Heh - funny that your bring this up on the day that The Refugee paid a visit to his dentist.
Although the technology itself may not have advanced as much based on "cool" factor, but the results are rather dramatic. Fluoridation (whether you like it or not - where's that in the Constitution?), tooth sealing, fluoride treatments and other preventative measures have made a lifetime of natural teeth rather common. Teeth are, perhaps, inherently lower-tech than organs.
For the record, The Refugee must have a cavity in his mouth filled for the first time in 49 years - no, not the big one in the middle.
Clearly your cavity is the product of eight years of failed policies of the Bush Administration.
I'll take your point on advances, but they seem pretty skinny compared to other medicine. And if I restrain it to the hygienist -- the last advance was replacing the bronze pointy thing with steel.