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PROXIMAL CAVITIES IN INCISORS INVOLVING ANGLE 85
First Plan of Angle Restoration. (Class Four.)
The first plan of anchorage is made by undercutting the incisal
edge. This plan is indicated in teeth of rather thick incisal edge
that are rather short and stocky as they have a greater body of den-
tine near the angles upon which to depend.
f
o
Fig. -13.—Cavity of Class Four, plan one, for cohesive gold.
Fig. 44. -Class Four, plan one, cavity filled. Labial and lingual views.
Cavity shown in Fig. 43.
As a rule the horns of the pulp in such teeth are Avell retracted, at
lea.st in adult mouths, and there is less danger of pulp exposure as
compared with the teeth of thin edges and angular outline. If this
plan has been decided upon, the cavity should be cut well to the
