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A mouth mirror or dentist's mirror is an instrument in dentistry commonly used in the dental armamentarium. The head of the mirror is usually round, and the most common sizes used are the No. 4 and No. 5. A No. 2 is sometimes used when a smaller mirror is needed, such as when working on posterior teeth with a dental dam in place. The mouth mirror has a wide range of uses. Three of its most important functions are allowing indirect vision by the dental health care provider, reflecting light onto desired surfaces, and retraction of soft tissues.
Additional recommended knowledge
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.
Additionally, the mouth mirror is used to retract tissues, such as the tongue or cheeks, to gain better visualization of the teeth.
Dentist's mirrors are also commonly used by engineers to allow vision in tight spaces and around corners in equipment. They are a common tool in optics and laser labs as well.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mouth_mirror". A list of authors is available in Wikipedia.|