Bitewing Radiograph
A dental X-ray taken with the patient biting on a tab, capturing the crowns and crestal bone of both upper and lower posterior teeth on a single image.
Full Definition
A bitewing radiograph (BW) is a standard intraoral radiographic projection used primarily to detect interproximal caries and to assess the height of crestal bone. The film or sensor is stabilised by a tab that the patient bites down on, hence the name. Bitewings typically show the premolar and molar regions and are taken as a horizontal pair or posterior series. Editors should note that 'bitewing' is one word, not hyphenated or two words, and should not be abbreviated to 'BW' without prior expansion in formal clinical documents. It must not be confused with a periapical (PA) radiograph, which shows the root apex.
Usage
Usage note: 'Bitewing' is always one word; do not write 'bite-wing' or 'bite wing'. The abbreviation BW should be expanded on first use.
In Context
- "Four posterior bitewing radiographs were taken as part of the patient's initial comprehensive examination." — Patient examination record
- "The bitewing radiograph series should be retaken at 24-month intervals for low-caries-risk adult patients." — Radiographic guidelines document