Mandibular second molar 3576703 182066812 2008-01-04T08:35:11Z Joedoedoe 4768023 {{Teeth| toothpicture=Image:Mandibular second molars01-01-06.png| text=Mandibular second molars of permanent and primary teeth marked in red.| }} The '''mandibular second molar''' is the [[tooth]] located distally (away from the midline of the [[face]]) from both the [[mandibular first molar]]s of the [[mouth]] but mesial (toward the midline of the face) from both [[mandibular third molar]]s. This is true only in [[permanent teeth]]. In [[deciduous teeth|deciduous]] (baby) teeth, the mandibular second molar is the last tooth in the mouth and does not have a third molar behind it. The function of this [[Molar (tooth)|molar]] is similar to that of all molars in regard to grinding being the principle action during [[mastication]], commonly known as chewing. Though there is more variation between individuals to that of the first mandibular molar, there are usually four [[cusp]]s on mandibular second 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) mandibular molars and those of the permanent mandibular molars, even though their function are similar. It is important to note that the permanent mandibular molars are not considered to have any teeth that precede it. Despite being named molars, the deciduous molars are followed by permanent premolars. In the [[Universal numbering system (dental)|universal system of notation]], the deciduous mandibular second molars are designated by a letter written in uppercase. The right deciduous mandibular second molar is known as "T", and the left one is known as "K". The international notation has a different system of notation. Thus, the right deciduous mandibular second molar is known as "85", and the left one is known as "75". In the universal system of notation, the permanent mandibular second molars are designated by a number. The right permanent mandibular second molar is known as "31", and the left one is known as "18". In the [[Palmer notation]], a number is used in conjunction with a symbol deknown as "47", and the left one is known as "37".and Stanley J. Nelson, 2003. ''Wheeler’s Dental Anatomy, Physiology, and Occlusion.'' 8th edition. [[Category:Teeth]] [[ja:下顎第二大臼歯]] [[nl:Tweede molaar]]