Einllela,
The academic average score of 19 is good. The 15 in the PAT section is not the greatest, so if these were my scores, I would definitely retake the test. The only reason I say this is because if you want to get into a very competitive, high-caliber private or state dental school, you will need a higher PAT score. Also, it wouldn't hurt to bring up your academic average a point or two. But that is just what I think.... 🙂
Just take a ton of practice PAT tests and you should be able to (hopefully) bring up that score by 3-5 points easily. As for the academic average section, same thing--LOTS of practice tests.
Anyway, I hope this helped.
Racerdude
