The document provides a comprehensive overview of the diagnosis and treatment planning for completely edentulous arches, emphasizing the importance of evaluating a patient's overall health—physical, mental, and social—in relation to their dental treatment. It outlines various diagnostic procedures, including clinical examinations and patient history, while highlighting the necessity for tailored treatment plans based on individual patient evaluations and conditions. Additionally, it discusses specific factors such as systemic diseases, mental attitudes, and other findings that can influence the success of prosthodontic treatments.