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: Forensic Medicine
First permanent teeth to erupt is: September 2008 
Select and explain. 
A. First premolar, B. Second premolar, C. First molar, D. Second molar
C: First molar
Answer: C: First molar 
Explanation: Ans. C: First molar At the age of about 6-7 year, first permanent molar teeth erupts behind the second temporary molar. At the age of 9, there are 12 permanent teeths. At the age of 11, there are 20 permanent teeths At the age of 14, there are 28 permanent teeths