I'm too lazy to read all these posts, so sorry if I'm repeating anything...
I did however read the post dirrectly above mine... Saying that not admitting to a misdemeanor under the category of a felony is a stretch? No it's not... because it's not a felony, hence the different names😉
Onto the important stuff... If you just got the ticket/arrested for it, you seriously won't have anything on your record for at least another 3 months. You already sent out your apps and at the time, when you filled out that you were never guily of a misdemeanor or whatever, you did not falsify info. Thus, if you get accepted they cannot legally revoke your acceptance if they somehow did find out about it. If they try to, take them to court and you will win. They don't have a case. On the other hand, if they were to find out prior to acceptance, they can do pretty much whatever they choose with the info. I have heard of d-schools checking criminal history and kicking people out at orrientation... although that was for lying on the actual application, which you did not.
If you plead not guilty to the dwi you can drag it out longer and pretty much ensure it's not on your record for a while. However, a better choice would be to try and exaplain to the judge that you are going to professional school, you realize you were stupid and you're hoping that this one instance won't ruin the rest of your life. If you're sincere about it and the judge isn't in a bad mood, you should be able to work out some type of probation deal where you can have the record sealed/expunged upon successfully completing the probation requirements... this would probably involve random breathalyzers for the next 6-12months (guessing). If you can convince the judge to allow you to go this route, it will not be on ANY records until after your probationary period (by the end of which you will certainly be settled in d-school). Afterward, upon successful completion (assuming you could get such a deal) the record may either be sealed to the public or expunged. Either way, it wouldn't be on any record the dental school could get. Furthermore, most apps will have a little sidenote when you fill out that section saying that you don't have to confess to any sealed/expunged offenses. So assuming that you could get such a probation, you wouldn't be doing anything wrong AT ALL (in my opinion).
I'm no lawyer and certainly not familiar with any state laws you may have to deal with, so I cannot guarantee the validity of anything I stated. I would definately suggest that you get a lawyer, whether a state appointed or an actual one.
Also, not sure if you have any prior criminal history (sealed or not)... if you do, that could make getting any probation deal SIGNIFICANTLY more difficult.
Hope this helps you out man.