Indirect vision is needed in certain locations of the mouth where visibility is difficult or impossible. The posterior (or lingual) surfaces of the anterior maxillary teeth is a notable area where mouth mirrors are often employed. Other areas of the mouth can be viewed more readily with the mouth mirror, even though it would be possible to see them if the dentist or dental hygienist adjusted their body into a poor position. Without the mouth mirror, poor body positioning would occur daily and lead to chronic musculo-skeletal problems, especially of the back and neck.
There are other areas of the mouth where lighting is difficult, even with the over head lights used regularly in dental offices. In these instances, the mouth mirror is used to reflect light onto those surfaces. This is especially useful if the mirror is simultaneously being used for indirect vision of an obscure area.
Clinical Techniques of Performing Suctioning Tasks and of Positioning the High Volume Evacuation (HVE) Attachment and Inlet When Assisting a Dentist: A Guide for Dental Assistants: Part 2
Nov 01, 2011; When assisting a dentist, an assistant may need to hold the high volume evacuation (HVEj attachment and use it to suction...