Why couldn't Beast Boy, Robin, Starfire, and/or Cyborg think about calling Trigon for help with Raven's cracked tooth? After all, Cyborg's meatball "glue" isn't a permanent solution.
...Maybe because they sent Trigon to another dimension? Seriously, why they want Trigon to help after what happened in "Dog Hand"? Trigon would never help them after that happened and even if he did, it would probably be a trick.
Speaking of "Dog Hand", why didn't Trigon revoke the Titans' powers that he gave them? Shouldn't he have known they would use them to defeat him?
Perhaps he simply cannot. There is a trope Faustian Rebellion. That asks that exact question and it's common enough that once powers are given they cannot be taken back either at all or without complicated rituals.
Because Trigon's solution probably would more than likely involve letting the rest of the team die first before stopping the tooth demon so that there would be nothing left to stop Raven from conquering this world (and then going out for ice cream to celebrate!)
It was only that one time. It probably won't happen again.
In the episode with the doubles, how did Cyborg's robot parts get fat? Are his robotics some sort of comedic nanobot-material in this continuity?
In "Legs" the Titan all put on Raven's cloak with... interesting side effects. My problem is that in "Meatball Party" and "Laundry Day", Beast Boy and Starfire, respectively, wear Raven's cloak without any adverse side effects (actually, no effects at all). What. The. Heck.
I think it's because the spell Raven used to make Robin do the laundry stopped the demons or something...
Well, the entire show runs on Negative Continuity. Aside from what you've mentioned, this episode also showed Raven walking, something she had a terrible time trying to do when Robin forced the rest of the Titans to go without using their superpowers in a previous ep. Going by that episode, she really shouldn't have been able to walk so freely in this one, let alone dance and put on a new superhero persona who's entirely based around kicking.
Gizmo tells Jinx that she's not allowed to see Cyborg anymore...............wait a minute why is Gizmo telling Jinx what to do?
My best guess is that, being the smartest of the group, he's the leader.
Don't the Titans minus Cyborg and Robin have better disguises? At the very least, BB could use his "Beast within", Raven has illusion magic or just her standard Elderitch Abomination form she uses all the time in this series, Starfire could just dye her hair, put on the armor, and say she's Blackfire.