Casting titanium partial denture frameworks: A radiographic evaluation

Statement of problem. Titanium is the most biocompatible metal available for dental castings. However, there is some concern about the castability of titanium used on a daily basis. Purpose. A radiographic evaluation of titanium partial denture frameworks was undertaken to ascertain whether these castings were technically acceptable for clinical use. Material and methods. Three hundred Grade II titanium removable partial denture frameworks were cast in a Titec 205M casting machine. All materials were used as directed by the manufacturer, and all castings were made by an experienced titanium specialist. Each casting was evaluated by radiograph. Based on the number, location, and size of argon inclusions, the frameworks were rated as follows: technically acceptable for clinical use as cast; technically acceptable after laser welding modifications; or unacceptable as cast, with remake necessary. Results. Of the 300 titanium frameworks cast, 97% were rated technically acceptable for clinical use in terms of castability. Summary. Within the limitations of this radiographic evaluation, it was determined that the castability of titanium was such that technically acceptable castings could be made on a daily basis.