NYT Connections Blue Group Hint

There’s your visual hint for today’s blue group. It might be your eureka! moment. (No, sorry, that was not a clue.) Or it might not have helped at all. Hey, we try.
Time for the verbal clue: Other words here could be PAIN, FEAR, and ANXIETY…if you’re a chicken like we are. But filling this one wasn’t exactly like pulling teeth.
No? That verbal cue should have gotten you all the way there. Now, rinse and spit, please…
Today’s blue group answer is Involved in a Dentist Visit and its words are DRILL, SINK, TOOTHBRUSH, and X-RAY.