at a smaller/less prestigious school (Morehead), the classes will be easier thus allowing you to earn a high GPA. at a bigger/more prestigious school (UK), the classes will be tougher thus causing you to work harder for that high GPA.
IMO, dental schools do not really factor in where you attend undergraduate. it seems as if you take the necessary courses and earn that 3.9 GPA from a so-so school, it will outweigh a 3.5 from a prestigious school. i could be wrong, but it has been my experience that the dental schools dont care whether you attend duke/yale,etc as long as you can get a high GPA.
i think that this system is unfair and those that attend a well-known university should get more credit than those attending a "MidEastern-Northern Mississippi State Tech University" (not a real school, just an example lol)
think about what you would want. tuition, location, major are all big factors. UK will give you more opportunities, hell they are a powerhouse in sports too which is always fun to be a part of. in the end, just do really well in whichever school you choose.