Dentists treating patients with chronic periodontitis, a severe form of gum disease that can lead to tooth loss, are advised to use scaling and root planing (SRP), deep cleaning of the teeth, as initial treatment, according to new guidelines from the American Dental Association (ADA). The guidelines, based on a systematic review and meta-analysis of treatment of periodontitis, were published in the July issue of the Journal of the American Dental Association (JADA).