Dear Hope,
Of the dental schools that I've interviewed, North Carolina and U of Pennsylvania both have excellent reputations in getting people into specialty programs. Last year U of Penn placed 11 students into Oral Surgery and 7 into Orthodontics, which is amazing! North Carolina also has a very good reputation of getting people into specialities that students want. Although research is not required at UNC, a lot of students do it. I believe they said the percentage was around 97% of their PREFERRED speciality. So be careful when you ask for the percent because some students don't get into their first choice, and so apply to 2nd or third. Ask the schools what % actually get into their preferred choice of specialty.