Temple is an above average school in a horrible area. I interviewed there last year. It's not so bad during the day, but the place literally clears out when the sun goes down because it's not safe to be there--faculty, students and our tour guide all told us the same thing. Temple's main selling point is that you'll work on a clinical population unlike most other d-schools in the country. You'll probably extract over 100 teeth during your rotations, have a ton of full-mouth cases, etc etc. It's a good place clinically, but I don't know a single person who interviewed there and felt ok about the safety of the area.
Also, as far as the 90% placement rate goes, they're including people accepted into one year post-grad residencies for general dentistry in that stat, which is basically something anyone can do if they choose to. In fact, to practice in New York State you HAVE to go through a one year post-grad residency. Don't confuse this stat with the actual number of people that get into specialty residency programs--they're two different numbers.