Occlusal Overload
The application of occlusal forces that exceed the biomechanical tolerance of an implant–bone interface or prosthetic component, risking marginal bone loss or mechanical failure.
Full Definition
Occlusal overload occurs when the magnitude, direction, or frequency of masticatory or parafunctional forces applied to an implant-supported prosthesis surpasses the adaptive capacity of the supporting bone or the structural limits of prosthetic components. It is implicated in both crestal bone loss and prosthetic complications such as screw fracture. In editorial contexts, 'occlusal overload' is a compound noun and is not hyphenated. Editors must distinguish it from 'occlusal loading', which is the deliberate clinical application of controlled forces — often as a therapeutic protocol — rather than an adverse event.
Usage
Usage note: Not hyphenated as a noun. Clearly distinguish from 'occlusal loading', which is a deliberate protocol, not an adverse event.
In Context
- "Radiographic evidence of rapid crestal bone loss was attributed to occlusal overload secondary to undetected bruxism." — Complication report
- "'Occlusal overload' must not be used as a synonym for 'occlusal loading' — the former implies pathological excess, whereas the latter is a planned prosthetic event." — Style guidance note