CEMENT 



297 



FIG. 191. Cement and periodontal membrane in an adult tooth 

 g. Granular layer of dentine ; c. cement with Sharpey's fibres ; p. perio- 

 dontal membrane and osteoblasts. ( x 700.) 



FIG. 192. Vascular canals in dentine surrounded by cement. 

 Root of human molar tooth. ( x 150.) 



