What is the function of a film holder during X-ray exposure?

The function of a film holder during X-ray exposure is to stabilize the film and reduce motion blur. When dental X-rays are taken, precise alignment and stability are crucial for obtaining a clear image. The film holder securely keeps the film in the correct position relative to the X-ray source and the area of interest, ensuring that the film does not move during the exposure process. This stability minimizes the risk of motion blur, which would compromise the quality of the radiograph and make it difficult to diagnose dental conditions accurately. The holder also helps maintain the proper distance from the X-ray source, facilitating optimal image quality and reducing the likelihood of distortions.

While film holders do contribute to the overall clarity of radiographs, their primary and most important function is to ensure stability during the exposure. Other functions, such as protection of dental staff or calibration of the X-ray machine, are associated with different equipment and safety measures in the dental setting.