<Tr> <Th> FMA </Th> <Td> 55638 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The molars or molar teeth are large, flat teeth at the back of the mouth . They are more developed in mammals . They are used primarily to grind food during chewing . The name molar derives from Latin, molaris dens, meaning "millstone tooth", from "mola", millstone and dens, tooth . Molars show a great deal of diversity in size and shape across mammal groups . </P> <P> In humans, the molar teeth have either four or five cusps . Adult humans have twelve molars, in four groups of three at the back of the mouth . The third, rearmost molar in each group is called a wisdom tooth . It is the last tooth to appear, breaking through the front of the gum at about the age of twenty, although this varies from individual to individual . Ethnicity can also affect the age at which this occurs, with statistical variations between groups . In some cases, it may not even erupt at all . </P>

Where are the molars located in the mouth