A reinforcement for a dental restoration substructure is provided. The
reinforcement is a generally annular structure that protrudes from the
body of the substructure generally near an occlusal portion of the
restoration. The annular structure provides a support for veneering
porcelain at the location of the greatest thickness of the porcelain and
at the location where occlusal stress is applied, and fractures of
veneering porcelain are commonly experienced.