Cantilever
A prosthetic component — most often a fixed partial denture retainer or implant-supported crown — that is supported at only one end, with the other end extending unsupported.
Full Definition
In prosthodontic usage, a cantilever describes an extension of a fixed prosthesis that projects beyond its terminal support without a distal abutment. Common clinical applications include implant-supported bridges where a distal pontic extends beyond the last implant fixture and certain resin-bonded bridges. Cantilever designs place unique bending-moment stresses on supporting structures, making accurate use of the term clinically significant. Editors must not confuse 'cantilever' (a structural configuration) with 'overhang' (an excess of restorative material at a margin). The term carries the same spelling in both engineering and dental contexts.
Usage
Usage note: Verify that 'cantilever' refers to a single-end-supported span, not merely a marginal excess or overhang.
In Context
- "The implant-supported prosthesis incorporated a cantilever of 10 mm distal to the last fixture." — Surgical and prosthodontic case report
- "Authors sometimes incorrectly use 'cantilever' to describe any overhanging margin — editors should verify the structural meaning is intended." — Peer-review editorial checklist