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vergent (Fig. 63). The occlusal margins are beveled to form slight
obtuse angles with the axial walls. In case additional retentive re-
sistance is required, a post may be inserted in one canal and permitted
to extend far enough into the porcelain to give a strong retention.
While this gives an entire crown of porcelain, the principle of con-
struction is the same as applied to that of inlays.
























































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