EXAMI\ATION OF THE MOUTH FOR AGE. 



8.> 



cisors (see Fig. 15) push out, from behind, the milk 

 ones, the fangs of which, being squeezed between tlui 

 jaw and the new teeth, waste away ; so that the milk- 

 teeth, usually, readily drop out. They may, however, 



Fig. 15. — Longitudinal section of the jaws, showing the respective 

 position of the milk incisors, and of tlie permanent ones. 



remain as a second row in front, and should, in this 

 case, be removed by some suitable instrument. 



3. The teeth show wear. The tables of the permanent 

 incisors, as they become rubbed down, change their form 

 in the manner alluded to on page 79, and as illustrated 



