Purpose:This article presents clinical guidelines for restoring structurally
compromised teeth and dentitions to reduce the risk for fatigue-caused failures in
connection with prosthetic reconstructions. Materials and Methods:Based on the best
scientific evidence available and clinical expertise acquired through experience and
practice, biomechanical principles are elucidated from a prosthetic aspect. Results:In
prosthetic treatment in the structurally compromised dentition, all efforts need to be
focused on protecting the abutments and reconstruction from future fatigue failures. A
modified, “therapeutic” occlusion to avoid nonaxial forces may then be prudent.
Conclusion:By lending the prosthesis a favorable occlusal design, the nonaxial forces
may be markedly reduced, and the teeth, cement, and restorative materials will be less
susceptible to fatigue failures. Int J Prosthodont 2004;17:135–141.