What size film is specified as 1 1/4 x 1 5/8?

The specified film size of 1 1/4 x 1 5/8 inches corresponds to No. 2 film. This size is commonly used in dental radiography, particularly for periapical and bitewing radiographs. No. 2 films are versatile and suitable for a wide range of dental imaging needs, making them a standard choice for practitioners.

In comparison, other film sizes such as No. 0, No. 3, and No. 4 are used for different purposes. No. 0 films are smaller, typically used for children or for capturing smaller areas in the mouth. No. 3 films are larger and often employed in bitewing radiography for full coverage of posterior teeth, while No. 4 films are significantly larger and are designed for specific situations like panoramic imaging. Understanding the dimensions and uses of different film sizes is crucial for selecting the appropriate film in dental practices.