n :  a fifth cusp sometimes found on the lingual surface of the upper second deciduous molars and the upper first permanent molars
 
Carabelli, Georg (1787-1842), Hungarian dentist. Carabelli was a professor of dental surgery in Vienna. The tubercle of Carabelli was first illustrated in his text of oral anatomy, published in 1842, and was first described in writing in his handbook of dentistry, published posthumously in 1844.
 
 
 
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