Which one of the following is not required to produce a digital image of a tooth?

To produce a digital image of a tooth, a film is not required because digital imaging relies on electronic sensors to capture the image rather than traditional film that is used in conventional radiography. The sensor plate, which is used in digital radiography, acts as a substitute for film, capturing the image electronically.

In addition, digital imaging often employs a digital holder to keep the sensor in place during the procedure, ensuring accurate positioning and minimizing patient movement. Furthermore, a rectangular collimator is used in conjunction with digital imaging to help focus the X-ray beam and reduce radiation exposure to surrounding tissues, which enhances the quality of the image. This technical setup highlights the differences between film-based and digital imaging methods, where the latter does not rely on physical film for image production.