Which does NOT facilitate four-handed dentistry?

In the context of four-handed dentistry, the goal is to optimize the efficiency and effectiveness of dental procedures through teamwork between the dentist and dental assistant. The correct choice indicates that the use of a wide-winged patient chairback does not facilitate this collaborative approach.

Four-handed dentistry relies on the ability of the dentist and assistant to work closely and efficiently together. A wide-winged patient chairback can obstruct movement and visibility, making it challenging for the assistant to provide the necessary support, such as passing instruments or suctioning effectively. The design of the chair should promote ease of access and communication between the two operators.

In contrast, the other options enhance the workflow. Placing the patient in a supine position allows for better access and visibility for both the dentist and the assistant. Arranging seating close to the patient fosters effective communication and allows the assistant to anticipate the dentist's needs. Organizing tray setups with instruments in the sequence of use minimizes delays during procedures, enhancing efficiency.

These practices collectively contribute to the seamless operation of four-handed dentistry, while a wide-winged chair can hinder such coordination.