CH. V.] 



STRUCTURE OF TEETH. 



73 



material, dentine or ivory, which is moulded around a central cavity 

 which resembles in general shape the outline of the tooth ; the 



Fig. 93. A. Longitudinal section of a human molar tooth ; c, cement ; d, dentine ; 



e, enamel ; v, pulp-cavity. (Owen.) 

 B. Transverse section. The letters indicate the same as in A. 



Enamel . 



Cement. 



Lower jaw 

 bone. 



Dentine. 



Fig. 94. Premolar tooth of cat in situ. 



