I saw the new Star Trek movie over the weekend. There is an actual dental high tech application here.
Everybody wants to just talk to the computer; like Star Trek. That means everybody not just dentists. The very best minds in technology are busy developing reliable voice input, and they have been at it for decades. Despite all this effort voice input is still very limited, which demonstrates what a difficult problem it is.
There are several voice input options for dentistry. The most successful have been for perio where the commands are simple and few. Voice dictation is also available. However, true voice command of the computer or complete voice charting is not really viable yet.
To be completely honest most people already talk to their computer. The real trick is to get the computer to listen.