The Cusp of Carabelli is an accessory lingual cusp that can be found on the upper second deciduous molars and the upper first, second, and third permanent molars. It can occur unilaterally or bilaterally and can vary significantly in size. Rarely, a similar accessory cusp called a protostylid can be seen on lower permanent or deciduous molars.
2. General information
• It is accessory lingual cusp located on the mesio
palatal cusp of maxillary second deciduous
molars and first second and third permanent
molars
• It may be unilateral or bilateral, with marked
deviation in size.
• In some cases, accessory cusp is seen
occasionally on mandibular permanent or
deciduous molar
• this is called as protostylid