Pup has been eating fine, and continues to eat fine, including relatively hard stuff (no bones or bully sticks but softer dental chews). He does have an accumulation of plaque on said tooth which indicates he favors the other side, and despite the hard pitch, I doubt the vet is lying about a fracture.
The literature online is very equivocal about whether tooth removal is needed and says some fractured teeth are fine and don't cause pain.
Any advice / information sources you trust on how to triage this situation?