An instant messaging system is used for nonverbal communication within the dental office. This statement is:

An instant messaging system is indeed used for nonverbal communication within a dental office, making the statement true. Such communication systems facilitate quick and efficient exchanges among staff members without relying on verbal methods like face-to-face conversations or phone calls. This type of communication can enhance collaboration, streamline operations, and ensure that all team members are on the same page regarding tasks and patient care.

In a dental office setting, instant messaging helps staff coordinate schedules, share important updates, and relay information without causing disruptions to patient care. It also allows for a silent way of communicating that can be essential in a clinical environment where quietness is often preferred.

The other options might imply a limitation on the scope or context of instant messaging that doesn't reflect its overall usefulness in a busy dental practice. By recognizing the versatile role of instant messaging for all staff communication, the identified answer accurately captures its purpose and application in the office environment.