Which of the following is a common mode of infection transmission in dental practice?

Contact with saliva and blood is a common mode of infection transmission in dental practice because these bodily fluids can harbor a variety of pathogens, including bacteria, viruses, and fungi. In the dental environment, there is a high likelihood of exposure to these fluids during procedures such as examinations, cleanings, and surgical interventions.

Proper infection control protocols, including the use of personal protective equipment (PPE), sterilization of instruments, and effective surface disinfection, are crucial in minimizing the risk of transmission during dental procedures. The dental team must consistently implement these safety measures to protect both patients and staff from potential infections that can arise from exposure to saliva and blood.

In contrast, other options like sharing utensils, breathing air, and shaking hands represent less direct modes of transmission in the dental setting. While there can be risks associated with these actions, they do not represent the primary concerns for infection transmission compared to direct contact with saliva and blood in the context of dental care.