cleanness of teeth. Put by Figure of speech Metonymy (of Adjunct), App-6, for famine.
yet have ye not. &c. Note the Structure above, showing the Figure fo Speech Amoeboeon (App-6). Compare Isaiah 26:11.Jeremiah 5:3.Haggai 2:12.
Related Commentaries of Amos 4:6
Amos 4:6
6 And I also have given you cleanness of teeth in all your cities, and want of bread in all your places: yet have ye not returned unto me, saith the LORD.