View source for Maxillary second molar

{{Inline|date=July 2014}}
{{Infobox anatomy
| Name        = Maxillary second molar
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| Image       = Maxillary second molars01-01-06.png
| Caption     = Maxillary second molars of permanent and primary teeth marked in red.
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| Precursor   =
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The '''maxillary second molar''' is the [[tooth]] located distally (away from the midline of the [[face]]) from both the [[maxillary first molar]]s of the [[mouth]] but mesial (toward the midline of the face) from both [[maxillary third molar]]s.  This is true only in [[permanent teeth]].  In [[deciduous teeth|deciduous]] (baby) teeth, the maxillary second molar is the last tooth in the mouth and does not have a third [[molar (tooth)|molar]] behind it.  The function of this molar is similar to that of all molars in regard to grinding being the principal action during [[mastication]], commonly known as chewing.  There are usually four [[cusp (dentistry)|cusp]]s on maxillary molars, two on the buccal (side nearest the cheek) and two palatal (side nearest the [[palate]]).  

There are great differences between the [[deciduous teeth|deciduous]] (baby) maxillary molars and those of the permanent maxillary molars, even though their function are similar.  The permanent maxillary molars are not considered to have any teeth that precede it.  Despite being named molars, the deciduous molars are followed by permanent premolars.  The deciduous maxillary second molar is the most likely deciduous tooth to have an oblique ridge.

In the [[Universal numbering system (dental)|universal system of notation]], the deciduous maxillary second molars are designated by a letter written in uppercase. The right deciduous maxillary second molar is known as "A", and the left one is known as "J". The international notation has a different system of notation. Thus, the right deciduous maxillary second molar is known as "55", and the left one is known as "65".

In the universal system of notation, the permanent maxillary second molars are designated by a number.  The right permanent maxillary second molar is known as "2", and the left one is known as "15".  In the [[Palmer notation]], a number is used in conjunction with a symbol designating in which quadrant the tooth is found.  For this tooth, the left and right second molars would have the same number, "7", but the right one would have the symbol, "┘", underneath it, while the left one would have, "└".  The international notation has a different numbering system than the previous two, and the right permanent maxillary second molar is known as "17", and the left one is known as "27".

==References==
*Ash, Major M. and Stanley J. Nelson,  2003. ''Wheeler’s Dental Anatomy, Physiology, and Occlusion.'' 8th edition.

[[Category:Types of teeth]]
[[Category:Human mouth anatomy]]




{{Tooth anatomy}}