Dr. Dennis Henry DDS is a Harahan Dentist offering Teeth Whitening, General Dentist, Dental Office, Family Dentistry, Teeth Cleaning, Root Canals, Dental Bridges, Crowns and Dentures.. Dr. Dennis Henry DDS is a dentist in Harahan that offers superior dentistry. From teeth whitening to root canals,we can help you whatever your situation is. We've been locally owned and operated in Harahan since 1981.