I was in your shoes last year. My interests were implant surgery and restoration, surgeries, advanced prosth cases, and sedation. I started off my research by ordering the ASDA guide to postdoctoral AEGD and GPR progams. This book gives a summary of every program in the US. From this, I identified the programs that best matched what I was looking for and began searching the web and thoroughly researched on their websites. I would recommend doing the same.
What you are probably more interested in however is what I found out. Well the top programs that I could find that met my geographical requirements (Southeast) were: Palmetto Health GPR in Columbia, SC; San Antonio VA AEGD; Univ. of Florida-Jacksonville AEGD, Univ. of Florida-St Petersburg AEGD; UAB-GDR in Alabama; Carolinas Medical Center in Charlotte. I applied to and interviewed at the first 4 that I listed.
San Antonio, Jacksonville, Columbia, and ST. Petersburg, I believe are some of the top AEGD/GPR programs in the country, if not the top. All of the programs give you a thorough education in comprehensive dentistry and allow you to place and restore implants, and give much more advanced surgical training. Anyone who has done their research will agree that these programs are some of the best and theirfore are some of the most competitive to get into. And unlike popular belief all AEGD/GPR's are not all easy to get into. As far as numbers of Implant surgeries go, Jacksonville in my oppinion places the most implants of any AEGD/GPR residency in the country (guarantee 20 and one resident placed 44 a year ago) followed by San Antonio, Columbia, and St. petersburg. Each of these programs is a little different and offers slightly different experiences. My recommendation is to do your research and when you interview really talk to the residents. Also know specifically what you want out of program. AEGD/GPR's can be an awesome experience or they can be a complete waste of your time if you go to a bad one.
I am currently doing my residency in Jacksonville, FL and I am really enjoying myself. I have learned more in the past month than in the last year of dental school. I placed 2 implants yesterday, and will be placing 2 more next week. I have also treatment planned many advanced cases and should begin them soon. I have extracted a few sets of impacted wisdom teeth and completed some other more advanced oral surgical procedures. I am also getting a lot of experience with esthetic cases, which I got none of in Dental School. Only possible downside here is that their is no sedation training, although I am starting to realize it isn't a big deal.
I hope this helps,