Which of the following describes the labeling required for contaminated dental models sent to laboratories?

The correct response is that contaminated dental models sent to laboratories must be labeled as "Treat as infectious material." This labeling is critical in dental practice because it communicates essential safety information about the models that may carry pathogens or infectious substances. Proper labeling alerts laboratory personnel to the potential risk of exposure to infectious agents, ensuring that they take appropriate precautions when handling and processing the models.

This practice is part of a broader commitment to infection control and safety standards in dental hygiene and laboratory work. By clearly indicating that materials should be treated as infectious, dental professionals assist in minimizing the risk of cross-contamination and protect the health and safety of laboratory staff.

Labels such as "Handle with care" or "Do not open" may convey caution but do not specifically address the infectious nature of the materials, which is crucial for proper handling protocols. Similarly, labeling something as a "Disposable item" does not adequately inform about safety concerns related to pathogens. Hence, the requirement to treat items as infectious material is vital for maintaining stringent infection control measures in the dental field.