Rubber Dam
An isolation device consisting of a latex or non-latex sheet stretched over the treatment tooth to provide a sterile operating field and prevent contamination of the root canal.
Full Definition
The rubber dam is a thin, flexible sheet—most commonly made of latex, though non-latex nitrile alternatives exist—punched, clamped, and stretched over the treatment tooth to isolate it from oral fluids and microorganisms during endodontic procedures. Its use is considered the standard of care in endodontics, preventing irrigant ingestion, instrument aspiration, and salivary contamination of the canal. In editorial contexts, the term is always hyphenated ('rubber dam' without a hyphen is seen in some texts, but the hyphenated form 'rubber-dam' is used adjectivally: 'rubber-dam isolation'). Editors should also recognize 'dental dam' as a widely accepted synonym.
Usage
Usage note: As a noun: two words, no hyphen ('rubber dam'). As a compound modifier: hyphenate ('rubber-dam isolation'). 'Dental dam' is an equally accepted synonym. Do not use 'rubber dam' to mean isolation generically.
In Context
- "Rubber dam isolation is mandatory for all root canal procedures to prevent microbial contamination of the operative field." — Endodontic clinical protocol
- "When used as an adjective before a noun, hyphenate: 'rubber-dam clamp,' 'rubber-dam frame.'" — Journal editorial style guide