Here are the final audited numbers from the 2009 ADA Annual Session in Honolulu, provided by the ADA.
U.S. Dentists -- 7,386
International Dentists -- 721
Total Dentists -- 8,107
% of Total Registrants -- 33.01%
Students -- 266
Dental Assistant Students -- 130
Dental Business Assistants -- 1,936
Dental Assistants -- 2,616
Dental Hygienists -- 1,967
Lab Techs -- 74
Dental Dealers -- 79
International Guests -- 276
Other -- 5,795
Exhibitors -- 3,316
Total Registration -- 24,562