EAL
Pronunciation: ee-ay-el
Also written as: EAL — Electronic Apex Locator
Abbreviation for Electronic Apex Locator, a device that uses electrical impedance measurements to determine the working length of a root canal.
Full Definition
EAL is the widely accepted abbreviation for Electronic Apex Locator in endodontic literature and clinical documentation. The device calculates the distance from the file tip to the apical foramen by measuring electrical resistance or impedance between an in-canal file electrode and a lip clip. Fourth-generation EALs are considered highly accurate even in the presence of irrigating solutions. In editorial contexts, 'EAL' should be spelled out on first use as 'electronic apex locator (EAL)' before the abbreviation is used freely. It should not be confused with 'apex locator' used generically, and editors should verify the author uses the generation numbering consistently.
Usage
Usage note: Define on first use in any document. All capitals, no periods. Do not use as a verb (e.g., 'the canal was EAL-ed' is non-standard).
In Context
- "Working length was confirmed using an EAL (Propex Pixi, Dentsply Sirona) corroborated by periapical radiography." — Endodontic case report methods section
- "On first use in the abstract, the abbreviation EAL must be preceded by its full form, electronic apex locator." — Journal manuscript style guide