Had a feeling that 7A7AProsthetic covering for a tooth[-----] was CROWN7AProsthetic covering for a tooth[-----], and knowing NNN5DInternet challenge of abstinence that occurs at the same time as Movember (abbr.)[---] made me figure everything out. But I did turn the overthinking dial up to 11 during the solve because I thought you were asking for CHARLIE CHAPLIN's hat. I guess a CROWN7AProsthetic covering for a tooth[-----] doesn't really make me think "hat", but alliteration > clue accuracy, am I right?
I also need to know what OOO3DUnlikely tic-tac-toe line[---] has to do with rock-paper-scissors, unless "Rochambeau" can also refer to tic-tac-toe (and even then, why would it be an "unlikely" line?)