Reduction; D013499:Surface Properties; D013997:Time Factors
chemical_list: D003722:Dental Alloys; D006047:Gold Alloys