Correct horizontal angulation when exposing a bitewing radiograph refers to directing the x-ray beam where?

Correct horizontal angulation when exposing a bitewing radiograph refers to directing the x-ray beam through the contacts of two adjacent teeth. This specific angulation is crucial because it allows for the most accurate depiction of interproximal surfaces, minimizing overlap and revealing carious lesions between teeth. By directing the beam properly, the radiograph provides a clear visualization of these contact areas, which are often difficult to assess clinically.

When the x-ray beam is aligned correctly through the contacts, it ensures that the diagnostic information captured is as informative as possible. If the beam is directed incorrectly, such as towards the roots of the teeth or over the entire film, it can result in overlapping images or unnecessary distortion, compromising the quality of the radiographic assessment. Therefore, focusing the beam through the contacts is essential for effective bitewing radiography, enabling better detection of dental issues.