I'm a pre-dental student as well so take my opinion with a grain of salt.
I believe your TS is slightly below the average for matriculants, you have a good GPA and Pat, but they're not exceptional enough to completely make your other DAT scores irrelevant. You have a ton of hours, so that could definitely help.
And of course, there's no such thing as being guaranteed an acceptance. So if I were you I wouldn't be worried, but I definitely wouldn't be overly confident either. Good luck!
Average DAT score for dental school is around 20, so no, you are not automatically in. Your DAT scores are below average. But with your strong ECs and good GPA, you will certainly have interviews.