This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Which of the following restoration is best for a tooth which is planned to be an abutment for RPD? \nSelect and explain. \nA. Amalgam restoration, B. Cast metal restoration, C. Glass ionomer cement, D. Composite restoration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Removable Prosthodontic Abutment:\nTeeth that are to serve as abutments for a removable partial denture can be restored with cast-metal restorations. The advantages of cast restorations are as follows:\xa0\n\nThe superior physical properties of cast-metal alloys allow restorations to better withstand forces imparted by a partial denture.\nRest seats, guiding planes and other aspects of contour relating to partial dentures are better controlled when the indirect technique is used.\n\nSturdevant operative dentistry\xa0 7th Edition, Page No:e122', 'role': 'assistant'}]