vertical angulation


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Related to vertical angulation: horizontal angulation

vertical angulation

Etymology: L, vertex + angulus, corner
the angle within the vertical plane, relative to a reference in the horizontal or occlusal plane, at which the central x-ray beam is directed during radiography or dental imaging of oral structures. Compare horizontal angulation.

vertical angulation

The position of the dental x-ray tube head in the vertical plane, measured in degrees. The central ray is directed perpendicular to the film and the tooth when using the paralleling imaging technique. When using the bisecting angle technique, the central ray is directed perpendicular to the bisector. Errors in calculating the vertical angulation produce elongated or foreshortened images.
See also: angulation
References in periodicals archive ?
It was noted that there were more vertical angulation errors (n=48) with the CCD system when exposing projections in the anterior portion of the mouth than with the film system (n=9).
It was noted that there were more horizontal angulation and placement errors (79 and 22, respectively) with the film system and more vertical angulation errors (n=91) with the CCD system.
No vertical angulation errors occurred using the film system in the bitewing projections.

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