12 



Teeth. 



6-8 Month 

 -9M. 



16-20 M. 



338 a. Diagram of the Eruption of the Milk Teeth. 



After H. Welcker. 



8 Year 



-13 Y. 



-15 Y. 



338 b. Diagram of the Eruption of the Permanent 



Teeth. After H. Welcker. 



