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MODELING IN CLAY 25

lingual inclination of the lower teeth of the same denomina-

tion (Fig. 32).
24. Make a drawing of a longitudinal section of a central
incisor, showing the enamel, dentin, cementum and pulp

(Fig. 33)-

b--'

Fig. 33.—Upper central incisor. Proximal surface. A, Enamel; B, dentin; C,
cementum; D, pulp. (Diagrammatic.)

Modeling in Clay

The teeth are to be modeled to Black's measurements,

enlarged five times. The rough molding to form is first
done on the modeling board with the hands, when the finer