perio endoscopy

[Tdub]

I need to find a dentist. I would like to find out what dentists in my area (Chicago) do endoscopy when doing profys and evaluations. I want this because past dentists (not perios) have not been able to get to the bottom of my gingivitis problem (and I have some 4 pockets in the back), despite good homecare (daily: 1X floss, 3X water floss, 2X ultrasonic brush; occasional stimudent) and frequent profys/visits. Is this a good line of reasoning for me to follow? If so, what percentage of perios do endoscopy? What is the proper name (if other) for referencing this procedure? TIA, Tdub.