denticle vs denticulation

denticle

noun

  • A small tooth. 

  • A pulp stone. 

  • Material serving as the dermis of sharks. 

  • A dentil. 

denticulation

noun

  • A small tooth; a denticle. 

  • The state of being set with small notches or teeth. 

How often have the words denticle and denticulation occurred in a corpus of books? (source: Google Ngram Viewer )