FMX
Pronunciation: eff-em-eks
Also written as: FMX — Full Mouth X-ray (series)
Abbreviation for 'Full Mouth X-ray (series)', a comprehensive set of intraoral radiographs covering all teeth in both arches.
Full Definition
An FMX consists of a standardized series of periapical and bitewing radiographs — typically 14 to 21 images — that provide complete radiographic coverage of the entire dentition. It is used primarily for comprehensive new-patient examinations or for full-mouth periodontal and restorative assessments. Editors working on US dental insurance documentation and clinical records will frequently encounter 'FMX' as the standard abbreviation, always written in uppercase. It should not be confused with an OPG/panoramic radiograph, which provides a single broad image rather than detailed individual tooth images. In UK dental records, the equivalent concept may be described as a 'full-mouth series' or 'FMS'.
Usage
Usage note: Predominantly used in US dental records and insurance forms. Always uppercase. Do not conflate with an OPG, which is a single panoramic image rather than a multi-film series.
In Context
- "An FMX was completed at the new patient examination to establish a comprehensive baseline of radiographic findings." — New patient examination record
- "The insurance carrier approved the FMX under the patient's annual radiographic benefit." — Dental insurance claim form