What classification does an external dental x-ray head fall under?

An external dental x-ray head is classified as non-critical because it does not come into contact with mucous membranes or broken skin. In the context of infection control, items are categorized based on the level of infection risk associated with their use. Non-critical items are those that only touch intact skin, meaning they pose a minimal risk of transmitting infection.

The rationale behind this classification is linked to how different instruments and materials interact with the patient's body during dental procedures. Since the x-ray head is positioned outside the patient's mouth and does not make direct contact with any potentially infectious areas, it does not require the same degree of disinfection or sterilization as critical or semi-critical items that have a higher risk of contamination. Non-critical items usually require cleaning and low-level disinfection, making this classification a practical choice for safety and hygiene protocols in dental settings.