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
Which of the following teeth is most commonly associated with eruption sequestrum? 
Select and explain. 
A. Permanent second premolar, B. Permanent second molar, C. Permanent first molar, D. Permanent first premolar
C: Permanent first molar
Answer: C: Permanent first molar 
Explanation: The eruption sequestrum is seen occasionally in children at the time of the eruption of the first permanent molar.
Starkey 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.