Stress-Breaking Attachment — NDEB AFK MCQ
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Correct answer: E — To allow independent movement between the distal extension base and the rigid framework, distributing forces to the residual ridge
A stress-breaking (stress-relieving) attachment allows some degree of independent movement between the distal extension denture base (which is tissue-supported) and the rigid major connector and abutment teeth (which are tooth-supported). This permits the denture base to move slightly under occlusal load, transmitting forces to the residual ridge through the mucosa rather than concentrating destructive forces on the abutment teeth. The mesial rest concept (rest on the mesial surface of the abutment) functions similarly by directing forces along the tooth's long axis.
Reference: Carr – McCracken's Removable Partial Prosthodontics, 13th ed., 2015