horizontal angulation


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Related to horizontal angulation: vertical angulation

horizontal angulation

The position of the dental x-ray tube head in the horizontal plane. To avoid errors in x-ray interpretation, the central ray is directed perpendicular to the curve of the dental arch and film. Correct horizontal angulation produces a radiograph with “open” contacts. Incorrect horizontal angulation produces a radiograph with “overlapped” contacts.
See also: angulation
References in periodicals archive ?
When the devices were compared based on technical performance there was not a consistent pattern seen where one device outperformed the other with respect to packet placement, vertical angulation or horizontal angulation errors.
A slightly greater number of receptor placement and horizontal angulation errors occurred when using the film system compared to the same technique errors with the CCD system--175 and 123, respectively.
No horizontal angulation errors were identified when exposing projections with the film system.
It was noted that there were more horizontal angulation errors with both systems--50 with the film system and 44 using the CCD system.
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