This is supposed to help people realize that Washington was not the dour man they usually visualize, somehow. The logic escapes me. This will allow them to model his face more accurately, but it’s not clear to me how that helps folks with appreciating his psyche.
According to Richard Shenkman, by the time Washington died, he only had one real tooth left in his mouth, and all his dentures were anchored to that one solid spot. Ouch! I wouldn’t blame George for being grumpy. Eighteenth Century Dentistry did the best it could with what it had at hand, but I wouldn’t want to be forced to use it.