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   Earliest Record of Dental Disease      
“齿”(tooth), “龋” (caries) in oracle-bones on a stone rubbing
  Earliest Record of Dental Disease“ ”indicates “caries”, "" indicates“insect disease”.  
Background information
Oracle-bone inscriptions were discovered by Wang Yanrong
Portrait of Wang Yanrong, expert on metals and stones in the late Qing Dynasty (1644-1911), who discovered oracle-bone inscriptions containing medical knowledge among fossil fragments.

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