The whole point is that expectations do change but so slowly that there is 0 incentive for a dentist to switch their practice over from what they know and what works well to your shiny new software which works with mobiles, tablets and so on.
You do have a market: new dentists. But old ones are just happily going to roll along with their gear until either they or the gear dies of old age. And then they or their heirs will sell the practice to a new dentist, who will have to wonder about re-keying all the old data into your shiny new software or to focus on what he's best at: dentistry.
You do have a market: new dentists. But old ones are just happily going to roll along with their gear until either they or the gear dies of old age. And then they or their heirs will sell the practice to a new dentist, who will have to wonder about re-keying all the old data into your shiny new software or to focus on what he's best at: dentistry.