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 teeth is most commonly associated with eruption sequestrum? \nSelect and explain. \nA. Permanent second premolar, B. Permanent second molar, C. Permanent first molar, D. Permanent first premolar', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The eruption sequestrum is seen occasionally in children at the time of the eruption of the first permanent molar.\nStarkey and Shafer have described the sequestrum as a tiny spicule of nonviable bone overlying the crown of an erupting permanent molar just before or immediately after the emergence of the tips of the cusps through the oral mucosa.', 'role': 'assistant'}]