Below you can find the Bacteria saliva & food debris make up this rough sticky coating on teeth which can harden into tartar Jeopardy Words Answer. The answer to Bacteria saliva & food debris make up this rough sticky coating on teeth which can harden into tartar has 6 letters. This clue belongs to the Can't smile without you category and is part of Jeopardy Word Level 347. If you scroll near the bottom you will find other clues and answers part of level 347