connector bar
A rigid or semi-rigid metal bar that joins two or more implant abutments, distributing occlusal forces across the implant system and supporting an overdenture.
Full Definition
A connector bar (or implant bar) is a precision-milled or cast structure that spans between implant abutments to provide a common foundation for an implant-supported overdenture or fixed prosthesis. It serves to splint the implants, redistribute masticatory loads, and provide retentive attachments—such as clip or Hader riders—that engage the prosthesis. The bar must be passively seated across all implants simultaneously; any misfit introduces deleterious stress to the implant-bone interface. Laboratory fabrication involves either direct casting, milling from titanium or cobalt-chromium, or laser welding of prefabricated components. Editors should distinguish 'connector bar' from the 'major connector' of an RPD, which is a different structural component serving a different function.
Usage
Usage note: Distinguish from 'major connector' (RPD) and 'bridge connector' (FPD). In implant prosthodontic documents, 'bar' alone often implies a connector bar, but full terminology should be used in formal reports.
In Context
- "The milled titanium connector bar was verified for passive fit on the master cast before delivery." — Implant laboratory report
- "Clip attachments soldered to the connector bar provided the primary retention for the mandibular overdenture." — Prosthetic design specification