denticle vs odontiasis

denticle

noun
  • A dentil. 

  • A pulp stone. 

  • Material serving as the dermis of sharks. 

  • A small tooth. 

odontiasis

noun
  • Cutting of the teeth; dentition. 

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