歯し内ない治ち療りょう学がくMeaningsNoun1. endodontolgoy; endodonticsKanji used歯tooth内inside治rein in療therapy学studyComposed of歯しtooth; age; yearsNoun内ないwithin ...; inside ...Suffix治ち療りょう(medical) treatment; care; therapy; cure; remedyNoun学がくlearning; scholarship; study; erudition; knowledge; education; study of ...; -ology; -icsNoun