He was the pioneer of Periodontitis, in who’s honor Periodontitis was earlier known as Rigg’s Disease. He Graduated from Batlimore college of Dental Surgery. Rigg’s always quoted ” teeth with their accretions and roughened surfaces are the existing cause of the disease” Rigg’s was the first to have got the idea of “Reattachment” He was the first to treat the root of a cuspid with lactic acid and fix gum graft with “fine cambric needles” which was a success.