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 is not a clinical criterion to evaluate treatment outcome? \nSelect and explain. \nA. Absence of a radiolucency, B. No evidence of a sinus tract, C. No swelling present, D. No response to percussion or palpation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Endodontic treatment outcome predictors using\xa0PA\xa0radiographs and CBCT imaging have been shown to vary and also are influenced by patient inclusion and exclusion criteria. Historically,\xa0PA\xa0radiographs and physical examinations were used to determine the success of endodontic treatment,\xa0and the absence of posttreatment periradicular\xa0radiolucencies and symptoms was considered the criterion for success.\nThe clinical criteria to evaluate treatment outcome may be:\n\nNo evidence of a sinus tract\xa0\nNo swelling present\xa0\nNo response to percussion or palpation\xa0\nAbsence of a radiolucency may be a radiologic feature to evaluate the success of treatment.\n\nRef: Cohen pathways of Pulp 11th ed page no 56', 'role': 'assistant'}]