
【joe極白】評論
【Hint】 RPA(rest.proximal plate.Akers clasps) Clasp assemblies that accommodate functional prosthesis movement are designed to address the concern of a Class I lever.(A) The retaining clasp arm should be located in the gingival third of the buccal or labial surface of the abutment in a 0.01-inch undercut. (D,故 C 為錯)【出處】McCracken‘s Removable partial prosthodontics P.73-77