歯周 ししゅう治療 ちりょう がくじゃありませんでした
shishūchiryōga kuja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 歯周治療学

1. Was not periodontology.; Was not a periodontist.

Past/Perfective
Negative
Polite
Terminal Form