Medical travel expenses

We moved from Missouri to Arizona two years ago.  Our kids still live in Missouri. In 2017 my wife used our family dentist for checkups as we had not yet found one in Arizona.  Our "home base" in Missouri is now 120 miles from her dentist.  She had two dental visits in 2017.  Are we allowed to claim mileage for those visits on our 2017 itemized medical deductions?  I am aware of the percentage of medical to AGA limitations.  I just want to know if these miles are tax-deductible.