Non-critical items are typically:

Non-critical items in dental practice are defined as those that come in contact with intact skin but do not penetrate mucous membranes or tissues. These items typically require a lower level of disinfection compared to critical and semi-critical items. When non-critical items become contaminated, they should be cleaned and disinfected using intermediate-level disinfectants, ensuring that they are safe for use in the dental environment.

This practice helps maintain a hygienic setting while also following infection control guidelines set forth by health authorities. Such disinfection processes are essential for non-critical items that may come into contact with blood, saliva, or other bodily fluids, thereby preventing the risk of cross-contamination.

The other options describe different categories of items used in dentistry. Surgical procedures and items that penetrate tissues relate to critical and semi-critical items, which require high-level disinfection or sterilization methods. Additionally, the mention of dental impressions is too narrow, as non-critical items can include a range of tools and equipment beyond just the impression materials. Thus, the understanding of non-critical items and their required cleaning methods is essential for effective infection control in dental practices.