noun
endodontist; root-canal specialist
A dentist who specializes in treating the inside of the tooth, especially root canals.
歯内療法専門医は根管治療を専門としている。
An endodontist specializes in root canal treatment.
歯科医 is a general dentist, while 歯内療法専門医 is a specialist in endodontics.
Compound of 歯内療法 (endodontics) and 専門医 (specialist).